Real Time Touch



new TOP 200 Companies filing patents this week

new Companies with the Most Patent Filings (2010+)




Real Time Touch

Synaptics Incorporated patents


Recent patent applications related to Synaptics Incorporated. Synaptics Incorporated is listed as an Agent/Assignee. Note: Synaptics Incorporated may have other listings under different names/spellings. We're not affiliated with Synaptics Incorporated, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "S" | Synaptics Incorporated-related inventors


Non-linear feedback control for temperature and power protection of loudspeakers

A system and a method provide for protecting a loudspeaker from thermal and/or mechanical failure by monitoring for over-temperature and over-power conditions. The system generates a first gain from a first speaker protection controller in response to a driving voltage and/or a driving current of a loudspeaker, and generates a second gain from a second speaker protection controller in response to the driving voltage and/or a driving current of the loudspeaker, if the temperature exceeds a thermal limit or if the power exceeds a maximum power. ... Synaptics Incorporated

Device and method for digital signal transmission

A system and method for digital signal reception comprise outputting first and second digital transmission signals complementary to each other. Further, a first and second output signals are outputted. ... Synaptics Incorporated

Input/output mode control for audio processing

Systems and methods provide input and output mode control for audio processing on a user device. Audio processing may be configured by monitoring audio activity on a device having at least one microphone and a digital audio processing unit, collecting information from the monitoring of the activity, including an identification of at least one application utilizing audio processing, and determining a context for the audio processing, the context including at least one of a hardware, software, audio signal and/or environmental context. ... Synaptics Incorporated

Current-driven display panel and panel display device adapted to touch sensing

A display panel includes a plurality of pixel circuits; and a sense line. The plurality of pixel circuits includes a touch sensing-adapted pixel circuit including a current-driven element, a drive transistor; a hold capacitor configured to hold a voltage corresponding to a data voltage and a sense capacitor. ... Synaptics Incorporated

Two channel headset-based own voice enhancement

Systems and methods for enhancing a headset user's own voice include an outside microphone, an inside microphone, audio input components operable to receive a plurality of time-domain microphone signals, including an outside microphone signal from the outside microphone and an inside microphone signal from the inside microphone, a subband decomposition module operable to transform the time-domain microphone signals to frequency domain subband signals, a voice activity detector operable to detect speech presence and absence in the subband signals, a speech extraction module operable to predict a clean speech signal in each of the inside microphone signal and the outside microphone signal, and cancel audio sources other than a headset user's own voice by combining the predicted clean speech signal from the inside microphone signal and the predicted clean speech signal from the outside microphone signal, and a postfiltering module operable to reduce residual noise.. . ... Synaptics Incorporated

Method and system for force sensitive components in a display device

A processing system includes a sensor module and a determination module. The sensor module is configured to perform a capacitive scan using electrodes disposed in a display device in a first area. ... Synaptics Incorporated

Coefficient generation for digital filters

An example circuit includes: a filter configured to process a digital signal through at least one stage; and a coefficient generator circuit configured to generate coefficients for the at least one stage of the filter. The coefficient generator circuit includes: a lookup-table (lut) configured to output a differential sequence; an up-sampling holder circuit configured to up-sample and hold the differential sequence to generate an up-sampled differential sequence; and an accumulator configured to integrate the up-sampled differential sequence to generate the coefficients.. ... Synaptics Incorporated

Connectionist temporal classification using segmented labeled sequence data

Classification training systems and methods include a neural network for classification of input data, a training dataset providing segmented labeled training data, and a classification training module operable to train the neural network using the training data. A forward pass processing module is operable to generate neural network outputs for the training data using weights and bias for the neural network, and a backward pass processing module is operable to update the weights and biases in a backward pass, including obtaining region of target (rot) information from the training data, generate a forward-backward masking based on the rot information, the forward-backward masking placing at least one restriction on a neural network output path, compute modified forward and backward variables based on the neural network outputs and the forward-backward masking, and update the weights and biases.. ... Synaptics Incorporated

Systems and methods for image optimization and enhancement in electrophotographic copying

Systems and methods for enhancing an image for printing include identifying a plurality of true edge positions in a scanned digital image, generating an edge restoration signal based on image data at the plurality of true edge positions, generating a boost value for each pixel position in the image as a function of the edge restoration signal and an unsharp masking of the image, and generating an enhanced image. A system may include a print interface, an image interface receiving a digital image without an explicit k component, and an image processing module that computes a halftone energy measure, an edge strength, and a colorfulness measure, generate a k component based on the halftone energy measure, the edge strength, and the colorfulness measure, and output data representing the image and a k component to the print engine.. ... Synaptics Incorporated

Compressed data transmission in panel display system

A host device divides original data into first to nth stream data for n being an integer of two or more, generates first to nth compressed stream data by sequentially compressing the first to nth stream data with a variable length compression, divides the first to nth compressed stream data into fixed-length blocks, and sequentially transmits the fixed-length blocks to the display driver. The display driver includes a memory storing therein the fixed-length blocks and a decompression circuitry reading out the fixed-length blocks from the memory. ... Synaptics Incorporated

Device and method for image data processing

A display driver for driving a display panel includes a voltage data generator circuit calculating a voltage data value from an input grayscale value and a driver circuitry driving the display panel in response to the voltage data value. The voltage data generator circuit includes a basic control point data storage circuit storing therein basic control point data specifying a basic correspondence relationship between the input grayscale value and the voltage data value, a correction data memory storing correction data for each of the pixel circuits, a control point calculation circuit and a data correction circuit. ... Synaptics Incorporated

Under display optical fingerprint sensor arrangement for mitigating moirÉ effects

A system and method for an electronic device for imaging a biometric object having structural features of interest is disclosed. The electronic device includes a display including rows of pixel elements, the rows of pixel elements being parallel a first primary direction along a first axis and an optical sensor mounted underneath the display, the optical sensor being parallel to a second primary direction along a second axis. ... Synaptics Incorporated

Active avoidance of display noise in simultaneous touch and display

Embodiments described herein include a method for avoiding display noise in a capacitive touch sensing device that includes sensing a touch input in a sensing region of an input device at a first touch sensing frequency. The method also includes analyzing incoming display data for display data noise at the first touch sensing frequency and at a second touch sensing frequency. ... Synaptics Incorporated

Binary and multi-class classification systems and methods using connectionist temporal classification

A classification training system for binary and multi-class classification comprises a neural network operable to perform classification of input data, a training dataset including pre-segmented, labeled training samples, and a classification training module operable to train the neural network using the training dataset. The classification training module includes a forward pass processing module, and a backward pass processing module. ... Synaptics Incorporated

08/16/18 / #20180232632

Efficient connectionist temporal classification for binary classification

A classification system and method for training a neural network includes receiving a stream of segmented, labeled training data having a sequence of frames, computing a stream of input features data for the sequence of frames, and generating neural network outputs for the sequence of frames in a forward pass through the training data and in accordance weights and biases. The weights and biases are updated in a backward pass through the training data, including determining region of target (rot) information from the segmented, labeled training data, computing modified forward and backward variables based on the neural network outputs and the rot information, deriving a signal error for each frame within the sequence of frames based on the modified forward and backward variables, and updating the weights and biases based on the derived signal error. ... Synaptics Incorporated

08/16/18 / #20180232101

Providing ground truth for touch sensing with in-display fingerprint sensor

An input device includes a plurality of sensor electrodes and a processing system. The plurality of sensor electrodes is configured for capacitive sensing in a sensing region of the input device. ... Synaptics Incorporated

08/09/18 / #20180225501

Display integrated optical fingerprint sensor with angle limiting reflector

An optical sensor for imaging an input object, such as a fingerprint, on a sensing region of a display is disclosed. The sensor includes a transparent substrate having a first side and a second side opposite the first side. ... Synaptics Incorporated

08/02/18 / #20180218667

Device and method for driving display panel in response to image data

A display driver includes: a receiver configured to receive image data of each line of a display panel from an external device; a line latch circuit having a line latch configured to latch the image data of each line received by the receiver in response to a strobe signal; a driving circuit section which drives the display panel in response to the image data latched by the line latch; and a timing controller configured to generate the strobe signal. The receiver is configured to detect occurrence of transmission error in data transmission about each line. ... Synaptics Incorporated

08/02/18 / #20180218195

Biometric imaging with hover detection

A method and system for fingerprint imaging in an electronic device having a display, a touch sensor with a touch interface and an optical fingerprint sensor with a sensing region is described. The method and system include placing the electronic device in a hover detect mode, the hover detect mode scanning for a hovering finger; detecting the hovering finger; initiating illumination in the sensing region to image a fingerprint of the finger; capturing an image of the fingerprint in the sensing region; and disabling the illumination in the sensing region.. ... Synaptics Incorporated

08/02/18 / #20180218191

Outside of active area finger-print sensor

Embodiments herein describe an input device that includes a display area for outputting images which includes a capacitive sensing region. For example, the display area may include transparent sensor electrodes that can identify a location of an input object (e.g., a finger or stylus) within the sensing region. ... Synaptics Incorporated

07/26/18 / #20180211078

Hybrid optical and capacitive sensor

A hybrid capacitive and optical fingerprint sensor system includes: capacitive sensor electrodes; an optical image sensor having a plurality of image sensor pixels; light conditioning elements, configured to condition light from a sensing region of the hybrid capacitive and optical fingerprint sensor for detection by the optical image sensor; and a processing system having one or more controllers, configured to operate the capacitive sensor electrodes in a low-power mode of operation for the hybrid capacitive and optical fingerprint sensor, and to operate the optical image sensor to acquire an image from the sensing region of the hybrid capacitive and optical fingerprint sensor.. . ... Synaptics Incorporated

07/26/18 / #20180210480

System and method for voltage generation

A voltage generator circuitry includes first to third bipolar transistors having commonly-connected base electrodes, first and second current mirror circuitries, first and second differential amplifiers; a first resistor; and a current-voltage conversion circuitry. The first current mirror circuitry supplies currents to the first to third bipolar transistors and to the current-voltage conversion circuitry. ... Synaptics Incorporated

07/19/18 / #20180205908

Motion adaptive de-interlacing and advanced film mode detection

A system including a motion adaptive de-interlacer, a film mode detector, and a combiner. The motion adaptive de-interlacer is configured to determine a first output by de-interlacing a plurality of interlaced frames based on at least a first motion indicator indicating motion between fields of the plurality of interlaced frames. ... Synaptics Incorporated

07/19/18 / #20180204522

Display driver with gamma correction

A system and method for controlling the screen brightness of a display comprising calculating a brightness data which specifies a screen brightness level of a self-luminous display panel, determining, based on the brightness data, correction control points, calculating an output value from the input grayscale value with input-output characteristics specified by the correction control points.. . ... Synaptics Incorporated

07/19/18 / #20180204037

Pixel architecture and driving scheme for biometric sensing

Embodiments herein describe an input device that includes a rectangular array of sensor electrodes connected to sensor modules that measure capacitive sensing signals corresponding to the electrodes. When performing code division multiplexing (cdm), multiple sensor electrodes are coupled to the same sensor module. ... Synaptics Incorporated

07/19/18 / #20180204036

Pixel architecture and driving scheme for biometric sensing

Embodiments herein describe an input device that includes a rectangular array of sensor electrodes connected to sensor modules that measure capacitive sensing signals corresponding to the electrodes. During a charge stage, the input device applies a charging voltage to neighboring sensor electrodes in the array. ... Synaptics Incorporated

07/19/18 / #20180203542

Zero-dimensional baseline management

A processing system includes sensor circuitry configured to obtain capacitive sensing signals from sensor electrodes, the sensor electrodes having baseline values, such that each sensor electrode has a corresponding baseline value. The processing circuitry is configured to be connected to the sensor circuitry and configured to determine, for the corresponding baseline value of a sensor electrode, a spatial consistency metric value using the various baseline values, set a baseline updating scheme for the sensor electrode based on the spatial consistency metric value, and update the corresponding baseline value of the sensor electrode according to the baseline updating scheme to obtain an updated corresponding baseline value.. ... Synaptics Incorporated

07/12/18 / #20180197454

System and method for subpixel rendering and display driver

A system and method for rendering subpixels comprising performing an eight-color halftoning process on the second image data to generate third image data which describe a grayscale value of each of an r subpixel, a g subpixel and a b subpixel of each pixel with one bit, generating the third image data by performing a dithering process on the second image data using a dither value selected from elements of the dither table, when the third image data associated with a pixel of interest of the display panel is generated, and driving the display panel in response to the third image data.. . ... Synaptics Incorporated

07/12/18 / #20180197450

Apparatus and method for adjusting display characters of display device

A display panel driver includes an image data generator, a brightness correction circuit performing a correction calculation on image data, a drive section driving the display panel in response to corrected image data; and a display timing generator outputting a timing control signal. The correction calculation by the brightness correction circuit is adjustable. ... Synaptics Incorporated

07/12/18 / #20180196542

Reduced capacitive baseline shift via mixing period adjustments

A method and related processing system and input device are disclosed, the method comprising driving a first capacitive sensing signal with first sensing frequency onto a first group of a plurality of sensor electrodes, and acquiring first capacitive measurements of resulting signals received by a second group of the plurality of sensor electrodes. Acquiring first capacitive measurements comprises applying a first demodulation signal with a predefined first mixing period defined within a sensing period associated with the first sensing frequency. ... Synaptics Incorporated

07/05/18 / #20180191996

Branch device bandwidth management for video streams

Bandwidth management includes receiving, by a branch device, a requested display identification data structure from a display device. The branch device modifies the requested display identification data structure based on a total bandwidth through a constricted port on the branch device to obtain a modified display identification data structure. ... Synaptics Incorporated

07/05/18 / #20180190256

Hum reduction circuit and method

Systems and methods according to one or more embodiments are provided for a hum reduction circuit implemented to provide a ground path between an audio generating device and a powered headset. In one example, a system includes a jack configured to accept a plug comprising a first electrical ground connection. ... Synaptics Incorporated

07/05/18 / #20180188845

Reduced capacitive baseline shift via switching elements

A method and related processing system and input device are disclosed, the method comprising driving a first capacitive sensing signal having a predefined first sensing frequency onto a first group of a plurality of sensor electrodes, and acquiring first capacitive measurements of resulting signals received by a second group of the plurality of sensor electrodes. Acquiring first capacitive measurements comprises applying a first demodulation signal having a predefined mixing period defined within a sensing period associated with the first sensing frequency. ... Synaptics Incorporated

07/05/18 / #20180188810

Haptic feedback wire mount

An input device may include a wire element and a moveable substrate coupled to the wire element. The moveable substrate may include various wire alignment features. ... Synaptics Incorporated

06/28/18 / #20180183320

Error amplifying and frequency compensating circuits and methods

Methods and systems for implementing a closed loop dc-dc converter utilize a compensator to stabilize the output voltage of the dc-dc converter while improving the loop gain in the band of interest. A compensator may be implemented by an operational amplifier and a feedback circuit. ... Synaptics Incorporated

06/28/18 / #20180182411

Multiple input multiple output (mimo) audio signal processing for speech de-reverberation

Audio signal processing for adaptive de-reverberation uses a least mean squares (lms) filter that has improved convergence over conventional lms filters, making embodiments practical for reducing the effects of reverberation for use in many portable and embedded devices, such as smartphones, tablets, laptops, and hearing aids, for applications such as speech recognition and audio communication in general. The lms filter employs a frequency-dependent adaptive step size to speed up the convergence of the predictive filter process, requiring fewer computational steps compared to a conventional lms filter applied to the same inputs. ... Synaptics Incorporated

06/28/18 / #20180182410

Online dereverberation algorithm based on weighted prediction error for noisy time-varying environments

Systems and methods for processing multichannel audio signals include receiving a multichannel time-domain audio input, transforming the input signal to plurality of multi-channel frequency domain, k-spaced under-sampled subband signals, buffering and delaying each channel, saving a subset of spectral frames for prediction filter estimation at each of the spectral frames, estimating a variance of the frequency domain signal at each of the spectral frames, adaptively estimating the prediction filter in an online manner using a recursive least squares (rls) algorithm, linearly filtering each channel using the estimated prediction filter, nonlinearly filtering the linearly filtered output signal to reduce residual reverberation and the estimated variances, producing a nonlinearly filtered output signal, and synthesizing the nonlinearly filtered output signal to reconstruct a dereverberated time-domain multi-channel audio signal.. . ... Synaptics Incorporated

06/28/18 / #20180182371

Methods and systems for end-user tuning of an active noise cancelling audio device

An active noise cancellation system includes a sensor operable to sense environmental noise and generate a corresponding reference signal, a fixed noise cancellation filter including a predetermined model of the active noise cancellation system operable to generate an anti-noise signal, and a tunable noise cancellation filter operable to modify the anti-noise signal in accordance with stored coefficients, wherein the tunable noise cancellation filter is further operable to modify the stored coefficients in real-time based on user feedback and generate a tuned anti-noise signal that models tunable deviations from the predetermined noise model. A graphical user interface is operable to receive user adjustments of tunable parameters in real-time, the tunable parameters corresponding to at least one of the stored coefficients.. ... Synaptics Incorporated

06/28/18 / #20180181251

Capacitive sensing active electromagnetic emission cancellation

A method of operating a plurality of electrodes, and a related processing system and input device are disclosed. The method comprises driving, within a first time period, a plurality of sensor electrodes with a first signal. ... Synaptics Incorporated

06/21/18 / #20180173937

Multi-resolution fingerprint sensor

Multi-resolution fingerprint sensors and methods of using the same are provided. The multi-resolution fingerprint sensors each include a portion of the imaging area or region of the sensor that provides higher imaging resolution than the remaining imaging area of the sensor. ... Synaptics Incorporated

06/21/18 / #20180173465

System and method for communication in a semiconductor device

A semiconductor device including a first data terminal, a data output terminal, a control circuitry, first and second communication interfaces, and a bridge circuitry. The bridge circuitry is configured to operate a normal mode and a bridge mode. ... Synaptics Incorporated

06/14/18 / #20180166040

Semiconductor device for mitigating through current and electronic apparatus thereof

A semiconductor device has a first mode in which the semiconductor device is used alone and a second mode in which the semiconductor device is used in combination with another semiconductor device. In case that one driven device is driven using the semiconductor device in the first mode and the second mode, power supply lines are caused to allow electrical conduction to each other outside of each semiconductor device in order to cancel errors of operation power supply voltages of each semiconductor device. ... Synaptics Incorporated

06/07/18 / #20180158214

Display device, display panel driver, image processing apparatus and image processing method

A display panel driver includes: a correction calculation section which performs correction calculations on input image data to generate saturation-enhanced output image data and a drive circuitry driving the display panel in response to the output image data and a starting point control section. The correction calculation section generates red (r) data, green (g) data and blue (b) data of the output image data by performing the correction calculations on r data, g data and b data of the input image data, respectively. ... Synaptics Incorporated

06/07/18 / #20180157889

Optical sensor with substrate light filter

An optical biometric sensor is disclosed. The optical biometric sensor includes a filter layer having a top surface and a bottom surface. ... Synaptics Incorporated

05/24/18 / #20180145697

Audio digital-to-analog converter with enhanced dynamic range

An audio digital-to-analog converter (dac) achieves high dynamic range with low power consumption using a segmented dac, also referred to as a noise shaped splitter. The noise shaped splitter is dynamically reconfigured based on envelope detection that tracks the amplitude of an n-bit digital input signal to the segmented dac. ... Synaptics Incorporated

05/24/18 / #20180143736

Reducing background capacitance associated with a touch surface

A processing system for reducing background capacitance associated with a touch surface. The processing system includes: transmitter circuitry that drives a transmitter electrode of the touch surface with a waveform; receiver circuitry that detects input in a sensing region of the touch surface based on a resulting signal from a receiver electrode of the touch surface; and offset reduction circuitry connected to the receiver circuitry that: subtracts, prior to completion of an integration period of the waveform, a first plurality of charge associated with background capacitance from the resulting signal using a capacitor; executes a first reload of the capacitor prior to completion of the integration period of the waveform; and subtracts, prior to completion of the integration period of the waveform, a second plurality of charge associated with background capacitance from the resulting signal using the capacitor after the first reload.. ... Synaptics Incorporated

05/17/18 / #20180137798

Device and method for color reduction with dithering

Techniques for displaying a quality-improved image with reduced power consumption are provided. In one embodiment, a display panel driver is provided that includes a dithering section configured to receive first m-bit image data and configured to generate second image data by performing dithering on the first image data with n-bit dither values each selected from elements of a dither table, and a driver circuit configured to drive the source lines of a display panel in response to the second image data. ... Synaptics Incorporated

05/10/18 / #20180131359

High-speed current comparator suitable for nano-power circuit design

Systems and methods according to one or more embodiments are provided for a current comparator with biasing circuitry to provide for low power consumption and high-speed performance. In one example, a system includes an input port to receive a current pulse and an amplifier configured to provide a voltage pulse at an output port in response to the current pulse. ... Synaptics Incorporated

05/10/18 / #20180129860

Systems and methods for spoof detection based on local interest point locations

Disclosed are a system and method for performing spoof detection. The method includes: receiving, by processor from a biometric sensor, an input image of a biometric; obtaining, by the processor, keypoint locations of keypoints in the input image, wherein keypoints in the input image comprise local regions of interest in the input image; computing, by the processor, one or more anti-spoof metrics of the input image based on the keypoint locations; and, determining, by the processor, whether the input image is a replica of the biometric based on the one or more anti-spoof metrics.. ... Synaptics Incorporated

05/10/18 / #20180129859

Systems and methods for improving spoof detection based on matcher alignment information

Disclosed is a system and method for performing spoof detection. The method includes: receiving, by a processor from a biometric sensor, an input image of a biometric; obtaining, by the processor, alignment information that aligns the input image to an enrollment image; determining, by the processor, an overlap region and a non-overlap region of the input image relative to the enrollment image; extracting, by the processor, one or more anti-spoof features from the input image based on one or more of the overlap region and the non-overlap region; and, determining, by the processor, whether the input image is a replica of the biometric based on the one or more anti-spoof features.. ... Synaptics Incorporated

05/10/18 / #20180129858

Systems and methods for spoof detection relative to a template instead of on an absolute scale

Disclosed are a system and method for performing spoof detection. The method includes: receiving, by a processor from a biometric sensor, an input image of a biometric; extracting, by the processor, one or more anti-spoof metrics from the input image; receiving, by the processor, an anti-spoof template corresponding to the biometric; for a first anti-spoof metric, computing, by the processor, a differential value between a value of the first anti-spoof metric extracted from the input image and a value of the first anti-spoof metric in the anti-spoof template; and determining, by the processor, whether the input image is a replica of the biometric based on the differential value.. ... Synaptics Incorporated

05/10/18 / #20180129857

Systems and methods for spoof detection based on gradient distribution

A system and method for performing spoof detection are disclosed. The method includes: receiving an input image of a biometric; generating a first filtered image by applying a first convolution to the input image based on a first convolution kernel; generating a second filtered image by applying a second convolution to the input image based on a second convolution kernel; computing a gradient residual image by subtracting, for each pixel location of the first and second filtered images, a pixel value in the second filtered image from a corresponding pixel value in the first filtered image; applying a density estimation procedure to the gradient residual image to identify areas of varied density; and, determining whether the input image is a replica of the biometric based on results of the density estimation procedure.. ... Synaptics Incorporated

05/10/18 / #20180129346

Active pen panel receiver interference cancellation

A processing system for reducing interference. The processing system includes: a sensor module configured to: receive a noisy active pen signal associated with an active pen from a panel receiver; and receive a plurality of interference signals from a plurality of interference receivers; and a determination module configured to: determine an estimated interference signal based on a subset of the plurality of interference signals; and generate a filtered active pen signal by reducing interference in the noisy active pen signal based on the estimated interference signal.. ... Synaptics Incorporated

05/10/18 / #20180129344

Matched filter for a first order sigma delta capacitance measurement system and a method to determine the same

A processing system that includes a sigma-delta converter and a filter unit that applies a matched filter to the output of the sigma-delta converter. The processing system drives sensor electrodes for capacitive sensing and receives resulting signals with the sensor electrodes in response. ... Synaptics Incorporated

04/19/18 / #20180107335

Touch controller with signal combining and simultaneous i/q demodulation

An input device is configured to detect signals from of an input object. Examples include acquiring a first signal on a first sensor electrode of the input device; acquiring a second signal on a second sensor electrode of the input device; combining the first signal and the second signal to produce a combined signal; demodulating the combined signal to determine an in-phase component of the combined signal and a quadrature component of the combined signal; and combining the in-phase component and the quadrature component to determine signal magnitude information.. ... Synaptics Incorporated

04/19/18 / #20180107317

Device and method for driving a display panel

A display driver includes: a plurality of source output terminals configured to be connected to a plurality of source input terminals of a display panel; a source driver circuitry configured to generate source signals to the source input terminals; a plurality of interconnections connected to a capacitance detection circuitry for touch sensing in a sensing region of the display panel, and a selector. The selector is configured to selectively connect the source output terminals to the source driver circuitry and the interconnections.. ... Synaptics Incorporated

04/19/18 / #20180107309

Display device configured to operate display drive and touch sensing in time sharing manner and semiconductor device to be employed thereon

The semiconductor device is intended for connection with an in-cell type display touch panel having a plurality of common electrodes, a reference voltage for display is applied to the common electrodes in a display drive period, and the common electrodes serve as sensor electrodes in a touch detection period. The semiconductor device includes a dc level shift circuit operable to shift the dc level of a toggle signal output by a toggle drive circuit to the reference voltage. ... Synaptics Incorporated

04/05/18 / #20180096186

Optical sensor with angled reflectors

Systems and methods for optical imaging using an optical sensor in an active area of the display are described. The optical sensor includes a set of detector elements positioned in a detector plane; a transparent layer; and a set of first reflective surfaces in the transparent layer. ... Synaptics Incorporated

04/05/18 / #20180095557

Inflection based bending signal abstraction from a mixed signal

A method for performing capacitive force sensing involves acquiring a plurality of changes of capacitance at a plurality of sensor electrodes, determining an input object location, obtaining a mixed signal representing the plurality of changes of capacitance at the input object location, wherein the mixed signal comprises a touch signal portion and a bending signal portion, identifying at least one inflection point using the mixed signal, using the at least one inflection point, identifying a touch signal region of the mixed signal, performing curve fitting to complete the bending signal portion in the touch signal region of the mixed signal to obtain a completed bending signal, and determining an applied force based on the completed bending signal.. . ... Synaptics Incorporated

04/05/18 / #20180095521

Retention mode operation for reduced standby consumption in touch solutions

Embodiments described herein include a method for reducing power consumption in a capacitive touch sensor. The method includes driving the capacitive touch sensor with an operating voltage at a first voltage level. ... Synaptics Incorporated

04/05/18 / #20180095488

Frequency compensation for linear regulators

A linear voltage regulator and associated integrated circuit and method are disclosed. The linear voltage regulator is operable within a plurality of predefined operational modes, and comprises a pass element configured to generate an output voltage based on a received input voltage. ... Synaptics Incorporated

03/29/18 / #20180088706

Mutual capacitive sensing on a matrix sensor

An input device and related processing system and method are disclosed for acquiring capacitive measurements. The input device comprises a plurality of sensor electrodes having a repeating arrangement. ... Synaptics Incorporated

03/22/18 / #20180081098

Optical fingerprint sensor

Systems and methods for optical imaging are disclosed. The optical fingerprint sensor includes an image sensor array; a collimator filter layer disposed above the image sensor array, the collimator filter layer having an array of apertures; and an illumination layer disposed above the collimator filter layer. ... Synaptics Incorporated

03/15/18 / #20180074647

Semiconductor device

In a semiconductor device in which a reference voltage is generated by a reference voltage generation circuit, and the same reference voltage generated is used in a plurality of circuit units for the purpose of generating a voltage, a sampling and holding circuit of the reference voltage is provided in order to provide a standard voltage to the circuit units. A sampling and holding control circuit that controls the sampling and holding circuit instructs the sampling and holding circuit to perform a sampling operation of the reference voltage in case that the semiconductor device operates in a state where power supply noise of the reference voltage generation circuit falls within a predetermined range, and instructs the sampling and holding circuit to perform a holding operation of the reference voltage in case that the semiconductor device operates in a state where the power supply noise exceeds the predetermined range.. ... Synaptics Incorporated

03/15/18 / #20180074641

Touch detection circuit, touch detection program and touch detection method

Provided is a touch sensing circuit configured to sense an approach of a conductive object toward a sensor capacitor through measuring a sensor response signal generated by the sensor capacitor in response to a sensing wave signal applied to the sensor capacitor. The touch sensing circuit is connectable to a conversion circuit and a touch detection circuit. ... Synaptics Incorporated

03/08/18 / #20180068161

Low power navigation devices, systems and methods

A system and method are disclosed for conserving power during navigation, e.g., user device pointer/cursor navigation, using a fingerprint image sensor, that may comprise processing, via a computing device, fingerprint image sensor data indicative of finger position and movement with respect to a fingerprint image sensor surface in a finger navigation mode to determine if the finger is in a first finger navigation mode; processing, via the computing device, fingerprint image sensor data indicative of finger position and movement with respect to a fingerprint image sensor surface in a finger navigation mode to determine if the finger is in a second finger navigation mode; and transitioning, via the computing device, the fingerprint image sensor from a first power consumption mode to a second power consumption mode, based on detecting a transition from the first finger navigation mode to the second finger navigation mode.. . ... Synaptics Incorporated

03/08/18 / #20180067604

Touch force estimation

A processing system for multiple input object force estimation includes sensor circuitry and processing circuitry. The sensor circuitry is configured to acquire measurements of a sensing region using sensor electrodes. ... Synaptics Incorporated

03/08/18 / #20180067155

Capacitive sensor device

A capacitive sensor device comprises a first sensor electrode, a second sensor electrode, and a processing system coupled to the first sensor electrode and the second sensor electrode. The processing system is configured to acquire a first capacitive measurement by emitting and receiving a first electrical signal with the first sensor electrode. ... Synaptics Incorporated

03/01/18 / #20180059820

Full-bridge strain-gauge array of finger thermal compensation

A force sensor having a strain gauge array including force sensing electrodes arranged in a full-bridge configuration comprising at least two of a first resistor type and at least two of a second resistor type, wherein the at least two of the first resistor type form a first force sensing node and the at least two of the second resistor type form a second force sensing node, a processing system communicatively coupled to the force sensing electrodes, the processing system being configured to receive a first signal from the first force sensing node and a second signal from the second force sensing node, wherein the first signal includes a thermal response, and the second signal includes the thermal response and an applied force, and remove the thermal response by comparing the first and second signals to obtain the applied force.. . ... Synaptics Incorporated

02/22/18 / #20180054550

Device for vertical and horizontal synchronization in display system

A display driver for a display device including a sync extraction circuit configured to generate a vertical sync source signal in response to a vertical sync period start instruction indicating a start of a vertical sync period, a timing generator configured to generate an internal vertical sync signal in response to the vertical sync source signal; and a drive circuit configured to drive the display panel in synchronization with the internal vertical sync signal. . ... Synaptics Incorporated

02/22/18 / #20180054336

Device and method for skew compensation between data signal and clock signal

A semiconductor device includes first and second buffers respectively outputting reception data and clock signals; a latch circuit latching the reception data signal in response to the reception clock signal; a delay circuitry delaying the reception clock signal by a set delay time; and a delay control circuitry which searches a first delay time while increasing the set delay time from an initial value; searches a second delay time while increasing the set delay time from the first delay time; searches a third delay time while decreasing the set delay time from the second delay time; and determines an optimum delay time from the first and third delay times. The first and third delay times are determined so that the reception data is stabilized to a first value and the second delay time is determined so that the reception data is stabilized to a second value.. ... Synaptics Incorporated

02/15/18 / #20180046321

Object filter

A method of capacitive sensing that may include obtaining, from various sensor electrodes, a capacitive image of a sensing region. The capacitive image may describe changes in variable capacitance among the sensor electrodes. ... Synaptics Incorporated

02/01/18 / #20180032786

Systems and methods for image alignment

Systems and methods for image alignment are disclosed. A method includes: determining a first set of patches for a first image and a second set of patches for a second image, wherein each patch in the first and second sets of patches comprises a portion of the first and second image, respectively; determining a set of possible match pairings of a patch from the first set and a patch from the second set; for each match pairing in the set of possible match pairings, computing a transformation operation to align the patch from the first set of patches and the patch from the second set of patches in the match pairing; grouping the match pairings into clusters based on parameters of the transformation operations of the match pairings; and, performing the transformation operation corresponding to at least one cluster to align the first image to the second image.. ... Synaptics Incorporated

01/25/18 / #20180025691

Display control device and display panel module

A halt period is inserted between a drive period in an odd-numbered field and a drive period in an even-numbered field in interlace driving. When drive signals driving subpixels are time-divisionally supplied to the display panel in units of subpixel types, switch control signals controlling source line switches which distribute the drive signals associated with respective subpixels to the corresponding source lines are generated so that the number of switching of the source line switches are reduced.. ... Synaptics Incorporated

01/18/18 / #20180018046

System and method for input sensing

In a method of input sensing and exclusion, an input is detected within a sensing region of an input device. It is determined that the input is along an edge of the input device. ... Synaptics Incorporated

01/04/18 / #20180005394

Systems and methods for point-based image alignment

Systems and methods for point-based image alignment are disclosed. A method includes: selecting first and second couplets of feature points corresponding to first and second biometric images, respectively, and calculating a rotation-invariant parameter for each of the first and second couplets of feature points; determining that the first couplet matches the second couplet based on a difference between the rotation-invariant parameter for the first couplet of feature points and the rotation-invariant parameter for the second couplet of feature points; determining a candidate transformation operation that aligns the first couplet of feature points to the second couplet of feature points; determining a goodness of fit between a pictorial representation of the first biometric image and a pictorial representation of the second biometric image with the transformation operation applied; and, determining that the candidate transformation aligns the first biometric image to the second biometric image based on the goodness of fit.. ... Synaptics Incorporated

01/04/18 / #20180004924

Systems and methods for detecting biometric template aging

Systems and methods for biometric authentication are disclosed. A system comprises a biometric sensor and a processing system configured to: receive, from the biometric sensor, data corresponding to a first attempt to validate an identity of a user; determine that a first score associated with the first attempt satisfies an authentication condition associated with a first biometric template; receive, from the biometric sensor, data corresponding to at least one subsequent attempt to validate the identity of the user, wherein the at least one subsequent attempt is received after the first attempt; determine that a second score associated with the at least one subsequent attempt satisfies the authentication condition; identify, based on the first score and the second score, a trend in the scores associated with attempts that satisfy the authentication condition; and, in response to identifying the trend, request the user to enroll a second biometric template.. ... Synaptics Incorporated

01/04/18 / #20180004501

Updating program code stored in an external non-volatile memory

In a method of updating program code in an external non-volatile memory, updated program code is received at an application specific integrated circuitry (asic). The updated program code is received from a host device. ... Synaptics Incorporated

01/04/18 / #20180004348

Calibrating a continuous-time receiver for capacitive sensing

Embodiments herein describe input devices that include receivers for sampling capacitive sensing signals. In one embodiment, the receivers perform continuous demodulation where the sampling of the capacitive sensing signal is not synchronized with the modulated signal applied to the sensor. ... Synaptics Incorporated

01/04/18 / #20180004338

Normalizing capacitive sensing measurements to reduce effects of low ground mass and noise

An input device can be capacitive coupled to earth ground and noise sources which can interfere with the ability of the input device to detect an input object. To mitigate the effects from these capacitive couplings, the input device drives a modulated capacitive sensing signal onto a plurality of sensor electrodes in parallel. ... Synaptics Incorporated

01/04/18 / #20180004337

Force sensing in a touch display

Embodiments described herein include a display device that includes a display substrate coupled to a frame. A stiffener substrate is also coupled to the frame. ... Synaptics Incorporated

01/04/18 / #20180004336

Detecting applied forces on a display

The input devices described herein include force sensor electrodes that use capacitive sensing to measure the force with which an input object (e.g., a finger or stylus) presses down on the input device. To measure this force, the input device includes a compressible layer disposed between a backlight of a display in the input device and a cover window of the display. ... Synaptics Incorporated

01/04/18 / #20180004332

Hybrid force measurement

Hybrid force sensing includes acquiring absolute capacitance measurements of the absolute capacitance of at least one frame side electrode, acquiring mutual capacitance measurements of the mutual capacitance between the at least one frame side electrode and at least one display side electrode. Hybrid force sensing further includes determining an absolute capacitance derived force from the absolute capacitance measurements, determining a mutual capacitance derived force from the mutual capacitance measurements, and combining the absolute capacitance derived force and the mutual capacitance derived force to obtain a combined force. ... Synaptics Incorporated

01/04/18 / #20180004327

Multi-sensor touch integrated display driver configuration for capacitive sensing devices

Embodiments of the disclosure generally provide an integrated control system having an integrated controller that is configured to provide both display updating signals to a display device and a capacitive sensing signal to a sensor electrode that is disposed within the integrated input device. The internal and/or external signal routing configurations described herein can be adapted to reduce signal routing complexity typically found in conventional devices and reduce the effect of electrical interference created by the capacitive coupling formed between the display routing, capacitive sensing routing and/or other components within the integrated control system. ... Synaptics Incorporated

01/04/18 / #20180004321

Display control and touch control device, and display and touch sense panel unit

Provided is a technique which enables the avoidance of a temporal damage to a panel module, and keeps a voltage load on a display panel circuit node from becoming excessively large even if a constant voltage is applied to the node for a longer time exceeding a display drive term in a non-display drive term, provided that a display frame period is divided to have display and non-display drive terms. In performing display and touch-sensing actions on condition that a display frame period is divided to include display and non-display drive terms, an operation source voltage supplied to a panel module during the non-display term where touch sensing is performed is smaller, in absolute value, than that supplied in the display term, whereby a voltage load applied to an input circuit node of a panel module for a longer time exceeding the display term is kept from being excessively large.. ... Synaptics Incorporated

01/04/18 / #20180004320

Combined force and touch sensor

This disclosure generally provides input devices, processing systems and methods for touch and force sensing utilizing combination sensor conductors. The combination sensor conductors are configurable as capacitive sensor conductors and force sensor conductors via operation of a processing system.. ... Synaptics Incorporated

01/04/18 / #20180004317

Input device receiver with delta-sigma modulator

A processing system, and associated input device and method are disclosed suitable for reducing a receiver size within the input device. The processing system comprises a delta-sigma modulator comprising one or more input nodes configured to receive a signal based on a sensor signal received from at least a first sensor electrode of the plurality of sensor electrodes. ... Synaptics Incorporated

12/28/17 / #20170374201

Robust acoustic echo cancellation for loosely paired devices based on semi-blind multichannel demixing

A method for echo cancellation in multichannel audio signals includes receiving a plurality of time-domain signals, including multichannel audio signals and at least one reference signal, transforming the time-domain signals to k under-sampled complex-valued subband signals using an analysis filter bank. A probability of acoustic echo dominance is produced using a single-double talk estimator, and a multichannel source separation is performed based on the probability to decompose the audio signals into a near-end source signal and a residual echoes using source separation. ... Synaptics Incorporated

12/28/17 / #20170372049

Systems and methods for sequential biometric matching

Systems and methods for sequential matching during user authentication are disclosed. A process for authenticating includes acquiring a first set of biometric data during a first authentication attempt and comparing the first set of biometric data with a set of enrollment data. ... Synaptics Incorporated

12/28/17 / #20170371443

Selective receiver electrode scanning

A processing system, including: a sensor module that: receives, in a first sensing modality, first resulting signals from electrodes in a sensing region; and receives, in a second sensing modality, second resulting signals from a subset of receiver electrodes; and receiver hardware channels that process the second resulting signals, where the number of receiver electrodes exceeds the number of hardware channels; and a determination module that: measures a first plurality of capacitive changes based on the first resulting signals; determines, based on the first plurality of capacitive changes, the section of the sensing region in which an input object is located; selects the subset of the receiver electrodes corresponding to the section; measures a second plurality of capacitive changes based on the second resulting signals; and determines a position of the input object within the section based on the second plurality of capacitive changes.. . ... Synaptics Incorporated

12/21/17 / #20170364184

Transcapacitive and absolute capacitive sensing profiles

A method of capacitive sensing may include driving a first modulated signal onto a first sensor electrode in an input device and a second modulated signal onto a second sensor electrode in the input device. The method may further include receiving, simultaneously, a first resulting signal from the first sensor electrode and a second resulting signal from the second sensor electrode. ... Synaptics Incorporated

12/07/17 / #20170353188

Series regulator and semiconductor integrated circuit

. . The series regulator has: a differential amplifier; a level shifter including a level shift transistor with a drain connected to a gate; and a source follower including an output transistor. The differential amplifier includes an amplification stage having a non-inverting input terminal for input of a reference voltage, an inverting input terminal for input of a feedback voltage, and an amplifier output terminal. ... Synaptics Incorporated

12/07/17 / #20170351903

Systems and methods for authenticating a user of a biometric sensor

A novel system, device and method of validation is provided for sensing a biometric such as a fingerprint, where biometric data corresponding to the biometric entity such as a fingerprint is then transmitted to a host configured to perform a plurality of authentication processes to authenticate the biometric data. At least one of the plurality of authentication steps is then validated. ... Synaptics Incorporated

11/30/17 / #20170345390

Device and method for display color adjustment

A color adjustment circuit includes: a correction processing circuit configured to generate an output image data by performing color adjustment correction on an input image data; and a correction factor calculation circuit configured to calculate correction factors used for the color adjustment correction. The correction factor calculation circuit calculates a white color distance, a complementary color distance, and an elementary color distance and calculates the correction factors based on the white color distance, the complementary color distance and the elementary color distance. ... Synaptics Incorporated

11/30/17 / #20170344156

Systems and methods for switching sensing regimes for gloved and ungloved user input

The various embodiments described herein provide input devices configured to selectively operate in two different sensing regimes. The first sensing regime is configured to determine positional information for ungloved fingers in the sensing region. ... Synaptics Incorporated

11/30/17 / #20170344149

Force sensor with uniform response in an axis

An input device includes an input surface having a first axis and a second axis, and force sensor electrodes. The force sensor electrodes have a cumulative capacitive sensor response to a force on the input surface. ... Synaptics Incorporated

11/30/17 / #20170343386

Touch sensing circuit and semiconductor device

A touch sensing circuit operable to sense a conductor approaching a sensor capacitance by measuring a response signal obtained from the sensor capacitance according to an applied detection signal includes an a/d converter and a fourier transform device. The a/d converter samples the response signal with a predetermined cycle, followed by conversion to a digital value and outputs as time-series response data. ... Synaptics Incorporated

11/23/17 / #20170336904

Capacitive pointing stick assembly

An example isometric input device configured to control a user interface indicator of an electronic device includes a plurality of sensor electrodes disposed on a sensor substrate. The input device further includes a spring plate disposed between top and bottom spacers, the bottom spacer contacting the sensor substrate and defining a gap between the sensor electrodes and the spring plate. ... Synaptics Incorporated

11/16/17 / #20170332090

Device and method for block compression and block decompression

An image compression device includes: a first compression processing circuit configured to generate a first compressed image data by performing a first block compression process on an image data and a dither value generator circuit. When the first compressed image data associated with a compression target block is generated, the dither value generator circuit is configured to generate at least one dither value in response to block coordinates indicating a position of the compression target block in an image and the first compression processing circuit is configured to perform a quantization process using the at least one dither value in the first block compression process.. ... Synaptics Incorporated

11/16/17 / #20170330498

Method and device for display color adjustment

Provided is a color adjustment method for a display apparatus. The color adjustment method includes: measuring first luminance coordinate data indicating a luminance and color coordinates of a color displayed on a display device when image data corresponding to a white point is supplied to a drive circuitry; measuring second luminance coordinate data indicating luminances and color coordinates of colors displayed on the display device when image data corresponding to the white color of intermediate grayscale values are supplied to the drive circuitry; measuring third luminance coordinate data indicating a luminance and color coordinates of a color displayed on the display device for each of r, g and b elementary color points when image data corresponding to each of the r, g and b elementary color points is supplied to the drive circuitry; and calculating correction parameters based on the first to third luminance coordinate data.. ... Synaptics Incorporated

10/12/17 / #20170293823

Calculation of degree of similarity between two images

An image processing apparatus includes: a first circuit which calculates values f(rpi), f(gpi) and f(bpi) by applying a function f(x) to an r grayscale value rr, a g grayscale value gpi and a b grayscale value bpi of each pixel i of a first image; a second circuit which calculates values f(rqi), f(gqi) and f(bqi)i) by applying the function f(x) to an r grayscale value rqi, a g grayscale value gqi and a b grayscale value bqi of each pixel i of a second image; and a similarity calculation circuit which calculates a degree of similarity between the first and second images depending on. . ... Synaptics Incorporated

10/05/17 / #20170288615

Temperature compensated offset cancellation for high-speed amplifiers

An apparatus, system, and method are disclosed for compensating input offset of an amplifier having first and second amplifier output nodes. The method comprises generating a proportional-to-absolute temperature (ptat) current, generating a complementary-to-absolute temperature (ctat) current, and selecting, based on the input offset, one of the first and second amplifier output nodes into which a compensation current is to be coupled. ... Synaptics Incorporated

10/05/17 / #20170286746

Efficient determination of biometric attribute for fast rejection of enrolled templates and other applications

A biometric input system includes: a biometric sensor, configured to generate a biometric image comprising features of an input biometric object; and a processing system, configured to receive the biometric image, generate a feature map from the biometric image, perform a distance transform on the feature map, and determine an attribute of the biometric image from the distance transform. The processing system is further configured to compare the determined attribute of the biometric image with corresponding attributes of enrolled biometric images, and, based on the comparison, to eliminate enrolled biometric images from a matching process for the biometric image, wherein the matching process is performed after the elimination and comprises comparison of the biometric image to remaining enrolled biometric images based on one or more attributes of the biometric image other than the determined attribute.. ... Synaptics Incorporated

10/05/17 / #20170286743

Biometric sensor with diverging optical element

An optical biometric sensor includes an array of light sensing elements, an array of diverging optical elements, and an array of apertures disposed between the array of light sensing elements and the array of diverging optical elements. Light incident on the diverging optical elements within a limited acceptance angle passes through the apertures and towards the light sensing elements and light incident on the diverging optical elements outside of the limited acceptance angle diverges away from the apertures.. ... Synaptics Incorporated

10/05/17 / #20170286742

Optical biometric sensor having diffractive optical elements

An optical sensor for imaging a biometric object includes: a cover layer transparent to light reflected off the biometric object; an optical layer, disposed below the cover layer, having a plurality of diffractive optical elements; and a sensing layer, having a plurality of sensing elements disposed below the optical layer, each of the sensing elements being configured to detect light from the biometric object. The plurality of diffractive optical elements of the optical layer are configured to direct light from the biometric object to the plurality of sensing elements.. ... Synaptics Incorporated

10/05/17 / #20170285859

Reduced noise by performing processing during low-noise periods of interfering circuitry

An input device, system, and processing system are disclosed for a display device with an integrated sensing device. The input device comprises a plurality of sensor electrodes, and a processing system coupled with the plurality of sensor electrodes. ... Synaptics Incorporated

10/05/17 / #20170285857

Dynamic differential algorithm for side touch signals

Input devices described herein include sensing regions that permit the device to identify a location of input objects along a side of the device. To perform gesture detection, an input device selects baseline signals which are subtracted from capacitive sensing signals captured using the sensor electrodes in the sensing region. ... Synaptics Incorporated

10/05/17 / #20170285836

Resolving touch and press for multiple input objects

A processing system for an input device, including: sensor circuitry configured to receive resulting signals from a plurality of force sensors of the input device; and processing circuitry configured to: determine a first position of a first input object and a second position of a second input object on a surface of the input device; determine a plurality of force values based on the resulting signals; calculate a first aggregate force metric for a first region of the input region based on a first subset of the plurality of force values; determine that the first region has an input force based on a first comparison involving the first aggregate force metric; calculate a first distance between the first position and a first region and a second distance between the second position and the first region; and determine that the first input object is applying the input force in response to the first distance being smaller than the second distance.. . ... Synaptics Incorporated

10/05/17 / #20170285835

Per-finger force detection using segmented sensor electrodes

Techniques for obtaining force-based data of an input device are provided. The techniques include driving sensor electrodes in transcapacitive mode and in absolute capacitive mode, obtaining profiles for each of the modes, scaling the transcapacitive profile, and subtracting the scaled transcapacitive profile from the profile for absolute capacitive sensing. ... Synaptics Incorporated

10/05/17 / #20170285834

Grip management

Grip management includes determining, using first changes of capacitance of a sensing region of an input device, a first signal level corresponding to a first input object satisfying a size threshold and being proximate to a first side of the input device at a first time, and determining a first signal level threshold based on the first signal level. The grip management further includes determining, using second changes of capacitance of the sensing region, a second signal level corresponding to the first input object being proximate to the first side of the input device at a second time, and detecting a squeeze of the input device based at least in part on the second signal level satisfying the first signal level threshold.. ... Synaptics Incorporated

10/05/17 / #20170285833

Capacitive sensing device with single reference channel

An example a processing system for a capacitive sensing device includes a reference transmitter coupled to a reference capacitance. The processing system further includes a charge accumulation circuit having an input coupled to the reference transmitter through the reference capacitance and configured to generate an integrated signal, a demodulator circuit having an input coupled to an output of the charge accumulation circuit and configured to demodulate the integrated signal to generate at least one demodulated signal, a sampling circuit having an input coupled to an output of the demodulator circuit and configured to sample the demodulated signal(s), a first reference buffer coupled to an output of the sampling circuit, the first reference buffer outputting a first voltage reference for the capacitive sensing device, and a second reference buffer coupled to the output of the sampling circuit, the second reference buffer outputting a second voltage reference for the capacitive sensing device.. ... Synaptics Incorporated

10/05/17 / #20170285797

Combining trans-capacitance data with absolute-capacitance data for touch force estimates

Techniques for obtaining force-based data of an input device are provided. The techniques include driving sensor electrodes in transcapacitive mode and in absolute capacitive mode, obtaining profiles for each of the modes, scaling the transcapacitive profile, and subtracting the scaled transcapacitive profile from the profile for absolute capacitive sensing. ... Synaptics Incorporated

10/05/17 / #20170285796

Likelihood detection of pressing finger in two-finger touch

A processing system for a force sensing device, including: sensor circuitry that receives resulting signals from force sensors; and processing circuitry that: determines a first location of a first input object and a second location of a second input object on a surface; determines force values for the force sensors based on the resulting signals; obtains a first plurality of expected force values for the force sensors based on the first location and a second plurality of expected force values for the force sensors based on the second location; executes a first comparison of the first plurality of expected force values to the force values; executes a second comparison of the second plurality of expected force values to the force values; and determines, based on the first comparison and the second comparison, that the first input object is applying an input force to the surface.. . ... Synaptics Incorporated

10/05/17 / #20170285795

Capacitive sensing using non-integer excitation

Capacitive sensing includes concurrently driving a first transmitter electrode with a first transmitter signal and a second transmitter electrode with a second transmitter signal. The first transmitter signal is based on a first digital code and the second transmitter signal is based on a second digital code. ... Synaptics Incorporated

10/05/17 / #20170285794

Capacitive side position extrapolation

A method for capacitive sensing includes acquiring a mutual capacitive measurement including effects of sensing signals of a sensing region, and acquiring an absolute capacitive measurement including effects of the sensing signals. The method further includes performing a comparison of the mutual capacitive measurement and the absolute capacitive measurement, and detecting a presence of an input object proximate to a side surface of an input device based on the comparison. ... Synaptics Incorporated

10/05/17 / #20170285793

Optimizing pixel settling in an integrated display and capacitive sensing device

An example method of performing capacitive sensing and display updating in an integrated capacitive sensing device and display device includes driving a plurality of sensor electrodes of the capacitive sensing device for input sensing during a blanking period. The method further includes driving a plurality of source lines using a plurality of source drivers during the blanking period to update a first display line of the display device. ... Synaptics Incorporated

10/05/17 / #20170285773

Active pen signal detection

In a method of active pen signal detection, a signal is received from an active pen, wherein the active pen is configured for use with a capacitive sensing input device. At least one of downconverting and aliasing is performed on the signal to achieve a resulting signal. ... Synaptics Incorporated

10/05/17 / #20170284379

Shape memory haptic actuator device

A haptic actuator and method for manufacturing the same. The haptic actuator may include a slider having first interlocking sliding features and a first engagement surface; and a base having second interlocking sliding features and a second engagement surface. ... Synaptics Incorporated

09/28/17 / #20170278805

Large scale integrated circuit chip and large scale integrated circuit wafer

A large scale integrated circuit chip includes a semiconductor circuit having a multilayered wiring structure, a metal guard ring surrounding the semiconductor circuit, and a plurality of external connection terminals, on a semiconductor circuit. The plurality of external connection terminals connect to an uppermost-layer wiring of the multilayered wiring structure and are exposed on a surface of the large scale integrated circuit chip. ... Synaptics Incorporated

09/28/17 / #20170278460

Semiconductor circuit for digital-analog conversion and impedance conversion

A semiconductor circuit includes first and second da converters which selects first and second reference voltages in response to upper m bits of input digital data, a select circuitry which outputs first to n-th selected input voltages in response to lower n bits of the input digital data; first to n-th differential input stages, an output stage and a first tail current source. Each of the first to n-th differential input stages includes a transistor pair. ... Synaptics Incorporated

09/28/17 / #20170277350

Force sensor recalibration

Embodiments described herein include a method for calibrating capacitive force sensors. The method includes measuring a force level at each of a first electrode and a second electrode. ... Synaptics Incorporated

09/28/17 / #20170277296

Force sensing within display stack

Embodiments described herein include an input device and associated processing system for sensing force applied by input objects. The input device comprises a display device comprising a plurality of layers formed as a display stack, the display stack including a top surface. ... Synaptics Incorporated

09/28/17 / #20170277295

Capacitive sensing using discrete lighting elements

An example processing system for a capacitive input device includes a first interface coupled to at least one first electrode of at least one lighting element and a second interface coupled to at least one second electrode of the at least one lighting element spaced apart from the at least one first electrode. A controller is configured to: forward-bias the at least one lighting element during first time periods to provide illumination; drive the at least one first and the at least one second electrodes with substantially the same voltage during second time periods; and drive the at least one first electrode with a modulated voltage relative to a reference voltage while guarding the at least one second electrode during third time periods to measure capacitance. ... Synaptics Incorporated

09/28/17 / #20170277294

Inflection based calibration method for force detector

Embodiments described herein include a method for calibrating capacitive force sensors. The method includes acquiring a plurality of changes of capacitance at a plurality of sensor electrodes in a capacitive sensor, where the plurality of changes of capacitance represents a force. ... Synaptics Incorporated

09/28/17 / #20170277293

Capacitive sensing with high pass filtering for segmantation

Embodiments described herein include a method for using multiple filtered images. The method includes acquiring changes of capacitance in a sensing region at a plurality of sensor electrodes in a capacitive sensor. ... Synaptics Incorporated

09/28/17 / #20170277265

Single axis gesture recognition

Embodiments herein describe an input device that includes a sensing region that permits the device to identify a location of an input object (e.g., a finger) along a side of the device. For example, the sensing region may include sensor electrodes that form a stack with display elements used to display images to the user. ... Synaptics Incorporated

09/21/17 / #20170270865

Drive circuitry configuration in display driver

A display driver is provided which drives a display panel. The display driver includes first and second buffer amplifiers associated with first and second pixels positioned adjacent in a horizontal direction; first and second connection switches; and a controller. ... Synaptics Incorporated

09/21/17 / #20170269778

Frequency shifting techniques for concurrent display driving and touch sensing

Techniques for adjusting a sensing frequency of a sensing signal are provided. The techniques include performing sensing and display updates with frequencies that have an integer ratio. ... Synaptics Incorporated

09/21/17 / #20170269772

Display control and touch detection device, semiconductor integrated circuit

A display control and touch detection device is capable of controlling display and non-display terms in start timing depending on a result of touch detection, and includes a nonvolatile memory and a control logic which selectively uses data stored in the memory according to a display mode. The control logic changes the display and non-display terms in start timing in display frame periods, whereby the phenomenon of appearance of an undesired brightness difference at a fixed location in a display frame with no display, and the phenomenon of occurrence of flicker owing to the undesired brightness difference can be suppressed. ... Synaptics Incorporated

09/21/17 / #20170269729

Moisture management

A method for moisture detection includes obtaining absolute capacitive sensor data, and processing circuitry, determining a contiguous region in a capacitive image generated based on the absolute capacitive sensor data, determining a concavity parameter of the contiguous region, and detecting a presence of moisture based at least in part on the concavity parameter. The method further includes operating based on a presence of moisture.. ... Synaptics Incorporated

09/14/17 / #20170262118

Single layer sensor electrode layout for edge area sensing

A sensor electrode pattern is described that provides for capacitive sensing in an edge area of a host device. The sensor electrode pattern can be disposed in a single-layer configuration. ... Synaptics Incorporated

09/14/17 / #20170262110

Hybrid force sensor

An input device includes an input surface, electrodes configured to sense input objects in a sensing region overlapping the input surface, a compressible layer, and a display separated from a housing by the compressible layer. The input device further includes at least one force sensing electrodes configured to sense force applied to the input surface. ... Synaptics Incorporated

09/14/17 / #20170262095

Capacitive sensing in an led display

An example processing system for an integrated display and capacitive sensing device, where the display includes light-emitting diode (led) pixels, is described. The processing system includes: isolated supply domains having inputs that receive an anode voltage and a cathode voltage, first outputs that supply modulated anode voltages, and second outputs that modulated cathode voltages, where the modulated anode voltages and the modulated cathode voltages are constant with respect to each other and modulated with respect to an external reference voltage; a multiplexer circuit having inputs coupled the isolated supply domains, the anode voltage, and the cathode voltage, and having outputs coupled to the led pixels; and control logic configured to control the multiplexer circuit to selectively supply the anode voltage and the cathode voltage, or the modulated anode voltages and the modulated cathode voltages, to the led pixels.. ... Synaptics Incorporated

09/07/17 / #20170255295

Hybrid in-cell sensor topology

An input device and associated processing system and method are disclosed. The input device comprises a lens layer, and a display device comprising a plurality of layers. ... Synaptics Incorporated

09/07/17 / #20170255294

Mitigating spatially correlated noise in data from capacitive sensors

This disclosure generally provides an input device with a matrix sensor that includes a plurality of sensor electrodes arranged on a common surface or plane. Moreover, the input device includes routing traces that electrically couple the sensor electrodes to analog front ends (afes). ... Synaptics Incorporated

08/31/17 / #20170249049

Adaptive mechanical change compensation for force detector

A capacitive sensing device is configured to detect force being applied to an input surface of the device by an input object, in addition to the position of the input object using touch sensing methods. Embodiments generate a compensation factor that is used to determine the force information in order to compensate for physical changes to the capacitive sensing device over time, air-gap non-uniform distribution, and other mechanical variations and changes.. ... Synaptics Incorporated

08/24/17 / #20170243550

Dithering a clock used to update a display to mitigate display artifacts

A display device can use clock dithering to spread the frequency spectrum of the clock signal (and the signals derived therefrom) to mitigate interference with other components or systems in a host device. However, dithering the clock signal can introduce display artifacts into the display device. ... Synaptics Incorporated

08/24/17 / #20170242539

Use based force auto-calibration

A processing system for an input device, the processing system including sensor circuitry communicatively coupled to a plurality of position sensor electrodes and a plurality of force sensor electrodes, and a sensor module with circuitry. The sensor module is configured to acquire a plurality of changes in capacitance from the plurality of force sensor electrodes, which occurs in response to a deflection of the sensor electrodes by an input force. ... Synaptics Incorporated

08/24/17 / #20170242523

Transcapacitive touch and force sensing in an input device

An example input device for force and proximity sensing includes a plurality of touch electrodes including touch transmitter electrodes and touch receiver electrodes, and a force electrode layer including a plurality of force electrodes. The input device further includes a resilient material layer disposed between the plurality of touch electrodes and the force electrode layer. ... Synaptics Incorporated

08/24/17 / #20170242505

Force calibration for temperature

A processing system includes sensor circuitry and processing circuitry. The sensor circuitry is configured to be coupled to force sensor electrodes, and is configured to drive the force sensor electrodes to obtain capacitive measurements. ... Synaptics Incorporated

08/17/17 / #20170235392

Device and method for self-capacitance touch sensing

A touch panel device includes a touch panel including sensing electrodes, a selector circuitry; a sensing circuitry configured to generate sensed signals having signal levels depending on self-capacitances of connected ones of the sensing electrodes, and a processor configured to perform touch sensing of the touch panel, based on the sensed signals. When the touch panel device is placed in a first state, the selector circuitry electrically connects first sensing electrodes to the sensing circuitry in each operation cycle. ... Synaptics Incorporated

08/10/17 / #20170229060

Display driver and display panel module

Provided is a display driver which can be used in common in any of cof mounting and cog mounting. In the display driver, a position (or write/output position) of display data output by an output circuit can be changed along a direction of an array of external output terminals s1 to s540 according to mode data, whereby an array of external output terminals to use for output can be selected from more than one kind of arrays different in layout pitch. ... Synaptics Incorporated

08/10/17 / #20170228573

Transparent fingerprint sensor pattern

A transparent sensor pattern suitable for sensing fingerprint information in a display area is disclosed. The sensor pattern includes a receiver electrode extending in a first direction and a transmitter electrode extending in a second direction different from the first direction. ... Synaptics Incorporated

08/03/17 / #20170221448

Image data transfer system, transmitter circuit and receiver circuit

An image data transfer system includes a receiver and a transmitter configured to sequentially receive compressed image data and sequentially transmit transmission data corresponding to the compressed image data to the receiver. The transmitter is configured to, in transmitting a specific transmission data, perform data comparison of bits of a compressed image body data of a specific compressed image data with bits of a previous transmission data transmitted over signal lines allocated to the compressed image body data, incorporate the compressed image body data of the specific compressed image data or the bit-inverted data corresponding thereto into the specific transmission data, in response to the result of the data comparison, and incorporate the compression code of the specific compressed image data into the specific transmission data independently of the result of the data comparison.. ... Synaptics Incorporated

08/03/17 / #20170220882

Methods and systems for enrolling biometric data

Methods and systems for enrolling biometric data that is easier to use and provides a more positive end user experience. Additionally, machine readable medium storing instructions configurable to achieve the results when executed by a computing device are also provided.. ... Synaptics Incorporated

08/03/17 / #20170220844

Optical fingerprint sensor under a display

An optical sensor system includes: an input surface providing a sensing region for a biometric object; a plurality of display elements, disposed beneath the input surface, configured to emit light to provide a display; an aperture layer, disposed beneath the plurality of display elements; a collimator layer, disposed beneath the aperture layer; and a plurality of light sensing elements, disposed beneath the collimator layer, wherein the plurality of light sensing elements are configured to detect light from the sensing region that has passed through the aperture layer and the collimator layer.. . ... Synaptics Incorporated

08/03/17 / #20170220842

Initiating fingerprint capture with a touch screen

A method for initiating fingerprint capture in an electronic device is described. The device includes a touch screen with a sensing region, a touch controller, a fingerprint controller, and a host. ... Synaptics Incorporated

08/03/17 / #20170220840

Compound collimating system using apertures and collimators

An optical sensor system having a compound aperture and collimator structure for collimating light includes: an input surface providing a sensing region for a biometric object; an aperture layer, disposed beneath the input surface; a plurality of light-blocking structures, disposed beneath the aperture layer, forming a plurality of collimators; and an image sensor, disposed beneath the plurality of light-blocking structures, wherein the image sensor is configured to detect light from the sensing region that has passed through the aperture layer and the plurality of collimators.. . ... Synaptics Incorporated

08/03/17 / #20170220837

Fingerprint sensor and button combinations and methods of making same

It will be understood by those skilled in the art that there is disclosed in the present application a biometric sensor that may comprise a plurality of a first type of signal traces formed on a first surface of a first layer of a multi-layer laminate package; at least one trace of a second type, formed on a second surface of the first layer or on a first surface of a second layer of the multi-layer laminate package; and connection vias in at least the first layer electrically connecting the signal traces of the first type or the signal traces of the second type to respective circuitry of the respective first or second type contained in an integrated circuit physically and electrically connected to one of the first layer, the second layer or a third layer of the multi-layer laminate package.. . ... Synaptics Incorporated

08/03/17 / #20170220182

Integrated capacitive fingeprint sensor

An input device includes a first sensor array having a first plurality of sensor electrodes disposed in a sensing area, wherein the first sensor array has a first pixel density, and a second sensor array having a second plurality of sensor electrodes disposed in the sensing area, wherein the second sensor array has a second pixel density different from the first pixel density. The input device also includes a processing system coupled to the second plurality of sensor electrodes and configured to electrically float a sensor electrode in the second plurality of sensor electrodes during a sensing period of the first sensor array.. ... Synaptics Incorporated








ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009



###

This listing is an abstract for educational and research purposes is only meant as a recent sample of applications filed, not a comprehensive history. Freshpatents.com is not affiliated or associated with Synaptics Incorporated in any way and there may be associated servicemarks. This data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Synaptics Incorporated with additional patents listed. Browse our Agent directory for other possible listings. Page by FreshPatents.com

###