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Stmicroelectronics Asia Pacific Pte Ltd patents


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

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "S" | Stmicroelectronics Asia Pacific Pte Ltd-related inventors


Shift register utilizing latches controlled by dual non-overlapping clocks

Disclosed herein is an electronic device including a flip flop and clock generation circuitry for controlling the flip flop. The flip flop includes a master latch receiving input for the flip flop, with the master latch latching the received input to its output in response to a first clock. ... Stmicroelectronics Asia Pacific Pte Ltd

Multiple threshold motion tolerance to filter coordinate jitter in touch sensing

A touch screen controller includes input circuitry receiving touch data from a touch screen, and processing circuitry. The processing circuitry determines first coordinates of a touch at a first time, based upon the received touch data. ... Stmicroelectronics Asia Pacific Pte Ltd

Use of groove analysis in a touch screen device to determine occurrence of an elongated touch by a single finger

Disclosed herein is a touch screen controller operable with a touch screen. The touch screen controller includes input circuitry configured to receive touch data from the touch screen, and processing circuitry. ... Stmicroelectronics Asia Pacific Pte Ltd

Frequency detection to perform dynamic peak current control

The amount of power being output to the load is sensed by sampling the frequency of the pulse width modulation signal that is controlling the switch that is providing the power to the load. If the pulse width modulation signal has a high frequency, then it will be providing higher power to the load. ... Stmicroelectronics Asia Pacific Pte Ltd

Concurrent sensing in touch screen controller with improved noise rejection

Disclosed herein is an electronic device including a sensing layer including a plurality of sense lines, and a plurality of single ended charge converter circuits each receiving input from a corresponding one of the plurality of sense lines. The electronic device also includes a plurality of current mirror circuits, each respectively mirroring output from one of the plurality of single ended charge converter circuits so as to produce two substantially identical outputs for each of the plurality of single ended charge converter circuits. ... Stmicroelectronics Asia Pacific Pte Ltd

Differential sensing in touch screen controller with improved noise rejection

Disclosed herein is an electronic device including a display layer generating display noise based on scanning thereof and a sensing layer including a plurality of sense lines. The display noise is capacitively coupled from the display layer to each of the plurality of sense lines of the sensing layer. ... Stmicroelectronics Asia Pacific Pte Ltd

Force sensor dot pattern

The present disclosure provides a capacitive sensing structure for detecting a force touch in a touchscreen application. Performance uniformity of the force touch sensor is improved by providing a capacitive force touch structure having dot-pattern sensing electrodes of varying thickness, wherein the variation in electrode thickness corresponds to a relative displacement potential of portions of the sensing electrode. ... Stmicroelectronics Asia Pacific Pte Ltd

Reduction of noise in touch data samples via sampling during porch time of vsync and hsync signals

Disclosed herein is a touch screen controller for controlling touch sensing in a touch screen display, the touch screen display having a display layer controlled as a function of horizontal sync and vertical sync signals and a capacitive touch array comprised of drive lines and sense lines. The touch screen controller includes a driver and control circuitry. ... Stmicroelectronics Asia Pacific Pte Ltd

Parallel analysis of different sampling rates in a touch screen controller

A touch screen controller disclosed herein includes a circuit configured to generate a digital touch voltage comprises of samples, at a base sampling rate. The touch screen controller also includes a digital processing unit configured to analyze a first subset of samples of the digital touch voltage samples to determine noise content thereof, the first subset of samples corresponding to samples at a first investigated sampling rate that is a first function of the base sampling rate. ... Stmicroelectronics Asia Pacific Pte Ltd

Analog self capacitance sensing front end utilizing current conveyors

A touch screen controller includes a current conveyor having first and second inputs and first and second outputs, the first input being coupled to a self capacitance sense line. A driver is coupled to the second input and periodically drives the second input between high and low voltages. ... Stmicroelectronics Asia Pacific Pte Ltd

Touch screen self-capacitance foreign matter detection

A method for touch screen self-capacitance foreign matter detection for a capacitive touch screen is disclosed. By iteratively performing methods of self-capacitance scanning and foreign matter scanning foreign matter may be detected.. ... Stmicroelectronics Asia Pacific Pte Ltd

Hover rejection through dynamic thresholding

Disclosed herein is a touch screen controller that calculates a variance of an island in acquired touch data values. Where the variance exceeds a variance threshold, the island is validated as a representing touch. ... Stmicroelectronics Asia Pacific Pte Ltd

Dead zone compensation for touch screens

A method of compensated touch data values disclosed herein includes acquiring touch data values about a dead sensing zone of a touch screen, and determining a peak value of those touch data values. Then, a new peak value is calculated as a function of an average of the peak value and another value of the touch data value, and a sharpness value for the dead sensing zone is generated if a second highest value of the touch data values is less than the new peak value. ... Stmicroelectronics Asia Pacific Pte Ltd

Microelectronic fluid detector

A resistive microelectronic fluid sensor implemented as an integrated voltage divider circuit can sense the presence of a fluid within a fluid reservoir, identify the fluid, and monitor fluid temperature or volume. Such a sensor has biomedical, industrial, and consumer product applications. ... Stmicroelectronics Asia Pacific Pte Ltd

04/12/18 / #20180101266

Compensation for variations in a capacitive sense matrix

A readout device for a capacitive sense matrix includes a computer readable storage medium configured to store capacitance data. The capacitance data represents capacitance values of the capacitive sense matrix. ... Stmicroelectronics Asia Pacific Pte Ltd

04/12/18 / #20180101264

Capacitive discharge circuit for touch sensitive screen

A capacitive discharge circuit includes a line having a capacitance, a switched capacitor circuit including a capacitor, a switched circuit coupled to the line, and a voltage regulator coupled between the switched capacitor circuit and the switched circuit. A controller operates the switched capacitor circuit and switched circuit to in a first phase, charge the capacitor by coupling the capacitor between a common mode and a power supply, and in a second phase, discharge the capacitor by coupling the voltage regulator in series with the capacitor between the power supply node a ground. ... Stmicroelectronics Asia Pacific Pte Ltd

03/22/18 / #20180083606

Folded divider architecture

A circuit includes a counter circuit, a logic circuit, and a clock divider. The counter circuit includes a clock divider counter to be loaded with most significant bits of a divider value, and decremented at a same edge of each pulse of a clock signal. ... Stmicroelectronics Asia Pacific Pte Ltd

03/15/18 / #20180074651

Multi-touch integrity sensing for capacitive touch screen

A method for multi-touch integrity sensing for a multi-touch capacitive touch screen is disclosed. By determining the integrity of touches, a distinction is identified between wanted touches, such as via a finger or stylus, and unwanted touches such as via foreign matter, errors, and the like.. ... Stmicroelectronics Asia Pacific Pte Ltd

03/15/18 / #20180074619

System and method of communication between a capacitive touch screen and an active stylus

An active stylus is capacitively coupled to a capacitive touch panel for communication. The active stylus operates in a wait mode to receive initial communications from the panel. ... Stmicroelectronics Asia Pacific Pte Ltd

03/01/18 / #20180059818

Display noise compensation in touch screen display using capacitive dividers

An electronic device disclosed herein includes a display layer generating display noise based on scanning thereof, and a sensing layer including a plurality of sense lines. A common voltage layer is coupled to the display layer and the sensing layer, with the common voltage layer capacitively coupling the display noise from the display layer to the each of the plurality of sense lines of the sensing layer via a different parasitic impedance. ... Stmicroelectronics Asia Pacific Pte Ltd

02/15/18 / #20180046320

Sampling frequency and accumulator sweeping in a touch screen controller

A circuit described herein includes a charge to voltage converter circuit having an input coupled to receive a sense signal from a sense node associated with a mutual capacitance to be sensed, and an output. A reset switch is coupled between the output of the charge to voltage converter circuit and the input of the charge to voltage converter. ... Stmicroelectronics Asia Pacific Pte Ltd

02/15/18 / #20180046309

Highly efficient charge pump synchronized to the drive signal of a touch screen system

An alternating current (ac) drive signal having a first frequency and a high logic level at a boosted supply voltage is applied to drive a capacitive sensing line of a capacitive touch panel. The boosted supply voltage is generated by boosting an input voltage. ... Stmicroelectronics Asia Pacific Pte Ltd

01/18/18 / #20180020033

Dpcm data compression using compressed data tags

Disclosed herein is a method including receiving a stream of packets into a buffer, each packet having a processed video data portion and a page count portion, the processed video data portion being a result of a modulo operation performed on a word of video data, and the page count portion being a data page number on which the word of video data is to be placed. Each packet is read from the buffer, and an output packet including the video data portion and a data tag portion is generated therefrom. ... Stmicroelectronics Asia Pacific Pte Ltd

01/18/18 / #20180018037

Correlated data acquisition among different touch sensors

Disclosed herein is an electronic device including a first touch circuit to be coupled to a first touch sensing unit, the first touch sensing unit having first drive lines and first sense lines intersecting the first drive lines. A second touch circuit is to be coupled to a second touch sensing unit, the second touch sensing unit having second drive lines and second sense lines intersecting the second drive lines. ... Stmicroelectronics Asia Pacific Pte Ltd

01/11/18 / #20180011596

Water rejection for capacitive touch screen

A method of foreign matter rejection for multi-touch capacitive touch screens includes performing touch detection in both self-capacitance mode and mutual capacitance mode. By combining information from both modes, a distinction is identified between wanted touches, such as by a finger or stylus, and unwanted touches such as by foreign matter.. ... Stmicroelectronics Asia Pacific Pte Ltd

01/11/18 / #20180011595

Systems and methods for water detection by touchscreen panels

A system and method for multi-touch integrity sensing for a multi-touch capacitive touch screen is disclosed. The system and method determines a distinction between wanted touches, such as via a finger or stylus, and unwanted touches such as via foreign matter, errors, and the like.. ... Stmicroelectronics Asia Pacific Pte Ltd

01/04/18 / #20180004349

Self-sensing touch panel

A method of differential self-capacitance measurement is used to enhance a signal-to-noise ratio of sense lines in a touch panel display, thereby improving touch sensor accuracy. The differential self-capacitance measurement is implemented for a touch panel using charge sharing between adjacent sense lines of the touch panel matrix. ... Stmicroelectronics Asia Pacific Pte Ltd

12/28/17 / #20170371442

Capacitive touch pressure sensor constructed from flexible substrate

An electronic device includes a flexible substrate. The flexible substrate includes a first portion having a plurality of first conductive lines formed thereon, a second portion having a plurality of second conductive lines formed thereon, and an intermediate portion mechanically coupling the first portion to the second portion. ... Stmicroelectronics Asia Pacific Pte Ltd

12/14/17 / #20170357371

Multi-touch integrity sensing for capacitive touch screen

A method for multi-touch integrity sensing for a multi-touch capacitive touch screen is disclosed. By determining the integrity of touches, a distinction is identified between wanted touches, such as via a finger or stylus, and unwanted touches such as via foreign matter, errors, and the like.. ... Stmicroelectronics Asia Pacific Pte Ltd

11/30/17 / #20170346470

Folded divider architecture

A circuit includes a counter circuit, a logic circuit, and a clock divider. The counter circuit includes a clock divider counter to be loaded with most significant bits of a divider value, and decremented at a same edge of each pulse of a clock signal. ... Stmicroelectronics Asia Pacific Pte Ltd

11/30/17 / #20170344158

Capacitive discharge circuit for touch sensitive screen

A capacitive discharge circuit includes a line having a capacitance, a switched capacitor circuit including a capacitor, a switched circuit coupled to the line, and a voltage regulator coupled between the switched capacitor circuit and the switched circuit. A controller operates the switched capacitor circuit and switched circuit to in a first phase, charge the capacitor by coupling the capacitor between a common mode and a power supply, and in a second phase, discharge the capacitor by coupling the voltage regulator in series with the capacitor between the power supply node a ground. ... Stmicroelectronics Asia Pacific Pte Ltd

10/12/17 / #20170293394

Dead zone compensation for touch screens

A method of compensated touch data values disclosed herein includes acquiring touch data values about a dead sensing zone of a touch screen, and determining a peak value of those touch data values. Then, a new peak value is calculated as a function of an average of the peak value and another value of the touch data value, and a sharpness value for the dead sensing zone is generated if a second highest value of the touch data values is less than the new peak value. ... Stmicroelectronics Asia Pacific Pte Ltd

09/21/17 / #20170269740

System and method of communication between a capacitive touch screen and an active stylus

An active stylus is capacitively coupled to a capacitive touch panel for communication. The active stylus operates in a wait mode to receive initial communications from the panel. ... Stmicroelectronics Asia Pacific Pte Ltd

08/31/17 / #20170249030

Force sensor patterns

The present disclosure provides a capacitive sensing structure for detecting a force touch in a touchscreen application. Performance uniformity of the force touch sensor is improved by providing a capacitive force touch structure having sensing electrodes of varying thickness, wherein the variation in electrode thickness corresponds to a relative displacement potential of portions of the sensing electrode. ... Stmicroelectronics Asia Pacific Pte Ltd

06/29/17 / #20170185182

Common mode noise reduction in capacitive touch sensing

The present disclosure is directed to a system and method to remove common mode noise projected onto a touch sensor array from a display. The system is configured to activate two rows of electrodes at the same time, while coupling remaining rows of electrodes to ground. ... Stmicroelectronics Asia Pacific Pte Ltd

06/22/17 / #20170177136

Support of narrow tip styluses on touch screen devices

An electronic device disclosed herein includes a touch screen controller to identify an island i.e., a matrix of acquired touch data values, the island including adjacent touch data values indicating a potential touch of a touch sensitive screen. A first sharpness of the island is calculated using a first normalization type and not a second normalization type. ... Stmicroelectronics Asia Pacific Pte Ltd

05/18/17 / #20170139501

Frequency hopping for a capacitive touch screen controller

A circuit includes a force driver configured to apply a force signal to a force node associated with a mutual capacitance to be sensed. A sensing circuit receives a sense signal from a sense node associated with said mutual capacitance to be sensed. ... Stmicroelectronics Asia Pacific Pte Ltd

05/11/17 / #20170131823

Suppression of display noise in touch screen controllers

An electronic device includes a touch screen controller. The touch screen controller is configured to asynchronously measure a capacitance between a sense line and a drive line of a sensing layer with respect to a horizontal sync signal of a display layer. ... Stmicroelectronics Asia Pacific Pte Ltd

04/13/17 / #20170103729

Enhanced tone mapper for high dynamic range images and video

Various embodiments provide tone mapping of images and video from one dynamic range to an available dynamic range of a display device while preserving or enhancing image details. According to one embodiment, an enhanced tone mapping module is configured to decrease a luminance of an image or video from a high dynamic range to a standard dynamic range. ... Stmicroelectronics Asia Pacific Pte Ltd

04/13/17 / #20170102758

Wake up gesture for low power using capacitive touch controller

A touch screen controller provides a host interrupt to a host device operating in a low power consumption mode. The touch screen controller uses gesture templates to detect gestures input via a touch screen. ... Stmicroelectronics Asia Pacific Pte Ltd

03/16/17 / #20170075469

Mutual hover protection for touchscreens

Disclosed is a touch sensor and method for detecting a touch in a capacitive touchscreen application, wherein the touch sensor is capable of distinguishing between a finger hovering above the touch sensor and a touch from a stylus having a small contact surface area without having to adjust the sensitivity of the touch sensor. The touch sensor includes a first sensing electrode, a transmit electrode, and a second sensing electrode, wherein the second sensing electrode is positioned substantially around the perimeter of the inner circuitry (i.e., transmit electrode and first sensing electrode). ... Stmicroelectronics Asia Pacific Pte Ltd

03/09/17 / #20170069298

Managing multiple systems in a computer device

Resources of multiple systems are managed in a computer device. A first processing system having a set of dedicated resources also has a resource manager to manage at least one of the resources. ... Stmicroelectronics Asia Pacific Pte Ltd

03/02/17 / #20170060293

Electronic device with touchscreen for removing sample subsets and related methods

An electronic device may include a touchscreen having sensing capacitors, and readout circuitry. The readout circuitry may be configured to accumulate a sample set from each sensing capacitor, divide the sample set into sample subsets, remove a given sample subset when the given sample subset exceeds a threshold, and process remaining sample subsets for touch input.. ... Stmicroelectronics Asia Pacific Pte Ltd

02/09/17 / #20170038883

Electronic device with valid single finger touch detection and related methods

An electronic device may include a touchscreen having an array of finger touch sensitive areas, and a controller coupled to the touchscreen. The controller is configured to read touch values from the array of finger touch sensitive areas, and determine when the read touch values define a valid single finger touch pattern having lower touch values within adjacent higher touch values, and, if so, treating the read touch values as being representative of a single finger touch, and, if not, causing a finger separation determination.. ... Stmicroelectronics Asia Pacific Pte Ltd

02/02/17 / #20170031493

Correcting coordinate jitter in touch screen displays due to forceful touches

An electronic device includes a processor that acquires touch data values corresponding to different locations of a touch display, and identifies an island in the touch data that has touch data values acquired from adjacent locations of the touch display that indicate a potential touch. A first area of the island is determined from touch data values that exceed a first threshold value, and a second area of the island is determined from touch data values that exceed a second threshold value. ... Stmicroelectronics Asia Pacific Pte Ltd

01/26/17 / #20170024033

Cross hatch ito sensor pattern for touchscreens

In one implementation, a capacitive sensing structure comprises rows of first sensors electrically coupled together and columns of second sensors electrically coupled together, wherein the first sensors include: a first arm extending in a first direction and having a first plurality of finger structures extending therefrom, a second arm extending in the first direction and having a second plurality of finger structures extending therefrom, and an end portion connecting the arms, wherein the first sensors define open regions that are occupied by the second sensors. In a second implementation, a capacitive sensing structure comprises rows of first sensors and columns of second sensors, wherein each of the first sensors includes an elongated portion having finger structures extending therefrom, and wherein each of the second sensors includes a primary portion connected to secondary portions via arms, wherein the secondary portions occupy gaps defined by the finger structures of the first sensors.. ... Stmicroelectronics Asia Pacific Pte Ltd








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