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Pixart Imaging Inc patents


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

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Eye state detecting method and eye state detecting system

An eye state detecting method, which comprises: (a) capturing a detecting image; (b) computing a brightness variation tendency for a peripheral part of a darkest part of the detecting image; and (c) determining whether a user's eye is in an opening state or in a closing state according to the brightness variation tendency. . ... Pixart Imaging Inc

Touch device and signal processing circuit as well as operating method thereof

A signal processing circuit of a touch device including an operational amplifier, a feedback resistor and a step current circuit is provided. The feedback resistor connects between a negative input and an output terminal of the operational amplifier. ... Pixart Imaging Inc

Array physiological detection system and device

A physiological detection system including an array sensor and a processing unit is provided. The array sensor is configured to output array ppg signals. ... Pixart Imaging Inc

Optical component packaging structure

The instant disclosure provides an optical component packaging structure which includes a far-infrared sensor chip, a first metal layer, a packaging housing and a covering member. The far-infrared sensor chip includes a semiconductor substrate and a semiconductor stack structure. ... Pixart Imaging Inc

Optical mouse and parameter calibration method thereof

This present invention discloses an optical mouse and a parameter calibration method thereof. The optical mouse includes: a light source, an image capturing unit, a memory unit and a processing unit, and the parameter calibration method of the optical mouse includes: capturing images formed by the reflective light projected from the mouse pad when the optical mouse is placed upon the mouse pad and has a relative displacement between the mouse pad, and then producing image frames according to the images; determining if any pattern information is found in the image frames; further, setting parameters of the optical mouse when at least one of the pattern information is found in the frames, in which, the pattern information is composed of a pattern of the mouse pad.. ... Pixart Imaging Inc

Heart rate detecting module and method

This instant disclosure provides a heart rate detecting module which includes an image sensor and a processor. The image sensor generates a plurality of image frames according to a light from a subject. ... Pixart Imaging Inc

Safety monitoring apparatus and method thereof for human-driven vehicle

A safety monitoring apparatus and method thereof for human-driven vehicle are provided. The safety monitoring apparatus includes a sensing unit, a processing unit, and a warning unit. ... Pixart Imaging Inc

Image sensor and sensing pixel array for reading out charge of sensing signal and charge of reset signal of one sensing pixel unit after another

A sensing pixel array used in an image sensor includes sensing pixel units each including a photodiode, a row reset transistor, a buffer transistor, and a column control transistor at least. Photodiode converts light into a sensing signal. ... Pixart Imaging Inc

Optical apparatus and light sensitive device with micro-lens

There is provided an optical apparatus including a substrate, a light emitting device, a light sensitive device and a plurality of micro-lenses. The light emitting device is disposed on the substrate and adapted to provide a light beam. ... Pixart Imaging Inc

Marker product and related optical detection system

An optical detection system includes a marker product and an optical encoding device. The marker product includes a substrate and at least one structural portion. ... Pixart Imaging Inc

Distance measurement device based on phase difference

A distance measurement device including a pixel array and a cover layer is provided. The cover layer is covered on the pixel array. ... Pixart Imaging Inc

Distance detecting mechanism and navigation device with distance detecting function

A navigation device with distance detecting function can utilize a distance detecting mechanism to detect a distance relative to a working surface. The distance detecting mechanism includes a base, a connecting component, a feature unit and a detection unit. ... Pixart Imaging Inc

Optical navigation mechanism capable of dynamically learning different materials of different working surfaces

A method for dynamically learning a material of a working surface on which an optical navigation device is moving, includes: using light emitting unit (s) to emit light ray (s) to the surface so as to generate image(s) on an image sensor; estimating and calculating average offset(s) of image(s) of sensing pixel(s) of the image sensor according to at least one image motion information sensed by the sensing pixel(s) during a specific time; and, dynamically determining whether the image value(s) sensed by the sensing pixel (s) correspond to a fixed pattern or correspond to a feature image of the device moving on the surface according to the average offset(s) and a threshold.. . ... Pixart Imaging Inc

Distance measuring method and apparatus

Disclosed are a distance measuring method and a distance measuring apparatus. During the distance measuring, an image is obtained. ... Pixart Imaging Inc

08/16/18 / #20180228442

Digital signal processing device and denoising method of heart rate detection module

A heart rate detection module including a ppg measuring device, a motion sensor and a processing unit is provided. The ppg measuring device is configured to detect a skin surface in a detection period to output a ppg signal. ... Pixart Imaging Inc

08/09/18 / #20180226531

Optoelectronic device having photodiodes for different wavelengths and process for making same

An optoelectronic device includes: a substrate made of a first material; a region in the substrate, the region being made of a second material different from the first material; an n-well in the region made of the second material; and a photo diode formed in the region by ion implantation. The second material for example is silicon germanium (si1-xgex) or silicon carbide (si1-ycy), wherein 0<x, y<1.. ... Pixart Imaging Inc

07/26/18 / #20180212620

Amending circuit of correcting bouncing misjudgment of a keyswitch

An amending circuit of correcting bouncing misjudgment of a keyswitch includes a comparing unit, a predetermined voltage generating unit and a controlling unit. The comparing unit has a first input terminal, a second input terminal and an output terminal. ... Pixart Imaging Inc

07/26/18 / #20180210196

Light sensing method, physiological parameter computing method and light sensing system

A light sensing method applied to a light sensing system comprising a first light sensor and at least one light source. The first light sensor comprises a plurality of light sensing units. ... Pixart Imaging Inc

07/19/18 / #20180203530

Dual mode optical navigation device and mode switching method thereof

There is provided a mode switching method of a dual mode optical navigation device. The dual mode optical navigation device is configured to be operated on a working surface and has a first bottom surface and a second bottom surface having an included angle with the first bottom surface. ... Pixart Imaging Inc

07/19/18 / #20180202864

Thermal pile sensing structure integrated with capacitor

The present invention discloses a thermal pile sensing structure integrated with one or more capacitors, which includes: a substrate, an infrared sensing unit and a partition structure. The infrared sensing unit includes a first and a second sensing structure. ... Pixart Imaging Inc

07/19/18 / #20180201499

Micro-electro-mechanical device having low thermal expansion difference

The invention provides a micro-electro-mechanical device which is manufactured by a cmos manufacturing process. The micro-electro-mechanical device includes a stationary unit, a movable unit, and a connecting member. ... Pixart Imaging Inc

07/05/18 / #20180190786

Semiconductor device and manufacturing method therefor

The present invention discloses a manufacturing method for a semiconductor device. The manufacturing method includes: providing a substrate; forming a semiconductor stacked structure on the substrate; forming at least apart of a stacked cap layer on the semiconductor stacked structure, wherein the part of the stacked cap layer includes a nitride layer; removing a part of the nitride layer; forming the rest part of the stacked cap layer; forming a protection layer on the stacked cap layer, and etching the protection layer to form an opening, wherein the nitride layer is not exposed by the opening; and introducing an etchant material into the opening to etch the substrate. ... Pixart Imaging Inc

06/28/18 / #20180182227

Wearable device and associated detecting method

A wearable device includes: a sensing circuit and a processing circuit, wherein the sensing circuit is arranged to generate a wearing information output in each of a plurality of detecting periods, and the processing circuit is arranged to inform a wearing status indicative of a status of wearing the wearable device according to wearing information outputs generated in the plurality of detecting periods.. . ... Pixart Imaging Inc

06/21/18 / #20180175793

Voltage-to-current circuit and voltage-controlled oscillator apparatus

A voltage-to-current circuit employs low leakage manufacturing process transistor(s) to connect at least one non-controlled terminal (e.g. Source, drain, or base of mosfet) and/or control terminal (e.g. ... Pixart Imaging Inc

06/21/18 / #20180173324

Led current ramping method for optical mouse

An led current ramping method for an optical mouse includes: determining a speed of the optical mouse; setting control bits according to the determined speed; sending the control bits to a digital circuit of the mouse; and decoding the control bits to selectively open and close switches in a constant current led driver of the mouse to adjust a current according to the speed.. . ... Pixart Imaging Inc

06/21/18 / #20180173269

Navigation system and mouse device

A clock calibration method of a navigation system is provided. The clock calibration method includes: entering a calibration mode; sequentially issuing, by a host, a count start signal and a count end signal separated by a time interval; counting a local oscillation frequency of a local oscillator when a navigation device receives the count start signal from the host; disabling the counting when the navigation device receives the count end signal from the host and generating a current count; generating a calibration signal according to the current count and a predetermined count corresponding to the time interval; and calibrating the local oscillation frequency of the local oscillator according to the calibration signal.. ... Pixart Imaging Inc

06/14/18 / #20180167714

Headset controller

A headset controller takes a first touch sensor, a second touch sensor, a first pressure sensor, and a second pressure sensor as a control medium for users. The headset controller can generate four different output instructions by the users touching or pressing the operating interface. ... Pixart Imaging Inc

06/14/18 / #20180164924

Capacitive touch device and capacitive communication device

There is provided a capacitive touch device including a touch panel, a detection circuit and a processing unit. The touch panel includes a plurality of drive electrodes and a plurality of receiving electrodes configured to form a coupling electric field with an external touch panel, and the receiving electrodes are respectively configured to output a detection signal. ... Pixart Imaging Inc

06/14/18 / #20180164898

Remote controller

There is provided an optical pointing system including at least one reference beacon, an image sensor, a storage unit and a processing unit. The image sensor is configured to capture an image frame containing a beacon image associated with the at least one reference beacon. ... Pixart Imaging Inc

06/07/18 / #20180160079

Pupil detection device

A pupil detection device includes an active light source, an image sensor and a processing unit. The active light source emits light toward an eyeball. ... Pixart Imaging Inc

06/07/18 / #20180158436

Method for syncing mouse report rate and screen refresh rate

A method for synchronizing a mouse report rate with a screen refresh rate of a computer includes: utilizing the computer to inform the mouse of a time period of each screen refresh; and adjusting the mouse report rate in accordance with the time period so that an equal integer number of frames will be reported in each screen refresh. Another method includes: determining a screen refresh rate of the computer; setting a target number of frames to be reported to the computer in each screen refresh period; scaling a motion report count of the mouse to generate a post-processed motion report count which corresponds to the target number of frames; and utilizing the post-processed motion report count to add or subtract frames to the number of frames reported during the mouse report period.. ... Pixart Imaging Inc

06/07/18 / #20180157346

Navigation device with adjustable sample period

There is provided a navigation device including an image sensor and a processing unit. The image sensor is configured to capture reflected light of a work surface with a low-speed period to generate image frames, wherein the image sensor captures a pair of image frames in each low-speed period. ... Pixart Imaging Inc

05/31/18 / #20180151308

Universal circuit board for mechanical keyswitch and optical keyswitch

A universal circuit board compatible for a mechanical keyswitch and an optical keyswitch includes a main body, a plurality of conductive terminals and an opening structure. The main body has a first surface and a second surface opposite to each other. ... Pixart Imaging Inc

05/31/18 / #20180150185

Optical touch device and operation method thereof

An operation method of an optical touch device includes: emitting, by a light emitting unit, a light beam to illuminate an object; capturing, by an image sensing device, an image of the object reflecting the light beam; selecting all pixels in the image having a brightness greater than or equal to a brightness threshold; sorting the selected pixels along a first coordinate axis of the image, a second coordinate axis of the image or based a pixel brightness; selecting the top first predetermined ratio of pixels from the sorted pixels as an object image of the object; and calculating a gravity center of the object image according to positions of the top first predetermined ratio of pixels or according to the positions of the top first predetermined ratio of pixels with a weight of pixel brightness. An optical touch device is also provided.. ... Pixart Imaging Inc

05/17/18 / #20180137997

Keyswitch and keyboard capable of showing movement depth

A keyboard has a keyswitch capable of showing its movement depth. The keyswitch includes a substrate, a lifting unit, a multistage positioning component and a keycap. ... Pixart Imaging Inc

05/17/18 / #20180137643

Object detection method and system based on machine learning

The present disclosure discloses an object detection method based on machine learning. The object detection method senses a motion of an object by a motion sensor to generate a testing image, captures the testing image by an image sensor to transmit a sensed image to an object detection device, and detects a position of the object in the sensed image by the object detection device. ... Pixart Imaging Inc

05/17/18 / #20180136741

Method and apparatus for adjusting optical setting of optical input device and related optical input device

A method of adjusting an optical setting of an optical input device includes: determining a desired level of an intensity of captured reflected light reflected from a tracking surface; determining whether a surface changing event occurs; and adjusting an optical setting of the optical input device according to the desired level of the intensity of the captured reflected light if it is determined the surface changing event occurs.. . ... Pixart Imaging Inc

05/17/18 / #20180136740

Ambient light sensing device and method, and interactive device using same

The invention provides an ambient light sensing device which receives at least one visible light image sensed by an image sensor. The ambient light sensing device includes an image sampling unit and an analyzing unit. ... Pixart Imaging Inc

05/17/18 / #20180136739

Method and apparatus for use in configuring optical input device and related optical input system

A method for configuring an optical input device is provided. The optical input device includes a movable unit and a sensing device. ... Pixart Imaging Inc

05/10/18 / #20180129875

Gesture identification with natural images

A method for gesture identification with natural images includes generating a series of variant images by using each two or more successive ones of the natural images, extracting an image feature from each of the variant images, and comparing the varying pattern of the image feature with a gesture definition to identify a gesture. The method is inherently insensitive to indistinctness of images, and supports the motion estimation in axes x, y, and z without requiring the detected object to maintain a fixed gesture.. ... Pixart Imaging Inc

05/03/18 / #20180124344

Image sensor

There is provided an operating method of an image sensor including: storing a first charge from an optoelectronic circuit to a pixel buffer circuit within a first exposure period; storing a second charge from the optoelectronic circuit to the pixel buffer circuit within a second exposure period; transferring the first charge from the pixel buffer circuit to a first storage circuit outside of pixel circuits; transferring the second charge from the pixel buffer circuit to a second storage circuit outside of pixel circuits; and comparing the first charge with the second charge to output an analog image signal.. . ... Pixart Imaging Inc

05/03/18 / #20180122960

Optical component packaging structure

The instant disclosure provides an optical component packaging structure which includes a far-infrared sensor chip, a first metal layer, a packaging housing and a covering member. The far-infrared sensor chip includes a semiconductor substrate and a semiconductor stack structure. ... Pixart Imaging Inc

05/03/18 / #20180120949

Interactive system and glasses with gesture recognition function

Glasses with gesture recognition function include a glasses frame and a gesture recognition system. The gesture recognition system is disposed on the glasses frame and configured to detect hand gestures in front of the glasses thereby generating a control command. ... Pixart Imaging Inc

05/03/18 / #20180116506

Eye tracking apparatus and image capture module thereof

An eye tracking apparatus and an image capture module thereof for capturing an iris image are provided. The image capture module includes a carrier, a light source and an image sensing unit. ... Pixart Imaging Inc

04/19/18 / #20180107334

Capacitive touch device, and controlling and processing circuit thereof

There is provided a capacitive touch device including a controlling and processing circuit and a touch panel. The touch panel has a plurality of detection cells arranged in matrix. ... Pixart Imaging Inc

04/19/18 / #20180105048

Charging system and charging method

A charging system, comprising: a charging apparatus; and at least one guiding apparatus, comprising at least one light emitting device provided in at least one target apparatus. The charging apparatus moves to a charging location according a light emitting state of the light emitting device, to charge the target apparatus.. ... Pixart Imaging Inc

04/12/18 / #20180103224

Analog-to-digital signal processing method and apparatus for image sensor

An analog-to-digital signal processing method applied for an image sensor includes: providing a global analog-to-digital converter (adc) capable of converting analog signals of all pixels of a pixel array into digital signals; providing a column-parallel adc capable of respectively converting a plurality of analog signals of a plurality of pixels on different columns of the pixel array into a plurality of digital signals by using a plurality of adc circuits; and, dynamically selecting and switching to enable one of the global adc and column-parallel adc to perform analog-to-digital conversion for analog data/signals of pixels on the pixel array.. . ... Pixart Imaging Inc

04/05/18 / #20180092604

Heart rate detection architecture

There is provided a system architecture including a ppg hardware module and a mems hardware module. The ppg hardware module processes ppg raw data, which is generally composed of analog signals or digital signals. ... Pixart Imaging Inc

03/29/18 / #20180087958

Optical module package structure and method thereof

The present disclosure discloses an optical module package structure and method thereof. The optical module includes a substrate, a shield, a photosensitive unit and a cover. ... Pixart Imaging Inc

03/22/18 / #20180084207

Image sensing circuit and method capable of obtaining higher image brightness dynamic range

An image sensing circuit includes floating node, switch circuit, capacitor(s), and counting circuit. The floating node receives image electric charge from a photosensitive pixel. ... Pixart Imaging Inc

03/22/18 / #20180084190

Electronic system with eye protection

An electronic system including a display device, an image sensor, a face detection engine, an eye detection engine and an eye protection engine is provided. The image sensor captures an image. ... Pixart Imaging Inc

03/22/18 / #20180081459

Gesture detection device for detecting hovering and click

There is provided a gesture detection device including two linear image sensor arrays and a processing unit. The processing unit is configured to compare sizes of pointer images in the image frames captured by the two linear image sensor arrays in the same period or different periods so as to identify a click event.. ... Pixart Imaging Inc

03/15/18 / #20180075621

Detection system and picture filtering method thereof

A detection system including a light source, an image sensor and a processor is provided. The light source is configured to illuminate an object. ... Pixart Imaging Inc

03/15/18 / #20180074695

Pin sharing circuit, pin sharing method, electronic device and electronic wire using the same

Provided herein are a pin sharing circuit, a pin sharing method and an electronic device, an electronic wire using the same. The pin sharing circuit enables at least one pin on an integrated circuit to be shared by a keyboard device and a touch panel and prevents signal interference between the keyboard device and the touch panel using an impedance element disposed on a wire for the pin, such that the pin can output or receive a stimulation signal and a sensor signal that contain both an ac component and a dc component so as to enhance the efficiency of the overall system and prevent the stimulation signal and the sensor signal from conflicts between the keyboard device and the touch panel.. ... Pixart Imaging Inc

03/15/18 / #20180074101

Capacitive pressure sensing circuit and capacitance-to-voltage converter thereof

Disclosed is a capacitive pressure sensing circuit and a capacitance-to-voltage converter thereof. The pressure sensing circuit comprises a converter, a cancellation circuit and a signal processor. ... Pixart Imaging Inc

03/08/18 / #20180067459

Electronic device

An electronic device includes a case, a manipulation ring disposed on the case, a rotational unit, a waterproof member, and an optical tracking system (ots) sensor. The case has a first chamber and a second chamber arranged outside the first chamber. ... Pixart Imaging Inc

03/01/18 / #20180063604

Signal sending device, signal receiving device, and signal sending and receiving system and method

A signal sending device, a signal receiving device, and a signal sending and receiving system and method are presented. The devices and system combine a plurality of sense data into a data packet to transmit the data packet. ... Pixart Imaging Inc

03/01/18 / #20180062630

Voltage comparing circuit and voltage comparing method

A voltage comparing circuit comprising: a comparator,; a time interval computing unit; a switch module,; a first current source, comprising a first charging terminal; a first capacitor, coupled to the first current source at the first charging terminal; and a capacitance adjusting unit, coupled to the first capacitor. In a first calibration mode, the first comparing terminal receives a reference voltage.. ... Pixart Imaging Inc

03/01/18 / #20180061060

Edge detection with shutter adaption

A method for determining leading edge location in an image captured by an optical navigation sensor with auto shutter adaptation includes: plotting average pixel values per sensor column on a graph; determining an average value according to the average pixel values as a threshold value; defining a weighted location in the leading half of the captured image according to the threshold value; and determining the leading edge location according to the defined weighted location.. . ... Pixart Imaging Inc

03/01/18 / #20180060687

Image recognition method and system based on deep learning

The present disclosure discloses an image recognition method and system based on deep learning. The image recognition method trains a recognizing engine for high resolution images and a recognizing engine for low resolution image separately. ... Pixart Imaging Inc

03/01/18 / #20180059807

Image processing method capable of detecting noise and related navigation device

An image processing method capable of detecting noise includes adjusting a lighting unit to acquire an over-exposure image, comparing each pixel of the over-exposure image with at least one threshold value, labeling a pixel of the over-exposure image as the noise while bright intensity of the pixel is lower than the threshold value, calculating a simulating value according to bright intensity of pixels around the noise and except the noise, and utilizing the simulating value and bright intensity of other pixels except the noise to execute a displacement detecting calculation.. . ... Pixart Imaging Inc

03/01/18 / #20180058936

Far infrared sensor apparatus having multiple sensing element arrays inside single package

A far infrared sensor package includes a package body and a plurality of far infrared sensor array integrated circuits. The plurality of far infrared sensor array integrated circuits are disposed on a same plane and inside the package body. ... Pixart Imaging Inc

02/22/18 / #20180052015

Optical detecting device capable of determining shift of a multi-axis instruction outputting mechanism

An optical detecting device includes a multi-axis instruction outputting mechanism and an optical detecting module, and shift of the multi-axis instruction outputting mechanism is determined accordingly. An actuating component of the multi-axis instruction outputting mechanism is moved in reciprocation at a first operating direction to output an instruction. ... Pixart Imaging Inc

02/22/18 / #20180051979

Optical detecting device capable of determining relative position of a reference object or a light source

An optical detecting device is utilized to determine a relative position of a reference object or a light source according to an optical reflecting signal reflected from the reference object via an optical detecting signal emitted by the light source. The optical detecting device includes a light penetrating component, at least one light tight structure and an optical detecting component. ... Pixart Imaging Inc

02/22/18 / #20180049702

Semi-penetrating type optical detection apparatuses and method for physiological characteristic(s)

An optical detection method for detecting physiological characteristic(s), includes: providing at least one light emitting unit; disposing the light emitting unit on a first plane to emit light to a skin surface position of a human body part to be detected of a user; providing at least one optical sensing circuit; disposing the optical sensing circuit on a second plane to receive a sensing result of photoplethysmography (ppg) signal from another skin surface position of the human body part to be detected; and generating a physiological characteristic(s) detection result according to the sensing result; the first plane is different and distinct from the second plane, and a substantial angle is formed between the two plans.. . ... Pixart Imaging Inc

02/01/18 / #20180032206

Touch device with adjustable grid distance

There is provided a touch display device including a display and a touch control device. The display includes a glass substrate. ... Pixart Imaging Inc

02/01/18 / #20180032151

Cursor controller and two-dimensional navigation module thereof

A two-dimensional navigation module of a cursor controller includes a top plate, a first rod, a sliding roller sleeved at the first rod, and a first ots sensor. The top plate has an elongated groove recessed thereon. ... Pixart Imaging Inc

01/25/18 / #20180025497

Speed detecting method and speed detecting apparatus

A speed detecting apparatus comprising: an image capturing apparatus, configured to capture at least one object to be detected image for an object to be detected; and a speed computing apparatus, configured to compute a moving speed for the object to be detected according to an after image length for an after image in the object to be detected image.. . ... Pixart Imaging Inc

01/25/18 / #20180025143

Individualized control system utilizing biometric characteristic

A control system including a detection device and a control host is provided. The detection device is configured to detect a biometric characteristic to accordingly identify a user id, and output an id signal according to the user id. ... Pixart Imaging Inc

01/25/18 / #20180024655

Light sensor

A control system, a mouse and a control method thereof are provided. The control system comprises a dongle and the mouse. ... Pixart Imaging Inc

01/25/18 / #20180024221

Scheme capable of calibrating value of sampling precision of optical sensor for tracking

A method for calibrating a value of sampling precision of an optical sensor for tracking includes: reading a precision variance and a setting precision value from a memory device; measuring the sampling precision of the optical sensor under a normal mode to generate an actually measured precision value; calculating a normalized value that is proportional to the actually measured precision value according to the precision variance, the actually measured precision value, and the setting precision value; and, calibrating the actually measured precision value by using the normalized value.. . ... Pixart Imaging Inc

01/11/18 / #20180014266

Wireless transceiver apparatus and method capable of controlling gain(s) of amplifier(s) by detecting power of interference signal in the air with considerations of power saving and smaller circuit area

A wireless transceiver apparatus includes a power detector, an analog signal receiving circuit at wireless signal reception side, and a processing circuit. The power detector is configured at wireless signal transmission side and used for detecting power of a power amplifier on a transmitting path of wireless signal transmission side. ... Pixart Imaging Inc

01/04/18 / #20180006647

Capacitive switch having high accuracy

A capacitive switch includes a drive circuit, a detection circuit, a reference circuit and an identification unit. The drive circuit outputs a drive signal and a switching signal, wherein the drive signal is outputted to a first node and a second node. ... Pixart Imaging Inc

01/04/18 / #20180005382

Image recognition system, sensor module, and method for image recognition

An image recognition system includes a processing module, a sensor module, and a database. The sensor module is electrically connected to the processing module. ... Pixart Imaging Inc

12/28/17 / #20170373719

Bluetooth pairing method

There is provided a capacitive communication system including an object and a capacitive touch panel. The object includes a plurality of induction conductors configured to have different potential distributions at different time intervals by modulating respective potentials thereof. ... Pixart Imaging Inc

12/28/17 / #20170371425

Handheld device and positioning method thereof

A positioning method and a handheld device for performing the method are disclosed. In the method, a handheld device captures images corresponding to positions of a reference when the handheld device points toward the reference. ... Pixart Imaging Inc

12/21/17 / #20170365062

Method and pixel array for detecting motion information

A method for detecting motion information includes the following steps. First, a pixel array is provided for detecting an image of a measured object located in a first distance range or in a second distance range, and the pixel array includes a plurality of invisible image sensing pixels and a plurality of visible image sensing pixels. ... Pixart Imaging Inc

12/21/17 / #20170364161

Input device with key input and touch input, and operating method thereof

An input device including a plurality of press buttons and a touch control area is provided. The press buttons provide a key input function, and the touch control area provides a touch input function. ... Pixart Imaging Inc

12/21/17 / #20170363723

Optical calibration system adapted for optical distance measurement system

An optical calibration system including a calibration module, a light source, an optical sensing device and a calculation module is provided. The calibration module includes a calibration plane and a plurality of calibration structures between the calibration plane and the light source, wherein the calibration structures are disposed at predetermined calibration positions. ... Pixart Imaging Inc

12/14/17 / #20170356798

Pixel transfer rate boosting device

A device, for pixel transfer rate boosting, is provided and includes an image sensing array having a plurality of pixel units, in which each of the plurality of pixel units is configured to generate a pixel signal when receiving an electromagnetic energy, a signal buffer circuit, electrically coupled with the image sensing array to receive the pixel signals, a switch circuit electrically coupled with the signal buffer circuit, a capacitor having a first terminal and a second terminal, in which the first terminal electrically couples with the switch circuit and the second terminal connects to a ground, a comparator, electrically coupled with the switch circuit, and a pull-down unit, electrically coupled with the first terminal of the capacitor and the switch circuit. After the switch circuit is turned on, the pull-down unit pulls the plurality of pixel output signals down.. ... Pixart Imaging Inc

12/07/17 / #20170353699

Surveillance system and operation method thereof

The disclosure is related to a surveillance system and an operation method thereof. The surveillance system includes an auxiliary sensor module that is in full-time operation, and a main sensor module that is in a power-saving mode at a normal state. ... Pixart Imaging Inc

12/07/17 / #20170351908

Portable electronic device and operation method thereof

Disclosed are a portable electronic device and an operation method thereof. The built-in image sensor of the portable electronic device continually captures a first image, detects whether there is a face image information in the first image, and accordingly determines whether to turn on a camera of the portable electronic device to capture a second image having a higher resolution. ... Pixart Imaging Inc

12/07/17 / #20170351899

Vehicle safety system and operating method thereof

There is provided a vehicle safety system including a sensing unit, a processing unit, a control unit and a display unit. The sensing unit is configured to capture an image frame containing an eyeball image from a predetermined distance. ... Pixart Imaging Inc

12/07/17 / #20170350691

Measurement device and operation method thereof

Provided herein are a measurement device and an operation method thereof. The measurement device senses a distance variation between the measurement device and an object using a built-in proximity sensor and accordingly determines whether to turn on or turn off a track sensing module and an optical ranging module such that the measurement device provides intelligent selection to achieve energy saving without being interfered with by other sensors being turned on.. ... Pixart Imaging Inc

11/30/17 / #20170346529

Capacitive touch device and mouse for near field communication

There is provided a capacitive communication system including an object and a capacitive touch panel. The object includes a plurality of induction conductors configured to have different potential distributions at different time intervals by modulating respective potentials thereof. ... Pixart Imaging Inc

11/16/17 / #20170330910

Color filter array and image sensing device using the same

A color filter array and an image sensing device are disclosed. The color filter array includes a plurality of color cells arranged into a matrix. ... Pixart Imaging Inc

11/16/17 / #20170329418

Optical pointing system

There is provided an optical pointing system including at least one reference beacon, an image sensor, a storage unit and a processing unit. The image sensor is configured to capture an image frame containing a beacon image associated with the at least one reference beacon. ... Pixart Imaging Inc

11/16/17 / #20170326725

Remote control system for pointing robot

There is provided a remote control system including a controlled device and a remote device. The controlled device has a light source and moves according to a control signal from the remote device. ... Pixart Imaging Inc

11/09/17 / #20170324919

High accuracy displacement detection system with offset pixel array

A pixel array system for high accuracy detection of displacement, speed and acceleration includes: an array comprising m columns and n rows, wherein at least every other row is offset with respect to a preceding row of the array. In a first embodiment, every other row is offset with respect to a preceding row of the array by 25% of a pixel width. ... Pixart Imaging Inc

11/09/17 / #20170322675

Touch control detecting method and touch control detecting system

A touch control detecting method applied to an electronic apparatus comprising an image sensor. The touch control detecting method comprises: (a) capturing a plurality of sensing images via the image sensor; and (b) determining if an object performs a predetermined touch control operation to the electronic apparatus, according to a brightness variation tendency of the sensing images.. ... Pixart Imaging Inc

11/09/17 / #20170322073

Optical detecting device having gas emission and gas pressure reduction function

An optical detecting device has gas emission and pressure reduction function and includes a holder, a light penetrating component, a light detecting component, a hole structure, and a. The light penetrating component is disposed on the holder to form an accommodating space whereinside the light detecting component is disposed. ... Pixart Imaging Inc

10/26/17 / #20170309771

Optical sensor module and sensor chip thereof

An optical sensor module and a sensor chip thereof are provided. The optical sensor module includes a substrate, a sensor chip and a passive chip. ... Pixart Imaging Inc

10/26/17 / #20170308191

Interactive system and method thereof for controlling multiple remote devices

Provided herein are an interactive system and a method thereof for controlling multiple remote devices. The method is executed by a portable navigation device to establish an interactive system including the portable navigation device, a host device and at least one controlled device. ... Pixart Imaging Inc

10/12/17 / #20170292888

Pressure measuring method and pressure measuring apparatus

A pressure measuring method, applied to a pressure measuring apparatus, comprising: measuring a first pressure sensing value of the pressure measuring apparatus, which corresponds to a first pressure in a test mode; measuring a second pressure sensing value of the pressure measuring apparatus, which corresponds to a second pressure in the test mode; generating a first corresponding function according to the first pressure, the second pressure, the first pressure sensing value and the second pressure sensing value; sensing a third pressure sensing value via the pressure measuring apparatus in a normal mode; and generating a third pressure according to the third pressure sensing value via the first corresponding function; wherein the pressure measuring apparatus operates at a first scan frequency. By this way, the pressure sensing value can be calibrated, to solve the issue that the pressure sensing values are affected by scan frequencies.. ... Pixart Imaging Inc

10/12/17 / #20170291094

Apparatus having gesture sensor

An apparatus having a gesture sensor is provided. The gesture sensor includes an image sensing unit and a processing unit. ... Pixart Imaging Inc

09/28/17 / #20170277285

Pen-typed navigation device and related navigation module

A pen-typed navigation device includes a housing, a pen tip, a pressure detecting unit, and a navigation module having an optical large depth of field detecting unit and a processing unit. The pen tip is disposed on the housing. ... Pixart Imaging Inc

09/28/17 / #20170277278

Circuit and method for detecting working and resting states for optical mouse

Disclosed is a circuit for detecting working and resting states for an optical mouse. During each frame capture, a counting unit of the digital logic circuit outputs a first counting signal to turn on a switching transistor, such that the voltage of the pixel capacitor varies from its predetermined voltage, and the counting unit starts to count. ... Pixart Imaging Inc

09/21/17 / #20170271976

Surge current compensating circuit and comparator module

A surge current compensating circuit has a compensating current generation unit, a bias unit, and a switch unit, for compensating a surge current drawn from a supply power after an output signal of a specific circuit transits. The compensating current generation unit is electrically coupled to the output stage of the specific circuit. ... Pixart Imaging Inc

09/14/17 / #20170263015

Optical encoder capable of identifying absolute positions and operating method thereof

The present disclosure is related to an optical encoder which is configured to provide precise coding reference data by feature recognition technology. To apply the present disclosure, it is not necessary to provide particular dense patterns on a working surface. ... Pixart Imaging Inc

09/14/17 / #20170262092

Capacitive touch system using frequency division multiplexing and operating method thereof

A capacitive touch system including a drive end, a capacitive touch sensing device and a detection end is provided. The drive end inputs a modulated drive signal into an input channel of the capacitive sensing device, wherein the modulated drive signal includes a plurality of driving frequencies. ... Pixart Imaging Inc

09/07/17 / #20170255333

Touch positioning method for touch panel

An object positioning method for touch panel is disclosed. In the method, an amount of sensing of a sensing signal can be detected and a sensing coordinate of an object can be obtained based on the detection. ... Pixart Imaging Inc

09/07/17 / #20170254699

Electronic device with waterproof structure

An electronic device with waterproof structure includes an assembly and a manipulation member movably disposed on an outer surface of the assembly. The assembly includes a case and an optical detection module. ... Pixart Imaging Inc

08/31/17 / #20170249027

Dual mode optical navigation device and mode switching method thereof

There is provided a mode switching method of a dual mode optical navigation device. The dual mode optical navigation device is configured to be operated on a working surface and has a first bottom surface and a second bottom surface having an included angle with the first bottom surface. ... Pixart Imaging Inc

08/24/17 / #20170244409

Keyswitch and keyboard with distance detecting function

A keyboard with a distance detecting function includes a plurality of keyswitches, and each keyswitch includes a keycap, a base, a supporting component, a recovering component and a distance detecting unit. The base has a guide slot structure. ... Pixart Imaging Inc

08/24/17 / #20170243358

Detection system

The present disclosure provides a detection system, which includes an image sensor, a lens device, and a processor. The image sensor is configured to take a first picture of a foreground object and a background object. ... Pixart Imaging Inc

08/24/17 / #20170238800

Method of identifying iris

A method of identifying iris is provided. The method includes providing a plurality of incident lights entering an eye located at a reference position; setting a first, second and third reference points; forming a first, second and third measuring glint by the incident lights after the eye moves to a measuring position; capturing an eye image of the eye including a first, second and third measuring glint images and an iris image; analyzing a gray scale value of the eye image to obtain the positions of the first, second and third measuring glints; and calculating a variation of the distance between the first measuring glint and the second measuring glint, a variation of the distance between the second measuring glint and the third measuring glint to obtain an resolution variation of the iris image when the eye is located at the measuring position.. ... Pixart Imaging Inc

08/17/17 / #20170236441

Interactive service platform and operating method thereof

An operating method of an interactive service platform including the steps of: communicating with a plurality of user end devices via an application software; receiving physiological measurement information of user from the user end devices via the application software; analyzing the physiological measurement information to identify a physical and mental state/lifestyle of an associated subscriber; and automatically responding content information associated with at least one associated subscriber according to requests from the user end devices.. . ... Pixart Imaging Inc

08/17/17 / #20170235370

Three-dimensional gesture sensing method and touch sensing device using the same

Disclosed is a three-dimensional gesture sensing method. The three-dimensional gesture sensing method comprises the following steps. ... Pixart Imaging Inc

08/10/17 / #20170228059

Capacitive touch system using differential sensing and operating method thereof

A capacitive touch system including a drive end, a capacitive sensing matrix and a detection end is provided. The drive end concurrently inputs encoded and modulated drive signals into a plurality of channels of the capacitive sensing matrix within each drive time slot of a frame. ... Pixart Imaging Inc

08/10/17 / #20170225944

Mems acoustic pressure sensor device and method for making same

The present invention discloses a micro-electro-mechanical system (mems) acoustic pressure sensor device and a method for making same. The mems device includes: a substrate; a fixed electrode provided on the substrate; and a multilayer structure, which includes multiple metal layers and multiple metal plugs, wherein the multiple metal layers are connected by the multiple metal plugs. ... Pixart Imaging Inc

08/10/17 / #20170225038

Treadmill and control method for controlling the treadmill belt thereof

A treadmill and a control method for controlling the treadmill belt thereof are provided. The treadmill includes a treadmill belt, a first sensor, an image sensor, and a controller. ... Pixart Imaging Inc

08/03/17 / #20170223287

Image sensing circuit and method capable of obtaining higher image brightness dynamic range

An image sensing circuit includes floating node, switch circuit, capacitor(s), and counting circuit. The floating node receives image electric charge from a photosensitive pixel. ... Pixart Imaging Inc

08/03/17 / #20170217016

Remote control system for pointing robot

There is provided a remote control system including a controlled device and a remote device. The controlled device has a light source and moves according to a control signal from the remote device. ... Pixart Imaging Inc

08/03/17 / #20170215680

Automatic clean machine control method and automatic clean machine

Disclosed is a computer readable recording media recording at least one program. An automatic clean machine control method applied to an automatic clean machine can be performed while the program is executed. ... Pixart Imaging Inc

07/27/17 / #20170212578

Self-powered optical mouse device and operating method thereof

An optical mouse device includes a light source, an image sensor array, an energy storage element, a frame buffer and a processor, wherein the image sensor array includes a plurality of sensing pixels and a plurality of self-powered pixels. In a first mode, the sensing pixels output image data to the frame buffer, and the self-powered pixels output photocurrent to the energy storage element. ... Pixart Imaging Inc

07/20/17 / #20170205901

Optical encoder, crown assembly and wearable device with crown assembly

An optical encoder has a displacement generating unit, a light-emitting unit and an optical navigation integrated circuit. The displacement generating unit has an axle body movable along a central axial line thereof. ... Pixart Imaging Inc

07/13/17 / #20170196469

Optical blood pressure detection device and operating method thereof

A blood pressure detection method includes the steps of: acquiring a ppg signal from a skin surface using a light sensing element; calculating a blood pressure corresponding to each pulse duration according to at least one pressure estimation model and a time difference between two feature points within one pulse duration; calculating a breathing period; averaging a plurality of blood pressures within the breathing period to generate an average blood pressure; and showing the average blood pressure with a display device.. . ... Pixart Imaging Inc

07/06/17 / #20170195593

Image sensor and image capture device using the same

The present disclosure illustrates an image sensor. The image sensor includes an image sensing array and a voltage supply array. ... Pixart Imaging Inc

06/29/17 / #20170184446

Proximity sensing device and light guiding method thereof

A proximity sensing device includes: a light source, a sensing unit, a light guide unit, and a window. The light source emits light, which is guided by the light guide unit to the window. ... Pixart Imaging Inc

06/29/17 / #20170184424

Optical navigation device

An optical navigation device has a light-emitting unit, an optical navigation chip and a cover. The light-emitting unit provides a light to a surface of a displacement generating unit. ... Pixart Imaging Inc

06/22/17 / #20170177510

Electronic system and non- transitory computer readable recording medium can perform report rate setting method

An electronic system that can automatically set a report rate, which comprises: a first electronic apparatus; a second electronic apparatus; a transmitting interface, wherein the second electronic apparatus transmits data to the first electronic apparatus via the transmitting interface; and a processing unit, for automatically setting a report rate of the second electronic apparatus or the transmitting interface according to a type of a software program that the first electronic apparatus executes. The type of the software program can be replaced by other factors.. ... Pixart Imaging Inc

06/15/17 / #20170168591

Electronic apparatus having optical navigation circuit

An electronic apparatus includes a structure and an optical navigation circuit. A first end of the structure is located inside the electronic apparatus and its second end corresponds to a user's control. ... Pixart Imaging Inc

06/15/17 / #20170167914

Optical sensing module with multi-directional optical sensing function

An optical sensing module capable of providing a multi-directional optical sensing function teaches that the optical sensing module can be fixed on a circuit board via a bridging medium. The optical sensing module includes a supporter, a photosensitive component and a connecting component. ... Pixart Imaging Inc

06/15/17 / #20170167898

Scheme for interrupt-based motion reporting

A method for reporting motion information from an electronic device to a remote host device includes: using an optical sensor for sensing the motion information of the electronic device, the optical sensor being configured within the electronic device; and reporting a motion result of the electronic device to the remote host device based on the optical sensor when the electronic device has moved a predetermined distance each time.. . ... Pixart Imaging Inc

06/01/17 / #20170150919

Breath detection device and operating method thereof

A breath detection method includes the steps of: receiving a ppg signal; recognizing a low frequency carrier of the ppg signal; recognizing a rising part of the low frequency carrier and a falling part of the low frequency carrier, wherein a frequency of the low frequency carrier represents a breathing cycle period of a user, the rising part represents one of a breathing out state and a breathing in state of the user, and the falling part represents the other one of the breathing out state and the breathing in state; and real-timely outputting at least one of the breathing cycle period, the breathing out state or the breathing in state.. . ... Pixart Imaging Inc

05/18/17 / #20170142352

Pixel circuit with low power consumption, image system including the same and operating method thereof

A pixel circuit including a photodiode, a first storage capacitor and a second storage capacitor is provided. The first storage capacitor discharges to a first output voltage in a first exposure time and to a third output voltage in a third exposure time. ... Pixart Imaging Inc

05/18/17 / #20170139536

Fdm based capacitive touch system and operating method thereof

A capacitive touch system including a capacitive touch panel, a storage element and a control chip is provided. The storage element is configured to store a lookup table which contains a plurality of mixing signals. ... Pixart Imaging Inc

05/18/17 / #20170139489

Optical processing apparatus and light source luminance adjustment method thereof

An optical processing apparatus and a light source luminance adjustment method adapted to detect a rotational displacement and a pressing state are provided. The optical processing apparatus includes a light source unit, a processing unit, and an image sensing unit, wherein the processing unit is electrically connected to the light source unit and the image sensing unit. ... Pixart Imaging Inc

05/18/17 / #20170138795

Thermal pile sensing structure integrated with capacitor

The present invention discloses a thermal pile sensing structure integrated with one or more capacitors, which includes: a substrate, an infrared sensing unit and a partition structure. The infrared sensing unit includes a first and a second sensing structure. ... Pixart Imaging Inc

05/11/17 / #20170133422

Apparatus and sensor chip component attaching method

An apparatus includes a lens component and an integrated circuit package. The lens component has a lens and a through hole from a specific surface to a bottom surface of the lens component. ... Pixart Imaging Inc

05/11/17 / #20170133290

Package structure

The invention provides a package structure which includes a substrate, at least one chip module, and a housing. The at least one chip module is located on the substrate. ... Pixart Imaging Inc

05/11/17 / #20170131800

Optical navigation apparatus with defocused image compensation function and compensation circuit thereof

The present disclosure illustrates an optical navigation apparatus with defocused image compensation function and a compensation circuit thereof the optical navigation apparatus comprises a light source, an image sensing circuit and a compensation circuit. The light source is configured to illuminate a work surface. ... Pixart Imaging Inc

05/11/17 / #20170131799

Non transitory computer readable recording medium for executing image processing method, and image sensing device applying the image processing method

A non-transitory computer-readable medium storing a program causing a computer to execute an image processing method applied to an image sensing device. The image processing method comprises: (a) comparing a frame delta between a reference frame and a first frame with a predetermined threshold value to generate a first comparing result; (b) comparing a frame rate of the image sensing device with a minimum frame rate and/or a maximum frame rate, to generate a second comparing result; and (c) adjusting one of the frame rate and an offset for a correlation window of the image sensing device, according to the first comparing result and the second comparing result.. ... Pixart Imaging Inc

05/04/17 / #20170124721

Optical sensor for odometry tracking to determine trajectory of a wheel

An optical sensor system for determining trajectory of a wheel includes: a wheel mounted in a wheel arch having an outer surface covered with evenly-spaced wheel treads; an optical sensor mounted in the wheel arch but not touching the wheel, for performing a plurality of counts corresponding to respectively capturing a plurality of images of the wheel according to the wheel treads, and comparing the captured images with a reference image to determine a 2d displacement. The optical sensor further performs a calculation to convert the measured 2d displacement of the wheel from its original position into a distance the wheel travels along a path in order to determine the wheel trajectory.. ... Pixart Imaging Inc

05/04/17 / #20170123511

System and method for eliminating spurious motion of mouse

A method for minimizing spurious motion of a mouse includes: determining whether the mouse enters a specific mode; and when the mouse is determined to enter the specific mode, generating a large correlation matrix by generating a standard size correlation matrix multiple times. The multiple standard size correlation matrices are offset with respect to each other so that an edge of each standard size correlation matrix touches at least an edge of another standard size correlation matrix to form the large correlation matrix. ... Pixart Imaging Inc

04/27/17 / #20170118418

Dual-aperture ranging system

A ranging system including a first aperture stop, a second aperture stop, an image sensor and a processing unit is provided. The first aperture stop includes a sheet of ir-cut filter material. ... Pixart Imaging Inc

04/27/17 / #20170118389

Image determining method and image sensing apparatus applying the image determining method

An image determining method, applied to an image sensing apparatus with a lens and an image sensor comprising a first pixel and a second pixel. First/second parts of the first/second pixels are respectively covered. ... Pixart Imaging Inc

04/27/17 / #20170116742

Image segmentation threshold value deciding method, gesture determining method, image sensing system and gesture determining system

An image segmentation threshold value determining method, comprising: defining a plurality of image regions of a first sensing image; determining a first, a second part image segmentation threshold values according to a first, second image regions of the image regions; performing a first, a second image segmentation operation to the first sensing image according to the first, the second part image segmentation threshold values to acquire a first, a second segmented images; and selecting one of the first part image segmentation threshold value and the second part image segmentation threshold value as the first image segmentation threshold value according to the first segmented image and the second segmented image.. . ... Pixart Imaging Inc

04/27/17 / #20170115159

Optical detecting device capable of preventing environmental pollution

An optical detecting device capable of preventing environmental pollution includes a casing, an optical detecting component and a transparent component. The casing includes a light through unit and at least one accommodating structure. ... Pixart Imaging Inc

04/20/17 / #20170109887

Work mode control method and optical encoder using the same

The present disclosure illustrates a work mode control method. The work mode control method includes the following steps. ... Pixart Imaging Inc

04/13/17 / #20170102790

Navigation trace calibrating method and related optical navigation device

A navigation trace calibrating method and a related optical navigation device are utilized to transform a first trace line generated by the optical navigation device into a second trace line suitable for user operation. The navigation trace calibrating method includes establishing a reference coordinate system, reading and analyzing the first trace line, calculating a first offset of the first trace line relative to the reference coordinate system, defining an offset between the first trace line and the second trace line as calibration weight to acquire a second offset of the second trace line relative to the reference coordinate system, and calculating a value of the calibration weight according to the second offset and a length of the first trace line.. ... Pixart Imaging Inc

03/30/17 / #20170094153

Distance measurement device based on phase difference and distance measurement method thereof

An imaging device including a pixel matrix and a processor is provided. The pixel matrix includes a plurality of phase detection pixels and a plurality of regular pixels. ... Pixart Imaging Inc

03/23/17 / #20170082734

Package structure of optical apparatus

The present invention provides a package structure of an optical apparatus which includes a substrate, a light emitting device, a light sensing device, and a light barrier member. The light emitting device is disposed on the substrate and electrically connected to the substrate. ... Pixart Imaging Inc

03/16/17 / #20170077921

Power on reset circuit, power on reset method and electric device using the same

Disclosed are a power on reset circuit, a power on reset method and an electric device using the same. In the power on reset circuit and method, a first voltage detecting circuit and a second voltage detecting circuit detect the voltage of a power supply and output a first voltage signal and a second voltage signal respectively. ... Pixart Imaging Inc

03/16/17 / #20170076521

Individualized control system utilizing biometric characteristic

A control system including a detection device and a control host is provided. The detection device is configured to detect a biometric characteristic to accordingly identify a user id, and output an id signal according to the user id. ... Pixart Imaging Inc

03/09/17 / #20170070688

Bjt pixel circuit capable of cancelling ambient light influence, image system including the same and operating method thereof

There is provided a bjt pixel circuit including a bjt transistor, a photodiode, a first storage capacitor and a second storage capacitor. The first storage capacitor is configured to discharge, via the bjt transistor, to a first output voltage in a first exposure time of the photodiode. ... Pixart Imaging Inc

03/02/17 / #20170064219

Imaging device for distinguishing foreground and operating method thereof, and image sensor

An imaging device including a condenser lens and an image sensor is provided. The image sensor is configured to sense light penetrating the condenser lens and includes a pixel matrix, an opaque layer, a plurality of microlenses and an infrared filter layer. ... Pixart Imaging Inc

03/02/17 / #20170063340

Programmable band-pass filter circuit of analog front-end used for capacitance detection

A programmable band-pass filter circuit, which is included by an analog front-end circuit and used for capacitance detection, includes an operational amplifier, an input resistor, a feedback resistor, and a feedback capacitor. The operational amplifier includes a first input coupled to a reference level, a second input, and an output. ... Pixart Imaging Inc

03/02/17 / #20170062628

Sensor chip package structure and manufacturing method thereof

A sensor chip package structure and a manufacturing method thereof are provided. The sensor chip package structure includes a substrate, a sensor chip and a wiring layer. ... Pixart Imaging Inc

03/02/17 / #20170061226

Optical encoder capable of identifying absolute positions and operating method thereof

The present disclosure is related to an optical encoder which is configured to provide precise coding reference data by feature recognition technology. To apply the present disclosure, it is not necessary to provide particular dense patterns on a working surface. ... Pixart Imaging Inc








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