Patents by Inventor Jui-Te Chiu

Jui-Te Chiu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11018170
    Abstract: An image sensor includes a pair of pixel sharing circuits, a second reset transistor, an amplifier transistor, a readout transistor and a control circuit. The pair of pixel sharing circuits connected to a floating diffusion node, each including a photon device, a first reset transistor, a capture transistor, a holding transistor, a capacitor and a sharing transistor. The control circuit is configured to control the first reset transistor, the first capture transistor, the first holding transistor and the sharing transistor of each of the pair of sharing pixel circuits to be turned on or off.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: May 25, 2021
    Assignee: PIXART IMAGING INC.
    Inventors: Kuan Tang, Jui-Te Chiu, Yi-Cheng Chiu, Chia-Chi Kuo, Kai-Chieh Chuang
  • Patent number: 11012653
    Abstract: A method of image sensor apparatus includes: providing pixel array having pixel units arranged in M rows and N columns; providing N parallel column readout circuits each being arranged for reading out pixel data of one corresponding column; disposing a horizontal shift register in row direction coupled to the N parallel column readout circuits, to receive a pulse signal and a clock signal, sequentially shift a phase of the pulse signal according to the clock signal, and scan a corresponding column according to the shifted phase of the pulse signal; and using a column select circuit having N latches to receive a power down digital control signal transmitted from a microcontroller wherein the power down digital control signal is used to disable at least one column readout circuit to enable and select a portion of the set of N parallel column readout circuits.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: May 18, 2021
    Assignee: PixArt Imaging Inc.
    Inventors: Chia-Chi Kuo, Jui-Te Chiu, Han-Chi Liu, Wei-Chia Huang, Yi-Cheng Chiu, Kuan Tang
  • Publication number: 20210132198
    Abstract: A time-of-flight sensor for capturing a three-dimensional (3D) image of an object, includes: a light source for emitting projection light pulses at the object according to a projection signal; an array of pixel circuits for sensing reflection light pulses and storing image charges according to the reflection light pulses; and a processing circuit for calculating a first sum of first portions of the image charges and a second sum of second portions of the image charges to generate a distance information signal of the 3D image of the object simultaneously, wherein in one accumulation period, the first portion of the image charges is generated during a first time period, and the second portion of the image charges is generated during a second time period, wherein the second time period is directly following the first time period in the accumulation period.
    Type: Application
    Filed: November 5, 2019
    Publication date: May 6, 2021
    Inventors: KUAN TANG, KAI-CHIEH CHUANG, CHIA-CHI KUO, JUI-TE CHIU
  • Patent number: 10999549
    Abstract: A column parallel ADC circuit includes: plural column ADCs and a digital processing circuit. The plural column ADCs generate respective plural digital counts. The plural column ADCs include a first column ADC and a second column ADC. The first column ADC generates a first digital count according to a first analog signal, and the second column ADC generates a second digital count according to a second analog signal. The first digital count is a difference between a first digital signal and a second digital signal. The first and the second digital signals correspond to the first and the second analog signals respectively. The digital processing circuit generates the plural digital signals, wherein the digital processing circuit generates the first digital signal according to the first digital count and the second digital signal.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: May 4, 2021
    Assignee: PIXART IMAGING INCORPORATION
    Inventors: Kuan Tang, Yi-Cheng Chiu, Chia-Chi Kuo, Jui-Te Chiu
  • Publication number: 20210112215
    Abstract: A method of image sensor apparatus includes: providing pixel array having pixel units arranged in M rows and N columns; providing N parallel column readout circuits each being arranged for reading out pixel data of one corresponding column; disposing a horizontal shift register in row direction coupled to the N parallel column readout circuits, to receive a pulse signal and a clock signal, sequentially shift a phase of the pulse signal according to the clock signal, and scan a corresponding column according to the shifted phase of the pulse signal; and using a column select circuit having N latches to receive a power down digital control signal transmitted from a microcontroller wherein the power down digital control signal is used to disable at least one column readout circuit to enable and select a portion of the set of N parallel column readout circuits.
    Type: Application
    Filed: October 14, 2019
    Publication date: April 15, 2021
    Inventors: Chia-Chi Kuo, Jui-Te Chiu, Han-Chi Liu, Wei-Chia Huang, Yi-Cheng Chiu, Kuan Tang
  • Publication number: 20200411571
    Abstract: An image sensor includes a pair of pixel sharing circuits, a second reset transistor, an amplifier transistor, a readout transistor and a control circuit. The pair of pixel sharing circuits connected to a floating diffusion node, each including a photon device, a first reset transistor, a capture transistor, a holding transistor, a capacitor and a sharing transistor. The control circuit is configured to control the first reset transistor, the first capture transistor, the first holding transistor and the sharing transistor of each of the pair of sharing pixel circuits to be turned on or off.
    Type: Application
    Filed: June 28, 2019
    Publication date: December 31, 2020
    Inventors: KUAN TANG, JUI-TE CHIU, YI-CHENG CHIU, CHIA-CHI KUO, KAI-CHIEH CHUANG
  • Publication number: 20200404205
    Abstract: A column parallel ADC circuit includes: plural column ADCs and a digital processing circuit. The plural column ADCs generate respective plural digital counts. The plural column ADCs include a first column ADC and a second column ADC. The first column ADC generates a first digital count according to a first analog signal, and the second column ADC generates a second digital count according to a second analog signal. The first digital count is a difference between a first digital signal and a second digital signal. The first and the second digital signals correspond to the first and the second analog signals respectively. The digital processing circuit generates the plural digital signals, wherein the digital processing circuit generates the first digital signal according to the first digital count and the second digital signal.
    Type: Application
    Filed: June 20, 2019
    Publication date: December 24, 2020
    Inventors: KUAN TANG, YI-CHENG CHIU, CHIA-CHI KUO, JUI-TE CHIU
  • Patent number: 10609319
    Abstract: An image sensor including a first pixel circuit, a second pixel circuit, a first readout line, a second readout line, a first readout circuit, a second readout circuit and an average switch is provided. The first and second pixel circuits are in two columns of a pixel array. The first readout line transmits pixel data of the first pixel circuit to the first readout circuit. The second readout line transmits pixel data of the second pixel circuit to the second readout circuit. The average switch is arranged between the first and second readout lines and used to electrically connect the first and second readout lines in an average mode to average the pixel data on the first and second readout lines.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: March 31, 2020
    Assignee: PIXART IMAGING INC.
    Inventors: Chia-Chi Kuo, Jui-Te Chiu, Han-Chi Liu, Peng-Sheng Chen, Yi-Cheng Chiu
  • Publication number: 20190360863
    Abstract: There is provided a circuit to improve the sensing efficiency of pixels that uses the induction effect of a capacitor to duplicate a voltage deviation caused by additional electrons and uses a circuit to cancel out the voltage deviation during reading pixel data thereby improving the sensing efficiency.
    Type: Application
    Filed: May 13, 2019
    Publication date: November 28, 2019
    Inventors: Kuan TANG, Yi-Cheng CHIU, Chia-Chi KUO, Jui-Te CHIU, Han-Chi LIU
  • Publication number: 20190326205
    Abstract: A chip package with at least eight pins includes a main body, seven first pins and a second pin. An integrated circuit is disposed inside the main body. The seven first pins are electrically connected with the integrated circuit and configured to provide specific functions. The second pin is electrically connected with the integrated circuit and disposed adjacent by some of the seven first pins. The second pin is a free pin and unconnected with a passive component. The second pin is applied for empty connection, switch of detection accuracy, printing actuation or page turning.
    Type: Application
    Filed: April 20, 2018
    Publication date: October 24, 2019
    Inventors: Peng-Sheng Chen, Jui-Te Chiu
  • Patent number: 10404934
    Abstract: 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.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: September 3, 2019
    Assignee: PixArt Imaging Inc.
    Inventors: Cheng-Seng Hsu, Jui-Te Chiu
  • Publication number: 20190174084
    Abstract: An image sensor including a first pixel circuit, a second pixel circuit, a first readout line, a second readout line, a first readout circuit, a second readout circuit and an average switch is provided. The first and second pixel circuits are in two columns of a pixel array. The first readout line transmits pixel data of the first pixel circuit to the first readout circuit. The second readout line transmits pixel data of the second pixel circuit to the second readout circuit. The average switch is arranged between the first and second readout lines and used to electrically connect the first and second readout lines in an average mode to average the pixel data on the first and second readout lines.
    Type: Application
    Filed: December 4, 2017
    Publication date: June 6, 2019
    Inventors: Chia-Chi KUO, Jui-Te CHIU, Han-Chi LIU, Peng-Sheng CHEN, Yi-Cheng CHIU
  • Publication number: 20180351552
    Abstract: The present disclosure illustrates a trigger circuit applied to an electronic apparatus having a plurality of triggers, which includes a trigger switch and a trigger network. The trigger switch, corresponding to one of the plurality of triggers, has a first end and a second end, in which the first end of the trigger switch is connected with a pad, and the second end of the trigger switch is connected with a voltage source having a first voltage value. Further, the trigger network, corresponding to a rest of the plurality of triggers, has at least one trigger sub-circuit electrically connected with the pad, in which the trigger network has an impedance value. When the trigger switch is triggered, due to an impedance value of the trigger network, the first voltage value will be detected at the pad.
    Type: Application
    Filed: June 2, 2017
    Publication date: December 6, 2018
    Inventors: PENG-SHENG CHEN, JUI-TE CHIU, HAN-CHI LIU
  • Patent number: 10067579
    Abstract: An amending circuit includes a comparing unit, a predetermined voltage generating unit, a roller switch, alight emitting unit switch and a controlling unit. A pin of the mouse and the predetermined voltage generating unit are respectively connected to two input terminals of the comparing unit. The controlling unit is coupled to the light emitting unit switch and the roller switch. The controlling unit switches to a motion detecting mode to drive a current of the current source to flow toward a second pin via the first pin and a light emitting unit of the mouse. The controlling unit further switches to a roller detecting mode to set a pressure of the first pin lower than a predetermined voltage of the predetermined voltage generating unit while the roller is grounded or to set the first pin higher than the predetermined voltage while the roller is not grounded.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: September 4, 2018
    Assignee: PixArt Imaging Inc.
    Inventors: Cheng-Seng Hsu, Jui-Te Chiu, Chung-Ting Yang
  • Patent number: 10062724
    Abstract: 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. Row reset transistor is coupled to a reference reset signal and photodiode, and is controlled by a row reset signal. Buffer transistor is coupled to the output of photodiode to receive and buffer the sensing signal. Column control transistor is electrically connected to the control end or the output of the buffer transistor and is used as a switch which can be closed or open according to a column control signal to control whether to transfer charge of the reference reset signal to a capacitor when the row reset transistor becomes conductive.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: August 28, 2018
    Assignee: PixArt Imaging Inc.
    Inventors: Peng-Sheng Chen, Jui-Te Chiu, Han-Chi Liu
  • Publication number: 20180240837
    Abstract: 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. Row reset transistor is coupled to a reference reset signal and photodiode, and is controlled by a row reset signal. Buffer transistor is coupled to the output of photodiode to receive and buffer the sensing signal. Column control transistor is electrically connected to the control end or the output of the buffer transistor and is used as a switch which can be closed or open according to a column control signal to control whether to transfer charge of the reference reset signal to a capacitor when the row reset transistor becomes conductive.
    Type: Application
    Filed: September 6, 2017
    Publication date: August 23, 2018
    Inventors: Peng-Sheng Chen, Jui-Te Chiu, Han-Chi Liu
  • Publication number: 20180115731
    Abstract: The present invention provides a global shutter high dynamic range pixel and a global shutter high dynamic range image sensor. The global shutter high dynamic range pixel includes: a photoelectric transducer unit, a floating node, a first charge transfer unit, a second charge transfer unit and a pixel signal output unit. The first charge transfer unit includes a Metal-Oxide-Semiconductor (MOS) capacitor. The MOS capacitor is configured to operably accumulate at least a portion of the charges transferred from the photoelectric transducer unit. The MOS capacitor is turned ON or OFF according to a control signal, thereby forming a gate-induced potential well internally within the MOS capacitor, so as to control the portion of charges.
    Type: Application
    Filed: May 18, 2017
    Publication date: April 26, 2018
    Inventors: Yung-Chung Lee, Yi-Cheng Chiu, Hsin-Hui Hsu, Jui-Te Chiu, Han-Chi Liu
  • Publication number: 20180103224
    Abstract: 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.
    Type: Application
    Filed: February 15, 2017
    Publication date: April 12, 2018
    Inventors: Cheng-Seng Hsu, Jui-Te Chiu
  • Patent number: 9877662
    Abstract: A vessel sensing device with automatic amendment function includes an analog processing circuit, a signal generating circuit and a DC voltage detecting circuit. The analog processing circuit includes an optical sensing module. An optical sensor of the optical sensing module generates an analog signal with a skin characteristic signal and a vessel characteristic signal according to an optical reflecting signal. The skin characteristic signal and the vessel characteristic signal respectively correspond to a skin feature and a vessel feature of the user. The signal generating circuit is coupled to the analog processing circuit to transform the analog signal into a compensation signal. The DC voltage detecting circuit is coupled to the signal generating circuit and adapted to compensate the analog processing circuit according to the compensation signal, so as to decrease the skin characteristic signal within the analog signal.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: January 30, 2018
    Assignee: PixArt Imaging Inc.
    Inventors: Peng-Sheng Chen, Hsiang-Wei Hwang, Jui-Te Chiu
  • Patent number: 9608575
    Abstract: A signal amplifying circuit with noise suppression function includes a first circuit module and a second circuit module. The first circuit module includes a current source and a switch. The current source is connected to an input stage for inputting a current. The switch is connected to a first output terminal and adapted to switch the input stage and the first output terminal according to a chopping frequency. The second circuit module includes an equivalent capacitance disposed between an output stage and a second input terminal connected to the first output terminal. The signal amplifying circuit controls current volume of the current source and capacity value of the equivalent capacitance to accordingly adjust an interior frequency bandwidth of the signal amplifying circuit, and the interior frequency bandwidth is smaller than the chopping frequency and greater than an input signal of the input stage.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: March 28, 2017
    Assignee: PixArt Imaging Inc.
    Inventors: Hsiang-Wei Hwang, Jui-Te Chiu