Patents by Inventor Wei-Lun SHIH

Wei-Lun SHIH 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).

  • Publication number: 20210224548
    Abstract: A driving device and an operation method thereof are provided. The driving device includes a first driving circuit and a second driving circuit. The first driving circuit performs a display driving operation to a display panel. The second driving circuit performs a fingerprint sensing operation (including a sensor reset operation and an image capture operation) to the display panel according to a timing control signal of the first driving circuit. The fingerprint sensing operation is operated with a same frame polarity configuration rule.
    Type: Application
    Filed: January 22, 2021
    Publication date: July 22, 2021
    Applicant: Novatek Microelectronics Corp.
    Inventors: Wei-Lun Shih, Wu Wei Lin
  • Patent number: 11036952
    Abstract: A touch apparatus and a touch detection integrated circuit (IC) thereof are provided. The touch detection IC includes a driving signal generation circuit and a receiving circuit. The driving signal generation circuit is configured to control a touch panel to perform touch sensing operation and control a fingerprint sensor to perform fingerprint sensing operation. The receiving circuit receives and processes a touch signal of the touch panel during a first period when the driving signal generation circuit transmits the first driving signal for controlling the touch panel to perform touch sensing operation. The receiving circuit receives and processes a fingerprint signal of the fingerprint sensor during a second period when the driving signal generation circuit transmits the second driving signal for controlling the fingerprint sensor to perform fingerprint sensing operation.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: June 15, 2021
    Assignee: Novatek Microelectronics Corp.
    Inventors: Ching-Ho Hung, Jiun-Jie Tsai, Ting-Hsuan Hung, Wei-Lun Shih
  • Patent number: 11030435
    Abstract: A method of sensing an image from a panel for an image sensing circuit includes the steps of: transmitting a first voltage or current to the panel; receiving a plurality of sensing signals from the panel, wherein the plurality of sensing signals correspond to the first voltage or current; determining whether the plurality of sensing signals conform to an operation range of the image sensing circuit; and adjusting the first voltage or current when the plurality of sensing signals are determined to be not conform to the operation range of the image sensing circuit.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: June 8, 2021
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Ting-Hsuan Hung, Wei-Lun Shih, Wu-Wei Lin
  • Publication number: 20210081640
    Abstract: The present invention provides a control method for an optical fingerprint sensor and a touch controller. The optical fingerprint sensor includes a plurality of pixels, and each of the pixels has a first control signal line and a second control signal line. Each of the pixels is further coupled to a first voltage source line, a second voltage source line and a sensing line. The control method includes the step of applying an anti-loading driving (ALD) signal on at least one of the first control signal line, the second control signal line, the first voltage source line, the second voltage source line and the sensing line when the touch controller is in a touch operation period.
    Type: Application
    Filed: December 1, 2020
    Publication date: March 18, 2021
    Inventors: Tsen-Wei Chang, Chih-Peng Hsia, Wei-Lun Shih, Hong-Chu Chen, Su-Wei Lien, Sheng-Wen Hsiao, Liang-Chi Cheng
  • Publication number: 20210073504
    Abstract: A chip, an electronic device, a panel and an operation method thereof are provided. The chip can control the panel to perform fingerprint sensing. Fingerprint sensing pixels of the panel are divided into a plurality of fingerprint zones along a column direction. The chip includes a selecting circuit and a control circuit. The selecting circuit obtains information about a selected fingerprint zone among the fingerprint zones. The control circuit provides multiple control signals for controlling the panel to perform fingerprint sensing. The control signals include multiple start pulse signals. The start pulse signals collectively indicate the selected fingerprint zone. The number of the fingerprint zones is greater than the number of the start pulse signals.
    Type: Application
    Filed: August 28, 2020
    Publication date: March 11, 2021
    Applicant: Novatek Microelectronics Corp.
    Inventors: Wei-Lun Shih, Wu-Wei Lin, Huang-Chin Tang, Ting-Hsuan Hung
  • Publication number: 20210056280
    Abstract: A control circuit configured to control a display panel under normal display includes a display driver circuit, a touch sensing circuit and a fingerprint sensing circuit. The touch sensing circuit, coupled to the display driver circuit, is configured to detect a predetermined touch gesture on the display panel and determine a position of the display panel on which the predetermined touch gesture is detected. The fingerprint sensing circuit, coupled to the touch sensing circuit, is configured to perform fingerprint sensing on at least one zone corresponding to the position when the predetermined touch gesture is detected, in order to perform a specific function.
    Type: Application
    Filed: May 3, 2020
    Publication date: February 25, 2021
    Inventors: Huan-Teng Cheng, Wei-Lun Shih, Huang-Chin Tang
  • Publication number: 20210056281
    Abstract: An electronic circuit for driving a panel including touch sensors and fingerprint sensors is provided. The electronic circuit includes a touch sensing circuit, a fingerprint sensing circuit and a display driving circuit. The touch sensing circuit senses a touch of a finger and determines a first area corresponding to the touch on the panel. The fingerprint sensing circuit senses a fingerprint image of the finger corresponding to the first area of the panel. The display driving circuit drives pixels over the panel with respective first gray levels during a first phase, and drives pixels of the first area with respective second gray levels and pixels of a second area outside the first area with respective third gray levels during a second phase. The respective second gray levels are higher than the respective first gray levels, and the respective third gray levels are lower than the respective second gray levels.
    Type: Application
    Filed: July 6, 2020
    Publication date: February 25, 2021
    Inventors: Wei-Lun Shih, Tzu-Wen Hsieh, Huan-Teng Cheng, Huang-Chin Tang, Yueh-Teng Mai, Shi-Hao Huang, Jung-Chung Lee
  • Publication number: 20210056333
    Abstract: A control circuit configured to control a display panel includes a display driver circuit, a touch sensing circuit and a fingerprint sensing circuit. The touch sensing circuit, coupled to the display driver circuit and the fingerprint sensing circuit, is configured to detect a finger touch on the display panel, determine a position of the display panel on which the finger touch is detected, and send information associated with the position to the fingerprint sensing circuit. The fingerprint sensing circuit is configured to perform fingerprint sensing on at least one zone corresponding to the position and receive fingerprint image signals from the at least one zone correspondingly.
    Type: Application
    Filed: April 16, 2020
    Publication date: February 25, 2021
    Inventors: Huan-Teng Cheng, Wei-Lun Shih, Huang-Chin Tang
  • Publication number: 20210034835
    Abstract: An electronic circuit including a touch control circuit, a fingerprint sensing circuit and a switch circuit is provided. The touch control circuit is configured to receive touch sensing signals from a panel and determine a touch area according to the touch sensing signals. The fingerprint sensing circuit is configured to receive fingerprint sensing signals corresponding to at least one fingerprint image from fingerprint sensors disposed in the panel via fingerprint sensing lines. The switch circuit is coupled to the fingerprint sensing circuit. The switch circuit is configured to be coupled to a part of the fingerprint sensing lines that is selected to form a fingerprint sensing zone for a fingerprint sensing operation according to the determined touch area. Each of the fingerprint sensing lines is selectable to be a boundary of the fingerprint sensing zone. An electronic device and a method for sensing at least one fingerprint image are also provided.
    Type: Application
    Filed: June 21, 2020
    Publication date: February 4, 2021
    Applicant: Novatek Microelectronics Corp.
    Inventors: Huan-Teng Cheng, Ting-Hsuan Hung, Wei-Lun Shih, Huang-Chin Tang
  • Publication number: 20210034189
    Abstract: An electronic circuit is adapted to drive a display panel having touch sensors and fingerprint sensors. The electronic circuit includes a first circuit, a second circuit, a first switch circuit and a control circuit. The first circuit processes touch sensing signals from the touch sensors. The second circuit processes fingerprint sensing signals corresponding to a fingerprint from the fingerprint sensors. The first switch circuit includes a plurality of first terminals coupled to the first circuit and the second circuit and a plurality of second terminals configurable to be coupled to the display panel. The first switch circuit couples a part of the first terminals to the second terminals in a first time interval and couples the other part of the first terminals to the second terminals in a second time interval. The touch sensing signals and the fingerprint sensing signals are inputted to the electronic circuit through the second terminals.
    Type: Application
    Filed: July 31, 2020
    Publication date: February 4, 2021
    Applicant: Novatek Microelectronics Corp.
    Inventors: Huan-Teng Cheng, Wei-Lun Shih, Huang-Chin Tang
  • Publication number: 20210034833
    Abstract: An electronic circuit adapted to drive a display panel including touch sensors and fingerprint sensors is provided. The electronic circuit includes a first circuit, a second circuit, a first switch circuit and a control circuit. The first circuit generates display driving signals for driving the display panel. The second circuit receives fingerprint sensing signals from the fingerprint sensors. The first switch circuit is coupled to a second switch circuit on the display panel. The control circuit generates control signals for controlling the first switch circuit and the second switch circuit, so as to control the electronic circuit to transmit the display driving signals from the first circuit to the data lines through the first and the second switch circuits in a first time interval, and control the electronic circuit to receive the fingerprint sensing signals from the fingerprint sensors through the first and the second switch circuits in a second time interval.
    Type: Application
    Filed: July 20, 2020
    Publication date: February 4, 2021
    Applicant: Novatek Microelectronics Corp.
    Inventors: Huan-Teng Cheng, Ting-Hsuan Hung, Tzu-Wen Hsieh, Wei-Lun Shih, Huang-Chin Tang
  • Publication number: 20200342196
    Abstract: The present invention provides a control method for an optical fingerprint sensor. The optical fingerprint sensor includes a plurality of pixels, and each of the pixels has a first control signal line and a second control signal line. Each of the pixels is further coupled to a first voltage source line, a second voltage source line and a sensing line. The control method includes a plurality of steps, and the steps are applying a first anti-loading driving (ALD) signal on the second control signal line, and applying a second ALD signal on at least one of the first control signal line, the first voltage source line, the second voltage source line and the sensing line.
    Type: Application
    Filed: June 20, 2020
    Publication date: October 29, 2020
    Inventors: Tsen-Wei Chang, Chih-Peng Hsia, Wei-Lun Shih, Hong-Chu Chen, Su-Wei Lien, Sheng-Wen Hsiao, Liang-Chi Cheng
  • Publication number: 20200327301
    Abstract: A driving apparatus and an operation method thereof are provided. The driving apparatus includes a first driving circuit and a second driving circuit. The first driving circuit performs a first driving mode on a panel. The first driving circuit performs the first driving mode during a first frame period among a plurality of frame periods and skips the first driving mode during a first skip period between the first frame period and a second frame period among the frame periods. The first driving circuit outputs timing control signal including a timing that the first driving mode is skipped. The second driving circuit is coupled to the first driving circuit to receive the timing control signal. The second driving circuit performs a fingerprint sensing operation different from the first driving mode on the panel according to the timing control signal during the first skip period.
    Type: Application
    Filed: April 9, 2020
    Publication date: October 15, 2020
    Applicant: Novatek Microelectronics Corp.
    Inventors: Wei-Lun Shih, Tsen-Wei Chang, Cho-Hsuan Jhang, Chih-Peng Hsia, Cheng-Yu Chiang
  • Publication number: 20200134285
    Abstract: A touch apparatus and a touch detection integrated circuit (IC) thereof are provided. The touch detection IC includes a driving signal generation circuit and a receiving circuit. The driving signal generation circuit is configured to control a touch panel to perform touch sensing operation and control a fingerprint sensor to perform fingerprint sensing operation. The receiving circuit receives and processes a touch signal of the touch panel during a first period when the driving signal generation circuit transmits the first driving signal for controlling the touch panel to perform touch sensing operation. The receiving circuit receives and processes a fingerprint signal of the fingerprint sensor during a second period when the driving signal generation circuit transmits the second driving signal for controlling the fingerprint sensor to perform fingerprint sensing operation.
    Type: Application
    Filed: November 7, 2019
    Publication date: April 30, 2020
    Applicant: Novatek Microelectronics Corp.
    Inventors: Ching-Ho Hung, Jiun-Jie Tsai, Ting-Hsuan Hung, Wei-Lun Shih
  • Patent number: 9967774
    Abstract: A compression method featuring dynamic coding for wireless communication in wireless network is used to transmit a packet to clients. An access point (AP) divides a packet into several chunks all having a fixed length, sorts repetition frequencies of all the chunks, and encodes the repeated chunks with Huffman codes. Before transmitting the packet, AP divides the packet into chunks and determines whether there are chunks having been encoded, and transmits the encoded packet and the codes thereof to a specified client and other clients within coverage of transmission. After receiving the encoded packets, the client decodes the encoded packets to recover the original ones. The other clients also store the repeated chunks and the codes thereof. The information of the Huffman codes of the repeated chunks needn't be transmitted every time for different clients since other clients may overhear the Huffman codes not intended to send to them.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: May 8, 2018
    Assignee: National Chiao Tung University
    Inventors: Jyh-Cheng Chen, Ruei-Hau Hsu, Wei-Lun Shih, Jui-Chih Chin, Chun Chien
  • Publication number: 20160135085
    Abstract: A compression method featuring dynamic coding for wireless communication in wireless network is used to transmit a packet to clients. An access point (AP) divides a packet into several chunks all having a fixed length, sorts repetition frequencies of all the chunks, and encodes the repeated chunks with Huffman codes. Before transmitting the packet, AP divides the packet into chunks and determines whether there are chunks having been encoded, and transmits the encoded packet and the codes thereof to a specified client and other clients within coverage of transmission. After receiving the encoded packets, the client decodes the encoded packets to recover the original ones. The other clients also store the repeated chunks and the codes thereof The information of the Huffman codes of the repeated chunks needn't be transmitted every time for different clients since other clients may overhear the Huffman codes not intended to send to them.
    Type: Application
    Filed: November 4, 2015
    Publication date: May 12, 2016
    Inventors: Jyh-Cheng CHEN, Ruei-Hau HSU, Wei-Lun SHIH, Jui-Chih CHIN, Chun CHIEN