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1
US11030435B1
Image sensing method and system
Publication/Patent Number: US11030435B1 Publication Date: 2021-06-08 Application Number: 16/828,918 Filing Date: 2020-03-24 Inventor: Hung, Ting-hsuan   Shih wei lun   Lin, Wu-wei   Assignee: NOVATEK Microelectronics Corp.   IPC: G06K9/00 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.
2
US2021034189A1
ELECTRONIC CIRCUIT HAVING DISPLAY DRIVING FUNCTION, TOUCH SENSING FUNCTION AND FINGERPRINT SENSING FUNCTION
Publication/Patent Number: US2021034189A1 Publication Date: 2021-02-04 Application Number: 16/944,157 Filing Date: 2020-07-31 Inventor: Cheng, Huan-teng   Shih wei lun   Tang, Huang-chin   Assignee: Novatek Microelectronics Corp.   IPC: G06F3/041 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.
3
US2021056333A1
Control circuit and related method for controlling display panel
Publication/Patent Number: US2021056333A1 Publication Date: 2021-02-25 Application Number: 16/851,043 Filing Date: 2020-04-16 Inventor: Cheng, Huan-teng   Shih wei lun   Tang, Huang-chin   Assignee: NOVATEK Microelectronics Corp.   IPC: G06K9/00 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.
4
US2021056280A1
Control circuit and related method for controlling display panel
Publication/Patent Number: US2021056280A1 Publication Date: 2021-02-25 Application Number: 16/865,404 Filing Date: 2020-05-03 Inventor: Cheng, Huan-teng   Shih wei lun   Tang, Huang-chin   Assignee: NOVATEK Microelectronics Corp.   IPC: G06K9/00 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.
5
US2021224548A1
DRIVING DEVICE AND OPERATION METHOD THEREOF
Publication/Patent Number: US2021224548A1 Publication Date: 2021-07-22 Application Number: 17/155,116 Filing Date: 2021-01-22 Inventor: Shih wei lun   Lin, Wu Wei   Assignee: Novatek Microelectronics Corp.   IPC: G06K9/00 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. The operation of “the same frame polarity configuration rule” comprises fixing a relation between a first polarity configuration (which is the frame polarity configuration of the display panel when performing the sensor reset operation on a same fingerprint frame) and a second polarity configuration (which is the frame polarity configuration of the display panel when performing the image capture operation on the same fingerprint frame) whenever the fingerprint sensing operation is performed.
6
US11036952B2
Touch apparatus and touch detection integrated circuit thereof
Publication/Patent Number: US11036952B2 Publication Date: 2021-06-15 Application Number: 16/677,605 Filing Date: 2019-11-07 Inventor: Hung, Ching-ho   Tsai, Jiun-jie   Hung, Ting-hsuan   Shih wei lun   Assignee: Novatek Microelectronics Corp.   IPC: G06F3/041 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.
7
US2021034835A1
ELECTRONIC CIRCUIT HAVING DISPLAY DRIVING FUNCTION, TOUCH SENSING FUNCTION AND FINGERPRINT SENSING FUNCTION
Publication/Patent Number: US2021034835A1 Publication Date: 2021-02-04 Application Number: 16/907,306 Filing Date: 2020-06-21 Inventor: Cheng, Huan-teng   Hung, Ting-hsuan   Shih wei lun   Tang, Huang-chin   Assignee: Novatek Microelectronics Corp.   IPC: G06K9/00 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.
8
US2021073504A1
ELECTRONIC DEVICE, CHIP, PANEL, DECODER AND OPERATION METHOD THEREOF
Publication/Patent Number: US2021073504A1 Publication Date: 2021-03-11 Application Number: 17/005,325 Filing Date: 2020-08-28 Inventor: Shih wei lun   Lin, Wu-wei   Tang, Huang-chin   Hung, Ting-hsuan   Assignee: Novatek Microelectronics Corp.   IPC: G06K9/00 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.
9
US2021034833A1
ELECTRONIC CIRCUIT HAVING DISPLAY DRIVING FUNCTION, TOUCH SENSING FUNCTION AND FINGERPRINT SENSING FUNCTION
Publication/Patent Number: US2021034833A1 Publication Date: 2021-02-04 Application Number: 16/933,952 Filing Date: 2020-07-20 Inventor: Cheng, Huan-teng   Hung, Ting-hsuan   Hsieh, Tzu-wen   Shih wei lun   Tang, Huang-chin   Assignee: Novatek Microelectronics Corp.   IPC: G06K9/00 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.
10
US2021081640A1
Control method for optical fingerprint sensor and related control circuit
Publication/Patent Number: US2021081640A1 Publication Date: 2021-03-18 Application Number: 17/107,962 Filing Date: 2020-12-01 Inventor: Chang, Tsen-wei   Hsia, Chih-peng   Shih wei lun   Chen, Hong-chu   Lien, Su-wei   Hsiao, Sheng-wen   Cheng, Liang-chi   Assignee: NOVATEK Microelectronics Corp.   IPC: G06K9/00 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.
11
US2021056281A1
ELECTRONIC CIRCUIT HAVING DISPLAY DRIVING FUNCTION, TOUCH SENSING FUNCTION AND FINGERPRINT SENSING FUNCTION
Publication/Patent Number: US2021056281A1 Publication Date: 2021-02-25 Application Number: 16/921,921 Filing Date: 2020-07-06 Inventor: Shih wei lun   Hsieh, Tzu-wen   Cheng, Huan-teng   Tang, Huang-chin   Mai, Yueh-teng   Huang, Shi-hao   Lee, Jung-chung   Assignee: Novatek Microelectronics Corp., Hsinchu, TAIWAN   IPC: G06K9/00 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.
12
US2020134285A1
TOUCH APPARATUS AND TOUCH DETECTION INTEGRATED CIRCUIT THEREOF
Publication/Patent Number: US2020134285A1 Publication Date: 2020-04-30 Application Number: 16/677,605 Filing Date: 2019-11-07 Inventor: Hung, Ching-ho   Tsai, Jiun-jie   Hung, Ting-hsuan   Shih wei lun   Assignee: Novatek Microelectronics Corp.   IPC: G06K9/00 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.
13
US2020327301A1
DRIVING APPARATUS AND OPERATION METHOD THEREOF
Publication/Patent Number: US2020327301A1 Publication Date: 2020-10-15 Application Number: 16/845,001 Filing Date: 2020-04-09 Inventor: Shih wei lun   Chang, Tsen-wei   Jhang, Cho-hsuan   Hsia, Chih-peng   Chiang, Cheng-yu   Assignee: Novatek Microelectronics Corp.   IPC: G06K9/00 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.
14
US2020342196A1
Control method for optical fingerprint sensor and related control circuit and optical fingerprint sensor
Publication/Patent Number: US2020342196A1 Publication Date: 2020-10-29 Application Number: 16/907,176 Filing Date: 2020-06-20 Inventor: Chang, Tsen-wei   Hsia, Chih-peng   Shih wei lun   Chen, Hong-chu   Lien, Su-wei   Hsiao, Sheng-wen   Cheng, Liang-chi   Assignee: NOVATEK Microelectronics Corp.   IPC: G06K9/00 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.
15
US9967774B2
Compression method featuring dynamic coding for wireless communication in wireless networks
Publication/Patent Number: US9967774B2 Publication Date: 2018-05-08 Application Number: 14/932,636 Filing Date: 2015-11-04 Inventor: Chien, Chun   Chin, Jui-chih   Shih wei lun   Hsu, Ruei-hau   Chen, Jyh-cheng   Assignee: National Chiao Tung University   IPC: H04L12/801 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.
16
US2016135085A1
Compression Method Featuring Dynamic Coding for Wireless Communication in Wireless Networks
Publication/Patent Number: US2016135085A1 Publication Date: 2016-05-12 Application Number: 14/932,636 Filing Date: 2015-11-04 Inventor: Chen, Jyh-cheng   Hsu, Ruei-hau   Shih wei lun   Chin, Jui-chih   Chien, Chun   Assignee: National Chiao Tung University   IPC: H04W28/06 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.
17
TWI527408B
Method of dynamic coding scheme to compress wireless communication in wireless networks
Publication/Patent Number: TWI527408B Publication Date: 2016-03-21 Application Number: 103139020 Filing Date: 2014-11-11 Inventor: Chen, Jyh-cheng   Hsu, Ruei-hau   Chien, Chun   Shih wei lun   Chih, Chin-jui   Assignee: National Chiao Tung University   IPC: H04L12/951 Abstract: A method of dynamic coding scheme to compress wireless communication in wireless networks. Access point (AP) will divide a packet into several chunks of fixed-length and record the repeat time of every type of chunk to encode the redundant chunks. AP sorts the repeat times of all chunks and establishes Huffman code. Every Huffman code represents a corresponding encoded chunk. After the Huffman code established
18
TW201618508A
Method of dynamic coding scheme to compress wireless communication in wireless networks
Publication/Patent Number: TW201618508A Publication Date: 2016-05-16 Application Number: 103139020 Filing Date: 2014-11-11 Inventor: Chen, Jyh-cheng   Hsu, Ruei-hau   Chien, Chun   Shih wei lun   Chih, Chin-jui   Assignee: National Chiao Tung University   IPC: H04L12/951 Abstract: A method of dynamic coding scheme to compress wireless communication in wireless networks. Access point (AP) will divide a packet into several chunks of fixed-length and record the repeat time of every type of chunk to encode the redundant chunks. AP sorts the repeat times of all chunks and establishes Huffman code. Every Huffman code represents a corresponding encoded chunk. After the Huffman code established