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公开(公告)号：US20210081640A1
公开(公告)日：2021-03-18
申请号：US17107962
申请日：2020-12-01
Applicant: NOVATEK Microelectronics Corp.
Inventor： Tsen-Wei Chang , Chih-Peng Hsia , Wei-Lun Shih , Hong-Chu Chen , Su-Wei Lien , Sheng-Wen Hsiao , Liang-Chi Cheng
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.
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公开(公告)号：US20200210668A1
公开(公告)日：2020-07-02
申请号：US16726834
申请日：2019-12-25
Applicant: Novatek Microelectronics Corp.
Inventor： Cho-Hsuan Jhang , Shih-Cheng Chen , Su-Wei Lien , Chih-Peng Hsia , Shiang-Fei Wang
Abstract: An electronic device and a fingerprint sensing control method thereof are provided. The electronic device includes a touch control circuit and a fingerprint sensing control circuit. The touch control circuit is coupled to the display panel. The touch control circuit performs touch detection on the display panel to obtain a finger press area corresponding to the finger on the display panel. The fingerprint sensing control circuit is coupled to the touch control circuit to obtain a finger press area. The fingerprint sensing control circuit is coupled to the display panel to perform a fingerprint sensing control on a display panel. The fingerprint sensing control circuit scans the finger press area on the display panel in a first direction during a first period and scans the finger press area in a second direction different from the first direction during a second period after the first period.
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公开(公告)号：US11893182B2
公开(公告)日：2024-02-06
申请号：US17960136
申请日：2022-10-05
Applicant: Novatek Microelectronics Corp.
Inventor： Shih-Cheng Chen , Cho-Hsuan Jhang , Chih-Peng Hsia , Shiang-Fei Wang , Su-Wei Lien
CPC classification number: G06F3/041661 , G06F3/042 , G06V10/235 , G06V40/13 , G06V40/1318 , G06V40/1335 , G06V40/1347
Abstract: An electronic device, and a method for performing fingerprint sensing control on a display panel are provided. A sensing region of the display panel is divided into a plurality of fingerprint zones. The electronic device determines at least one target fingerprint zone from the fingerprint zones according to a touch location, wherein the fingerprint zones are coupled to a plurality of scanning groups, each of the scanning groups comprises one or more scanning lines, the at least one target fingerprint zone is coupled to a first scanning group and a second scanning group other than the first scanning group among the plurality of scanning groups. The electronic device scans the first scanning group with a first speed, and scans the second scanning group with a second speed higher than the first speed or skips scanning the second scanning group.
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公开(公告)号：US20230021934A1
公开(公告)日：2023-01-26
申请号：US17960136
申请日：2022-10-05
Applicant: Novatek Microelectronics Corp.
Inventor： Shih-Cheng Chen , Cho-Hsuan Jhang , Chih-Peng Hsia , Shiang-Fei Wang , Su-Wei Lien
Abstract: An electronic device, and a method for performing fingerprint sensing control on a display panel are provided. A sensing region of the display panel is divided into a plurality of fingerprint zones. The electronic device determines at least one target fingerprint zone from the fingerprint zones according to a touch location, wherein the fingerprint zones are coupled to a plurality of scanning groups, each of the scanning groups comprises one or more scanning lines, the at least one target fingerprint zone is coupled to a first scanning group and a second scanning group other than the first scanning group among the plurality of scanning groups. The electronic device scans the first scanning group with a first speed, and scans the second scanning group with a second speed higher than the first speed or skips scanning the second scanning group.
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Patent Agency Ranking
公开(公告)号：US20220345147A1
公开(公告)日：2022-10-27
申请号：US17241075
申请日：2021-04-27
Applicant: Novatek Microelectronics Corp.
Inventor： Chih-Peng Hsia , Cho-Hsuan Jhang , Su-Wei Lien
Abstract: A column analog-to-digital converter and the local counting method is provided. The column analog-to-digital converter includes a plurality of analog-to-digital converters in parallel. Each of the analog-to-digital converters includes a comparator and a counting circuit. The comparator compares the ramp voltage with one of the plurality of column signals to generate a comparator output signal. The counting circuit generates a local clock by means of a voltage-controlled oscillator of the counting circuit according to the base clock and the comparator output signal, counts the base clock and the local clock respectively to generate a first counting output and a second counting output, and combines the first counting output with the second counting output to generate the counting output.
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公开(公告)号：US11444630B1
公开(公告)日：2022-09-13
申请号：US17363029
申请日：2021-06-30
Applicant: Novatek Microelectronics Corp.
Inventor： Chih-Peng Hsia , Cho-Hsuan Jhang , Su-Wei Lien
IPC: H03M1/34 , H03M1/06 , H04N5/3745
Abstract: A column analog-to-digital converter and the local counting method is provided. The column analog-to-digital converter includes a plurality of analog-to-digital converters in parallel. Each of the analog-to-digital converters includes a comparator and a counting circuit. The comparator compares the ramp voltage with one of the plurality of column signals to generate a comparator output signal. The counting circuit triggers a delay line circuit of the counting circuit to generate first delay data according to the comparator output signal, re-triggers the delay line circuit to generate first re-trigger delay data according to a base clock, and compares the first delay data with the first re-trigger delay data to generate a first counting output.
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公开(公告)号：US11321958B2
公开(公告)日：2022-05-03
申请号：US16726834
申请日：2019-12-25
Applicant: Novatek Microelectronics Corp.
Inventor： Cho-Hsuan Jhang , Shih-Cheng Chen , Su-Wei Lien , Chih-Peng Hsia , Shiang-Fei Wang
Abstract: An electronic device and a fingerprint sensing control method thereof are provided. The electronic device includes a touch control circuit and a fingerprint sensing control circuit. The touch control circuit is coupled to the display panel. The touch control circuit performs touch detection on the display panel to obtain a finger press area corresponding to the finger on the display panel. The fingerprint sensing control circuit is coupled to the touch control circuit to obtain a finger press area. The fingerprint sensing control circuit is coupled to the display panel to perform a fingerprint sensing control on a display panel. The fingerprint sensing control circuit scans the finger press area on the display panel in a first direction during a first period and scans the finger press area in a second direction different from the first direction during a second period after the first period.
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公开(公告)号：US20200210065A1
公开(公告)日：2020-07-02
申请号：US16726250
申请日：2019-12-24
Applicant: Novatek Microelectronics Corp.
Inventor： Shih-Cheng Chen , Cho-Hsuan Jhang , Chih-Peng Hsia , Shiang-Fei Wang , Su-Wei Lien
Abstract: An electronic device and a fingerprint sensing control method thereof are provided. A sensing region of a display panel is divided into a plurality of fingerprint zones. The electronic device determines at least one target fingerprint zone from the fingerprint zones according to a touched area. The electronic device scans the at least one target fingerprint zone for performing fingerprint sensing. The electronic device performs an accelerated reading operation. The accelerated reading operation includes: reading at least one sensing signal from the at least one target fingerprint zone; and skipping reading at least one of the fingerprint zones other than the at least one target fingerprint zone among the fingerprint zones.
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公开(公告)号：US10176129B2
公开(公告)日：2019-01-08
申请号：US15213407
申请日：2016-07-19
Applicant: NOVATEK Microelectronics Corp.
Inventor： Chih-Huang Lin , Hong-Chu Chen , Min-Hui Chu , Chin-Hui Huang , Wei-Lung Liu , Tai-Yu Chiu , Chao-Chun Huang , Su-Wei Lien
IPC: G06F13/00 , G06F13/364 , G06F13/366 , G06F13/42
Abstract: A control method for a first device of an inter-integrated circuit (I2C) system including a microcontroller unit (MCU), includes receiving a first indication from the MCU of the I2C system, wherein the first indication configures the first device from a slave mode to a master mode; polling the first device itself for status information of the first device when the first device is in the master mode; determining whether the status information of the first device matches a target status after polling; and determining to perform a parameter adjustment on a second device of the I2C system when determining that the status information of the first device matches the target status.
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