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公开(公告)号：US11777515B2
公开(公告)日：2023-10-03
申请号：US17241075
申请日：2021-04-27
Applicant: Novatek Microelectronics Corp.
Inventor： Chih-Peng Hsia , Cho-Hsuan Jhang , Su-Wei Lien
CPC classification number: H03M1/508 , H03K5/135 , H03K5/1565 , H03M1/825
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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2.发明授权公开(公告)号：US11507225B2
公开(公告)日：2022-11-22
申请号：US17337453
申请日：2021-06-03
Applicant: Novatek Microelectronics Corp.
Inventor： Shih-Cheng Chen , Cho-Hsuan Jhang , Chih-Peng Hsia , Shiang-Fei Wang , Su-Wei Lien
Abstract: An electronic device, a fingerprint sensing control method and a fingerprint scanning control method 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 to control the at least one target fingerprint zone for performing fingerprint sensing. The electronic device performs an accelerated scanning operation. The accelerated scanning operation includes: setting a scanning speed corresponding to at least one target scanning group coupled to at least the touched area to a first speed; and setting a scanning speed corresponding to one or more scanning groups other than the at least one target scanning group to a second speed higher than the first speed.
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公开(公告)号：US11308306B2
公开(公告)日：2022-04-19
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: A control method for an optical fingerprint sensor and a touch controller are provided for canceling or reducing capacitive loading. 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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4.发明申请公开(公告)号：US20200342196A1
公开(公告)日：2020-10-29
申请号：US16907176
申请日：2020-06-20
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. 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.
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公开(公告)号：US11656716B2
公开(公告)日：2023-05-23
申请号：US17690016
申请日：2022-03-09
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
CPC classification number: G06F3/04164 , G06F3/0412 , G06F3/0421 , G06F3/0446 , G06V40/1318
Abstract: A control method for an optical fingerprint sensor and a touch controller is provided, for canceling or reducing capacitive loading. 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 configuring 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 to be floating when the touch controller is in a touch operation period.
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Patent Agency Ranking
公开(公告)号：US20220197466A1
公开(公告)日：2022-06-23
申请号：US17690016
申请日：2022-03-09
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: A control method for an optical fingerprint sensor and a touch controller is provided, for canceling or reducing capacitive loading. 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 configuring 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 to be floating when the touch controller is in a touch operation period.
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公开(公告)号：US11093080B2
公开(公告)日：2021-08-17
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：US20170371819A1
公开(公告)日：2017-12-28
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: G06F13/364 , G06F13/42 , G06F13/366
CPC classification number: G06F13/364 , G06F13/366 , G06F13/4282
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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公开(公告)号：US11295108B2
公开(公告)日：2022-04-05
申请号：US16907176
申请日：2020-06-20
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: A control method for an optical fingerprint sensor is provided for canceling or reducing capacitive loading. 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.
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10.发明申请公开(公告)号：US20210294492A1
公开(公告)日：2021-09-23
申请号：US17337453
申请日：2021-06-03
Applicant: Novatek Microelectronics Corp.
Inventor： Shih-Cheng Chen , Cho-Hsuan Jhang , Chih-Peng Hsia , Shiang-Fei Wang , Su-Wei Lien
Abstract: An electronic device, a fingerprint sensing control method and a fingerprint scanning control method 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 to control the at least one target fingerprint zone for performing fingerprint sensing. The electronic device performs an accelerated scanning operation. The accelerated scanning operation includes: setting a scanning speed corresponding to at least one target scanning group coupled to at least the touched area to a first speed; and setting a scanning speed corresponding to one or more scanning groups other than the at least one target scanning group to a second speed higher than the first speed.
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