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公开(公告)号：US20210109639A1
公开(公告)日：2021-04-15
申请号：US17037763
申请日：2020-09-30
Applicant: NOVATEK MICROELECTRONICS CORP.
Inventor： TZU-WEN HSIEH , WEILUN SHIH , TING-HSUAN HUNG , HUANG-CHIN TANG
Abstract: A single-chip device for driving a panel including fingerprint sensing pixels, display pixels and touch sensors, electronic module therefor, and electronic apparatus are provided. The single-chip device comprises a main body, a first group of pads and a second group of pads disposed in the main body. The first group of pads comprise first pads for driving the fingerprint sensing pixels, and are disposed on at least one of a left portion and a right portion of the main body with respect to an axis. The second group of pads comprise second pads for driving the display pixels and the touch sensors, and are disposed on at least another one of the left portion and the right portion, wherein at least one group of the first group of pads and the second group of pads are disposed only on the one of the left portion and the right portion.
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公开(公告)号：US10977973B1
公开(公告)日：2021-04-13
申请号：US16582097
申请日：2019-09-25
Applicant: NOVATEK MICROELECTRONICS CORP.
Inventor： Yen-Cheng Cheng , Hsiu-Hui Yang
Abstract: A display device and a detection method applied to the display device are provided. The display device includes a display panel, a source control circuit, and a leakage estimation circuit. The display panel includes pixels being arranged in M columns, wherein at least one panel-partition is defined on the display panel. The source control circuit includes M source drivers which respectively provide data voltages to the M columns of pixels. The leakage estimation circuit includes an evaluation circuit, a defect detection circuit, and a mode-switch. The evaluation circuit controls the defect detection circuit to perform a leakage estimation procedure so that a leakage current corresponding to the panel-partition is estimated when the at least one mode-switch is turned on.
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公开(公告)号：US10977145B2
公开(公告)日：2021-04-13
申请号：US15919137
申请日：2018-03-12
Applicant: NOVATEK Microelectronics Corp.
Inventor： Chia-Ta Lai
Abstract: A method of phase calibration for a system to control a double data rate memory device includes setting a scanning frequency at an initial value to determining if a built-in self-test passes, decreasing the scanning frequency by a frequency decrement and then performing the BIST again until the BIST passes, performing a phase calibration procedure to obtain a phase window with respect to the scanning frequency and obtain a target phase obtained based on the phase window to determine if the scanning frequency is lower than a maximum value, and increasing the scanning frequency by a frequency increment and then performing the phase calibration procedure again, until the scanning frequency being determined not lower than the maximum value.
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公开(公告)号：US10970509B1
公开(公告)日：2021-04-06
申请号：US16740497
申请日：2020-01-13
Applicant: Novatek Microelectronics Corp.
Inventor： Ping Liu
IPC: G06K9/00
Abstract: A fingerprint recognition apparatus with fingerprint data compression is introduced, including: a pixel array obtaining a fingerprint data; a control circuit coupling to the pixel array and obtaining characteristic values of the pixel array; an effective fingerprint distribution judgement circuit coupling to the pixel array and determining a first part of the pixel array as an effective fingerprint zone and a second part of the pixel array as an invalid fingerprint zone according to the characteristic values of each row of the pixel array; and a multi-compressing circuit coupling to the effective fingerprint distribution judgement circuit and compressing the fingerprint data in the effective fingerprint zone with a first compression method and compressing the fingerprint data in the invalid fingerprint zone with a second compression method.
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公开(公告)号：US20210090479A1
公开(公告)日：2021-03-25
申请号：US16582097
申请日：2019-09-25
Applicant: NOVATEK MICROELECTRONICS CORP.
Inventor： Yen-Cheng CHENG , Hsiu-Hui YANG
Abstract: A display device and a detection method applied to the display device are provided. The display device includes a display panel, a source control circuit, and a leakage estimation circuit. The display panel includes pixels being arranged in M columns, wherein at least one panel-partition is defined on the display panel. The source control circuit includes M source drivers which respectively provide data voltages to the M columns of pixels. The leakage estimation circuit includes an evaluation circuit, a defect detection circuit, and a mode-switch. The evaluation circuit controls the defect detection circuit to perform a leakage estimation procedure so that a leakage current corresponding to the panel-partition is estimated when the at least one mode-switch is turned on.
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Patent Agency Ranking
546.发明申请公开(公告)号：US20210089746A1
公开(公告)日：2021-03-25
申请号：US17015026
申请日：2020-09-08
Applicant: Novatek Microelectronics Corp.
Inventor： Wu-Wei Lin
IPC: G06K9/00
Abstract: An electronic circuit adapted to drive a panel including a plurality of fingerprint sensing zones is provided. The electronic circuit includes a fingerprint sensing circuit. The fingerprint sensing circuit is configured to determine at least one of the fingerprint sensing zones to perform a fingerprint sensing operation according to a reference point of a touch area and receive a fingerprint sensing signal corresponding to fingerprint sensing data from the at least one of the fingerprint sensing zones. The fingerprint sensing circuit determines whether to rearrange the fingerprint sensing data according to the number of the fingerprint sensing zones determined to perform the fingerprint sensing operation. In addition, an electronic device and a method for sensing a fingerprint image are also provided.
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公开(公告)号：US10943337B2
公开(公告)日：2021-03-09
申请号：US16427328
申请日：2019-05-30
Applicant: Novatek Microelectronics Corp.
Inventor： Shuyao Wang , Yongchao Li , YuanJia Du
Abstract: An image processing apparatus and method for a high dynamic range effect includes a conversion circuit, a specular detection circuit, and a blending circuit. The conversion circuit converts first pixel data of the current pixel of a current frame to a second pixel data, wherein a luminance of the second pixel data is lower than a luminance of the first pixel data. The specular detection circuit detects a specular degree of the current frame to produce a specular map, wherein the specular map includes a specular degree value of a current pixel. The blending circuit blends the first pixel data and the second pixel data according to the specular degree value of the current pixel to obtain blended pixel data of the current pixel.
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公开(公告)号：US20210067773A1
公开(公告)日：2021-03-04
申请号：US16576748
申请日：2019-09-19
Applicant: Novatek Microelectronics Corp.
IPC: H04N19/117 , H04N19/14 , H04N19/46 , H04N19/70 , H04N19/176
Abstract: A video encoder, a video decoder and a video system are provided. The video encoder performs a video encoding operation on a first video frame stream to generate an encoded stream to the video decoder, wherein the encoded stream contains deblocking filtering information. The video decoder performs a video decoding operation on the encoded stream to generate a second video frame stream. The video decoder determines whether to forcibly perform a deblocking filtering operation on a current block of a current frame of the second video frame stream according to the deblocking filtering information.
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公开(公告)号：US20210065627A1
公开(公告)日：2021-03-04
申请号：US16882540
申请日：2020-05-24
Applicant: NOVATEK Microelectronics Corp.
Inventor： Chun-Yi Chou
IPC: G09G3/3258 , G06F3/041 , G06F3/044 , G09G3/3266 , G09G3/3275
Abstract: The present invention provides a control method for a touch and organic light-emitting diode (OLED) driver, for controlling an OLED touch panel. The OLED touch panel has a dark screen mode and a normal display mode, and includes a cathode layer of OLEDs. The control method includes a plurality of steps, and the steps include applying a first load-free driving (LFD) signal to the cathode layer or controlling the cathode layer to be floating during a touch sensing period in the dark screen mode; and applying a constant voltage to the cathode layer in the normal display mode.
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公开(公告)号：US20210056333A1
公开(公告)日：2021-02-25
申请号：US16851043
申请日：2020-04-16
Applicant: NOVATEK Microelectronics Corp.
Inventor： Huan-Teng Cheng , Wei-Lun Shih , Huang-Chin Tang
IPC: G06K9/00 , G06F3/041 , G06F3/0481 , G06F3/0488
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.
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