公开(公告)号：US20210049952A1

公开(公告)日：2021-02-18

申请号：US16841686

申请日：2020-04-07

Applicant: Novatek Microelectronics Corp.

Inventor： Che-Wei Yeh ,  Keko-Chun Liang ,  Yu-Hsiang Wang ,  Yong-Ren Fang ,  Yi-Chuan Liu

IPC: G09G3/32

Abstract: A LED driving apparatus with clock embedded cascaded LED drivers is introduced, including: a plurality of LED drivers, wherein the first stage LED driver receives an original display data signal and outputs a first display data signal, the Nth stage LED driver receives a (N−1)th display data signal and outputs a Nth display data signal. The Nth stage LED driver includes a clock data recovery circuit generating a recovery clock signal and a recovery data signal according to a first phase difference between the (N−1)th display data signal and the recovery clock signal; and a first transmitter outputting the Nth display data signal according to the recovery clock signal and the recovery data signal.

公开(公告)号：US10924741B2

公开(公告)日：2021-02-16

申请号：US16384907

申请日：2019-04-15

Applicant: NOVATEK Microelectronics Corp.

Inventor： Fandi Jou

IPC: H04N19/89 ,  H04N19/176 ,  H04N19/126 ,  H04N19/139 ,  H04N19/189

Abstract: A method of determining quantization parameters includes the steps of: receiving a block of image data; calculating a general variance of the block of image data; calculating a plane-based variance of the block of image data by subtracting an image moment of the block of image data from the general variance; and determining a quantization parameter for the block of image data according to the plane-based variance.

公开(公告)号：US20210035526A1

公开(公告)日：2021-02-04

申请号：US16524264

申请日：2019-07-29

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Jun-Yu YANG ,  Shang-Yu SU ,  Feng-Ting PAI

IPC: G09G5/02

Abstract: A coordinate mapping method is applied to a plurality of input points of an input image and a plurality of target subpixels of a display panel. In the display panel, a first row of the target subpixels and a second row of the target subpixels are non-aligned in a vertical direction. The coordinate mapping includes the following steps. A first row of the input points are mapped to the first row of the target subpixels, and a second row of the input points are mapped to the second row of the target subpixels. The coordinates of the first row of the input points are respectively equivalent to the coordinates of the first row of the target subpixels. The coordinates of the second row of the input points are respectively equivalent to the coordinates of the second row of the target subpixels being shifted in a horizontal direction.

公开(公告)号：US20210035498A1

公开(公告)日：2021-02-04

申请号：US16526992

申请日：2019-07-30

Applicant: Novatek Microelectronics Corp.

Inventor： Hua-Gang Chang

IPC: G09G3/3233

Abstract: A panel control device and an operation method thereof are provided. The panel control device includes a display port and a control circuit. The display port receives video data from a former stage device. The control circuit performs an anti-burn-in process on the video data according to a processing degree. After the former stage device issues a panel self-refresh entering command to the panel control device, the panel control device enters a panel self-refresh mode, and the control circuit increases the processing degree according to the panel self-refresh entering command, so as to perform the anti-burn-in process on the video data according to the increased processing degree.

公开(公告)号：US20210034833A1

公开(公告)日：2021-02-04

申请号：US16933952

申请日：2020-07-20

Applicant: Novatek Microelectronics Corp.

Inventor： Huan-Teng Cheng ,  Ting-Hsuan Hung ,  Tzu-Wen Hsieh ,  Wei-Lun Shih ,  Huang-Chin Tang

IPC: G06K9/00 ,  G09G3/20 ,  G06F3/041

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.

公开(公告)号：US10909940B2

公开(公告)日：2021-02-02

申请号：US16223129

申请日：2018-12-18

Applicant: NOVATEK Microelectronics Corp.

Inventor： Feng-Ting Pai ,  Jun-Yu Yang

IPC: G09G3/36 ,  G02F1/01 ,  G02F1/13357 ,  G09G3/20 ,  G02F1/1345

Abstract: A method of handling overdrive for image data includes the steps of: receiving a current image data and a previous image data; obtaining an overdrive image data by finding an overdrive lookup table according to the current image data and the previous image data; generating a weighting mask comprising a plurality of weighting parameters; calculating an output image data by combining the overdrive image data with the current image data according to one of the weighting parameters corresponding to a pixel of the current image data; and outputting the output image data to the pixel.

公开(公告)号：US10909348B2

公开(公告)日：2021-02-02

申请号：US16396756

申请日：2019-04-28

Applicant: Novatek Microelectronics Corp.

Inventor： Li-Wei Lin ,  Ding-Teng Shih ,  Fan-Wei Kuo

IPC: G06K9/00 ,  G06K9/03

Abstract: An optical fingerprint sensing device and an operation method thereof are provided. The optical fingerprint sensing device includes an optical fingerprint sensing circuit, an image superimposing circuit and a fingerprint matching circuit. The optical fingerprint sensing circuit is configured to capture an original image of the fingerprint. The image superimposing circuit is coupled to the optical fingerprint sensing circuit. The image superimposing circuit is configured to collect the original image of the fingerprint to obtain a plurality of original fingerprint images. The image superimposing circuit superimposes the original fingerprint images according to at least one superimposition parameter to obtain a superimposed fingerprint image. The fingerprint matching circuit is coupled to the image superimposing circuit to receive the superimposed fingerprint image. The fingerprint matching circuit performs fingerprint matching on the superimposed fingerprint image.

公开(公告)号：US20210027721A1

公开(公告)日：2021-01-28

申请号：US16522660

申请日：2019-07-26

Applicant: Novatek Microelectronics Corp.

Inventor： Cheng-Tsu Hsieh

IPC: G09G3/34

Abstract: A display apparatus includes at least one source driver and a display panel having a display area and a non-display area, in which the display area includes a first array of transistors and the non-display area includes a second array of transistors. The at least one source driver is coupled to a first side of the display area and is configured to drive the first array of transistors. The second array of transistors are coupled to a second side of the display area of the display panel and is configured to perform a first pre-charge operation on a plurality of odd-number channels of the display panel and perform a second pre-charge operation on a plurality of even-numbered channels of the display panel through the second side of the display area. The first side of the display area is opposite to the second side of the display area.

公开(公告)号：US10902816B2

公开(公告)日：2021-01-26

申请号：US15787710

申请日：2017-10-19

Applicant: Novatek Microelectronics Corp.

Inventor： Yu-Shao Liu

IPC: G09G3/36 ,  G09G3/20 ,  G09G5/00 ,  H03K19/0175

Abstract: A driving integrated circuit (IC) and a fan-out compensation method thereof are provided. The driving IC includes a plurality of driving channel circuits, a plurality of output buffer circuits and a compensation control circuit. The input terminals of the output buffer circuits are coupled to the output terminals of the driving channel circuits in a one-to-one manner. The output terminals of the output buffer circuits are coupled a plurality of data lines of a display panel in a one-to-one manner. The compensation control circuit is coupled to the output buffer circuits for adjusting the slew rate of the output terminals of the output buffer circuits to compensate difference in delay times between the data lines of the display panel.

公开(公告)号：US20210011601A1

公开(公告)日：2021-01-14

申请号：US16510541

申请日：2019-07-12

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Jiun-Jie TSAI ,  He-Wei HUANG

IPC: G06F3/041 ,  G06F3/0354 ,  G06F1/3218

Abstract: A method of using an active pen to wake a computer device from a power-saving mode is provided. The computer device includes a detecting apparatus, a processor, and a touch screen display panel. When the computer device is in a power-saving mode, the detecting apparatus continuously detects presence of the active pen within an effective detecting range with respect to the touch screen display panel. The detecting apparatus transmits a wakeup signal to the processor to wake the computer device when the detection circuit detects that the active pen is within the effective detecting range.