公开(公告)号：US10937489B2

公开(公告)日：2021-03-02

申请号：US16747559

申请日：2020-01-21

Applicant: Novatek Microelectronics Corp.

Inventor： Pin-Han Su ,  Jen-Hao Liao

IPC: G11C11/41 ,  G11C11/419 ,  G11C7/12 ,  G11C11/4091

Abstract: A pre-charge circuit of a static random access memory (SRAM) controller and a pre-charging method thereof are provided. The pre-charge circuit of the SRAM controller includes a first switch, a second switch and a third switch. A first terminal of the first switch is coupled to a working voltage, a second terminal of the first switch is coupled to a first bit line of the SRAM controller, and the first switch is controlled by a first turn-on signal. A first terminal of the second switch is coupled to the working voltage, a second terminal of the second switch is coupled to a second bit line of the SRAM controller, and the second switch is controlled by a second turn-on signal. The third switch is coupled between the first bit line and the second bit line, and the third switch is controlled by a third turn-on signal. In a pre-charge mode, a time point at which the third switch is turned on is earlier than a time point at which the first switch is turned on and earlier than a time point at which the second switch is turned on.

公开(公告)号：US20210056280A1

公开(公告)日：2021-02-25

申请号：US16865404

申请日：2020-05-03

Applicant: NOVATEK Microelectronics Corp.

Inventor： Huan-Teng Cheng ,  Wei-Lun Shih ,  Huang-Chin Tang

IPC: G06K9/00 ,  G06F3/0481 ,  G09G5/10 ,  G06F3/0488 ,  G06F3/041 ,  G06K9/20

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.

公开(公告)号：US10929958B1

公开(公告)日：2021-02-23

申请号：US16684606

申请日：2019-11-15

Applicant: Novatek Microelectronics Corp.

Inventor： Wan-Ching Tsai ,  Shu-Chun Lin

IPC: G06T5/00 ,  G06T5/20

Abstract: A method and an image processing device for image enhancement are proposed. The method includes the following steps. An input image is received. A curve set is applied on the input image to generate a resultant image, where the curve set includes a plurality pairs of weight functions and process functions, where a summation of a multiplication of the weight function and the process function in each of the pairs is zero, and where the weight function in each of the pairs is associated with low-pass filtering. An output image is generated according to the resultant image and the input image.

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.