公开(公告)号：US20210272529A1

公开(公告)日：2021-09-02

申请号：US16805818

申请日：2020-03-01

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chieh-Cheng CHEN ,  Chih-Chia KUO

IPC: G09G3/36

Abstract: A display driver circuit, configured to drive a display panel, includes a time recording circuit, a storage circuit, and an output control circuit. The time recording circuit calculates a first time interval between a first vertical synchronous pulse and a second vertical synchronous pulse subsequent to the first vertical synchronous pulse. The storage circuit stores a display data corresponding to the first vertical synchronous pulse when the first vertical synchronous pulse is received by the display driver circuit. The output control circuit is coupled with the time recording circuit and the storage circuit. When the display driver circuit receives the second vertical synchronous pulse, the output control circuit outputs data pieces, generated by dividing the display data, to the display panel. The data pieces are outputted at second time intervals, and each of the second time intervals is positively correlated with the first time interval.

公开(公告)号：US11094248B2

公开(公告)日：2021-08-17

申请号：US16824712

申请日：2020-03-20

Applicant: Novatek Microelectronics Corp.

Inventor： Sheng-Wen Hsiao

IPC: G09G3/20 ,  G09G3/32

Abstract: An LED driving apparatus for driving an LED array including an output terminal group and a converter group is provided. The output terminal group includes a plurality of output terminals. The converter group includes a plurality of digital-to-analog converters. Each of the digital-to-analog converters outputs a driving current according to pixel data to drive a corresponding one of the LEDs. Each of digital-to-analog converters includes a plurality of sub-driving current generating circuits. The sub-driving current generating circuits are coupled to the corresponding output terminal of the output terminal group. Each of the sub-driving current generating circuits generates a sub-driving current having a current value corresponding to a bit order of a bit of the pixel data. The driving current is generated by summing up the sub-driving currents.

公开(公告)号：US20210200977A1

公开(公告)日：2021-07-01

申请号：US17123134

申请日：2020-12-16

Applicant: Novatek Microelectronics Corp.

Inventor： Jou-Chia Chen ,  Hsing-Lung Chung ,  Ding-Teng Shih ,  Yi-Ting Chung

IPC: G06K9/00 ,  G06F3/041 ,  G06F21/32 ,  G06F21/84

Abstract: A driver integrated circuit for fingerprint sensing, touch sensing and display driving and a driving method thereof are provided. The driver integrated circuit is adapted for driving a touch display panel with a fingerprint sensor. The driver integrated circuit includes a fingerprint sensing control circuit, a display driving circuit, and a display driving circuit. The fingerprint sensing control circuit drives the fingerprint sensor to perform a fingerprint sensing operation. The display driving circuit drives the touch display panel to perform a display operation. The touch sensing control circuit drives the touch display panel to perform a touch operation. The fingerprint sensing control circuit and the display driving circuit have a first direct communication therebetween so as to facilitate at least one of the fingerprint sensing operation and the display operation.

公开(公告)号：US11049471B2

公开(公告)日：2021-06-29

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 display control circuit transforms a plurality of input points of an input image to 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 display control circuit includes a subpixel rendering circuit. The subpixel rendering circuit maps a first row of the input points to the first row of the target subpixels, and maps a second row of the input points 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：US20210191539A1

公开(公告)日：2021-06-24

申请号：US17126049

申请日：2020-12-18

Applicant: Novatek Microelectronics Corp.

Inventor： Yen-Cheng Cheng

IPC: G06F3/044 ,  G06F3/041 ,  H04B1/04

Abstract: The disclosure includes a touch display apparatus having AFE circuit that performs a noise cancellation of an AFE channel by utilizing noise signal received by a neighboring AFE channels. The first AFE channel includes a first integrator having an input terminal coupled to the first terminal receiving a first sensing signal. The second AFE channel includes an input amplifier. The second AFE channel is coupled between the input terminal of the first integrator in the first AFE channel and a second terminal connected to the touch panel. The second AFE channel is configured to generate a reversal input signal based on a second sensing signal received by the second terminal and couple the reversal input signal to a common node between the first integrator and the first terminal.

公开(公告)号：US11037331B1

公开(公告)日：2021-06-15

申请号：US16748461

申请日：2020-01-21

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Cong Zhang ,  Jian-Hua Liang ,  Yuan-Jia Du

IPC: G06K9/46 ,  G06T9/20

Abstract: A method for de-contouring a source image is provided. In the method, a reference image is obtained based on the source image. Multi-oriented gradient calculation is performed on each pixel of the reference image, so as to obtain, for each pixel of the reference image, multiple gradient features that respectively correspond to multiple directions. For each pixel of the reference image, a monotonicity index is determined based on the corresponding gradient features. Then, a detail-protecting and de-contour operation is performed on the source image based on the monotonicity indices determined for the pixels of the reference image.

公开(公告)号：US20210174057A1

公开(公告)日：2021-06-10

申请号：US17113097

申请日：2020-12-06

Applicant: Novatek Microelectronics Corp.

Inventor： Jung-Yu Tsai

IPC: G06K9/00 ,  G06K9/62 ,  G06F3/0488

Abstract: A method for fingerprint recognition and a fingerprint recognition device are provided. The method includes the following steps. A touch position of a touch panel is obtained as a fingerprint position. A fingerprint recognition operation is performed according to the fingerprint position. Whether the fingerprint recognition operation is successful is determined. In response to determining that the fingerprint recognition operation is not successful, at least one first position of the touch panel as an updated fingerprint position is generated according to the touch position of the touch panel, and the fingerprint recognition operation is performed according to the updated fingerprint position.

公开(公告)号：US11032511B1

公开(公告)日：2021-06-08

申请号：US15930417

申请日：2020-05-12

Applicant: NOVATEK Microelectronics Corp.

Inventor： Shuting Ge ,  I-Feng Lin ,  Haibo Liu ,  Xiaohui Li

IPC: H04N7/01

Abstract: A frame interpolation method for a video processor includes the steps of: determining whether a first input frame is received following a long-term cadence; generating interpolated frames by applying phase coefficients in a regular phase table corresponding to the long-term cadence when the first input frame is received following the long-term cadence; and generating interpolated frames by applying phase coefficients in a bad edit phase table corresponding to a bad edit cadence when the first input frame is received without following the long-term cadence.

公开(公告)号：US20210168915A1

公开(公告)日：2021-06-03

申请号：US17172953

申请日：2021-02-10

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Wei-Jen LAI ,  Neng-Chieh HSU ,  Zhen-Guo DING ,  Kang-Fan YEH

IPC: H05B45/325

Abstract: An LED controller is used with a video source and at least one LED unit, and includes a control signal generator and a driver. The control signal generator performs pulse width modulation based on a first clock signal, a second clock signal and a data signal, which is generated by the video source, to generate at least one control signal. The first and second clock signals are independent of a vertical synchronization signal that is generated by the video source. The driver generates, based on the at least one control signal, at least one drive signal that is related to light emission of the at least one LED unit.

公开(公告)号：US11025910B2

公开(公告)日：2021-06-01

申请号：US16576748

申请日：2019-09-19

Applicant: Novatek Microelectronics Corp.

Inventor： Ting Peng ,  Xin Huang

IPC: H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

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.