公开(公告)号：US11935452B2

公开(公告)日：2024-03-19

申请号：US18170541

申请日：2023-02-17

Applicant: Novatek Microelectronics Corp.

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

IPC: G06V40/13 ,  G06F3/041 ,  G09G3/20

CPC classification number: G09G3/20 ,  G06F3/0412 ,  G06V40/13 ,  G06V40/1318 ,  G09G2310/0272

Abstract: An electronic circuit for operating with a display panel including touch sensors and fingerprint sensors is provided. The electronic circuit includes a first circuit, a second circuit, a third 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 third circuit determines a touch information according to touch sensing signals from the touch sensors. The first switch circuit includes a plurality of first switch units, each of the first switch units includes a first switch element and a second switch element. The control circuit controls the first switch circuit to transmit the display driving signals in a first time interval, controls the first switch circuit to transmit the fingerprint sensing signals in a second time interval, and controls the third circuit to receive the fingerprint sensing signals in a third time interval.

公开(公告)号：US20240087356A1

公开(公告)日：2024-03-14

申请号：US18510688

申请日：2023-11-16

Applicant: Novatek Microelectronics Corp.

Inventor： Cho-Hsuan Jhang ,  Chao-Yu Meng ,  Shih-Cheng Chen ,  Chih-Peng Hsia

IPC: G06V40/13 ,  H04N23/57

CPC classification number: G06V40/1312 ,  G06V40/1306 ,  H04N23/57

Abstract: A display apparatus and an fingerprint sensing method thereof are provided. A display panel of the display apparatus has a pixel circuit array, an in-display touch sensor array, and an in-display fingerprint sensor array. A driving circuit drives the in-display fingerprint sensor array to read a fingerprint image. A current display frame period is divided into a plurality of unit periods, each of the unit periods includes at least one fingerprint sensing period and one or both of a display driving period and a touch sensing period. The driving circuit resets a current fingerprint sensor in the in-display fingerprint sensor array during a first fingerprint sensing period among these fingerprint sensing periods of the first display frame period. The driving circuit reads a sensing result of the current fingerprint sensor during a second fingerprint sensing period succeeding to the first fingerprint sensing period.

公开(公告)号：US11929043B1

公开(公告)日：2024-03-12

申请号：US17976893

申请日：2022-10-31

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chun-Hsiang Wang

IPC: G09G3/34 ,  G06F3/041

CPC classification number: G09G3/3426 ,  G09G2320/0626 ,  G09G2320/0646

Abstract: A detection circuit is used for a display controller configured to generate a plurality of backlight data according to a plurality of image data. The detection circuit includes a resize circuit and a comparison circuit. The resize circuit is configured to receive the plurality of image data and convert the plurality of image data into a plurality of region data. The comparison circuit, coupled to the resize circuit, is configured to: receive at least one first region data from the resize circuit; receive at least one first backlight data corresponding to the at least one first region data from the display controller; compare the at least one first region data with the at least one first backlight data to generate a comparison result; and output a control signal to control an output setting of the display controller according to the comparison result.

公开(公告)号：US11928295B2

公开(公告)日：2024-03-12

申请号：US17805466

申请日：2022-06-05

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chung-Cher Lin ,  Yun-Hsiang Yeh ,  Ta-Keng Weng

IPC: G06F3/044 ,  G06F3/01 ,  G06F3/041

CPC classification number: G06F3/0442 ,  G06F3/016 ,  G06F3/0416 ,  G06F3/0441 ,  G06F2203/04112

Abstract: A data transmission method includes: transmitting a plurality of first transmitting signals from a plurality of transmitting areas of the first touch device; determining, by the second touch device, whether a first sensing signal corresponding to the plurality of first transmitting signals is received; if yes selecting, by the second touch device, a receiving area in a first overlap range according to signal intensity of the first sensing signal; transmitting a second transmitting signal from the receiving area; determining, by the first touch device, whether a second sensing signal corresponding to the second transmitting signal is received; if yes, selecting, by the first touch device, a first transmitting area in a second overlap range from the plurality of transmitting areas according to signal intensity of the second sensing signal; determining a final transmitting area and a final receiving area; and performing a data transmission process.

公开(公告)号：US20240078969A1

公开(公告)日：2024-03-07

申请号：US18235891

申请日：2023-08-21

Applicant: NOVATEK Microelectronics Corp.

Inventor： Xuan-Yong Lin ,  Shang-Yu Su ,  Feng-Ting Pai

IPC: G09G3/3208 ,  G06T3/40 ,  G06T5/50 ,  G09G3/20

CPC classification number: G09G3/3208 ,  G06T3/40 ,  G06T5/50 ,  G09G3/2007 ,  G09G2320/0257 ,  G09G2340/02 ,  G09G2340/16 ,  G09G2360/12 ,  G09G2360/16

Abstract: An image processing circuit includes a receiver, at least one memory, a recognition circuit, a calculation circuit and a compensation circuit. The receiver is configured to receive a current image frame and a plurality of previous image frames. The at least one memory is configured to store the plurality of previous image frames. The recognition circuit is configured to select a first previous image frame or a second previous image frame among the plurality of previous image frames from the at least one memory. The calculation circuit is configured to calculate a compensation value for the current image frame according to at least one of the first previous image frame and the second previous image frame by referring to a lookup table (LUT). The compensation circuit is configured to modify a current image data of the current image frame by using the compensation value.

公开(公告)号：US11915666B2

公开(公告)日：2024-02-27

申请号：US17746988

申请日：2022-05-18

Applicant: Novatek Microelectronics Corp.

Inventor： Jung-Hsuan Sung ,  Kai-Wen Shao ,  Chien-Yu Chen

IPC: G09G3/3275 ,  G09G3/20 ,  G09G5/00

CPC classification number: G09G5/008 ,  G09G3/2096 ,  G09G3/3275 ,  G09G2310/0264 ,  G09G2320/04

Abstract: A display device, a display driving integrated circuit (DDIC), and an operation method are provided. The display device includes a display panel, a first DDIC, and a second DDIC. The first DDIC generates a display synchronization signal, and drives a first display area of a display panel according to the display synchronization signal. The second DDIC is coupled to the first DDIC to receive the display synchronization signal. The second DDIC performs a frequency tracking operation on an internal clock signal of the second DDIC by selectively using the display synchronization signal. The second DDIC drives a second display area of the display panel according to the internal clock signal and the display synchronization signal.

公开(公告)号：US11906355B1

公开(公告)日：2024-02-20

申请号：US18162687

申请日：2023-01-31

Applicant: Novatek Microelectronics Corp.

Inventor： Yu-Ying Tang ,  Yao Chung Chang ,  Chih-Chang Lai

IPC: G06V40/13 ,  G06F3/041 ,  G01J1/44 ,  G01J1/42 ,  H10K39/34 ,  G02F1/1333 ,  G02F1/1335 ,  H10K59/80 ,  H10K59/125

CPC classification number: G01J1/44 ,  G01J1/4204 ,  G02F1/13338 ,  G02F1/133512 ,  G06F3/0412 ,  G06V40/1318 ,  H10K39/34 ,  H10K59/8792 ,  G01J2001/446 ,  G01J2001/448 ,  H10K59/125

Abstract: An in-cell optical sensing display panel includes a pixel array, a plurality of first optical sensors and a plurality of second optical sensors. The pixel array is disposed in an active area of the in-cell optical sensing display panel, and the active area includes a first region and a second region which surrounds the first region. The sensor array is disposed in the first region of the active area and is configured to sense a fingerprint of a finger touching a surface of the in-cell optical sensing display panel. The second optical sensors are disposed in the second region of the active area and are configured to sense ambient light, and the second optical sensors are not to be used for fingerprint sensing.

公开(公告)号：US11889057B2

公开(公告)日：2024-01-30

申请号：US17585569

申请日：2022-01-27

Applicant: NOVATEK Microelectronics Corp.

Inventor： Yu-Min Wang

IPC: H04N19/172 ,  H04N19/177 ,  H04N19/105 ,  H04N19/159

CPC classification number: H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/177

Abstract: A method for a video encoder includes steps of: receiving a series of input frames; performing at least one of intra-prediction and inter-prediction on the series of input frames for generating at least one of an intra frame (I-frame), a predictive frame (P-frame), and a key predictive frame (key P-frame); generating an encoded bitstream with respect to a first input frame determined as the I-frame among the series of input frames; and performing inter-prediction on a second input frame determined as a key P-frame among the series of input frames according to a first reference frame which is derived from the encoded bitstream with respect to the first input frame.

公开(公告)号：US20240019965A1

公开(公告)日：2024-01-18

申请号：US17813041

申请日：2022-07-17

Applicant: NOVATEK Microelectronics Corp.

Inventor： Yu-Huang CHEN ,  Ting-Yu CHAN

IPC: G06F3/041

CPC classification number: G06F3/04186 ,  G06F3/04166

Abstract: A touch sensing method for a touch panel includes following operations: entering a first touch sensing process and performing a non-water mode; determining whether there is water on the touch panel in the first touch sensing process; entering a second touch sensing process and performing a water mode when there is water detected on the touch panel in the first touch sensing process; determining whether there is water on the touch panel in the second touch sensing process; and entering the first touch sensing process and performing the non-water mode when there is no water detected on the touch panel in the second touch sensing process.

公开(公告)号：US11871146B1

公开(公告)日：2024-01-09

申请号：US17889368

申请日：2022-08-16

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chih Chang ,  I-Feng Lin ,  Hsiao-En Chang

IPC: G06F5/00 ,  H04N7/01

CPC classification number: H04N7/0135

Abstract: A video processor is configured to perform the following steps: receiving a series of input frames; calculating a buffer stage value according to the series of input frames, wherein the buffer stage value corresponds to a status of the input frames stored in a frame buffer of the video processor; and selecting a frame set from the input frames stored in the frame buffer for generating an interpolated frame as an output frame to be output by the video processor according to the buffer stage value.