公开(公告)号：US20220322509A1

公开(公告)日：2022-10-06

申请号：US17218068

申请日：2021-03-30

Applicant: Novatek Microelectronics Corp.

Inventor： Jen-Chung Chang ,  Yi-Nung Hu

IPC: H05B45/325

Abstract: A pulse width modulation (PWM) driver and an operation method thereof are provided. The PWM driver includes a PWM generating circuit and multiple driving channels. The PWM generating circuit generates multiple PWM signals. The driving channels drive multiple light emitting elements of a light emitting element array. Each of the driving channels includes a PWM selection circuit. The PWM selection circuits are coupled to the PWM generating circuit to receive the PWM signals. Each of the PWM selection circuits selects a PWM signal from the PWM signals according to corresponding sub-pixel data. The selected PWM signal is output to at least one corresponding light emitting element among the light emitting elements.

公开(公告)号：US20220317965A1

公开(公告)日：2022-10-06

申请号：US17216701

申请日：2021-03-30

Applicant: Novatek Microelectronics Corp.

Inventor： Wen-Chi Lin ,  Yuan-Yung Liao ,  Chung-Wen Wu ,  Chi-Han Lee ,  Jiun-Yi Lin ,  Po-Jui Huang ,  Chung-Wen Hung

IPC: G06F3/14 ,  F21V23/00 ,  G09G5/00

Abstract: The disclosure provides a light cabinet, including multiple light boards and multiple light-board controllers. The light boards form a first light-board array of the light cabinet. The light-board controllers are arranged one-to-one on the light boards. The light-board controllers of the light boards in a first column of the first light-board array are connected in series to form a first controller string. The output terminal of the first controller string is connected electrically to an input terminal of a second controller string in a corresponding column of a second light-board array of another light cabinet. The input terminal of the first controller string is connected electrically to a first output terminal of a video data splitter (or an output terminal of a third controller string in a corresponding column of a third light-board array of yet another light cabinet).

公开(公告)号：US11461888B2

公开(公告)日：2022-10-04

申请号：US16933979

申请日：2020-07-20

Applicant: Novatek Microelectronics Corp.

Inventor： Li-Chieh Chen ,  Yen-Tao Liao

IPC: G06T7/00

Abstract: The disclosure provides a method and an image processor for computing decay factors for display degradation compensation. The method includes the following steps. A sequence of frames including a current frame are received. Whether the current frame is a dynamic frame or a static frame is determined. When the current frame is the dynamic frame, accumulation on decay factors is performed. When the current frame is the static frame, accumulation on the decay factors is not performed.

公开(公告)号：US11443546B1

公开(公告)日：2022-09-13

申请号：US17233570

申请日：2021-04-19

Applicant: NOVATEK Microelectronics Corp.

Inventor： Min Huang

IPC: G06V40/13 ,  G06F21/32 ,  G06V40/12 ,  G06F3/041

Abstract: A fingerprint sensing signal correction method for a fingerprint sensing signal correction device including a plurality of fingerprint sensors integrated inside of a display panel of an electronic device is disclosed. The method includes obtaining a plurality of environmental voltages of the display panel during a pre-scanning mode; generating a plurality of correction voltages associated with the plurality of environmental voltages during a signal processing mode; and canceling the plurality of environmental voltages from a plurality of amplified sensing voltages to generate a plurality of corrected sensing voltages during a normal mode.

公开(公告)号：US20220262320A1

公开(公告)日：2022-08-18

申请号：US17673807

申请日：2022-02-17

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chieh-Hsiang Chang

IPC: G09G3/3291

Abstract: A method for a display driver circuit configured to drive a display panel includes steps of: determining whether a plurality of first data codes corresponding to first data voltages to be output through a multiplexer to data lines in the display panel during a first horizontal line period equal; determining whether each of the first data codes equals a corresponding second data code among a plurality of second data codes corresponding to second data voltages to be output through the multiplexer to the data lines during a second horizontal line period immediately after the first horizontal line period; and in response to that the first data codes equal and each of the first data codes equal the corresponding second data code, outputting a control signal to keep a switch of the multiplexer staying in a turn-on state after the switch is turned on for outputting a first data voltage.

公开(公告)号：US20220254305A1

公开(公告)日：2022-08-11

申请号：US17721337

申请日：2022-04-14

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 data signal and outputs a first data signal, the Nth stage LED driver receives a (N−1)th data signal and outputs a Nth 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 the (N−1)th data signal; and a first transmitter outputting the Nth data signal according to the recovery clock signal and the recovery data signal.

公开(公告)号：US11373391B2

公开(公告)日：2022-06-28

申请号：US16984159

申请日：2020-08-04

Applicant: Novatek Microelectronics Corp.

Inventor： Hung-Chang Chuang ,  Chaohsu Hsu

IPC: G06T5/00 ,  G06V10/30 ,  G06V10/56 ,  G06V20/52

Abstract: An image processing device determining image adjustment parameters in real time so as to facilitate modifying the image adjustment parameters includes an image input device acquiring an original image signal and output a first image signal; a parameter adjustment device modifying image adjustment parameters; an image processing circuit receiving the first image signal and the image adjustment parameters and adjusting the first image signal according to the image adjustment parameters to output a second image signal; an information label circuit coupling to the image processing circuit and receiving the second image signal and internal information of the image processing circuit and labeling at least one part of the second image signal according to the internal information to generate a labeled output image; and an image output device coupling to the information label circuit and outputting the labeled output image having at least one label indicating the internal information.

公开(公告)号：US11366544B2

公开(公告)日：2022-06-21

申请号：US16882740

申请日：2020-05-25

Applicant: Novatek Microelectronics Corp.

Inventor： Yen-Cheng Cheng

IPC: G06F3/041 ,  G06F3/044

Abstract: A driver chip including a receiving structure, a shielding structure, and a touch control circuit is provided. The receiving structure can receive a touch sensing signal. The shielding structure can be disposed aside the receiving structure. The shielding structure can shield at least one parasitic capacitor coupled to the receiving structure. The touch control circuit can be connected to the receiving structure and configured to receive the touch sensing signal. An electronic device including a driver chip is also provided.

公开(公告)号：US20220189196A1

公开(公告)日：2022-06-16

申请号：US17548602

申请日：2021-12-13

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： WEILUN SHIH ,  WU-WEI LIN

IPC: G06V40/12 ,  G06F3/041 ,  G06V10/22

Abstract: A method and device of fingerprint image generation for saving memory. The method includes generating a first fingerprint image of an original data size according to a plurality of first analog sensing signals which are read from a fingerprint sensor array before an exposure period ends. Then the first fingerprint image represented by a first data size which is equivalent to or smaller than the original data size is stored. a second fingerprint image of the original data size is generated after generating the first fingerprint image of the original data size according to a plurality of second analog sensing signals which are read from the fingerprint sensor array during the exposure period. The second fingerprint image represented by a compressed data size smaller than the original data size is then stored.

公开(公告)号：US11355088B2

公开(公告)日：2022-06-07

申请号：US16817619

申请日：2020-03-13

Applicant: Novatek Microelectronics Corp.

Inventor： Chia-Hsin Tung

IPC: G09G5/36 ,  G06T13/80

Abstract: A display driver device including a driver circuit and a control circuit is provided. The driver circuit is configured to drive a display panel to display an animated image for a display period under an always on display mode according to display information of the animated image stored in a storage circuit. The display period includes a writing period and a non-writing period after the writing period. The control circuit is configured to write the display information of the animated image received from an external device into the storage circuit during the writing period of the display period. The control circuit is configured to stop receiving the display information from the external device and writing any display information into the storage circuit during the non-writing period of the display period. A display device including the display driver device and an operating method for the display driver device are also provided.