公开(公告)号：US11978410B2

公开(公告)日：2024-05-07

申请号：US17847199

申请日：2022-06-23

Applicant: NOVATEK Microelectronics Corp.

Inventor： Po-Hsiang Huang ,  Chung-Wen Wu ,  Jiun-Yi Lin ,  Wen-Chi Lin

IPC: G09G3/34 ,  G09G3/36

CPC classification number: G09G3/342 ,  G09G3/3648 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0257

Abstract: A method of backlight control for a display panel is provided. The display panel is configured to display with a variable refresh rate in a plurality of frame periods each having a fixed period and a variable period. The method includes steps of: generating a first backlight control signal in the fixed period of a frame period; determining whether a liquid crystal (LC) transition time corresponding to the frame period ends before an end time of the variable period of the frame period; generating a second backlight control signal in the variable period of the frame period when the LC transition time ends before the end time of the variable period of the frame period; and generating a compensation backlight control signal in a next frame period according to a backlight duty cycle of the frame period.

公开(公告)号：US20220343871A1

公开(公告)日：2022-10-27

申请号：US17242278

申请日：2021-04-27

Applicant: Novatek Microelectronics Corp.

Inventor： Po-Hsiang Huang ,  Chia-Hsing Hou ,  Yu-Lin Cheng ,  Chung-Wen Wu

IPC: G09G3/36

Abstract: The disclosure provides a display equipment, a brightness compensation device, and a brightness compensation method. The brightness compensation device includes a variable refresh rate (VRR) detection circuit and a control circuit. The VRR detection circuit and the control circuit receive a video stream from a video source device, and the video stream includes a VRR video frame. The VRR detection circuit detects a blanking period of the VRR video frame and generates a detection result. The control circuit outputs the frame data of the VRR video frame to the display device during the valid data period of the VRR video frame. The control circuit repeatedly outputs the frame data of the VRR video frame to the display device during the blanking period of the VRR video frame according to the detection result until the blanking period ends.

公开(公告)号：US20230419915A1

公开(公告)日：2023-12-28

申请号：US17847199

申请日：2022-06-23

Applicant: NOVATEK Microelectronics Corp.

Inventor： Po-Hsiang Huang ,  Chung-Wen Wu ,  Jiun-Yi Lin ,  Wen-Chi Lin

IPC: G09G3/34 ,  G09G3/36

CPC classification number: G09G3/342 ,  G09G3/3648 ,  G09G2310/08 ,  G09G2320/0257 ,  G09G2320/0233

Abstract: A method of backlight control for a display panel is provided. The display panel is configured to display with a variable refresh rate in a plurality of frame periods each having a fixed period and a variable period. The method includes steps of: generating a first backlight control signal in the fixed period of a frame period; determining whether a liquid crystal (LC) transition time corresponding to the frame period ends before an end time of the variable period of the frame period; generating a second backlight control signal in the variable period of the frame period when the LC transition time ends before the end time of the variable period of the frame period; and generating a compensation backlight control signal in a next frame period according to a backlight duty cycle of the frame period.

公开(公告)号：US11804195B2

公开(公告)日：2023-10-31

申请号：US17242278

申请日：2021-04-27

Applicant: Novatek Microelectronics Corp.

Inventor： Po-Hsiang Huang ,  Chia-Hsing Hou ,  Yu-Lin Cheng ,  Chung-Wen Wu

IPC: G09G3/36

CPC classification number: G09G3/3618 ,  G09G2310/0291 ,  G09G2310/061 ,  G09G2310/08 ,  G09G2320/064 ,  G09G2360/18

Abstract: The disclosure provides a display equipment, a brightness compensation device, and a brightness compensation method. The brightness compensation device includes a variable refresh rate (VRR) detection circuit and a control circuit. The VRR detection circuit and the control circuit receive a video stream from a video source device, and the video stream includes a VRR video frame. The VRR detection circuit detects a blanking period of the VRR video frame and generates a detection result. The control circuit outputs the frame data of the VRR video frame to the display device during the valid data period of the VRR video frame. The control circuit repeatedly outputs the frame data of the VRR video frame to the display device during the blanking period of the VRR video frame according to the detection result until the blanking period ends.

公开(公告)号：US11410592B1

公开(公告)日：2022-08-09

申请号：US17179918

申请日：2021-02-19

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Hsin-Tso Chiang ,  Tsun-Hou Chou ,  Po-Hsiang Huang

IPC: G09G5/00 ,  G09G3/20 ,  A63F13/837

Abstract: A display method and a display device using the same is disclosed. In the display method, an image is received. The image has an indicative object and a display background that surrounds the indicative object. Then, the original color of the indicative object is changed into a first color and the image that has the indicative object with the first color is displayed based on the average hue of a part of the display background. The part of the display background surrounds the indicative object. The average hue corresponds to a second color. The first color and the second color are complementary colors.