公开(公告)号：US20220351700A1

公开(公告)日：2022-11-03

申请号：US17243555

申请日：2021-04-28

Applicant: Novatek Microelectronics Corp.

Inventor： Wen-Chi Lin ,  Chin-Chu Wu ,  Chung-Wen Hung

IPC: G09G5/06 ,  G09G5/10 ,  G06T5/50 ,  G09G5/04

Abstract: The disclosure provides an image uniformity compensation device. The image uniformity compensation device includes a local pre-compensation circuit, a chromaticity uniformity compensation circuit, a local post-compensation circuit, and a luminance uniformity correction circuit. A local pre-conversion performed by the local pre-compensation circuit includes the following. An image frame is divided into multiple regions, and each of the regions is converted from an optical non-linear domain to an optical linear domain to generate a corresponding region in multiple regions of a converted frame. A local post-conversion performed by the local post-compensation circuit includes the following. An image frame is divided into multiple regions, and each of the regions is converted from the optical linear domain to the optical non-linear domain to generate a corresponding region in multiple regions of a converted frame.

公开(公告)号：US11508331B1

公开(公告)日：2022-11-22

申请号：US17243555

申请日：2021-04-28

Applicant: Novatek Microelectronics Corp.

Inventor： Wen-Chi Lin ,  Chin-Chu Wu ,  Chung-Wen Hung

IPC: G09G5/02 ,  G09G5/06 ,  G09G5/10 ,  G09G3/20 ,  G09G3/32 ,  G09G5/04 ,  G06T11/00 ,  G06T5/50 ,  H04N1/60 ,  H04N5/365 ,  H04N9/64 ,  H04N19/85

Abstract: The disclosure provides an image uniformity compensation device. The image uniformity compensation device includes a local pre-compensation circuit, a chromaticity uniformity compensation circuit, a local post-compensation circuit, and a luminance uniformity correction circuit. A local pre-conversion performed by the local pre-compensation circuit includes the following. An image frame is divided into multiple regions, and each of the regions is converted from an optical non-linear domain to an optical linear domain to generate a corresponding region in multiple regions of a converted frame. A local post-conversion performed by the local post-compensation circuit includes the following. An image frame is divided into multiple regions, and each of the regions is converted from the optical linear domain to the optical non-linear domain to generate a corresponding region in multiple regions of a converted frame.