公开(公告)号：US10950202B2

公开(公告)日：2021-03-16

申请号：US16601382

申请日：2019-10-14

Applicant: Samsung Display Co., Ltd.

Inventor： Nam-Gon Choi ,  Hoi Sik Moon ,  Jai-Hyun Koh ,  Yoongu Kim ,  Namjae Lim ,  Seung Young Choi ,  JaeSung Bae ,  Taehyeong An ,  Byoung Seok Yoo

IPC: G09G5/10

Abstract: A display apparatus includes a local dimmer, an image compensator, a display panel and a light source. The local dimmer is configured to generate a dimming signal representing a degree of dimming for a light source block based on input image data. The image compensator is configured to determine a grayscale gain based on input grayscale value of the input image data and the dimming signal and to compensate luminance of the input image data based on the grayscale gain. The display panel is configured to display an image based on the compensated input image data. The light source is configured to provide light to the display panel based on the dimming signal.

公开(公告)号：US10789687B2

公开(公告)日：2020-09-29

申请号：US16190463

申请日：2018-11-14

Applicant: Samsung Display Co., Ltd.

Inventor： Nam-Gon Choi ,  Namjae Lim ,  Moonshik Kang ,  Jinpil Kim ,  JaeSung Bae ,  Jaehoon Lee

IPC: G06T5/00 ,  G06T3/40

Abstract: In an image processing method that converts image data into output data by performing tone mapping, an edge of an image represented by the image data is determined, a first tone mapping operation is performed on first image data included in the image data, where the first image data represent a first portion of the image not including the edge, whether a gray level of second image data is within a predetermined gray range is determined, where the second image data represent a second portion of the image including the edge, a second tone mapping operation is performed on the second image data when the gray level of the second image data is within the gray range, and the first tone mapping operation is performed on the second image data when the gray level of the second image data is not within the gray range.