公开(公告)号：US11151924B2

公开(公告)日：2021-10-19

申请号：US16828726

申请日：2020-03-24

Applicant: Samsung Display Co., Ltd.

Inventor： Jinyoung Roh ,  Sangan Kwon ,  Sehyuk Park ,  Hyo Jin Lee ,  HongSoo Kim ,  Sukhun Lee

IPC: G09G5/393 ,  G09G3/20

Abstract: A display driver includes a still image detector configured to receive a compressed image bitstream at an input frame frequency from a host processor, and to detect a still image by comparing the compressed image bitstream of a current frame and the compressed image bitstream of a previous frame, a driving frequency changer configured to output the compressed image bitstream at a first output frame frequency equal to the input frame frequency when the still image is not detected, and to output the compressed image bitstream at a second output frame frequency lower than the input frame frequency when the still image is detected, and a decoder configured to generate original image data at the first output frame frequency and the second output frame frequency.