Invention Grant
US08878995B2 Display driver, operating method thereof, host for controlling the display driver, and system having the display driver and the host
有权
显示驱动器,其操作方法,用于控制显示驱动器的主机,以及具有显示驱动器和主机的系统
- Patent Title: Display driver, operating method thereof, host for controlling the display driver, and system having the display driver and the host
- Patent Title (中): 显示驱动器,其操作方法,用于控制显示驱动器的主机,以及具有显示驱动器和主机的系统
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Application No.: US13601678Application Date: 2012-08-31
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Publication No.: US08878995B2Publication Date: 2014-11-04
- Inventor: Chi Ho Cha , Sang Kyu Lee , Hyun-Chul Lee , Jong Seon Kim , Hyo Jin Kim , Hak-Seong Lee , Seung Jin In , Hyon Jun Choi
- Applicant: Chi Ho Cha , Sang Kyu Lee , Hyun-Chul Lee , Jong Seon Kim , Hyo Jin Kim , Hak-Seong Lee , Seung Jin In , Hyon Jun Choi
- Applicant Address: KR Gyeonggi-Do
- Assignee: Samsung Electronics Co., Ltd
- Current Assignee: Samsung Electronics Co., Ltd
- Current Assignee Address: KR Gyeonggi-Do
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: KR10-2011-0089009 20110902; KR10-2011-0100727 20111004
- Main IPC: H04N5/46
- IPC: H04N5/46 ; H04N3/27 ; G09G5/12 ; G09G5/36 ; G09G5/18 ; G09G5/00

Abstract:
An operation method of a display driver includes generating a count value by counting a period of a synchronization signal related to a synchronization packet received from a host, receiving a mode change command from the host, the mode change command indicating a change from a video mode transmitting first image data to a display by bypassing a frame memory to a command mode transmitting second image data to the display through the frame memory, and generating an internal synchronization signal having a period substantially equal to the period of the synchronization signal by using the count value based on the mode change command after a last pulse of the synchronization signal is generated. A time interval between the last pulse and a first pulse of the internal synchronization signal is equal to the period of the synchronization signal.
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