The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 19, 2016

Filed:

Oct. 14, 2014
Applicants:

Chi Ho Cha, Hwaseong-si, KR;

Sang Kyu Lee, Suwon-si, KR;

Hyun-chul Lee, Seoul, KR;

Jong Seon Kim, Seongnam-si, KR;

Hyo Jin Kim, Hwaseong-si, KR;

Hak-seong Lee, Hwaseong-si, KR;

Seung Jin IN, Yongin-si, KR;

Hyon Jun Choi, Hwaseong-si, KR;

Inventors:

Chi Ho Cha, Hwaseong-si, KR;

Sang Kyu Lee, Suwon-si, KR;

Hyun-Chul Lee, Seoul, KR;

Jong Seon Kim, Seongnam-si, KR;

Hyo Jin Kim, Hwaseong-si, KR;

Hak-Seong Lee, Hwaseong-si, KR;

Seung Jin In, Yongin-si, KR;

Hyon Jun Choi, Hwaseong-si, KR;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 5/46 (2006.01); H04N 5/06 (2006.01); G09G 5/00 (2006.01); G09G 5/12 (2006.01); G09G 5/18 (2006.01); G09G 5/36 (2006.01); G06F 1/32 (2006.01);
U.S. Cl.
CPC ...
G09G 5/006 (2013.01); G06F 1/3265 (2013.01); G09G 5/12 (2013.01); G09G 5/18 (2013.01); G09G 5/36 (2013.01); G09G 2320/103 (2013.01); G09G 2330/021 (2013.01); G09G 2330/12 (2013.01); G09G 2360/10 (2013.01); G09G 2360/18 (2013.01); G09G 2370/04 (2013.01); G09G 2370/10 (2013.01);
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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