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:
Sep. 27, 2005

Filed:

Jan. 24, 2002
Applicants:

Kazuaki Sakamoto, Tokyo, JP;

Masatoshi Abe, Kanagawa, JP;

Inventors:

Kazuaki Sakamoto, Tokyo, JP;

Masatoshi Abe, Kanagawa, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G003/36 ;
U.S. Cl.
CPC ...
Abstract

When a communication speed of CPUcan be increased, a procedure of automatic phase adjustment involves setting phase shift amount CLK_DLY=n immediately after a vertical synchronization signal interrupt is generated, and reading video detection data VIDEO_DATA(n) after setting phase shift amount CLK_DLY=n+1 when the next vertical synchronization signal interrupt is generated. When CPUis limited in the communication speed, the automatic adjustment is performed by an automatic adjusting circuit which has phase control data memory, video detection data memory, and a trigger input served by vertical synchronization signal S


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