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:
Dec. 02, 2003

Filed:

Aug. 03, 1999
Applicant:
Inventors:

Kiyoshi Kohiyama, Kawasaki, JP;

Yukio Otobe, Kawasaki, JP;

Hidenaga Takahashi, Kawasaki, JP;

Koji Yoshitomi, Kawasaki, JP;

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K 9/46 ;
U.S. Cl.
CPC ...
G06K 9/46 ;
Abstract

A memory control part cyclically assigns time slots to buffer memory parts to respectively and in each time slot, controls access between the corresponding buffer memory part and a synchronous RAM . A time slot is determined while assuming the worst case where access to the synchronous RAM is the severest. Time slot groups of [(the number of pixels on one horizontal scanning line)/256] in number are generated in an imaginary one horizontal scanning period, where [ ] denotes an integer portion of the number in the parentheses. For a buffer memory whose data volume changes depending on a compression factor, a time slot ending point may be made variable, or a time slot may be generated by interrupt as an exception.


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