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:
Feb. 10, 1998

Filed:

Apr. 19, 1995
Applicant:
Inventor:

Masahiro Ishiwata, Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ; G06F / ;
U.S. Cl.
CPC ...
395307 ; 395114 ; 395526 ; 395851 ; 395885 ; 3642403 ; 3642405 ;
Abstract

In an image input/output control apparatus having three lines of n-bit bidirectional data buses provided on an external apparatus connection side of the apparatus and four lines of n-bit bidirectional data buses provided on an image memory side of the apparatus, there are provided a first inner register for setting the data transfer direction of each of the bidirectional data buses and a second inner register for setting an image valid area, whereby the data transfer direction of each of the bidirectional data buses is determined by a set point of the first inner register and the image valid area is determined by a set point of the second inner register.


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