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:
Jul. 26, 1994

Filed:

Jul. 29, 1991
Applicant:
Inventors:

Koyo Katsura, Hitachi, JP;

Hideo Maejima, Hitachi, JP;

Hisashi Kajiwara, Hitachi, JP;

Assignees:

Hitachi, Ltd., Tokyo, JP;

Hitachi Engineering Co. Ltd., Ibaraki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
345121 ; 345191 ;
Abstract

A graphic data generating apparatus includes an output producing a graphic image having a plurality of bits; a display memory connected to the output for storing pixel data defining the graphic data for each of the pixel data having a plurality of bits; and a graphic data processing apparatus performing read out of word data having a plurality of pixel data at a word position of the display memory specified by a source memory address, selecting pixel data specified by a source pixel address in the readout word and writing the selected pixel data in the display memory at a pixel position specified by a destination pixel address of word data specified by the destination memory address.


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