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.
Patent No.:
Date of Patent:
Jun. 02, 1998
Filed:
Jan. 26, 1995
Applicant:
Inventors:
Assignee:
Samsung Electronics Co. Ltd., Kyungki-Co, KR;
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
345509 ; 345508 ; 395510 ;
Abstract
A graphic RAM array has a plurality of sub blocks which share random and serial output paths. This structure enables random access to the random output path of one RAM array while a specific sub block of another other RAM array is performing a display operation via the serial output path. The graphic RAM does not have a separate data register and outputs the serial data using only the RAM array. Thus, only the RAM array is formed in the cell core region, thereby reducing the size and price of the chip. In addition, it is possible for the graphic RAM to be compatible with a system having a conventional video RAM controller.