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:
Mar. 21, 1989
Filed:
Dec. 10, 1985
Applicant:
Inventor:
Steven Harris, Milpitas, CA (US);
Assignee:
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G11C / ;
U.S. Cl.
CPC ...
364900 ; 365233 ;
Abstract
A method and apparatus for accessing a color palette in a color graphics system synchronously and asynchronously. Address and data registers coupled to the color palette are operated synchronously in a pipeline fashion using clock pulses having a pixel scanning rate when the palette is used for refreshing a color monitor. The address and data registers are operated asynchronously, i.e. rendered transparent to addresses and data, respectively, when the palette is updated by a CPU.