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:
Apr. 13, 2004
Filed:
May. 18, 2001
Applicant:
Inventors:
Michael G. Lavelle, Saratoga, CA (US);
Ewa M. Kubalska, San Jose, CA (US);
Yan Yan Tang, Mountain View, CA (US);
Assignee:
Sun Microsystems, Inc., Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 5/36 ;
U.S. Cl.
CPC ...
G09G 5/36 ;
Abstract
An external cache management unit for use with a 3D-RAM frame buffer and suitable for use in a computer graphics system is described. The unit may reduce power consumption within the 3D-RAM by performing partial block write-back according to status information stored in an array of dirty tag bits. Periodic level one cache block cleansing is provided for during empty memory cycles.