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:
Oct. 18, 2005
Filed:
May. 28, 2004
Dong-ying Kuo, Pleasanton, CA (US);
Derek C. Chang, Cupertino, CA (US);
Dong-Ying Kuo, Pleasanton, CA (US);
Derek C. Chang, Cupertino, CA (US);
S3 Graphics Co., Ltd., Grand Cayman, KN;
Abstract
A z-unit for a three-dimensional graphics system is provided having a read buffer and a write buffer. The read buffer stores read requests and the write buffer stores write requests. The read and write requests correspond to atomic operations for z-buffer manipulations. Upon the receipt of a read request, the address of the read request is compared to each of the addresses of the write requests. If a match occurs then the read buffer is flushed until a first read request with the matched address occurs. The write buffer is then flushed and all the write requests within the write buffer is serviced. The read buffer is again flushed until all the read requests within the read buffer is serviced.