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. 15, 2003
Filed:
Feb. 03, 1999
Timothy Van Hook, Ath, CA (US);
Anthony P. DeLaurier, Sunnyvale, CA (US);
ATI Technologies Inc., Ontario, CA;
Abstract
The invention provides a method of generating cache indexes that reduces the likelihood that adjacent addresses will map to the same cache regions. The hashing process is optimized to be sensitive to small changes in the input data so that similar sets of input data will preferably not result in the same or even similar output data. Memory accesses of the sort performed when rendering graphical images may involve numerous accesses to relatively similar memory locations Therefore, hashing of the index values that determine where the information from the memory locations will be stored while that information is in cache decreases the likelihood of similar memory locations being stored at the same cache location. Consequently, cache efficiency and performance is improved.