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:
Jul. 23, 2013
Filed:
Nov. 04, 2005
Zhiqiang Jonathan Su, San Jose, CA (US);
Ashish Karandikar, Sunnyvale, CA (US);
Zhiqiang Jonathan Su, San Jose, CA (US);
Ashish Karandikar, Sunnyvale, CA (US);
Nvidia Corporation, Santa Clara, CA (US);
Abstract
A method for using a state machine to control a pipelined L2 cache to implement memory transfers for a video processor. The method includes accessing a queue of read requests from a video processor, and tracking each of a plurality of cache lines stored within the cache using a least recently used variable. For each a cache line hit out of the plurality of cache lines and corresponding to one of the read requests, the least recently used variable is adjusted for a remainder of the plurality of cache lines. A replacement cache line is determined by examining the least recently used variables for each of the plurality of cache lines. For each cache line miss, a cache line slot corresponding to the replacement cache line is allocated to store a new cache line responsive to the cache line miss.