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:
Jun. 12, 2012
Filed:
Sep. 26, 2007
Chun Yu, San Diego, CA (US);
Guofang Jiao, San Diego, CA (US);
Jian Wei, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
The disclosure relates to techniques for locking and unlocking cache lines in a cache included within a multi-media processor that performs read-modify-write functions using batch read and write requests for data stored in either an external memory or an embedded memory. The techniques may comprise receiving a read request in a batch of read requests for data included in a section of a cache line and setting a lock bit associated with the section in response to the read request. When the lock bit is set, additional read requests in the batch of read requests are unable to access data in that section of the cache line. The lock bit may be unset in response to a write request in a batch of write requests to update the data previously read out from that section of the cache line.