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:
Sep. 10, 2013
Filed:
Sep. 15, 2009
Gregg Goyins, Lincoln, CA (US);
Jonathan Bradley Sadowsky, West Sacramento, CA (US);
Gregg Goyins, Lincoln, CA (US);
Jonathan Bradley Sadowsky, West Sacramento, CA (US);
PMC-Sierra, Inc., Sunnyvale, CA (US);
Abstract
A method and system for controlling multiple client access to cache memory and a single CAM device. Each client has a corresponding integrity controller in communication with the CAM device and all the other integrity controllers associated with the other clients in the system. Each integrity controller monitors states of the other clients, and inhibits its respective client from executing any operation when a common lookup index is detected during a co-pending operation with a first client. Once the operations of the first client are completed, its integrity controller signals the integrity controller of other clients to exit their inhibit or hold states, thereby allowing the other clients to resume their operations. Another advantage of the integrity controller is that its algorithms also prevents multiple host memory fetches of the same key, thereby saving time and improving system performance.