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:
Feb. 12, 2019
Filed:
Oct. 31, 2016
Applicant:
Renesas Electronics Corporation, Tokyo, JP;
Inventor:
Takeo Miki, Tokyo, JP;
Assignee:
RENESAS ELECTRONICS CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/06 (2006.01); G11C 15/04 (2006.01);
U.S. Cl.
CPC ...
G06F 3/0625 (2013.01); G06F 3/0634 (2013.01); G06F 3/0653 (2013.01); G06F 3/0679 (2013.01); G11C 15/04 (2013.01); G11C 15/046 (2013.01);
Abstract
A semiconductor device that includes a memory system is configured to accept input of search data and to search in parallel respective rows of a memory cell array such as a CAM and so forth for data held in a memory. The memory system detects whether an inflow amount of the search data that is input is at least a fixed amount by monitoring a packing ratio of an FIFO buffer that a search command is held. The memory system controls a speed of search processing by dividing the memory cell array into blocks and setting each block as a search processing object in accordance with a result of detection.