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:
May. 07, 2002
Filed:
Jul. 30, 2001
Masato Yoneda, Chiba, JP;
Kawasaki Microelectronics, Inc., Mihama-ku, JP;
Abstract
A content addressable memory (CAM) includes a memory region containing a plurality of word memories, an address storage section for storing address data specifying a partial region of the memory region, and overwriting means for overwriting the contents of word memories in a region in the memory region excluding the partial region. The overwriting means performs retrieval to the memory region by using predetermined data as retrieval data in response to a predetermined command, and performs overwriting for the contents of word memories that contain storage data corresponding to the predetermined data used for the retrieval and that exist in a region in the memory region excluding the partial region. Data which should not be erased is stored in the partial region of the memory region, and erase-target data is stored in the memory region excluding the partial region. Thereby, the necessity for increasing the memory capacity can be avoided to secure empty addresses in the memory region, and furthermore, control can be simplified.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile