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:
Apr. 05, 2005
Filed:
Jun. 03, 2003
Takeshi Sugahara, Kanagawa, JP;
Yukihiro Fujimoto, Kanagawa, JP;
Takeshi Sugahara, Kanagawa, JP;
Yukihiro Fujimoto, Kanagawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A content addressable memory which detects whether p (where p is an integer of 2 or more) bit sequences coincide respectively with reference bit sequences, said content addressable memory comprising: q comparison units which compares bit groups obtained by dividing the p bit sequences into q (where q is an integer of 2 or more) parts with corresponding bit groups in the reference bit sequences in p times; a precharge unit which precharges output lines of said q comparison units; and a comparison control unit responsive to a decision of noncoincidence in at least one of said q comparison units while said q comparison units are conducting an r(where r is an integer variable that is 1 or more and that is at most p−1, and p is an integer of 2 or more) comparison operation, which stops precharging to be performed by said precharge unit at time of an (r+1)comparison operation and subsequent comparison operations.