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. 14, 2002
Filed:
Jul. 21, 2000
Hisakazu Sato, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A tag array retains a plurality of tag data, and performs matching of the tag data with a retrieval keyword. The tag array includes matching circuits provided corresponding to the tag data. Each of the matching circuits has CM and CC cells provided corresponding to a plurality of bits of the corresponding tag data. Each CM cell retains a corresponding bit of the tag data, and performs matching of the retaining bit with a corresponding bit of the retrieval keyword. Each CC cell, not only functions as the CM cell, but also retains a comparison condition signal input in advance, and invalidates, according to the comparison condition signal, the mismatch detected between corresponding bits of the tag data and the retrieval keyword. As a result, it becomes possible to variably set the number of bits, of an input retrieval keyword, being matched with the tag data.