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. 24, 2002
Filed:
Mar. 23, 1999
Yoshihiro Ishida, Chiba, JP;
Kawasaki Microelectronics, Inc., Chiba, JP;
Abstract
A method and apparatus for carrying out binary search based on a plurality of retrieval conditions. Retrieval object data is classified into higher order bits and lower order bits. A portion of retrieval key data, in correspondence with the higher order bits of the retrieval object data, constitutes first key data and a portion in correspondence with the lower order bits of the retrieval object data constitutes second retrieval key data. A higher order bit comparing circuit is provided for comparing the higher order bits of the retrieval object data with the first retrieval key data and a lower order bit comparing circuit and for comparing the lower order bits of the retrieval object data with the second retrieval key data. Further, there is provided a determining circuit for determining coincidence or non-coincidence between the retrieval key data and the retrieval object data in accordance with a comparison enabling bit EB indicating coincidence conditions, a comparison result of the higher order bit comparing circuit and comparison result of the lower bit comparing circuit