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. 30, 2008
Filed:
Jul. 03, 2003
Takashi Tanaka, Tokyo, JP;
Sachihiko Kobori, Tokyo, JP;
Hidesuke Okada, Tokyo, JP;
LSI Japan Co., Ltd., Tokyo, JP;
Abstract
A interrogatorspecifies the maximum read range (S, e) in which IDs to be read may exist (Step S), and the interrogatortransmits a read request command to transponders(Step S. When there is/are a response/responses, it is judged if the response(s) is/are from a single transponderor multiple transponders(Step S). When identifying multiple responses, an exponent e of the read range (S, e) is updated to e'=e−1 (Step S). When identifying a single response, ID of the transponderthat responded is read out (Step S) and the start S of the read range (S, e) is updated to S′=S+d (=) (Step S). When a previous response flag F is not set to 'multiple responses received', the exponent e of the read range (S, e) is updated to e′=e+1 (Step S).