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:
Jan. 12, 1999
Masahiro Takiguchi, Anjo, JP;
Kiyoshi Takahashi, Hekinan, JP;
Tatsuya Hirata, Anjo, JP;
Shigeru Date, Tokyo, JP;
Hisanobu Dobashi, Tokyo, JP;
Shinji Nishimura, Tokyo, JP;
Ryouzo Yoshino, Hadano, JP;
Tomoaki Ishifuji, Tokyo, JP;
Hiromi Sato, Shiroishi, JP;
Toru Miura, Tokyo, JP;
Other;
Abstract
A reader/writer (RW) requires identification of anti-collision techniques used by IC cards (A, B, C, and D). The IC cards implement answers to the anti-collision technique identification requirement by the reader/writer at different timings respectively for respective IC cards among the IC cards which use different anti-collision techniques respectively. The reader/writer requires identifications of types of the IC cards in dependence upon the anti-collision techniques in response to the answers by the IC cards. The IC cards return identification data thereof in response to the card type identification requirements by the reader/writer for respective IC cards among the IC cards which use different anti-collision techniques respectively. The reader/writer identifies the types of the IC cards in response to the identification data of the respective IC cards.