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:
Feb. 07, 2012
Filed:
Aug. 30, 2007
Kikuzo Sawada, Tokyo, JP;
Yoshikazu Sugawara, Tokyo, JP;
Takashi Kubo, Tokyo, JP;
Yoshikawa RF Systems Co., Ltd., Fukuoka, JP;
Abstract
A region to store authentication commands to perform authentication between a data carrier and a reader/writer device is divided into at least three areas, and as for the three areas, a first authentication command is stored in a first area, a second authentication command is stored in a second area, and a third authentication command is stored in a third area, and security levels can be selected depending on a command of an inquiry signal () transmitted from a reader/writer device (), and thereby selection of the security level suitable for circumstances can be realized by a simple constitution.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile