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:
Jun. 30, 2009
Filed:
Sep. 13, 2005
Toyoki Sasakura, Tokyo, JP;
Kenichi Miyamoto, Tokyo, JP;
Toyoki Sasakura, Tokyo, JP;
Kenichi Miyamoto, Tokyo, JP;
Super Wave Corporation, Tokyo, JP;
Abstract
The present invention provides an authentication card inserted to a portable device. The authentication cardis inserted (installed) in a cellular phoneand the authentication cardis inserted (installed) in a PDA. The authentication cardcomprises an identification code transmission unitand the authentication cardcomprises a usage restriction cancellation unit. The unitsandexchange the identification code by means of wireless signal and mutually authenticate the identification code mutually. In case that the PDAis moved more than the predetermined distance from the cellular phoneand the reception level of signal from the unitreceived by the unitis smaller than the predetermined value, or the unitcan not authenticate the identification code of the unit, the unitstops transmission of the usage restriction cancellation signal to the PDA