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:
Dec. 13, 2005
Filed:
Feb. 11, 2003
George Fang, Cambridge, MA (US);
Giovanni Vannucci, Red Bank, NJ (US);
Jinyun Zhang, New Providence, NJ (US);
Tommy C. Poon, Murray Hill, NJ (US);
George Fang, Cambridge, MA (US);
Giovanni Vannucci, Red Bank, NJ (US);
Jinyun Zhang, New Providence, NJ (US);
Tommy C. Poon, Murray Hill, NJ (US);
Mitsubishi Electric Research Labs, Inc., Cambridge, MA (US);
Abstract
A personal identification device for use with a mobile telephone in a wireless communications network includes an connector mated to a connector of the mobile telephone normally used for a hands-free kit or a data port. In a typical application, a user of the mobile telephone calls a server. The server sends a first telephone signal to the personal identification device. The device responds with a second telephone signal, designed to simulate voice or data activity, depending on the type of connector that is used. The simulated voice activity is structured in such a way as to cause the radio signal transmitted by the mobile telephone to go on and off in response to the simulated voice activity. A nearby receiver can detect the on/off pattern. The on/off pattern is designed to convey a unique identification code.