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:
Jul. 17, 2012
Filed:
Dec. 12, 2007
Yoshihisa Takayama, Kanagawa, JP;
Susumu Kusakabe, Tokyo, JP;
Kazushige Tsurumi, Kanagawa, JP;
Tadashi Morita, Tokyo, JP;
Kunihide Fujii, Tokyo, JP;
Yoshihisa Takayama, Kanagawa, JP;
Susumu Kusakabe, Tokyo, JP;
Kazushige Tsurumi, Kanagawa, JP;
Tadashi Morita, Tokyo, JP;
Kunihide Fujii, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A communication system performs, by first and second data processing apparatuses, an electromagnetic-induction communication using a carrier having a single frequency. A transfer rate for use between the first and second data processing apparatuses is changeable in one transaction. The first data processing apparatus determines whether a transfer rate can be changed based on data transmitted from the second data processing apparatus. When the first data processing apparatus determines that the transfer rate can be changed, the first data processing apparatus transmits to the second data processing apparatus a request to change the transfer rate to one of a plurality of transfer rates.