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:
Mar. 18, 2008
Filed:
Oct. 28, 2003
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
The present invention relates to a communication system and communication method which enable various types of near field communication, and a data processing apparatus. NFC communication apparatusestohave two features in that each can perform communication in two communication modes and that each can perform data transmission at a plurality of transfer rates. The two communication modes consist of a passive mode and an active mode. In the passive mode, between the NFC communication apparatusesand, for example, the NFC communication apparatustransmits data to the NFC communication apparatusby modulating electromagnetic waves generated by itself, while the NFC communication apparatustransmits data to the NFC communication apparatusby performing load modulation on the electromagnetic waves generated by the NFC communication apparatus. Alternatively, in the active mode, either of the NFC communication apparatusesandtransmits data by modulating electromagnetic waves generated by itself. The present invention can be applied to, for example, an IC card system, etc.