Non-contact RF ID system communication method, non-contact...

Details Non-contact RF ID system communication method, non-contact... Non-contact RF ID system communication method, non-contact...

2004-01-14

2010-06-15

Nguyen, Duc (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

Short range rf communication

C340S572100, C341S173000

Reexamination Certificate

active

07738838

ABSTRACT:
A communication method for a noncontact RF ID system that uses a first waveform, a second waveform, and a third waveform, wherein the first waveform and the second waveform are formed by a basic waveform having one of a rising or falling state transition at the approximate center of the waveform, the third waveform is formed by a plurality of basic waveforms that have one state transition at the approximate center part of the waveform, and the third waveform generates one state transition only at the approximate center of the plurality of basic waveforms. In addition, communication is carried out by using the third waveform in place of the first waveform and the second waveform in the case in which communication is carried out using a first waveform and a second waveform and one state transition is generated outside the approximate center part of the basic waveform.

REFERENCES:
patent: 4373154 (1983-02-01), Balme et al.
patent: 5058141 (1991-10-01), Kem et al.
patent: 2002/0030597 (2002-03-01), Muirhead
patent: 2003/0011474 (2003-01-01), Ng
patent: 967562 (1999-12-01), None
patent: 54-13708 (1979-02-01), None
patent: 10-13393 (1998-01-01), None
patent: 11-355365 (1999-12-01), None
D. Friedman, et al., A Low-Power CMOS Integrated Circuit for Field-Powered Radio Frequency Identification Tags, IEEE, ISSCC97 SA. 17.5, 1997.
International Search Report for PCT/JP2004/000190; ISA/JPO; Mailed: Apr. 13, 2004.

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