Semiconductor integrated circuit device and noncontact IC card

Details Semiconductor integrated circuit device and noncontact IC card Semiconductor integrated circuit device and noncontact IC card

2007-12-18

2007-12-18

Le, Thien Minh (Department: 2876)

Registers

Records

Conductive

C235S449000

Reexamination Certificate

active

11183888

ABSTRACT:
A semiconductor integrated circuit includes a demodulating circuit, a plurality of sampling circuits each capable of sampling output signals of the demodulating circuit, a plurality of detection circuits capable of detecting headers of output signals of the sampling circuits, a plurality of processing circuits capable of performing a predetermined data process based on the detection results of the detection circuits, and a circuit capable of determining a match to a preset communication method from results of the header detection by the detection circuits. By performing processes adapted to different communication methods in parallel, time required to establish a connection and enable information to be transmitted/received is reduced.

REFERENCES:
patent: 4638358 (1987-01-01), Nozoe et al.
patent: 5949796 (1999-09-01), Kumar
patent: 6975665 (2005-12-01), McCorkle
patent: 7046694 (2006-05-01), Kumar
patent: 2005/0056704 (2005-03-01), Kim
patent: 2005/0265428 (2005-12-01), McCorkle
patent: 2003-044801 (2003-02-01), None
patent: 2003-233787 (2003-08-01), None

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