Power detection circuit for non-contact IC card or RFID tag

Details Power detection circuit for non-contact IC card or RFID tag Power detection circuit for non-contact IC card or RFID tag

2006-02-23

2008-10-21

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S142000, C327S198000

Reexamination Certificate

active

07439781

ABSTRACT:
A power detection circuit has a first comparator block, a charge controller block, and a second comparator block. The first comparator block compares a supply voltage with a first threshold value, and the charge controller block controls the charging of a first capacitor according to an output signal of the first comparator block. The second comparator block compares the charge in the first capacitor with a second threshold value so as to produce a power detection signal, and wherein a second capacitor is interposed between the charge controller block and the first capacitor.

REFERENCES:
patent: 5528182 (1996-06-01), Yokosawa
patent: 5930129 (1999-07-01), Sugimura
patent: 6144238 (2000-11-01), Dasgupta
patent: 6469477 (2002-10-01), Sugimura
patent: 6597215 (2003-07-01), Wang
patent: 6683481 (2004-01-01), Zhou et al.
patent: 7142024 (2006-11-01), Youssef
patent: 2003/0214329 (2003-11-01), Shin
patent: 2004/0212409 (2004-10-01), Akamatsu et al.
patent: 2005/0057287 (2005-03-01), Gossmann
patent: 2-254811 (1990-10-01), None
patent: 3-141415 (1991-06-01), None
patent: 07-046106 (1995-02-01), None
patent: 9-270686 (1997-10-01), None
patent: 11-68539 (1999-03-01), None
Japanese Office Action Aug. 5, 2008, 2 pages.

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