Integrated circuit, semiconductor device and ID chip

Details Integrated circuit, semiconductor device and ID chip Integrated circuit, semiconductor device and ID chip

2005-02-10

2008-12-30

Cao, Chun (Department: 2115)

Electrical computers and digital processing systems: support

Computer power control

Power conservation

C713S300000, C713S322000

Reexamination Certificate

active

07472296

ABSTRACT:
A contactless semiconductor device is provided where a low power consumption is achieved and wireless communication is carried out stably. A power supply level of a reader/writer and the operating state of internal blocks of an ID chip are monitored. In accordance with such conditions, a clock signal of an optimal frequency and a power supply potential of an optimal level are selected to be supplied. By setting the operating mode in accordance with the power supply level or the power saving mode in accordance with the operating state of each block, a low power consumption ID chip and stable wireless communication can be provided.

REFERENCES:
patent: 5621412 (1997-04-01), Sharpe et al.
patent: 5632023 (1997-05-01), White et al.
patent: 5945920 (1999-08-01), Maletsky
patent: 6029006 (2000-02-01), Alexander et al.
patent: 6031781 (2000-02-01), Tsuji et al.
patent: 6035357 (2000-03-01), Sakaki
patent: 6765434 (2004-07-01), Mizuno
patent: 6826705 (2004-11-01), Tani
patent: 7112952 (2006-09-01), Arai et al.
patent: 2002/0073348 (2002-06-01), Tani
patent: 2002/0107054 (2002-08-01), Fujisawa et al.
patent: 2003/0141989 (2003-07-01), Arisawa et al.
patent: 2003/0219935 (2003-11-01), Miyairi et al.
patent: 2004/0007706 (2004-01-01), Yamazaki et al.
patent: 2005/0091550 (2005-04-01), Tani
patent: 2005/0134435 (2005-06-01), Koyama et al.
patent: 1458695 (2003-11-01), None
patent: 1462412 (2003-12-01), None
patent: 0 851 336 (1998-07-01), None
patent: 10-198564 (1998-07-01), None
patent: 10-199253 (1998-07-01), None
patent: 11-296627 (1999-10-01), None
patent: 2000-187977 (2000-07-01), None
patent: 2001-189347 (2001-07-01), None
patent: 2002-026803 (2002-01-01), None
patent: 2002-182807 (2002-06-01), None
Office Action (Application No. 200510065515.0) Dated Mar. 7, 2008.

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