Contactless apparatus and card-type device having clock...

Details Contactless apparatus and card-type device having clock... Contactless apparatus and card-type device having clock...

2006-02-21

2006-02-21

Lee, Thomas (Department: 2115)

Electrical computers and digital processing systems: support

Computer power control

C235S492000, C329S350000

Reexamination Certificate

active

07003680

ABSTRACT:
An information processing apparatus receives a carrier wave modulated in accordance with information and extracts the information and power therefrom to execute a given process. A receiving circuit receives the carrier wave. A dc power generating circuit rectifies the carrier wave received by the receiving circuit to thereby generate dc power. A demodulation circuit is structurally independent of the dc power generating circuit, and retrieves the information modulated onto the carrier wave. An information processing circuit is supplied with the dc power as a power source, and processes the information retrieved by the demodulation circuit in a given manner. Since the demodulation circuit and the dc power generating circuit are structurally independent of each other, interference between elements included in these circuits can be eliminated and simple designing is enabled. In addition, power consumed in the apparatus can be reduced because of optimal designing.

REFERENCES:
patent: 5847447 (1998-12-01), Rozin et al.
patent: 5889273 (1999-03-01), Goto
patent: 5914980 (1999-06-01), Yokota et al.
patent: 6784730 (2004-08-01), Arisawa
patent: 0 289 136 (1988-11-01), None
patent: 0 764 920 (1997-03-01), None
EM Micoelectronic, “P4150—1 KBit read/write contactless identification device”, Dec. 1999.
Patent Abstract of Japan vol. 2000, No. 03, Mar. 30, 2000 & JP 11 355367, Dec. 24, 1999.

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