Non-contact IC card which actively attenuates its resonance circ

Details Non-contact IC card which actively attenuates its resonance circ Non-contact IC card which actively attenuates its resonance circ

1992-06-01

1994-05-03

Willis, Davis L.

Registers

Records

Conductive

235439, 307117, G06K 19067, H01H 3600

Patent

active

053089685

ABSTRACT:
The present invention provides a non-contact IC card having a microcomputer. The microcomputer includes a CPU, a resonance circuit which receives data bits through an electromagnetic wave, an input circuit which detects the data signal, and a decoding circuit which supplies a pulse of predetermined length to the CPU when the input circuit detects the data signal. The detection of the data signal also causes a circuit to close a switch using a reception inhibit signal of a half bit's width. The reception inhibit signal rapidly attenuates the oscillations in a resonance circuit, making it ready to receive the next data bit.

REFERENCES:
patent: 3627993 (1971-12-01), Cooper, Jr.
patent: 4644321 (1987-02-01), Kennon
patent: 4818855 (1989-04-01), Mongeon et al.
patent: 4845347 (1989-07-01), McCrindle et al.
patent: 4926996 (1990-05-01), Eglise et al.
patent: 5013898 (1991-05-01), Glasspool
patent: 5226167 (1993-07-01), Yamaguchi
"Non-contact IC Card Employing Light Communication", 1988, Nikki Electronics, pp. 197-202.

Affiliated with

Also associated with

Rating

Non-contact IC card which actively attenuates its resonance circ does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Non-contact IC card which actively attenuates its resonance circ, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-contact IC card which actively attenuates its resonance circ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2116037