Key opening apparatus

Details Key opening apparatus Key opening apparatus

2005-08-16

2005-08-16

Horabik, Michael (Department: 2635)

Communications: electrical

Selective

Intelligence comparison for controlling

C340S005610, C340S005620, C340S005630, C340S005640, C340S005700, C340S005720

Reexamination Certificate

active

06930588

ABSTRACT:
A key opening apparatus includes an antenna which receives a first signal of slower transmission speed and a second signal of higher transmission speed, a receiving section, a filter, a comparator, and a decoder, and another set of filter, comparator and decoder. The receiving section receives and processes the first and second signals in common, and the two decoders process the signals using one microprocessor before outputting the result to an output terminal.

REFERENCES:
patent: 5552641 (1996-09-01), Fischer et al.
patent: 5635913 (1997-06-01), Willmott et al.
patent: 5722058 (1998-02-01), Umemoto et al.
patent: 1 162 754 (2001-12-01), None
patent: WO 99/34625 (1999-07-01), None
European Search Report corresponding to application No. EP 02 02 8792 dated Mar. 9, 2005.

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