Transmission and reception system for controlling...

Details Transmission and reception system for controlling... Transmission and reception system for controlling...

E - Fixed Constructions

05

B

E05B 47/00 (2006.01) G07C 9/00 (2006.01) G08C 17/02 (2006.01) G08C 23/04 (2006.01)

Patent

CA 2199894

The invention provides a transmission and reception system for controlling a locking/unlocking operation of a key which is simple in construction and does not require a large space and besides prevents a malfunction and is reduced in power dissipation. The transmission and reception system for controlling a locking/unlocking operation of a lock includes a transmission section for transmitting a control signal having a predetermined frequency for effecting locking/unlocking of the key, and a reception section for receiving the control signal and effecting driving control of the key in response to the control signal. The reception section includes a carrier detection circuit for detecting a frequency of the control signal and supplies, when the control signal is not received, power only to the carrier detection circuit.

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