Data communication apparatus and method with low power standby m

Details Data communication apparatus and method with low power standby m Data communication apparatus and method with low power standby m

1991-07-05

1993-06-22

Kuntz, Curtis

Pulse or digital communications

Repeaters

Testing

375 45, 455 78, H04B 144, H04L 2710

Patent

active

052220761

ABSTRACT:
An apparatus and method for communication of data, the apparatus including a transmitter operable to transmit a first signal at a first frequency and a second signal at a second frequency. The second signal is modulated to represent data and the transmitter ends transmission of the second signal when the transmission of data is completed. The apparatus further includes a receiver switchable between a first frequency receive mode and a second frequency receive mode, the first frequency receive mode rendering the receiver operable to receive signals at the first frequency and the second frequency receive mode rendering the receiver operable to receive signals at the second frequency. The first frequency receive mode is a low power mode and the second frequency receive mode is a data communication mode. The apparatus also includes a device for switching the receiver into the low power mode, for switching the receiver into the data communication mode when said first signal is received, and for switching the receiver into the low power mode when transmission of said second signal is ended.

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