Radio frequency modem and method

Details Radio frequency modem and method Radio frequency modem and method

H - Electricity

04

B

325/15

H04B 1/40 (2006.01) H04L 5/00 (2006.01) H04L 27/02 (2006.01)

Patent

CA 1250898

ABSTRACT A radio frequency modulator/demodulator (modem) and method for receiving and transmitting data over a radio frequency data link. The modem has a transmitting section which includes a modulator which modulates a radio frequency signal in response to data provided by, for example, an associated processor. The transmitting section further includes a watchdog or enable circuit which monitors a request-to-send signal produced by the associated processor, with the request-to-send signal being present when the processor is generating data to be transmitted over the data link. The enable circuit will disable the modulator should a transmission exceed a maximum predetermined time period, thereby preventing the associated processor from monopolizing the data link in the event of a processor failure.

481905

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