Broadcast signal detected indication system

Details Broadcast signal detected indication system Broadcast signal detected indication system

H - Electricity

04

B

325/117, 365/8

H04B 1/16 (2006.01) H03J 7/18 (2006.01)

Patent

CA 1250023

BROADCAST SIGNAL DETECTED INDICATION SYSTEM Abstract In a radio having an in phase multiplier (A) for providing an in phase detected signal, a detection unit for receiving this signal and for determining whether this signal includes any negative polarity components which would indicate that a viable broadcast signal does not exist on the incoming frequency of interest. This detection unit can include a comparator (11) for comparing the incoming signal against a selected reference value. The invention can also include a signal quality evaluation unit (58) for providing either a digital or analog quality signal that can also effect the output and be used by appropriate processing circuitry to further refine the channel selection process.

541897

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