Tv stereo adapter

Details Tv stereo adapter Tv stereo adapter

H - Electricity

04

N

350/97

H04N 5/60 (2006.01) H04H 5/00 (2006.01)

Patent

CA 1258120

TV STEREO ADAPTER ABSTRACT OF THE DISCLOSURE A television stereo adapter is provided for use with a television receiver to detect and decode stereophonic audio signals that may be transmitted with the composite television signals. The adapter includes an IF pick-up that is physically separate from the television receiver for picking up spurious IF audio signals that normally are generated by the television receiver. A stereo detector is coupled to the IF pick-up for detecting from the IF audio signals monophonic and stereophonic components that are transmitted with the composite television signals. The detected components are decoded into left-channel and right-channel audio signals; and these left-channel and right-channel signals are adapted to drive sound transducers, such as loudspeakers. Optionally, the left-channel and right-channel audio signals are amplified by gain-controlled amplifiers whose gains are a function of the output sound level of the television receiver.

512964

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