Picture quality indicator for satellite broadcasting receiver

Details Picture quality indicator for satellite broadcasting receiver Picture quality indicator for satellite broadcasting receiver

H - Electricity

04

N

350/1

H04N 17/04 (2006.01) H01Q 1/12 (2006.01) H04N 17/00 (2006.01)

Patent

CA 1293798

ABSTRACT Picture quality indicator for a satellite broadcasting receiver comprising an FM-demodulator for demodulating the satellite broadcasting signal, a band-pass filter for extracting a noise component from the output signal of the FM demodulator thereby removing TV signal components, an amplifier for amplifying the noise component, a detection circuit for detecting and outputting the amount of the noise component output from the amplifier, and a level indicator for indicating a value corresponding to a CN ratio of the TV signal obtained on the basis of the output of the detection circuit. The invention enables accurate orientation of the antenna, since the level indicator provides an indication which is free of extraneous effects, such as coaxial cable loss, etc.

586747

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