Channel selecting apparatus

Details Channel selecting apparatus Channel selecting apparatus

H - Electricity

04

N

350/94

H04N 5/44 (2006.01) H03J 1/00 (2006.01) H04N 5/50 (2006.01)

Patent

CA 2006764

This invention relates to a channel selecting apparatus for television receiving apparatus and the like characterized in that, in the case of memorizing channel data (data as to whether signals are present or not in respective channels) in a memory circuit connected to an operating circuit preparing channel selecting data, the received frequency is well tuned with the broadcast signal input into an antenna terminal and is then confirmed and analyzed, it is judged from the feature of the received frequency whether the broadcast signal input into the antenna terminal is a TV signal or CATV signal and whether the CATV signal is of an STD, HRC or IRC system and the receiving mode is automatically determined.

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