Rf switch

H - Electricity – 04 – N

Patent

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Details

348/39, 333/4, 3

H04N 5/268 (2006.01) H03K 17/00 (2006.01) H03K 17/62 (2006.01) H03K 17/76 (2006.01)

Patent

CA 1323416

ABSTRACT OF THE DISCLOSURE An RF switch has a first input end for receiving a first TV signal, an output end and a filter connected between the first input end and the output end, the filter including a voltage controlled switch for selectively blocking or passing the first TV signal to the output end in response to a control voltage. The RF switch also has a second input end for receiving a second TV signal and a DC signal superposed on the second TV signal, the filter switch inactivating the filter to block the first TV signal in response to the DC signal applied with the second TV signal to the second input end, and voltage controlled transmitting for transmitting the second TV signal to the output end only when the DC signal is applied to the second input end.

487938

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