Squelch signal generator capable of generating a squelch...

Details Squelch signal generator capable of generating a squelch... Squelch signal generator capable of generating a squelch...

H - Electricity

04

B

325/121

H04B 1/16 (2006.01) H03G 3/20 (2006.01) H04L 1/20 (2006.01)

Patent

CA 1225703

Abstract of the Disclosure: In a squelch signal generator (11) responsive to a digital input signal (IN) which draws an eye pattern having at least one eye at each time instant appearing at a predetermined period, a squelch threshold level (VS) is preselected outside of a predetermined one of uppermost and lowermost cross-points of at least one eye. A squelch comparator (41) compares an input level of the input signal with the first squelch threshold level to produce a result signal representative of a first result of comparison. The result signal is processed at each time instant by a processing circuit (42, 48, 50, and 51) into a squelch signal when the input signal is classified into an undesired signal. An additional squelch threshold level may be preselected outside of the other of the uppermost and the lowermost cross-points. (Fig. 1)

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