H - Electricity – 04 – J
Patent
H - Electricity
04
J
363/18
H04J 3/06 (2006.01) H04L 7/04 (2006.01)
Patent
CA 1237833
Abstract of the Disclosure: In a receiver responsive to an input signal comprising information signals following frame synchroniza- tion signals, respectively, frame synchronization is established by a frame synchronization pulse generator (56) with reference to both of the information signals and the frame synchronization signals. A discriminator (57) discriminates between the information signals and other spurious signals by monitoring descrambled digital signals produced by a descrambler (47) in response to the information signals or by monitoring reproduced analog signals into which the descrambled digital signals are converted by a digital to analog converter (51). The monitoring is carried out within silent parts inter- posed between information parts of either the descrambled digital signals or the reproduced analog signals. The information signals are discriminated either by a preselect- ed pattern inevitably appearing in the silent parts of the descrambled digital signals or by amplitudes of the silent parts of the reproduced analog signals. Alternatively, the information signals may be discriminated by detecting the autocorrelation of the reproduced analog signals.
478388
Corporation Nec
Smart & Biggar
LandOfFree
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