Pulse generating apparatus

Details Pulse generating apparatus Pulse generating apparatus

1987-03-02

1989-07-25

Buczinski, Stephen C.

Cryptography

Key management

Having particular key generator

307356, 307358, H04N 7167, H03K 5153

Patent

active

048521647

ABSTRACT:
Disclosed is a pulse generating apparatus used in a CATV receiving adapter for descrambling the sync signal in the video signal. The pulse generating apparatus comprises a peak detector for sampling the peak in the detected video signal, a half level detector for evaluating the half level of the detected peak voltage, and a pulse generator which compares the detected video signal with the half level voltage and produces a pulse rising at a time point of coincidence or the two voltage signals.

REFERENCES:
patent: 3461390 (1969-08-01), Mack
patent: 4071781 (1978-01-01), Kayalioglu
patent: 4241455 (1980-12-01), Eibner
patent: 4375037 (1983-02-01), Ikushima
patent: 4567517 (1986-01-01), Mobley
patent: 4635142 (1987-01-01), Haugland

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