Integrator circuit for separating vertical sync pulses

Details Integrator circuit for separating vertical sync pulses Integrator circuit for separating vertical sync pulses

1980-12-29

1984-05-15

Murray, Richard

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

307358, 307246, H04N 510

Patent

active

044491468

ABSTRACT:
An improved vertical sync separator for a TV receiver includes an integrator circuit that comprises a current mirror one current path coupled to a normally conducting semiconductor element to discharge a capacitor and another current path coupled to a signal receiving semiconductor element to charge the capacitor. The output of the integrator circuit is coupled to an amplifier having a slicing level that varies with the strength of the received signal.

REFERENCES:
patent: 3639780 (1972-02-01), Lovelace
patent: 3639786 (1972-02-01), Lovelace
patent: 3770987 (1973-11-01), McSweeney
patent: 3879576 (1975-04-01), Okada et al.
RCA Technical Notes, "Current Mirror Amplifiers", TN No. 949, J. S. Radovsky, 7 pages, Dec. 1973.

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