Apparatus and method for receiving audio signals transmitted as

Details Apparatus and method for receiving audio signals transmitted as Apparatus and method for receiving audio signals transmitted as

1982-08-16

1987-05-12

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358142, 358143, H04N 7093, H04N 704

Patent

active

046654313

ABSTRACT:
The apparatus and method for receiving one or more audio frequency signals transmitted on a television video signal includes a decoder comprised of a pulse separator to recover modulated pulses from said video signal and a demodulator to demodulate said modulated pulses from said separator to recover said audio signal. Also included is an encoding apparatus and method for encoding modulated pulses responsive to audio signals on a video signal.

REFERENCES:
patent: 4134127 (1979-01-01), Campioni
patent: 4318125 (1982-03-01), Shutterly
patent: 4361852 (1982-11-01), Katzfey
patent: 4361893 (1982-11-01), Bonnerot
patent: 4442461 (1984-04-01), Shirai et al.
"LH0024 High Slew Rate Operational Amplifier" Hybrid Products Databook, National Semiconductor Corporation (1982) pp. 16-36.

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