Interface between video cassette player and television receiver

Details Interface between video cassette player and television receiver Interface between video cassette player and television receiver

1983-09-29

1986-09-30

Isen, Forester W.

Electrical audio signal processing systems and devices

Including amplitude or volume control

With manual volume control

333 25, 333 32, 307475, 358143, H03G 300

Patent

active

046150447

ABSTRACT:
The interface module is designed to insert into a cavity on the rear panel of a Sony Model VP-5000 video cassette player, from which it receives power and audio. Its purpose is to convert the unbalanced high-impedance audio of the VP-5000 into two 150 ohm unbalanced, or one 600 ohm balanced output to provide the low impedance interface required by most television equipment. It also adds an external audio level control to the VP-5000 and provides synchronizing signals, removed from an external reference video signal, to which the VP-5000 is then servo-locked to enable vertical switching between the VP-5000 output and the reference signal.

REFERENCES:
patent: 4346266 (1982-08-01), Brockman et al.
patent: 4503289 (1985-03-01), Spires

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