Composite video automatic gain control amplifier

Details Composite video automatic gain control amplifier Composite video automatic gain control amplifier

1978-05-12

1980-09-02

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including gain control means

330294, 358176, H03G 320

Patent

active

042209315

ABSTRACT:
An amplifier for video signals transmitted by way of coaxial cable includes synchronizing signal separating means for gating synchronizing signals to a level detecting circuit, in order to produce a control voltage. The control voltage controls the gain of an input stage of the amplifier to maintain the level of the synchronizing signals transmitted by the cable, while compensating for different attenuation which may be effected at video frequencies signal frequencies by cables of different length.

REFERENCES:
patent: 3914536 (1975-10-01), Mohri et al.

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