Composite video automatic gain control amplifier

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

H - Electricity

03

G

330/29, 333/29

H03G 3/30 (2006.01) H03G 5/20 (2006.01) H04N 7/10 (2006.01)

Patent

CA 1141831

ABSTRACT OF THE DISCLOSURE An amplifier for video signals transmitted by way of coaxial cable includes synchronizing signal separating means for gating synchronizing sig- nals 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.

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