Video recorder pre-emphasis, de-emphasis circuits

Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons

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Details

307268, 328167, 328171, 360 67, H03K 508, H04B 110, H04B 162, H04N 578

Patent

active

039448533

ABSTRACT:
Improved circuits for pre-emphasis and de-emphasis of video luminance signals, the improvement comprising the utilization of field effect transistors in a non-linear frequency-discriminating network; and automatic circuitry useful in both recording and reproduction of recorded video information.

REFERENCES:
patent: 3013116 (1961-12-01), Sziklai et al.
patent: 3268658 (1966-08-01), Schroeder et al.
patent: 3288930 (1966-11-01), Johnson
patent: 3621284 (1971-11-01), Cluett et al.
patent: 3665345 (1972-05-01), Dolby
patent: 3716726 (1973-02-01), Trimble
patent: 3764917 (1973-10-01), Rhee

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