Apparatus and method for displaying a clamp point

Details Apparatus and method for displaying a clamp point Apparatus and method for displaying a clamp point

1994-09-14

1997-10-14

Lee, Michael H.

Television

Image signal processing circuitry specific to television

Dc insertion

348696, 348185, H04N 1700, H04N 518

Patent

active

056777426

ABSTRACT:
The apparatus for displaying a clamp point on a screen includes an input amplifier; a clamp circuit which includes a sync separation circuit and a one shot; and a blanking circuit. The video signal is applied to the clamp circuit via the input amplifier and the output signal therefrom is applied to the blanking circuit to be modulated with respect to its brightness. Thus, the brightness-modulated clamp point is readily located on a screen of, for example, an oscilloscope.

REFERENCES:
patent: 3958269 (1976-05-01), Davis
patent: 4237489 (1980-12-01), Kresock
patent: 4254434 (1981-03-01), Suzuki
patent: 4276563 (1981-06-01), Heitman et al.
patent: 4470064 (1984-09-01), Michener
patent: 5144430 (1992-09-01), Boelart
K. Okada, Oscilloscopes, Kyoritsu Publishing Co., Apr. 15, 1983, 1.6.5 Measurement of Two-Phenomenon Signals (pp. 36-38).

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