Subcarrier/horizontal sync phase measurement

Details Subcarrier/horizontal sync phase measurement Subcarrier/horizontal sync phase measurement

1983-05-27

1986-07-29

Shepperd, John W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 1702

Patent

active

046033467

ABSTRACT:
Signals suitable for displaying the phase relationship between the subcarrier wave and the horizontal sync pulse of a composite video signal are provided by establishing coincidence between the d.c. level of the 50 percent point of the sync pulse and the zero crossing point of the subcarrier wave, and generating a reference voltage level at the d.c. level of the 50 percent point of the sync pulse.

REFERENCES:
patent: 4470064 (1984-09-01), Michener

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