SUBCARRIER/HORIZONTAL SYNC PHASE MEASUREMENT
SUBCARRIER/HORIZONTAL PHASE MEASUREMENT 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...
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| Format: | Patent |
| Sprache: | eng ; fre |
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| Zusammenfassung: | SUBCARRIER/HORIZONTAL PHASE MEASUREMENT 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. (Fig. 3) |
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