| 摘要 |
Sensitivity to aberrations in signals carrying flesh-tone color information is reduced by asymmetrically increasing the chroma signal demodulation angle. A phase shifting circuit is placed in series with each of a pair of synchronous demodulators, and means are provided for simultaneously adjusting the circuits to shift the phase of the chroma signals applied to the demodulators. The chroma signals thus applied are phase-shifted to opposite directions, one being shifted approximately three times as much as the other. The relative amplitudes of the chroma signals outputted by the phase shift circuits to the chroma signals outputted by the phase shift circuits to the chroma signals outputted by the phase circuits to the demodulators are also progressively modified, the difference in relative amplitude increasing as the demodulation angle increases.
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