| 摘要 |
A TV receiver arranged to process video signals in PCM binary format includes a manual hue control circuit which operates on the PCM color mixture signals to effectively rotate the vector sum of the color mixture signals while maintaining the magnitude of the sum substantially constant. The magnitude of the received vector sum is calculated and the angle between the sum and one of the color mixture signal components is determined. Circuitry under user control increments or decrements the angle to rotate the vector sum. Corrected color mixture signals are then generated by multiplying the magnitude of the calculated vector sum by the sine and cosine of the incremented angle.
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