| 摘要 |
PURPOSE:To obtain the effect of the judgment of discoloration of medicine, which is useful in manufacturing lines, accurately and quickly, by judging the difference in phase times of a carrier color signal and subcarrier signals, which are photographed by a color TV camera, with a color judging trigger pulse signal. CONSTITUTION:A reference trigger signal, which is formed by a carrier-wave phase trigger circuit 3, is delayed by a preset time, and a trigger pulse signal from a color-judging trigger pulse circuit 4 is sent to a gate circuit 6. Thus a gate is opened. When a carrier color signal, whose phase difference is the same as that of a preset time, is present, the carrier color signal is transmitted to a color-recognition output circuit 7 through the gate circuit 6. A signal is sent out of the color-recognition output circuit 7. When the color of a body to be examined is changed, the timing of the trigger pulse signal of the carrier-color signal trigger pulse circuit 4 is deviated. Therefore, the signal is not transmitted to the color-recognition output circuit 7, and the signal is not outputted to the outside. |
