| 摘要 |
PURPOSE:To prevent a reproducing address signal from being mixed with a luminance signal via a color signal processing circuit system, by stopping a color signal reproducing circuit for an address signal period. CONSTITUTION:A mark 35 for an address location detection is provided at an address signal region 20 on a disc 9 and at a region other than an information region 21, e.g. nonrecording region at the center of the disc 9. The relation of location between the mark 35 and the address signal region 20 is a location which can detect the mark 35 faster. This mark 35 reflects light, for example, and the detection of the mark 35 is made by a photodiode. Through this detection signal, a stop circuit 34 grounds a color signal component temporarily and forms a temporal stop signal of a color signal reproducing circuit 32. |
