| 摘要 |
PURPOSE:To execute correction so that a reproducing FM signal goes to a uniform level extending over the whole surface of a video disk, by controlling an amplification degree of a reproducing amplifier in accordance with an address for showing a reproducing position of a video disk. CONSTITUTION:An address for showing a reproducing position of a video disk is detected by a detector 232, and a control output shose amplification degree becomes larger gradually toward the inside periphery from the outside periphery of the disk is generated by a shift register 236a, a latching circuit 235b, a D/A converter 235c, etc. of a control signal outputting circuit 235. By this control output, a voltage control amplifier to which a reproducing FM signal from the disk is supplied is controlled in accordance with a disk position. Accordingly, a reproducing output level from each position of a disk of a different peripheral velocity is corrected, and correction is executed so that a reproducing FM signal becomes a uniform level extending over the whole surface of the video disk. |
