Information reproducing device

Abstract

Abstract PURPOSE: To correct troubles caused by the distortion form of the information track, by exciting the tracking means so that the reproducing scan position may agree with the distortion form of the first information track and by transferring the reproducing means to the second information track. CONSTITUTION: Reflection light 2b of light beam 2a irradiated to the information track of disc-shaped recording medium 8 is irradiated to photodetector 11 to obtain reproducing signal S 1 and tracking signal S 2 , which indicates the tracking slippage quantity of light beam 2a and corresponds to the distortion form of the reproduced information track, from photodetector 11. Tracking signal S 2 is stored in waveform storing circuit 13 correspondingly to the position of the track longitudinal direction, and rotary mirror driving circuit 14 is controlled by the read signal so that the reproducing scan position may agree with the distortion form of the first information track, and the reproducing means is transferred to the second information track near the first information track. COPYRIGHT: (C)1981,JPO&Japio

Inventors

• 👤 Yasuhiro Goto
• 👤 Masahiro Deguchi
• 👤 Noboru Wakami
• 👤 Mitsuro Moriya

Bibliographic Details