| 摘要 |
PURPOSE:To attain regeneration of a difference speed from a recording speed stably by providing a jumping command circuit, etc., and by make a scan jump to a fixed tack definitely. CONSTITUTION:When a jumping synchronizing is inputted to (a) under jumping control, jumping command circuit 22 outputs a jumping command and jumping voltage generating circuit 23 generates a jumping voltage. Light beam 2 is reflected by full reflex mirror 5 provided to tracking element 15 in a direction perpendicular to the track direction on carrier 7 to cross adjoining tracks in sequence. On confirming that the light beam has reached an assigned track, jumping stop pulse generating circuit 21 generates a jumping stop pulse, so that light beam 2 will scan on the assigned track. In this way, a jumping scan is made definitely to regenerate stably signals at a different speed from a recording speed. |
