Patent ID: 6233110
Filing Date: 2001-05-15
Classification: G11B

Abstract:
A disc driving device for removably accommodating a disc-type recording medium including a hub having a center opening and a chuck hole at a pre-determined distance from said center opening, and a recording disc attached to said hub; said disc driving apparatus comprising:a disc table having a major surface for loading the hub of the recording disc thereon:a spindle shaft provided on the major surface of the disc table and adapted for being fitted in said center opening in said hub;a chuck member provided on said major surface of said disc table for rotation relative to the major surface and adapted for being fitted in said chuck hole in said hub;a spindle motor for rotating said disc table;a head for recording/reproducing information signals for said recording disc loaded on said disc table;loading means for moving said recording disc between a loading position and an unloading position; andcontrol means for controlling a rotational velocity of said disc table,said control means controlling said spindle motor so that, when the recording disc is moved by said loading means to said loading position, the recording disc is rotated at a first rotational velocity during a first period and subsequently at a second rotational velocity slower than said first rotational velocity.