The present invention relates to a method and an apparatus for controlling the rotation of a turntable, in order to move a disk mounting portion selected among a plurality of disk mounting portions installed on the turntable to a pickup side by a key input signal of a user which includes rotating the...http://www.google.com/patents/US6603721?utm_source=gb-gplus-sharePatent US6603721 - Method and apparatus for controlling the rotation of a turntable which is capable of instantly and accurately moving a disc mounting unit regardless of rotation speed variation or aging of parts