Patent ID: 6021101
Filing Date: 2000-02-01
Classification: G11B

Abstract:
An optical information recording/reproduction apparatus for recording information to and reproducing information from an optical disk which includes on a same plane a first track formed into a groove-like shape; and a second track formed into a land-like shape, said apparatus comprising:an optical head which causes irradiation of said first and second tracks with a light beam and for obtaining a signal responsive thereto;track designation means for designating said first or second tracks for recordation or reproduction by selectively signalling to invert polarity of a tracking error signal;focusing means for focusing the light beam on said first or second tracks;tracking means for tracking the light beam on said first or second tracks;track search means for moving said optical head to search said first or second tracks;signal generation means for amplifying said signal, said signal including an address signal;address reproduction means for processing said address signal to produce an address output;data recording/reproduction control means for 1) selecting one of said first and second tracks based on said address output and based on which of said tracks is designated by said track designation means, and for 2) causing recordation or reproduction of said selected one of said tracks.