Patent ID: 7502287
Filing Date: 2009-03-10
Classification: G11B

Abstract:
1. An optical disk apparatus for recording data on an optical disk, comprising: synchronization control means which sets a polarity of synchronization information of each of the i-th frame (wherein i is an integer which is 0 or greater) and the (i+1)th frame of a plurality of consecutive frames to either a mark or a space such that a DSV is minimized, sets a polarity of synchronization information of the (i+2)th frame to a polarity opposite to the polarity of the synchronization information of the i-th frame, and sets a polarity of synchronization information of the (i+3)th frame to a polarity opposite to the polarity of the synchronization information of the (i+1)th frame; and an optical pickup for recording data while inserting the synchronization information which is set by the synchronization control means into each frame.