Patent ID: 6621783
Filing Date: 2003-09-16
Classification: G11B

Abstract:
A method of retrieving disk information from an optical disk comprising the steps of:accessing a given location within an innermost lead-in area of a CD-RW disk, to retrieve a starting time of the innermost lead-in area from ATIP information; accessing a starting point of a PMA area of the disk, on the basis of the starting time of the innermost lead-in area, to retrieve PMA information; on the basis of a time interval between adjoining tracks represented by the PMA information, dividing the tracks into a plurality of sessions and accessing a lead-in area of a last one of the sessions to determine presence/absence and validity of lead-in information in the last session; and only when the lead-in information of the last session is judged to be valid, retrieving the lead-in information of the last session as valid lead-in information.