Patent ID: 6233649
Filing Date: 2001-05-15
Classification: G11B

Abstract:
A method of reproducing digital signals recorded on a disk,the disk having at least a first recording surface and a second recording surface,the digital signals being in the form of a data frame,the data frame including at least a lead-in block and n data blocks (n is a natural number),the lead-in block having a same format as the n data blocks,n block addresses being assigned to respective ones of the n data blocks,information identifying an area on the disk in which a respective one of the n data blocks is recorded being assigned to each of the n data blocks,m data blocks (m is a natural number, 0<m<n) of the n data blocks being recorded on the first recording surface of the disk,remaining (n-m) data blocks of the n data blocks being recorded on the second recording surface of the disk,the lead-in block being recorded at the head of the data frame, the lead-in block includingrecording area identifying information identifying an area on the disk in which the lead-in block is recorded, anddisk information identifying (1) a number of recording surfaces, (2) the block address of one of the m data blocks recorded last on the first recording surface, and (3) the block address of a last one of the n data blocks in the data frame,the method comprising the steps of:detecting and reproducing the lead-in block recorded on the disk using the recording area identification included in the lead-in block;detecting the disk information included in the reproduced lead-in block;accessing and reproducing the data blocks recorded on the disk;detecting the block addresses of the reproduced data blocks; andcontrolling the accessing and reproducing step based on the detected disk information included in the reproduced lead-in block and the detected block addresses of the reproduced data blocks.