Patent ID: 7127662

Claim:
A method for detecting address information recorded on an optical recording medium, the method comprising: detecting synchronous codes from the wobble signal read from the optical recording medium including a wobble-shaped recording track that is formed thereon based on a wobble signal obtained by modulation of physical address information encoded for insertion as a synchronous code in a head of each sector in an error correction code block unit including a predetermined number of sectors, so as to detect sector-by-sector address information of the error correction code block wherein the error correction code block includes N sectors and the synchronous code of the first sector has a code value different from the synchronous codes of the remaining (N−1) sectors, wherein a synchronous code indicating the first sector in the error correction code block and (N−1) of the same synchronous codes, respectively, indicating the remaining sectors other than the first sector are detected from the wobble signal read from the optical recording medium, and the detected codes are counted to detect sector-by-sector address information; detecting address information of the error correction code block, from remaining portions of the wobble signal other than the synchronous codes; and obtaining physical addresses of the optical recording medium by combining the detected sector-by-sector address information with the detected address information of the error correction code block.