Patent ID: 6259658
Filing Date: 2001-07-10
Classification: G11B

Abstract:
A data recording/reproducing optical disk comprising:a land portion spirally formed on the disk;first recording sections formed along the land portion and configured for recording/reproducing data;a groove portion spirally formed on the disk and positioned adjacent to the land portion, the land portion and the groove portion forming spiral tracks;second recording sections formed along the groove portion and configured for recording/reproducing data, the second recording sections being positioned adjacent to the first recording sections, at least one of the second recording sections having a first predetermined address (m);a first half header section formed on the disk and positioned adjacent to at least one of the first recording sections, the at least one first recording section having a second predetermined address (m-1) which precedes the first predetermined address (m) by one address location;wherein the first half header section is shifted radially outwardly relative to the at least one first recording section and stores an address (m+N), the stored address (m+N) being different from the predetermined address (m) by one rotation of a track; anda second half header section formed on the disk and positioned adjacent to the at least one second recording section;wherein the second half header section stores the predetermined address (m) and is shifted radially inwardly relative to the first half header section in a zigzag manner.