Patent ID: 6625092
Filing Date: 2003-09-23
Classification: G11B

Abstract:
A data recording/reproducing optical disk comprising:a spiral track spirally formed on a disk; a land portion and a groove portion alternately formed on the spiral track wherein the land and groove portions are alternated in successive rounds of the spiral track; a first recording section formed on the land portion on the spiral track and configured for recording/reproducing data; a second recording section formed on the groove portion on the spiral track and configured for recording/reproducing data; a first half header section formed on the spiral track and positioned adjacent to the first recording section, the first recording section having a first predetermined address (mâˆ’1) which precedes a second predetermined address (m) by one address location, the first half header section being shifted radially outward relative to the first recording section, and storing an address (m+N) which is different from the second predetermined address (m) by one rotation of a track; and a second half header section formed on the spiral track and positioned adjacent to the second recording section, the second half header section being shifted radially inward relative to the first half header section in a zigzag manner, and storing the second predetermined address (m).