Patent ID: 7414946
Filing Date: 2008-08-19
Classification: G11B

Abstract:
1. A recording medium comprising a recording area, wherein: the recording area includes a first area, a second area which is forward with respect to the first area and a third area which is rearward with respect to the first area, the first area includes a fourth area including N number of frame areas, N being equal to or greater than 2, each of the N number of frame areas includes an area in which a synchronization code sequence and at least a portion of data are to be recorded, the second area includes an area in which a first synchronization code sequence and a fifth synchronization code sequence are to be recorded, the third area includes an area in which a third synchronization code sequence and a fourth synchronization code sequence are to be recorded, characterized in that the synchronization code sequence which is to be recorded in the frame area located at the start of the fourth area is different by a code distance equal to or greater than 2 in NRZI representation from any synchronization code sequence which is to be recorded in any of the N number of frame areas of the fourth area other than the frame area located at the start of the fourth area.