| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical disc that minimizes overhead in the address storage region and improve physical format application efficiency to assure easier address read operation. SOLUTION: An address information is composed of a plurality of bits and the first bit is formed through wobble superimposition of the address information of the combination (A0, B0), while the second bit through that of the combination (A1, B1) and the third bit through that of the combination (A1, B1). Namely, as the address information, the address AD0 of the first bit is bit '0', while the address AD1 of the second bit is bit '1' and the address AD2 of the third bit is bit '1'. The expression system of this address information is an improved AM type wobble address that is applied through superimposition to the wobble of the track groove of the address information in the actual physical format of an optical disc using OOK(On Off-Keying) as the digital modulation format of the AM(Amplitude Modulation) system. |
