| 摘要 |
PCT No. PCT/JP95/01697 Sec. 371 Date Jul. 1, 1996 Sec. 102(e) Date Jul. 1, 1996 PCT Filed Aug. 25, 1995 PCT Pub. No. WO96/06432 PCT Pub. Date Feb. 29, 1996An optical disc has a base formed by resin, and a reflection layer formed on the base. On the base, servo areas where servo pits P1, P2 for providing servo information for sample servo system are formed at predetermined angular positions of respective tracks on the base. Further, data areas where data pits Pd for providing data information accessed by the optical disc drive operative on the basis of the servo pits P1, P2 are formed between the respective servo areas. In addition, in the servo area and the data area which are adjacent to each other, between servo pit P2 disposed at the position closest to the data area and data pit Pd disposed at the position closest to the servo area, anchor pit Pan neglected in the optical disc drive is provided.
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