Optical disc

Details Optical disc Optical disc

1997-03-24

1998-08-11

Hindi, Nabil

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

3692753, 369 47, G11B 700

Patent

active

057937389

ABSTRACT:
An 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.

REFERENCES:
patent: 5488595 (1996-01-01), Takeuchi et al.
patent: 5539723 (1996-07-01), Hoshino et al.
patent: 5568459 (1996-10-01), Takamori et al.
patent: 5587992 (1996-12-01), Hayashi

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