Dynamic information storage or retrieval – Storage medium structure – Optical track structure
Patent
1996-06-12
1999-02-09
Huber, Paul W.
Dynamic information storage or retrieval
Storage medium structure
Optical track structure
369 30, 369 50, G11B 370
Patent
active
058703756
ABSTRACT:
A disk-shaped recording medium has a groove only one of whose side-walls wobbles or deviates in radial directions of the disk in order to prerecord first address information. In addition, the disk medium has block areas in the groove and in the land where the first address information is given and sector areas provided with second address information for every piece of recording data which is divided into predetermined lengths, wherein `m` pieces of sector areas are allocated for `n` pieces of block areas and recorded in the groove and the land (both n and m are integral numbers, and n is smaller than m). The second address information based on the first address information enables the sectors to be set at any length, and improves reliability of the address information. Moreover, the second address information realizes high density recording using both the land and the groove.
REFERENCES:
patent: 5210738 (1993-05-01), Iwata et al.
patent: 5339302 (1994-08-01), Takahashi et al.
patent: 5377178 (1994-12-01), Saito et al.
patent: 5537373 (1996-07-01), Horikiri
patent: 5568459 (1996-10-01), Takamori et al.
Kojima Kunio
Maeda Shigemi
Conlin David G.
Daley, Jr. William J.
Huber Paul W.
Sharp Kabushiki Kaisha
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