Dynamic information storage or retrieval – Storage medium structure – Optical track structure
Patent
1997-01-22
1998-12-22
Neyzari, Ali
Dynamic information storage or retrieval
Storage medium structure
Optical track structure
3692751, 369278, G11B 724
Patent
active
058525998
ABSTRACT:
A magneto-optical disk 1 has a track, wherein one of the sidewalls (sidewall 4) of a groove 2 is wobbled by a wobble signal, and is provided with a notch 5 in the track having a different frequency from the wobble signal. The absolute position of the magneto-optical disk 1 is detected with a sample bit stored by the notch 5 of the track, and an information bit is stored with a recording/reproducing clock synchronizing with that position. By forming the notch 5 in this manner, information can always be recorded at the same information bit position, regardless of how many times information is rewritten. Therefore, a gap area and a buffer area, which have conventionally been essential, are not needed on the optical disk. Consequently, it is possible to use a recording area effectively.
REFERENCES:
patent: 5210738 (1993-05-01), Iwata et al.
patent: 5315567 (1994-05-01), Fuji et al.
patent: 5339302 (1994-08-01), Takahashi et al.
patent: 5377178 (1994-12-01), Saito et al.
patent: 5506824 (1996-04-01), Fairchild et al.
patent: 5696752 (1997-12-01), Hajjar et al.
Conlin David G.
Neuner George W.
Neyzari Ali
Sharp Kabushiki Kaisha
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