Dynamic information storage or retrieval – Storage medium structure – Optical track structure
Patent
1997-07-25
1999-08-10
Hindi, Nabil
Dynamic information storage or retrieval
Storage medium structure
Optical track structure
369 4413, G11B 700
Patent
active
059369337
ABSTRACT:
A disk-like information recording medium includes recording areas provided in both of a groove portion and a land portion. The information recording medium is divided into groups of a plurality of areas, each track is divided into circular arc-shaped sectors having the same central angle arranged to be radial in the radius direction, identification information is provided at every sector, each track is divided into groups in such a manner that lengths of the circular arc-shaped sectors become almost constant among the groups, and the groove portion and the land portion are wobbled in the radius direction of the information recording medium. When the groove portion information track and the land portion information track which are the recording portions are wobbled in the radius direction, position information can be reliably obtained from the recording portions, and hence recorded information can be accessed reliably. Also, an accuracy with which the rotation of the information recording medium is controlled can be raised, and it becomes possible to position recorded information accurately.
REFERENCES:
patent: 5023856 (1991-06-01), Raaymakers et al.
patent: 5210660 (1993-05-01), Hetzler
patent: 5444687 (1995-08-01), Okumura
patent: 5463604 (1995-10-01), Naito
patent: 5463614 (1995-10-01), Morita
patent: 5508985 (1996-04-01), Fairchild et al.
patent: 5508995 (1996-04-01), Moriya et al.
patent: 5537373 (1996-07-01), Horikiri
patent: 5724338 (1998-03-01), Birukawa et al.
patent: 5742578 (1998-04-01), Kumai et al.
patent: 5742582 (1998-04-01), Suzuki
patent: 5754506 (1998-05-01), Nagasawa et al.
patent: 5754522 (1998-05-01), Kobayashi et al.
patent: 5796711 (1998-08-01), Tomita et al.
patent: 5809006 (1998-09-01), Davis et al.
Fushimi Tetsuya
Minemura Hiroyuki
Miyamoto Harukazu
Sugiyama Hisataka
Suzuki Motoyuki
Hindi Nabil
Hitachi , Ltd.
LandOfFree
Information recording medium and method and apparatus for record does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Information recording medium and method and apparatus for record, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Information recording medium and method and apparatus for record will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1126766