Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Reexamination Certificate
2007-03-27
2007-03-27
Dinh, Tan (Department: 2627)
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
C369S013210
Reexamination Certificate
active
10089409
ABSTRACT:
On a pit information surface (22d) of a read-only optical disk (22), a protective layer (22f) suited for a floating-type or a sliding-type magnetic head (3) used for a magnetic field modulation type magneto-optical disk is formed. A reproducing operation with respect to the optical disk (22) is performed while allowing the magnetic head (3) to slide on the protective layer (22f). Accordingly, a magnetic head does not need to be separated from a disk in reproduction. Thus, an optical disk device can be manufactured at lower cost and reduced in size, and a high-speed seek can be realized. Commonality of a disk cartridge (32) with the magnetic field modulation type magneto-optical disk also can be achieved. An optical disk system that is user-friendly thus can be obtained.
REFERENCES:
patent: 5309421 (1994-05-01), Fujisawa
patent: 5527479 (1996-06-01), Nagataki et al.
patent: 5540988 (1996-07-01), Tachibana et al.
patent: 5568466 (1996-10-01), Komaki et al.
patent: 5608717 (1997-03-01), Ito et al.
patent: 5608718 (1997-03-01), Schiewe
patent: 5663211 (1997-09-01), Kominami et al.
patent: 5748607 (1998-05-01), Ohira et al.
patent: 5764619 (1998-06-01), Nishiuchi et al.
patent: 5904969 (1999-05-01), Kamezaki et al.
patent: 5912061 (1999-06-01), Uchida et al.
patent: 5959948 (1999-09-01), Oshima
patent: 6044043 (2000-03-01), Aoki et al.
patent: 6333900 (2001-12-01), Maro et al.
patent: 6625107 (2003-09-01), Kawano
patent: 0 473 305 (1992-03-01), None
patent: 0 586 990 (1994-03-01), None
patent: 0 863 503 (1998-09-01), None
patent: 0 974 965 (2000-01-01), None
patent: 1 067 519 (2001-01-01), None
patent: 63-113992 (1988-05-01), None
patent: 1-282757 (1989-11-01), None
patent: 2-239440 (1990-09-01), None
patent: 3-125352 (1991-05-01), None
patent: 3-157837 (1991-07-01), None
patent: 4-103079 (1992-04-01), None
patent: 5-36234 (1993-02-01), None
patent: 5-89523 (1993-04-01), None
patent: 5-274739 (1993-10-01), None
patent: 5-342684 (1993-12-01), None
patent: 6-139737 (1994-05-01), None
patent: 7-044912 (1995-02-01), None
patent: 10-308036 (1998-11-01), None
patent: 2001-6210 (2001-01-01), None
Aikoh Hideki
Nakamura Tohru
Dinh Tan
Hamre Schumann Mueller & Larson P.C.
Matsushita Electric - Industrial Co., Ltd.
LandOfFree
Magneto-optical disk with protective layer, and optical disk... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magneto-optical disk with protective layer, and optical disk..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magneto-optical disk with protective layer, and optical disk... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3775748