Dynamic information storage or retrieval – Storage medium structure – Electrical track structure
Reexamination Certificate
2008-09-16
2008-09-16
Dinh, Tan X (Department: 2627)
Dynamic information storage or retrieval
Storage medium structure
Electrical track structure
C369S126000
Reexamination Certificate
active
10988548
ABSTRACT:
Disclosed herewith is a method for enabling fast and high density recording of information. A voltage is applied to a recording layer formed between a pair of electrodes. The distance between the pair of electrodes is set wider at one of land and groove areas of a subject optical disk and narrower at the other or the distance is set so that light absorption occurs only in either of the land and groove areas. The optical disk is also provided with a layer of which light absorption spectrum changes according to the application of an electric current, thereby absorbing the light. The new layer may be the recording layer itself or a layer adjacent to the recording layer. Because a heat generates only from a small area of the optical disk at the time of recording, the disk can be turned rapidly and permissively to the auto focusing and tracking offsets, thereby enabling fast and high density recording. The disk can thus be formed with easily selectable multiple layers.
REFERENCES:
patent: 3986771 (1976-10-01), Tsukada
patent: 3989530 (1976-11-01), Robillard
patent: 4075610 (1978-02-01), Crandall et al.
patent: 4324622 (1982-04-01), Deb
patent: 4500174 (1985-02-01), Conner
patent: 4701880 (1987-10-01), Ichihara
patent: 4773060 (1988-09-01), Shimada et al.
patent: 4832456 (1989-05-01), Yamazaki et al.
patent: 4842381 (1989-06-01), Green
patent: 4945515 (1990-07-01), Ooumi et al.
patent: 5279932 (1994-01-01), Miyasaka et al.
patent: 5430705 (1995-07-01), Takanashi et al.
patent: 5629920 (1997-05-01), Sakano et al.
patent: 5717626 (1998-02-01), Aoki et al.
patent: 5903296 (1999-05-01), Shimizu et al.
patent: 6821596 (2004-11-01), Terao et al.
patent: 7203152 (2007-04-01), Van Der Mark et al.
patent: 7263053 (2007-08-01), Terao et al.
patent: 2005/0047309 (2005-03-01), Terao et al.
patent: 2005/0052983 (2005-03-01), Vincent et al.
patent: 2006/0140100 (2006-06-01), Wilderbeek et al.
patent: 2007/0086316 (2007-04-01), Hirotsune et al.
patent: 2007/0247999 (2007-10-01), Mukoh et al.
patent: 60-117431 (1985-06-01), None
patent: 63-122032 (1986-11-01), None
patent: 04-319545 (1991-04-01), None
patent: 10-260432 (1997-03-01), None
patent: 11-185288 (1997-12-01), None
patent: 2001-344807 (2000-06-01), None
M. Terao, H. Yamamoto, and E. Maruyama, “Highly Sensitive Amorphous Optical Memory”, 1973, Supplement to the Journal of the Japan Society of Applied Physics, vol. 42, p. 233-238.
Kojima Kyoko
Miyamoto Harukazu
Shintani Toshimichi
Terao Motoyasu
Tsuchiya Yuko
A. Marquez, Esq. Juan Carlos
Dinh Tan X
Fisher Esq. Stanley P.
Hitachi , Ltd.
Reed Smith LLP
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