Dynamic information storage or retrieval – Storage medium structure – Optical track structure
Reexamination Certificate
2007-02-13
2007-02-13
Dinh, Tan (Department: 2627)
Dynamic information storage or retrieval
Storage medium structure
Optical track structure
C369S275100
Reexamination Certificate
active
10419149
ABSTRACT:
An information recording medium is at least composed of a substrate having a microscopic pattern constituted by a continuous substrate of grooves formed with a groove portion and a land portion alternately, a recording layer formed on the microscopic pattern for recording information, and a light transmitting layer formed on the recording layer. The microscopic pattern is formed with satisfying a relation of P≦λ/NA, wherein P is a pitch of the land portion or the groove portion, λ is a wavelength of reproducing light for reproducing the recording layer, and NA is a numerical aperture of an objective lens. The land portion is formed with wobbling so as to be parallel with each other for both sidewalls of the land portion. An auxiliary information based on data used supplementally when recording the information and a reference clock based on a clock used for controlling a recording speed when recording the information is recorded alternately. Information is recorded in the recording layer corresponding to only a land portion by at least either one change of reflectivity difference and refractive index difference in the recording layer so as to be more than 5% for reflectivity and so as to be more than 0.4 for modulated amplitude of signal recording.
REFERENCES:
patent: 5933410 (1999-08-01), Nakane et al.
patent: 6693873 (2004-02-01), Kondo et al.
patent: 6873595 (2005-03-01), Kondo et al.
patent: 6982127 (2006-01-01), Kondo et al.
patent: 2002/0110067 (2002-08-01), Kondo et al.
patent: 2003/0053405 (2003-03-01), Kondo
patent: 2003/0058782 (2003-03-01), Kondo
patent: 2003/0165095 (2003-09-01), Iimura et al.
patent: 2778405 (1998-05-01), None
patent: 2797035 (1998-07-01), None
patent: 11-259985 (1999-09-01), None
patent: 11-346154 (1999-12-01), None
patent: 2000-228064 (2000-08-01), None
patent: 2000-286709 (2000-10-01), None
patent: 2000-332613 (2000-11-01), None
patent: 2001-110146 (2001-04-01), None
patent: 2001-186027 (2001-07-01), None
Narahara et al. “Optical Disc System for Digital Video Recording ” SPIE vol. 3864 International Symposium on Optical Memory and Optical Data Storage (1999), pp. 50-52.
Kondo Tetsuya
Oishi Kenji
Connolly Bove & Lodge & Hutz LLP
Dinh Tan
Victor Company of Japan Ltd.
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