Dynamic information storage or retrieval – Systems having plural physically distinct independent tracks... – Having layered storage medium
Reexamination Certificate
2006-11-08
2011-11-08
Haley, Joseph (Department: 2627)
Dynamic information storage or retrieval
Systems having plural physically distinct independent tracks...
Having layered storage medium
C369S044370, C369S118000
Reexamination Certificate
active
08054727
ABSTRACT:
An information recording medium of the present invention is an information recording medium characterized by and including a substrate; and a recording unit capable of recording three-dimensionally a recording pit on the substrate; in which the recording unit has n number of recording layers (n is an integer equal to or larger than 4) and a plurality of intermediate layers laminated with the recording layers one on another; the recording is performed by the condensed recording light using a two photon absorption phenomenon; each of the plurality of intermediate layers is substantially transparent at a wavelength λ1of the recording light and at a wavelength λ2of the reproduction light, respectively; the light intensity of the recording light incident into the recording layer nearest to the substrate is more than 0.707 fold as much as the light intensity of the recording light incident into the recording layer farthest from the substrate. The information recording medium is an information recording medium capable of maintaining a precise and good recording accuracy at the recording layer positioned lower away from the objective lens while it secures the focus servo reflected light.
REFERENCES:
patent: 6009065 (1999-12-01), Glushko et al.
patent: 7763439 (2010-07-01), Meltola et al.
patent: 2005/0157629 (2005-07-01), Shiono et al.
patent: 2006/0072437 (2006-04-01), Shiono et al.
patent: 2007/0053279 (2007-03-01), Magnitskii et al.
patent: 7-326074 (1995-12-01), None
patent: 2004-149501 (2004-05-01), None
patent: 2004-259369 (2004-09-01), None
patent: 2005-92074 (2005-04-01), None
patent: 2005-222568 (2005-08-01), None
patent: 2004/036569 (2004-04-01), None
patent: 2004/107040 (2004-12-01), None
International Search Report issued Feb. 13, 2007 in International (PCT) Application No. PCT/JP2006/322293.
Yoshimasa Kawata, “Three-dimensional Optical Memory using a Femt-second Laser”, Optronics No. 11, pp. 138-142 (2001).
Yoshimasa Kawata et al., “Three-dimensional optical memory using an organic multilayered medium”, Optics Japan 2000 Extended Abstract, pp. 95-96 (2000).
Haley Joseph
Panasonic Corporation
Wenderoth , Lind & Ponack, L.L.P.
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