Dynamic information storage or retrieval – Systems having plural physically distinct independent tracks... – Having layered storage medium
Reexamination Certificate
2011-04-05
2011-04-05
Nguyen, Hoa T (Department: 2627)
Dynamic information storage or retrieval
Systems having plural physically distinct independent tracks...
Having layered storage medium
C369S275100, C369S275200, C369S275300
Reexamination Certificate
active
07920454
ABSTRACT:
An optical recording medium wherein a laser beam at a wavelength λ is irradiated and recording and reproducing of information are performed by optical power modulation of binary or more, and when the refraction index of the first substrate being n1, the refraction index of the intermediate layer being n2, the groove depth, the groove width and the track pitch of the first information layer being d1, w1and p1respectively and the groove depth, the groove width and the track pitch of the second information layer being d2, w2and p2respectively, the following conditions are satisfied.in-line-formulae description="In-line Formulae" end="lead"?4λ/16n1≦d1≦7λ/16n1in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?λ/16n2≦d2≦3λ/16n2or 4λ/16n2≦d2≦7λ/16n2in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?0.2≦w1/p1≦0.55in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?0.2≦w2/p2≦0.55in-line-formulae description="In-line Formulae" end="tail"?
REFERENCES:
patent: 5627817 (1997-05-01), Rosen et al.
patent: 6018510 (2000-01-01), Abe et al.
patent: 6221455 (2001-04-01), Yasuda et al.
patent: 6280811 (2001-08-01), Nee
patent: 6353592 (2002-03-01), Kashiwagi et al.
patent: 6721265 (2004-04-01), Fujii et al.
patent: 2002/0021657 (2002-02-01), Lee et al.
patent: 2002/0054983 (2002-05-01), Nishihara et al.
patent: 2003/0235783 (2003-12-01), Liu et al.
patent: 2005/0213467 (2005-09-01), Noda et al.
patent: 1726537 (2006-01-01), None
patent: 0 911 820 (1999-04-01), None
patent: 2702905 (1997-03-01), None
patent: 11-031337 (1999-02-01), None
patent: 2000-082238 (2000-03-01), None
patent: 2000-311384 (2000-11-01), None
patent: 2001-084643 (2001-03-01), None
patent: 2001-101709 (2001-04-01), None
patent: 2002-184032 (2002-06-01), None
patent: 2003-115129 (2003-04-01), None
patent: 2003-123324 (2003-04-01), None
patent: WO00/16320 (2000-03-01), None
patent: WO00/23990 (2000-04-01), None
Sabi et al., Development of Organic Recording Media for Blue High Numerical Aperture Optical Disc System, Sep. 19, 2002, Japanese Journal of Appled Physics vol. 42, pp. 1056-1058.
Yamaguchi et al., 4.7 GB Phase Change Optical Disc with In-Groove Recording, Nov. 24, 1998, Japanese Journal of Appled Physics vol. 38, pp. 1806-1810.
Supplementary European Search Report dated Jul. 30, 2008.
Chinese Office Action dated Jul. 27, 2007.
Iwasa Hiroyuki
Shinkai Masaru
Shinotsuka Michiaki
Dickstein & Shapiro LLP
Nguyen Hoa T
Ricoh & Company, Ltd.
Sasinowski Andrew J
LandOfFree
Optical recording medium, and method and apparatus for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical recording medium, and method and apparatus for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical recording medium, and method and apparatus for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2641134