Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2011-07-12
2011-07-12
Klimowicz, William J (Department: 2627)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
C369S044410
Reexamination Certificate
active
07978587
ABSTRACT:
An optical pickup apparatus is provided with a dividing element having a plurality of regions. The dividing element is capable of dividing a light flux reflected by the optical disc into a plurality of light fluxes having different outgoing directions. Each region of the dividing element and light receiving parts of a light detector are structured such that when a target information recording layer of the optical disc is brought into focus, a light flux reflected from the target information recording layer is focused on the light receiving parts of the light detector, and a light flux reflected from other information recording layer than the target information recording layer is not irradiated onto the light receiving parts of the light detector.
REFERENCES:
patent: 4983017 (1991-01-01), Tsuji et al.
patent: 5856961 (1999-01-01), Brazas et al.
patent: 6185167 (2001-02-01), Arai
patent: 6894958 (2005-05-01), Katayama
patent: 7012875 (2006-03-01), Shimano
patent: 7362689 (2008-04-01), Park et al.
patent: 7668064 (2010-02-01), Kaji et al.
patent: 2005/0199778 (2005-09-01), Kadowaki
patent: 2005/0243685 (2005-11-01), Oouchida
patent: 2007/0064573 (2007-03-01), Nagata et al.
patent: 2009/0028036 (2009-01-01), Nishiwaki et al.
patent: 1485828 (2004-03-01), None
patent: 4-119531 (1992-04-01), None
patent: 09-223321 (1997-08-01), None
patent: 2007/105704 (2007-09-01), None
patent: WO 2007/105704 (2007-09-01), None
S. Kano, “Novel One-Beam Tracking Detection Method for Dual-Layer Blu-Ray Discs”, IEICE Technical Report, CPM 2005-149 (Oct. 2005).
Official Action issued Japanese Patent Application No. 2006-283245 on Aug. 17, 2010.
Office Action issued Japanese Patent Application No. 2009-062236 on Nov. 30, 2010.
Kamisada Toshimasa
Kawamura Tomoto
Kitada Yasuo
Konishi Yoshiro
Yamazaki Kazuyoshi
Antonelli, Terry Stout & Kraus, LLP.
Fischer Mark L
Hitachi Media Electronics Co. Ltd.
Klimowicz William J
LandOfFree
Optical pickup apparatus and optical disc apparatus with a... 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 pickup apparatus and optical disc apparatus with a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical pickup apparatus and optical disc apparatus with a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2721794