Dynamic information storage or retrieval – Storage medium structure – Optical track structure
Reexamination Certificate
2011-08-02
2011-08-02
Huber, Paul (Department: 2627)
Dynamic information storage or retrieval
Storage medium structure
Optical track structure
C369S124040
Reexamination Certificate
active
07990837
ABSTRACT:
A visible pattern is obtained by modulating the digital sum value. Because the digital sum value modulation allows the choice of several different channel bits groups between DC control points, the selection of a group of channel bits resulting in a change of reflection. This creation of a visible pattern is highly suitable for Blueray as the parity preserving property of the channel code guarantees disparity inversion by the DC-control bit, which keeps the DSV excursions between hard limits. As a result only small DSV deliberate variations are required to produce a visual watermark, which will not deteriorate the bit-detection margin of the optical disc.
REFERENCES:
patent: 6496541 (2002-12-01), Kahlman et al.
patent: 2004/0027940 (2004-02-01), Minamino et al.
patent: 2005/0152255 (2005-07-01), Kihara et al.
patent: 2005/0265156 (2005-12-01), Nakane et al.
patent: 0643391 (1995-03-01), None
patent: 1603132 (2005-12-01), None
patent: 0241316 (2002-05-01), None
patent: 2004042729 (2004-05-01), None
patent: 2005071676 (2005-08-01), None
patent: 2007145626 (2007-12-01), None
Den Hollander Jacobus Maarten
Kahlman Josephus Arnoldus Henricus Maria
Huber Paul
Koninklijke Philips Electronics , N.V.
LandOfFree
Optical disc comprising a watermark and a method and... 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 disc comprising a watermark and a method and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disc comprising a watermark and a method and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2773559