Dynamic information storage or retrieval – Binary pulse train information signal – Including sampling or a/d converting
Reexamination Certificate
2007-03-14
2010-11-09
Huber, Paul (Department: 2627)
Dynamic information storage or retrieval
Binary pulse train information signal
Including sampling or a/d converting
C369S047350
Reexamination Certificate
active
07830766
ABSTRACT:
A data reproduction apparatus for reproducing recorded data from an optical disk by using a PRML detection method is disclosed that includes an optical head including a light source, an optical system having an objective lens for condensing light emitted from the light source to the optical disk, and a photodetector for receiving light reflected from the optical disk, a signal generation circuit for generating an RF signal from a signal output from the photodetector, a phase correction circuit for correcting phase distortion of the RF signal when the recorded data are recorded in recording marks arranged with a pitch less than a diffraction limit, a clock extraction circuit for extracting a clock from the corrected RF signal, and a decoding circuit for decoding the recorded data from the RF signal in synchronization with the clock extracted by the clock extraction circuit.
REFERENCES:
patent: 5796693 (1998-08-01), Taguchi et al.
patent: 2004/0208106 (2004-10-01), Minemura
patent: 2009/0052595 (2009-02-01), Minemura
patent: 1289120 (2001-03-01), None
patent: 06-183152 (1994-07-01), None
patent: 08-221839 (1996-08-01), None
patent: 11-250493 (1999-09-01), None
patent: 2001-126394 (2001-05-01), None
patent: 2001-250274 (2001-09-01), None
patent: 2001-283523 (2001-10-01), None
patent: 2002-032919 (2002-01-01), None
patent: 2002-319137 (2002-10-01), None
patent: 2003-016733 (2003-01-01), None
patent: 05-205314 (2003-08-01), None
patent: 2004-326839 (2004-11-01), None
Naoki Ide, “Adaptive Partial-Response Maximum-Likelihood Detection in Optical Recording Media,” ISOM2002, pp. 269-271.
Tanabe, T. et al., “Super-Resolution Optical Readout System with Partial Response Maximum Likelihood Detection”, Japanese Journal of Applied Physics, vol. 37, 1998, pp. 2226-2230.
Dickstein & Shapiro LLP
Huber Paul
Ricoh & Company, Ltd.
LandOfFree
Data reproduction method and apparatus, disk, 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 Data reproduction method and apparatus, disk, and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data reproduction method and apparatus, disk, and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4162975