Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Control of information signal processing channel
Reexamination Certificate
2005-11-29
2005-11-29
Klimowicz, William (Department: 2652)
Dynamic information storage or retrieval
Control of storage or retrieval operation by a control...
Control of information signal processing channel
C369S047170, C369S053330
Reexamination Certificate
active
06970406
ABSTRACT:
An information playback apparatus of the present invention is provided with: a first detecting unit for supplying a difference between respective output signals optically obtained by a pair of detectors for reading the information of the first track; a second detecting unit for supplying a difference between respective output signals optically obtained by a pair of detectors for reading the information of the second track adjacent to the first track; a first demodulating unit for demodulating a detected signal supplied from the first detecting unit, a second demodulating unit for demodulating a detected signal supplied from the second detecting unit. A coefficient controlling unit extracts the crosstalk caused by the second track, which is included in a demodulation signal obtained by the first demodulating unit, from the same signal and controls a coefficient based on the extracted crosstalk, and cancels the crosstalk by the calculated coefficient.
REFERENCES:
patent: 5280466 (1994-01-01), Tomita
patent: 5587985 (1996-12-01), Sano et al.
patent: 5729514 (1998-03-01), Horigome et al.
patent: 6614745 (2003-09-01), Takeda et al.
patent: 8-249668 (1996-09-01), None
patent: 10-069646 (1998-03-01), None
patent: 2000-163809 (2000-06-01), None
patent: 2001-34977 (2001-02-01), None
patent: WO 99/48091 (1999-09-01), None
Kuribayashi Hiroki
Ogawa Hiroshi
Yanagisawa Takuma
Chow Lixi
Drinker Biddle & Reath LLP
Klimowicz William
Pioneer Corporation
Sony Corporation
LandOfFree
Information playback apparatus, signal processing apparatus,... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Information playback apparatus, signal processing apparatus,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Information playback apparatus, signal processing apparatus,... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3509019