Dynamic information storage or retrieval – Binary pulse train information signal – Including sampling or a/d converting
Reexamination Certificate
2005-04-05
2005-04-05
Huber, Paul W. (Department: 2653)
Dynamic information storage or retrieval
Binary pulse train information signal
Including sampling or a/d converting
C369S124050
Reexamination Certificate
active
06876618
ABSTRACT:
A signal is reproduced from a recording medium. The reproduced signal is sampled in response to a clock signal to get a sampling-resultant signal. A transversal filter includes a delay line having taps and delaying the sampling-resultant signal, multipliers for multiplying only alternate ones among signals appearing at the taps by tap coefficients to get multiplication results, and an adder for adding the multiplication results into a filtering-resultant signal. A temporary decision device operates for calculating a temporary decision value of the filtering-resultant signal according to a temporary decision procedure, for calculating a difference between the temporary decision value of the filtering-resultant signal and an actual value thereof, and for generating an error signal in response to the calculated difference. The tap coefficients used in the transversal filter are controlled in response to the error signal and the reproduced signal to minimize the error signal.
REFERENCES:
patent: 5787118 (1998-07-01), Ueda
patent: 6445662 (2002-09-01), Tonami
patent: 7-192270 (1995-07-01), None
patent: 10-106161 (1998-04-01), None
patent: 10-269701 (1998-10-01), None
patent: 2001-110146 (2001-04-01), None
“A Study of Digital Auto Equalizer and PLL System Using Maximum Likelihood Error for Digital VCRs” by Tonami et al.; IEEE Transactions on Consumer Electronics, vol. .43, No. 3; Aug. 1997; pp., 934-944.
U.S. Appl. No. 09/468,130 (corres. to JP 2001-110146).
Nakamura Hideki
Tonami Junichiro
Huber Paul W.
Victor Company of Japan Ltd.
Woo Louis
LandOfFree
Reproducing 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 Reproducing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reproducing apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3436211