Error detection/correction and fault detection/recovery – Pulse or data error handling – Error count or rate
Reexamination Certificate
2005-04-05
2005-04-05
Chung, Phung M. (Department: 2133)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Error count or rate
C714S738000
Reexamination Certificate
active
06877116
ABSTRACT:
A system determines bit error rate in a sampled data system having a disc formed of a magnetic medium and a data head for writing data on the disc and retrieving data from the disc. A pattern is written on the disc, which includes isolated instances associated with a predetermined event. The pattern is retrieved from the disc and the isolated instances are combined to obtain a representative instance having a reduced media noise component. The representative instance is combined with each, of the isolated instances to obtain noise sequences. An autocorrelation component is obtained based on the instances read from the disc and the noise sequences. A channel filter is developed having an impulse response based on the representative instance and based on the channel requirements for a predetermined channel model. A representative instance is passed through the filter to obtain a filter output sample, and an error value indicative of the bit error rate is determined based on the filter output sample and the autocorrelation component.
REFERENCES:
patent: 4394695 (1983-07-01), Mahon
patent: 5121263 (1992-06-01), Kerwin et al.
patent: 5600500 (1997-02-01), Madsen et al.
patent: 5727074 (1998-03-01), Hildebrand
patent: 5754353 (1998-05-01), Behrens et al.
patent: 5771127 (1998-06-01), Reed et al.
patent: 5774470 (1998-06-01), Nishiya et al.
patent: 5786954 (1998-07-01), Yada et al.
patent: 5799010 (1998-08-01), Lomp et al.
patent: 5987634 (1999-11-01), Behrens et al.
patent: 6005731 (1999-12-01), Foland, Jr. et al.
Daniel D. Woods, “Comparison and Optimization of Digital Read Channels using Actual Data”, IEEE, 1993.*
Yuanjie Chen and Chrysostomos L. Nikias, “Blind Identifiability of a Band-Limited Nonminimum Pase Sstem from its Output Autocorrelations”, IEEE, 1993.
Kost Robert E.
Zhu Jian-Gang
Chung Phung M.
Kelly Joseph R.
Torres Joseph D.
Westman Champlin & Kelly P.A.
LandOfFree
Method and apparatus for determining bit error rate in 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 Method and apparatus for determining bit error rate in a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for determining bit error rate in a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3436197