Data recovery

Details Data recovery Data recovery

2005-06-14

2005-06-14

JeanPierre, Peguy (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S156000

Reexamination Certificate

active

06906654

ABSTRACT:
Encoded data is decoded by a receiver for an analogue input signal that is converted into a digital signal. A detector produces a sequence of data representative of the analogue signal, a decoder for the sequence of data outputs data indicating that a sequence includes an error. An event detector detects an event which substantially alters or destroys the analogue input signal. The decoder outputs data corresponding to the or each sequence resulting from the altered or destroyed analogue input signal indicating that the sequence is incorrect.

REFERENCES:
patent: 5373513 (1994-12-01), Howe et al.
patent: 6617985 (2003-09-01), Poeppelman
patent: 0 926 671 (1999-06-01), None
patent: WO 99/18575 (1999-04-01), None
William E. Ryan, Comparative Performance Between Drop-out Detection and Viterbi Reliability Metric Erasure Flagging, Sep. 1992, pp. 2898-2900, IEEE Transactions on Magnetics, vol. 28, No. 5.
Toshihiko Morita et al., ECC-Less LDPC Coding for Magnetic Recording Channels, Sep. 2002, pp. 2304-2306, IEEE Transactions on Magnetics, vol. 38, No. 5.

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