Dynamic magnetic information storage or retrieval – General recording or reproducing – Specifics of equalizing
Patent
1996-04-18
1999-01-19
Hindi, Nabil
Dynamic magnetic information storage or retrieval
General recording or reproducing
Specifics of equalizing
375341, G11B 05035
Patent
active
058620079
ABSTRACT:
A method and apparatus is disclosed for removing transient DC level shifts caused by thermal asperities (TAs), thereby reducing TA induced errors. Read signal generated by a Magneto resistive (MR) is input to a continuous time filter and a sampler. Sampler output is input to a 1-D sampled filter which performs level equalization to remove DC Shift cased by TA disturbance. Sampled filter output is input to MUX along with sampler outputs. MUX selects sampled filter output during TAs. MUX output is input to a FIR filter and Viterbi decoder. Gain and Timing loop tracking and acquisition blocks receive sampler and FIR filter output and output correction signals for use by VGA and phase/frequency Detector.
REFERENCES:
patent: 5233482 (1993-08-01), Galbraith et al.
patent: 5301080 (1994-04-01), Ottesen et al.
patent: 5335121 (1994-08-01), Bombeeck
patent: 5367409 (1994-11-01), Ottesen et al.
patent: 5388127 (1995-02-01), Scarpa
patent: 5497111 (1996-03-01), Cunningham
patent: 5566101 (1996-10-01), Kodra
patent: 5590154 (1996-12-01), Forni et al.
Bui Khoa
Lin Kingston
Pham Bac
Hindi Nabil
Samsung Electronics Co,. Ltd.
Wamsley Patrick
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