Sampled amplitude read channel for reading user data and embedde

Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data clocking

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Details

360 61, 360 75, G11B 509, G11B 1512, G11B 2102

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active

061081515

ABSTRACT:
A sampled amplitude read channel is disclosed for reading data recorded on a disk storage medium by detecting an estimated binary sequence from a sequence of discrete time sample values generated by sampling pulses in an analog read signal from a read head positioned over the disk storage medium. The read channel comprises a sampling device, such as an analog-to-digital converter (A/D), for sampling the analog read signal to generate the discrete time sample values and for sampling at least one other auxillary analog input signal, such as a servo control signal. In this manner, performance characteristics of the read channel can be measured, such as the driving current applied to the servo control voice coil motor (VCM), without requiring additional hardware.

REFERENCES:
patent: 4979055 (1990-12-01), Squires et al.
patent: 5089757 (1992-02-01), Wilson
patent: 5231545 (1993-07-01), Gold
patent: 5258933 (1993-11-01), Johnson et al.
patent: 5260976 (1993-11-01), Dolivo et al.
patent: 5297184 (1994-03-01), Behrens et al.
patent: 5311178 (1994-05-01), Pan et al.
patent: 5329251 (1994-07-01), Llewellyn
patent: 5341249 (1994-08-01), Abbott et al.
patent: 5359631 (1994-10-01), Behrens et al.
patent: 5384671 (1995-01-01), Fisher
patent: 5406427 (1995-04-01), Shimoda
patent: 5420893 (1995-05-01), Ward
patent: 5424881 (1995-06-01), Behrens et al.
patent: 5438460 (1995-08-01), Coker et al.
patent: 5448571 (1995-09-01), Hong et al.
patent: 5459769 (1995-10-01), Ziperovich
patent: 5502408 (1996-03-01), Scholz
patent: 5606468 (1997-02-01), Kodama
patent: 5854714 (1998-12-01), Reed et al.
Edward A. Lee and David G. Messerschmitt, "Timing Recovery," Digital Communications, Chapter 15, pp. 560-585, Kuwer Academic Publishers, Boston, 1988.
Cideciyan et al., "A PRML System for Digital Magnetic Recording," IEEE Journal on Selected Areas in Communications, vol. 10, No. 1, Jan. 1992.
John Vanderkooy and Stanley P. Lipschitz, "Resolution Below the Least Significant Bit in Digital Systems with Dither," J. Audio Eng. Soc., vol. 32, No. 3, Mar. 1984.

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