1995-07-07
1997-12-16
Hafiz, Tariq R.
395 23, 395 24, G06E 100, G06F 1518
Patent
active
056994877
ABSTRACT:
A magnetic read channel employs an artificial neural network for reconstruction of a recorded magnetic signal and its corresponding synchronization signal. A magnetic read head receives magnetic signals from a magnetic recording media such as a magnetic tape or disk and converts it to an electronic signal. A preamplifier receives and amplifies the electronic signal from the magnetic read head to produce an amplified electronic signal. A delay line receives the amplified electronic signal from the preamplifier, storing delayed successive representations of the received signal. An artificial neural network receives the delayed successive representations from the delay line for reconstruction of the originally recorded data signal. Prior to use in an application, the artificial neural network is trained via a training method with a known training set of corresponding simultaneously generated data and clock pairs. Training the network with data having such known clock (synchronization) signal enables extraction of the synchronization signal from its nonlinear properties hidden within its corresponding data.
REFERENCES:
patent: 5151970 (1992-09-01), Engeler
patent: 5247605 (1993-09-01), Engeler
patent: 5594597 (1997-01-01), Padden
1994 IEEE Globecom. Communications: The Global Bridge. "Artificial Neural Networks For Smart Detection Of Digitally Modulated Signals", pp. 1029-1033, vol. 2 by Horst J. Bessai and Werner Lorek.
Sixth Joint Magnetsim and Magnetic Materials, vol. 30, No. 6, pt. 1, ISSN 0018-9464, IEEE Transactions On Magnetics, Nov. 1994, USA, pp. 4221-4223, "Improved Equalization For Digital Recording Using Nonlinear Filtering And Error Confinement", by Nair, et al.
Patent Abstracts of Japan, vol. 017, No. 384 (p-1575), 19 Jul. 1993 JP-A-05 062365 (Fujitsu Ltd), 12 Mar. 1993.
Patent Abstracts Of Japan, vol.018, No.121 (P-1700), 25 Feb. 1994, JP-A-05 307622 (Victor Co of Japan Ltd), 19 Nov. 1993.
Nair, S.K. and Moon, J., "Improved Equalization for Digital Recording Using Nonlinear Filtering and Error Confinement," IEEE Transactions on Magnetics, vol. 30, No. 6 (Nov. 1994), pp. 4221-4223.
Borisyuk, "A model of the neural network for storage and retrieval of temporal sequences"; Neuroinormatics and Neurocomputers, 1992 RNNS/IEEE Symposium, vol. 2, pp. 865-869, Oct. 1992.
Lee, "Neural net equalization for a magnetic recording channel"; Conference Record of the twenty-seventh Asilomar Conference on signals, systems and computers, pp. 369-374 vol. 1, Nov. 1993.
Nair et al, "Improved equalization for digital recording using nonlinear filtering and error confinement"; IEEE Transactions on Magnetics, vol. 30 Iss. 6, pt. 1 pp. 4221-4223, Nov. 1994.
Hafiz Tariq R.
Hewlett--Packard Company
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