Multipath channel apparatus and method for data storage devices

Details Multipath channel apparatus and method for data storage devices Multipath channel apparatus and method for data storage devices

1994-12-19

1996-09-17

Kim, W. Chris

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data verification

360 46, 360 51, 360 61, G11B 509

Patent

active

055574823

ABSTRACT:
A multipath channel apparatus for a data storage device wherein data is stored on a storage medium and is read from the storage medium by a transducer or for a data communications system wherein data is transmitted to a receiver. A data channel having a plurality of data paths is operatively connected to the transducer to receive data read from the storage medium by the transducer, or operatively connected to receive data demodulated by the receiver or base band data received by the receiver. Preferably, each of the data paths has a differing parameter value. An error checking unit checks customer and redundancy data from each of the data paths. A selecting unit, which is responsive to the error checking unit, selects data from one of the data paths. In a preferred embodiment, the data stored on a storage medium includes a data field and an error correcting code field, and the customer and redundancy data from each of the data paths is checked using a calculated error correcting code sydrome.

REFERENCES:
patent: 5299070 (1994-03-01), Takahashi et al.
patent: 5414722 (1995-05-01), Tollum
patent: 5434886 (1995-07-01), Kazawa et al.
S. Dines, "Digital Partial Response Technology Comes to Magnetic Disk Drives", Computer Technology Review, vol. 13, No. 6, May 1, 1993, pp. 40, 42, 44-45.

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