Data read apparatus and data read method

Details Data read apparatus and data read method Data read apparatus and data read method

1998-01-20

2000-07-11

Chung, Phung M.

Error detection/correction and fault detection/recovery

Pulse or data error handling

Testing of error-check system

714704, 714712, G06F 1100

Patent

active

060888180

ABSTRACT:
To decrease the number of read errors of a storage device due to bus noise when data is transferred between a host apparatus and the storage device. When a read error due to bus noise is detected, transfer of data to a host apparatus is temporarily stopped when executing rereading to eliminate bus noise which is a cause of the read error. In a preferred embodiment bus noise errors are distinguished by looking at the frequency of errors and the retry count for the previous error. The error is detected as a bus noise error if the frequency is above a threshold and the retry count is below a threshold. Data transfer can be restarted when a buffer becomes full or when the reading of the data is successfully completed.

REFERENCES:
patent: 5566296 (1996-10-01), Ohmori et al.

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