Quality control in data transfer and storage apparatus

Details Quality control in data transfer and storage apparatus Quality control in data transfer and storage apparatus

2005-04-05

2005-04-05

Chung, Phung My (Department: 2133)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C714S799000, C714S800000, C360S053000

Reexamination Certificate

active

06877127

ABSTRACT:
Data from a host computer is buffered, transferred to a logical formatter, compressed and converted to a format suitable for storage on a magnetic tape before being arranged and written sequentially into a main buffer where parity bytes are added as each row of a dataset is written. A physical formatter takes the data sequentially from the main buffer and writes them as codeword quadsets in plural tape tracks. A determination of whether each codeword quadset is acceptably recorded is made by evaluating each codeword quadset for header and codeword quadset pair errors and combining the evaluations.

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