Disk drive initiated data transfers responsive to sequential or

Details Disk drive initiated data transfers responsive to sequential or Disk drive initiated data transfers responsive to sequential or

1997-05-29

2000-03-14

Peikari, B. James

Electrical computers and digital data processing systems: input/

Input/output data processing

Data transfer specifying

710 31, 710 38, 711112, 711110, 712245, G06F 932

Patent

active

060386193

ABSTRACT:
If consecutive read or write requests imposed on a DASD are of the same type and bear a defined sequential logical address relationship (pure sequential, near sequential), then a circular buffered data path using a pair of a synchronously managed read/write ports respectively coupling either a cyclic, concentric, multitracked storage medium or a cyclic, spiral-tracked storage medium and a device interface can continue data streaming unabated. Otherwise, the path would ordinarily have to be disabled and reconnected using a control microprocessor in respect of any random sequence of requests.

REFERENCES:
patent: 4207609 (1980-06-01), Luiz et al.
patent: 4916605 (1990-04-01), Beardsley et al.
patent: 5053945 (1991-10-01), Whisler
patent: 5745793 (1998-04-01), Atsatt et al.
patent: 5872822 (1999-02-01), Bennett
patent: 5878280 (1999-03-01), Lucht

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