Disk data storage apparatus and method using multiple head...

Details Disk data storage apparatus and method using multiple head... Disk data storage apparatus and method using multiple head...

2006-09-05

2006-09-05

Wellington, Andrea (Department: 2627)

Dynamic magnetic information storage or retrieval

General recording or reproducing

Signal switching

C360S078120

Reexamination Certificate

active

07102842

ABSTRACT:
A multi-head actuator data storage device reads and writes data simultaneously to one of a plurality m of heads, the plurality of m heads mounted on each of n head actuators where the plurality of n head actuators are separated from each other by an angular separation distance of 360
degrees. The data on the disk is organized into a plurality of logical sectors, each logical sector comprising n ordered physical sectors, where the plurality n of ordered physical sectors is separated by the same angular distance separating the head actuators. During a write operation, each head actuator independently seeks to a unique physical sector, and the order of the physical sectors is communicated to a data de-multiplexer which writes de-multiplexed data to the physical sectors in a predetermined order. During a read operation, each head actuator independently seeks to a unique physical sector selected for minimum access time, and the order of the physical sectors is communicated to the data multiplexer such that the predetermined order is preserved during the multiplexing of the data arriving from the n head actuators simultaneously.

REFERENCES:
patent: 5375020 (1994-12-01), Aggarwal et al.
patent: 6061194 (2000-05-01), Bailey
patent: 6437937 (2002-08-01), Guo et al.

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