Method of duplicating data on a magnetic disk with reduced duplication time
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United States of America Patent
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-
Mar 28, 1995
Issued Date -
N/A
app pub date -
Aug 26, 1994
filing date -
Jan 10, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for duplicating data on a rotating magnetic disk in sectors on concentric tracks so that the sectors are aligned with each other from track to track and referenced to an index mark. The index mark is sensed as the disk rotates. The time elapsed between sensed index marks is counted to define the angular displacement of the disk. A magnetic head is moved successively to the tracks on the disk. Data to be duplicated is recorded in sequence, sector by sector, on the respective tracks beginning at different offsets from the index mark such that recording begins with the next sector encountered after the head arrives at the respective tracks.
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