Positioning apparatus for a magnetic head of a magnetic disk drive apparatus
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United States of America Patent
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Jan 21, 1986
Issued Date -
N/A
app pub date -
Jun 17, 1985
filing date -
Jan 9, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A positioning apparatus for a magnetic disk drive apparatus including a biasing means for returning a carriage on which the magnetic head is mounted to a fixed position whenever a power source for the apparatus is cut off, and force compensation circuits operably connected to the carriage for supplying the carriage with an opposite force equivalent to the force of the biasing means as a function of the magnetic head position relative to the disk. The control force compensation circuits the speed of the carriage as it changes position from one track to another track and maintain the magnetic head in proper position over the selected track once it is reached.
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