Data storage device and method for spindle power control
OwnerSerge J. Fayeulle, Paul W. Smithinventors
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Abstract
A data storage device including spindle power control to reduce power consumption. The spindle power control includes a read-write control mode and an idle control mode. In the read-write control mode, the spindle motor is energized to rotate a disc at a fill operating speed for read-write operations and in the idle control mode, spindle speed is reduced to provide an idle power mode. The idle power mode provides a desired or steady state fly height spindle speed so that the head glides above the disc surface during an idle period to reduce power consumption. In illustrated embodiments, the disc includes a dedicated glide zone and the head is positioned in the dedicated glide zone during the idle power mode.
Claims15
A data storage device comprising:
- at least one disc coupled to a spindle motor to rotate the at least one disc and the at least one disc including a data zone and a glide zone;
- a head coupled to an actuator assembly operable to position the head relative to the at least one disc for operation;
- spindle control coupled to the spindle motor having a read-write control mode and an idle control mode and the idle control mode energizing the spindle motor to rotate the spindle motor at a lower spindle speed than the read-write control mode;
- and
- position control coupled to the actuator assembly including a read-write position control and an idle position control where the read-write position control positions the head relative to selected data tracks in the data zone of the disc and the idle position control positions the head in the glide zone during an idle mode.
A data storage device comprising:
- at least one disc coupled to a spindle motor to rotate the at least one disc;
- a head coupled to an actuator assembly operable to position the head relative to the at least one disc for operation;
- a read-write activity monitor to monitor read-write activity to detect an idle mode;
- and
- spindle control coupled to the read-write activity monitor having a readwrite control mode and an idle control mode and the idle control mode energizing the spindle motor to rotate the spindle motor at a lower spindle speed than the read-write control mode and at a steady state fly height transition zone spindle speed.
A data storage device comprising:
- at least one disc coupled to a spindle motor to rotate the at least one disc for operation and a head coupled to an actuator assembly operable to position the head relative to the at least one disc for operation;
- and
- spindle power control having an idle control means for reducing spindle motor rotation speed to reduce power consumption during an idle period.
A method for operating a data storage device, comprising steps of:
- powering a spindle motor to rotate at least one disc in a read-write control mode;
- and
- energizing an actuator assembly having a head coupled thereto to move the head to a dedicated glide zone and reducing spindle speed of the spindle motor during an idle period.
Dependencies are inferred from the claim text.