초록 ▼

A hard disk drive system operates from a limited power source to provide for the storage of data on the surface of a rotating hard disk media. An embedded controller incorporates a data channel for transferring data with respect to a hard disk media. The controller includes first and second subsecti

A hard disk drive system operates from a limited power source to provide for the storage of data on the surface of a rotating hard disk media. An embedded controller incorporates a data channel for transferring data with respect to a hard disk media. The controller includes first and second subsections and a power-down circuit for providing separately switchable power from the power source to the first and section subsections. The controller further includes a processor for controlling the power-down circuit. The processor nominally provides a low duty cycle control signal to the power-down circuit for switching the provision of power to the first subsection of the controller.

대표청구항 ▼

[ We claim:] [1.] A method of reducing the power requirement of a disk drive wherein said disk drive includes a rotating data storage disk having a plurality of tracks, each track including a plurality of data sectors each providing for the storage of control data and a plurality of data bytes, each

[ We claim:] [1.] A method of reducing the power requirement of a disk drive wherein said disk drive includes a rotating data storage disk having a plurality of tracks, each track including a plurality of data sectors each providing for the storage of control data and a plurality of data bytes, each data sector having a beginning and an end, and electronic means, coupled to a data transducer, for controlling said transducer, said transducer reading successive data bytes from a data sector as such sector rotates past a predetermined point relative to said data transducer, said method comprising the steps of:a ) providing for the rotation of said rotating storage disk;b) determining a point in time when the control data of a predetermined data sector will rotate past said predetermined point relative to said data transducer;c) applying power to said electronic means at a predetermined period of time in advance of said point in time;d) reading the control data from said predetermined data sector; ande) withdrawing power from said electronic means upon completing the reading of the control data from said predetermined data sector while maintaining data storage disk rotation.