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US 6,714,373 B1Granted
Magnetic disk device having an improved seek control
AssigneeFujitsu Limited
InventorKiyotaka Sasaki
Life of this patent
Estimating the term…
Abstract
A magnetic disk device has an improved seek control in which a waiting time occurred in a first magnetic head while it is scanning a first track, is utilized efficiently and effectively by activating a second magnetic head such that the second magnetic head scans a second track during the waiting time of the first magnetic head.
Claims9
A disk storage device storing information on a rotary recording disk, comprising:
- a rotary recording disk;
- a plurality of heads each scanning over a corresponding recording surface of said rotary recording disk generally in a radial direction of said rotary recording disk;
- and
- a control circuit controlling a scanning motion of said heads such that one of said heads scans a selected region of a selected track, said control circuit comprising a seek control circuit,
- said seek control circuit detecting occurrence of a waiting time in which said one of said heads waits on said selected track for a rotation of said rotary disk until said selected region comes to a position ready for scanning by said head, said seek control circuit further causing another head to scan a different part of said rotary disk different from said selected region during said waiting time,
- said control circuit further causing said another head to read data from said different part of said rotary disk during said waiting time as said another head scans over said different part and caching said data in a buffer memory.
3 more elements
A method of optimizing a seek operation of a disk storage device, comprising the steps of;
- causing a seek operation in a first head to scan a first track;
- detecting occurrence of a waiting time for said first head on said first track;
- and
- causing a second head, in response to a detection of occurrence of said waiting time, to scan a second track during an interval corresponding to said waiting time.
1 more element
Dependencies are inferred from the claim text.