Storage device and control device
AssigneeFujitsu Limited
InventorTatsuhiko Kosugi
Life of this patent
Estimating the term…
Abstract
A storage device and a control device include a DSP 21, a DSP 22, and a Servo MPU 12 for controlling a position of a head with respect to a storage medium. The Servo MPU 12 instructs the DSP 21 and the DSP 22. The DSP 21 carries out calculation of at least any of a demodulation calculation that is a calculation relating to demodulation of servo information and a digital filter calculation based on the instruction from the Servo MPU 12. The DSP 22 carries out a correction calculation that is a calculation relating to correction of the position based on the instruction from the Servo MPU. The Servo MPU 12 carries out control of the position based on a result of the calculation carried out by the DSP 21 and the DSP 22.
Claims20
A storage device comprising:
- a first digital signal processor;
- a second digital signal processor;
- and
- a first control unit that controls a position of a head with respect to a storage medium, wherein
- the first control unit instructs the first digital signal processor and the second digital signal processor,
- the first digital signal processor carries out at least any of a demodulation calculation that is a calculation relating to demodulation of servo information and a digital filter calculation based on an instruction from the first control unit,
- the second digital signal processor carries out a correction calculation that is a calculation relating to a correction of the position based on the instruction from the first control unit, and
- the first control unit controls the position based on a result of the calculation carried out by the first digital signal processor and the second digital signal processor.
A control device comprising:
- a first digital signal processor;
- a second digital signal processor;
- and
- a first control unit that controls a position of a head with respect to a storage medium, wherein
- the first control unit instructs the first digital signal processor and the second digital signal processor,
- the first digital signal processor carries out at least any of a demodulation calculation that is a calculation relating to demodulation of servo information and a digital filter calculation based on an instruction from the first control unit,
- the second digital signal processor carries out a correction calculation that is a calculation relating to a correction of the position based on the instruction from the first control unit, and
- the first control unit controls the position based on a result of the calculation carried out by the first digital signal processor and the second digital signal processor.
Dependencies are inferred from the claim text.