WO2009022421A1 - Memory device - Google Patents

Memory device Download PDF

Info

Publication number
WO2009022421A1
WO2009022421A1 PCT/JP2007/065935 JP2007065935W WO2009022421A1 WO 2009022421 A1 WO2009022421 A1 WO 2009022421A1 JP 2007065935 W JP2007065935 W JP 2007065935W WO 2009022421 A1 WO2009022421 A1 WO 2009022421A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotations
hard disk
spindle motor
raising
target
Prior art date
Application number
PCT/JP2007/065935
Other languages
French (fr)
Japanese (ja)
Inventor
Akira Minami
Original Assignee
Fujitsu Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Limited filed Critical Fujitsu Limited
Priority to PCT/JP2007/065935 priority Critical patent/WO2009022421A1/en
Publication of WO2009022421A1 publication Critical patent/WO2009022421A1/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/2054—Spindle motor power-up sequences

Landscapes

  • Control Of Electric Motors In General (AREA)
  • Rotational Drive Of Disk (AREA)

Abstract

A hard disk subsystem is used as connected with an external device such as a personal computer or a server via a USB cable. A hard disk drive constituting a memory device incorporated in the hard disk subsystem performs stepwise boot control of setting a smaller number of rotations than a target number of rotations as a target value at the time of starting the power-on, then raising the number of rotations of a spindle motor, thereafter setting the target number of rotations to the target value and raising the number of rotations of the spindle motor. Thus, peak current when starting up the spindle motor is suppressed not to exceed significantly current supply capacity of a USB interface.
PCT/JP2007/065935 2007-08-16 2007-08-16 Memory device WO2009022421A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/065935 WO2009022421A1 (en) 2007-08-16 2007-08-16 Memory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/065935 WO2009022421A1 (en) 2007-08-16 2007-08-16 Memory device

Publications (1)

Publication Number Publication Date
WO2009022421A1 true WO2009022421A1 (en) 2009-02-19

Family

ID=40350485

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/065935 WO2009022421A1 (en) 2007-08-16 2007-08-16 Memory device

Country Status (1)

Country Link
WO (1) WO2009022421A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013164894A (en) * 2006-06-08 2013-08-22 Agere Systems Inc Device for reducing disk drive power consumption and method
JP2014081987A (en) * 2012-10-17 2014-05-08 Lin Bu Sheng External contact type storage device and method for driving the same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004241093A (en) * 2003-02-10 2004-08-26 Sony Corp Information processor and method for controlling electric power consumption
JP2005190202A (en) * 2003-12-25 2005-07-14 Toshiba Corp Electronic device with serial ata interface, and power save method of serial ata bus
JP2005259253A (en) * 2004-03-11 2005-09-22 Rohm Co Ltd Floppy disk control circuit and floppy disk device having same
JP2006085855A (en) * 2004-09-17 2006-03-30 Matsushita Electric Ind Co Ltd Optical disk device
JP2006099666A (en) * 2004-09-30 2006-04-13 Hitachi Global Storage Technologies Netherlands Bv Recording medium drive, and control method of power save mode in recording medium drive

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004241093A (en) * 2003-02-10 2004-08-26 Sony Corp Information processor and method for controlling electric power consumption
JP2005190202A (en) * 2003-12-25 2005-07-14 Toshiba Corp Electronic device with serial ata interface, and power save method of serial ata bus
JP2005259253A (en) * 2004-03-11 2005-09-22 Rohm Co Ltd Floppy disk control circuit and floppy disk device having same
JP2006085855A (en) * 2004-09-17 2006-03-30 Matsushita Electric Ind Co Ltd Optical disk device
JP2006099666A (en) * 2004-09-30 2006-04-13 Hitachi Global Storage Technologies Netherlands Bv Recording medium drive, and control method of power save mode in recording medium drive

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013164894A (en) * 2006-06-08 2013-08-22 Agere Systems Inc Device for reducing disk drive power consumption and method
JP2014081987A (en) * 2012-10-17 2014-05-08 Lin Bu Sheng External contact type storage device and method for driving the same

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