DE69622077D1 - System und Verfahren zur Leistungssteuerung eines Plattenantriebs - Google Patents

System und Verfahren zur Leistungssteuerung eines Plattenantriebs

Info

Publication number
DE69622077D1
DE69622077D1 DE69622077T DE69622077T DE69622077D1 DE 69622077 D1 DE69622077 D1 DE 69622077D1 DE 69622077 T DE69622077 T DE 69622077T DE 69622077 T DE69622077 T DE 69622077T DE 69622077 D1 DE69622077 D1 DE 69622077D1
Authority
DE
Germany
Prior art keywords
controlling
power
disk drive
disk
drive
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE69622077T
Other languages
English (en)
Other versions
DE69622077T2 (de
Inventor
Christos John Georgiou
Edward Scott Kirkpatrick
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IBM United Kingdom Ltd
HGST Netherlands BV
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of DE69622077D1 publication Critical patent/DE69622077D1/de
Application granted granted Critical
Publication of DE69622077T2 publication Critical patent/DE69622077T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
    • G06F1/3215—Monitoring of peripheral devices
    • G06F1/3221—Monitoring of peripheral devices of disk drive devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234—Power saving characterised by the action undertaken
    • G06F1/325—Power saving in peripheral device
    • G06F1/3268—Power saving in hard disk drive
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Rotational Drive Of Disk (AREA)
  • Power Sources (AREA)
DE69622077T 1995-04-13 1996-02-16 System und Verfahren zur Leistungssteuerung eines Plattenantriebs Expired - Fee Related DE69622077T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/421,271 US5774292A (en) 1995-04-13 1995-04-13 Disk drive power management system and method

Publications (2)

Publication Number Publication Date
DE69622077D1 true DE69622077D1 (de) 2002-08-08
DE69622077T2 DE69622077T2 (de) 2003-03-13

Family

ID=23669874

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69622077T Expired - Fee Related DE69622077T2 (de) 1995-04-13 1996-02-16 System und Verfahren zur Leistungssteuerung eines Plattenantriebs

Country Status (5)

Country Link
US (1) US5774292A (de)
EP (1) EP0737909B1 (de)
JP (1) JP3386951B2 (de)
KR (1) KR100237141B1 (de)
DE (1) DE69622077T2 (de)

Families Citing this family (88)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3442243B2 (ja) 1996-07-12 2003-09-02 ティアック株式会社 デ−タ再生方法及び装置
US6115799A (en) * 1996-07-19 2000-09-05 Canon Kabushiki Kaisha Information processing apparatus and associated method for managing a memory using a next fit and for reducing a memory fragmentation problem
US6195322B1 (en) * 1996-07-25 2001-02-27 Sony Corporation Disk drive device and method of setting rotational speed thereof
KR100480415B1 (ko) * 1996-08-14 2005-06-07 삼성전자주식회사 씨디-롬(cd-rom) 드라이브의 동작상태 체크방법
JPH10162483A (ja) 1996-11-29 1998-06-19 Sony Corp 記録再生方法および記録再生装置
JPH10222918A (ja) * 1997-02-06 1998-08-21 Samsung Electron Co Ltd ディスク形記憶装置の制御方法
JP3396402B2 (ja) * 1997-07-14 2003-04-14 インターナショナル・ビジネス・マシーンズ・コーポレーション ディスク・ドライブ装置及びこれの制御方法
JPH11312356A (ja) * 1998-04-28 1999-11-09 Fujitsu Ltd 信号処理装置の電源供給方法、信号処理装置、制御装置及びディスク装置
JP3663302B2 (ja) * 1998-08-20 2005-06-22 株式会社日立グローバルストレージテクノロジーズ 磁気ディスク装置
JP3819166B2 (ja) * 1998-11-27 2006-09-06 ヒタチグローバルストレージテクノロジーズネザーランドビーブイ 消費エネルギー低減方法
KR100490934B1 (ko) * 1999-08-25 2005-05-27 시게이트 테크놀로지 엘엘씨 디스크 드라이브의 지능형 파워 관리
JP2001084688A (ja) * 1999-09-16 2001-03-30 Hitachi Ltd 磁気ディスク装置
JP3756708B2 (ja) * 1999-09-30 2006-03-15 株式会社東芝 情報処理端末装置およびそのファイル管理方法
JP2002007076A (ja) * 2000-06-22 2002-01-11 Matsushita Electric Ind Co Ltd 記録再生装置
JP2002109820A (ja) * 2000-09-29 2002-04-12 Fujitsu Ltd 情報記憶装置
WO2002029511A2 (en) * 2000-10-05 2002-04-11 Wintegra Ltd. Method system and apparatus for multiprocessing
US7007141B2 (en) * 2001-01-30 2006-02-28 Data Domain, Inc. Archival data storage system and method
US6892313B1 (en) * 2001-06-21 2005-05-10 Western Digital Technologies, Inc. Method for predictive power management for operating a disk drive in a mobile device to optimize power usage
EP1367655A4 (de) * 2001-09-03 2009-05-06 Panasonic Corp "halbleiter-lichtemissionsbauelement, lichtemissionsvorrichtung und herstellungsverfahren für ein halbleiter-lichtemissionsbauelement"
US7120806B1 (en) 2001-10-31 2006-10-10 Western Digital Technologies, Inc. Method for setting a power operating mode transition interval of a disk drive in a mobile device based on application category
WO2003081416A2 (en) * 2002-03-21 2003-10-02 Tempest Microsystems A lower power disk array as a replacement for robotic tape storage
US7573715B2 (en) * 2002-03-21 2009-08-11 Tempest Microsystems High density storage system
US7454529B2 (en) * 2002-08-02 2008-11-18 Netapp, Inc. Protectable data storage system and a method of protecting and/or managing a data storage system
US7069466B2 (en) * 2002-08-14 2006-06-27 Alacritus, Inc. Method and system for copying backup data
US6851031B2 (en) * 2002-08-30 2005-02-01 Alacritus, Inc. Method of importing data from a physical data storage device into a virtual tape library
US7437387B2 (en) * 2002-08-30 2008-10-14 Netapp, Inc. Method and system for providing a file system overlay
US6862656B2 (en) 2002-08-30 2005-03-01 Alacritus, Inc. System and method for exporting a virtual tape
US7882081B2 (en) * 2002-08-30 2011-02-01 Netapp, Inc. Optimized disk repository for the storage and retrieval of mostly sequential data
US8024172B2 (en) * 2002-12-09 2011-09-20 Netapp, Inc. Method and system for emulating tape libraries
US7567993B2 (en) * 2002-12-09 2009-07-28 Netapp, Inc. Method and system for creating and using removable disk based copies of backup data
US7068456B2 (en) * 2002-12-10 2006-06-27 Intel Corporation Method and apparatus for providing multiple power and performance status for a spinning media
JP2004206775A (ja) * 2002-12-25 2004-07-22 Sony Corp ディスク装置、ディスク装置の制御方法、ディスク装置の制御方法のプログラム
JP4061492B2 (ja) * 2003-02-10 2008-03-19 ソニー株式会社 情報処理装置および消費電力制御方法
US6973369B2 (en) * 2003-03-12 2005-12-06 Alacritus, Inc. System and method for virtual vaulting
US20040228411A1 (en) * 2003-05-12 2004-11-18 Sony Corporation Method and system for decoder clock control in presence of jitter
US7437492B2 (en) * 2003-05-14 2008-10-14 Netapp, Inc Method and system for data compression and compression estimation in a virtual tape library environment
US7206948B2 (en) * 2003-12-09 2007-04-17 Seagate Technology Llc System and method for reducing power usage
US7406488B2 (en) * 2004-02-04 2008-07-29 Netapp Method and system for maintaining data in a continuous data protection system
US7904679B2 (en) * 2004-02-04 2011-03-08 Netapp, Inc. Method and apparatus for managing backup data
US7783606B2 (en) * 2004-02-04 2010-08-24 Netapp, Inc. Method and system for remote data recovery
US7426617B2 (en) * 2004-02-04 2008-09-16 Network Appliance, Inc. Method and system for synchronizing volumes in a continuous data protection system
US7559088B2 (en) * 2004-02-04 2009-07-07 Netapp, Inc. Method and apparatus for deleting data upon expiration
US20050182910A1 (en) * 2004-02-04 2005-08-18 Alacritus, Inc. Method and system for adding redundancy to a continuous data protection system
US7325159B2 (en) * 2004-02-04 2008-01-29 Network Appliance, Inc. Method and system for data recovery in a continuous data protection system
US7315965B2 (en) * 2004-02-04 2008-01-01 Network Appliance, Inc. Method and system for storing data using a continuous data protection system
US7490103B2 (en) * 2004-02-04 2009-02-10 Netapp, Inc. Method and system for backing up data
US7720817B2 (en) * 2004-02-04 2010-05-18 Netapp, Inc. Method and system for browsing objects on a protected volume in a continuous data protection system
US7904604B2 (en) * 2004-07-19 2011-03-08 Seagate Technology Llc Expedited and low power command sequence servicing
US8028135B1 (en) 2004-09-01 2011-09-27 Netapp, Inc. Method and apparatus for maintaining compliant storage
US7526620B1 (en) 2004-12-14 2009-04-28 Netapp, Inc. Disk sanitization in an active file system
US7581118B2 (en) * 2004-12-14 2009-08-25 Netapp, Inc. Disk sanitization using encryption
US7558839B1 (en) 2004-12-14 2009-07-07 Netapp, Inc. Read-after-write verification for improved write-once-read-many data storage
US7774610B2 (en) * 2004-12-14 2010-08-10 Netapp, Inc. Method and apparatus for verifiably migrating WORM data
US7487374B2 (en) * 2005-01-13 2009-02-03 International Business Machines Corporation Dynamic power and clock-gating method and circuitry with sleep mode based on estimated time for receipt of next wake-up signal
US7380088B2 (en) * 2005-02-04 2008-05-27 Dot Hill Systems Corp. Storage device method and apparatus
US7568122B2 (en) * 2005-03-16 2009-07-28 Dot Hill Systems Corporation Method and apparatus for identifying a faulty component on a multiple component field replaceable unit
JP4572740B2 (ja) * 2005-05-24 2010-11-04 船井電機株式会社 光ディスク装置
US7751436B2 (en) * 2005-05-24 2010-07-06 Sony Corporation System and method for dynamically establishing PLL speed based on receive buffer data accumulation for streaming video
US20070061509A1 (en) * 2005-09-09 2007-03-15 Vikas Ahluwalia Power management in a distributed file system
US7401198B2 (en) * 2005-10-06 2008-07-15 Netapp Maximizing storage system throughput by measuring system performance metrics
US7380147B1 (en) 2005-10-24 2008-05-27 Western Digital Technologies, Inc. Computer device employing a sliding window to set an idle mode timeout interval
US7600054B2 (en) * 2005-11-14 2009-10-06 Lenovo Singapore Pte Ltd Apparatus, system, and method for protecting a motion-sensitive device
CN101312794B (zh) * 2005-11-23 2012-07-04 Fsi国际公司 从基材上除去材料的方法
US7752401B2 (en) 2006-01-25 2010-07-06 Netapp, Inc. Method and apparatus to automatically commit files to WORM status
US7650533B1 (en) 2006-04-20 2010-01-19 Netapp, Inc. Method and system for performing a restoration in a continuous data protection system
US7552347B2 (en) * 2006-06-13 2009-06-23 Scientific-Atlanta, Inc. Adaptive power management of a disk drive based on user activity
US7425810B2 (en) * 2006-06-30 2008-09-16 Lenovo (Singapore) Pte., Ltd. Disk drive management
US7565598B2 (en) * 2006-08-10 2009-07-21 Powerfile, Inc. Error correction for disk storage media
US7732949B2 (en) * 2006-10-18 2010-06-08 International Business Machines Corporation System for method of predicting power events in an intermittent power environment and dispatching computational operations of an integrated circuit accordingly
US7853809B2 (en) * 2007-01-11 2010-12-14 Seagate Technology Llc System and method of power management
CN101488351B (zh) * 2008-01-14 2011-07-27 鸿富锦精密工业（深圳）有限公司 光盘播放设备及其马达控制方法
US8225159B1 (en) * 2008-04-25 2012-07-17 Netapp, Inc. Method and system for implementing power savings features on storage devices within a storage subsystem
US20100148708A1 (en) * 2008-12-11 2010-06-17 Jorgenson Joel A Voltage scaling of an electric motor load to reduce power consumption
JP2010146630A (ja) * 2008-12-18 2010-07-01 Hitachi Global Storage Technologies Netherlands Bv ディスク・ドライブ及びディスク・アレイ・システム
US8356139B2 (en) * 2009-03-24 2013-01-15 Hitachi, Ltd. Storage system for maintaining hard disk reliability
US8370854B2 (en) * 2009-08-13 2013-02-05 International Business Machines Corporation Automatic closure of a file or a device in a data processing system
US20110252252A1 (en) * 2010-04-12 2011-10-13 Xerox Corporation System and method for identifying and reducing power consumption based on an inactivity period
CN102736725B (zh) * 2012-05-18 2016-03-30 华为技术有限公司 一种硬盘节能控制方法、装置及中央处理器
US9244518B2 (en) * 2012-12-20 2016-01-26 Xerox Corporation Multi-mode device power-saving optimization
WO2014133508A1 (en) * 2013-02-28 2014-09-04 Hewlett-Packard Development Company, L.P. Reducing power for storage devices
US9195293B1 (en) 2013-05-03 2015-11-24 Western Digital Technologies, Inc. User controlled data storage device power and performance settings
US9442668B1 (en) * 2013-08-29 2016-09-13 Western Digital Technologies, Inc. Adaptive power management control with performance feedback
WO2015035142A1 (en) * 2013-09-09 2015-03-12 Seagate Technology Llc Mobile data storage device with power management
TWI501077B (zh) * 2013-12-17 2015-09-21 Inventec Corp 資料存取管理裝置及方法
US9632879B2 (en) * 2014-09-22 2017-04-25 Hewlett-Packard Development Company, L.P. Disk drive repair
JP2019164857A (ja) * 2018-03-19 2019-09-26 株式会社東芝 ディスク装置
US11327670B2 (en) * 2020-01-09 2022-05-10 International Business Machines Corporation Reducing power consumption in a dispersed storage network
US11222658B1 (en) 2020-10-20 2022-01-11 Seagate Technology Llc Power latency control in data storage devices

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60171672A (ja) * 1984-02-15 1985-09-05 Ricoh Co Ltd デイスク記録装置
DE3732370A1 (de) * 1987-09-25 1989-04-06 Hoechst Ag Verfahren zur vermischung von lebenden zellen oder mikroorganismen mit einer viskosen fluessigkeit und mischungen, die nach diesem verfahren hergestellt wurden
US5402200A (en) * 1988-02-04 1995-03-28 Conner Peripherals, Inc. Low-power hard disk drive system architecture
GB8912787D0 (en) * 1989-06-02 1989-07-19 Alam Aftab Protein assay system
JPH0362374A (ja) * 1989-07-31 1991-03-18 Toshiba Corp ハードディスク制御装置
JPH0349660U (de) * 1989-09-18 1991-05-15
JPH03109625A (ja) * 1989-09-22 1991-05-09 Toshiba Corp 電子機器
JPH046665A (ja) * 1990-04-25 1992-01-10 Mitsubishi Electric Corp 記録ディスク装置
JPH0411353A (ja) * 1990-04-27 1992-01-16 Matsushita Electric Ind Co Ltd 磁気ディスク装置
JPH0423269A (ja) * 1990-05-18 1992-01-27 Toshiba Corp ディスク装置
JPH0492254A (ja) * 1990-08-08 1992-03-25 Hitachi Ltd ハードディスク記憶装置
JPH04123359A (ja) * 1990-09-14 1992-04-23 Mitsubishi Electric Corp 光ディスク装置
JPH04205963A (ja) * 1990-11-30 1992-07-28 Fujitsu Ltd ディスク装置
DE69319938T2 (de) * 1992-01-30 1999-01-14 Hitachi Ltd Gerät für optische Platten
JPH05217272A (ja) * 1992-01-31 1993-08-27 Hitachi Ltd ディスク記録及び又は再生装置
US5345347A (en) * 1992-02-18 1994-09-06 Western Digital Corporation Disk drive with reduced power modes
US5341249A (en) * 1992-08-27 1994-08-23 Quantum Corporation Disk drive using PRML class IV sampling data detection with digital adaptive equalization
JPH0696517A (ja) * 1992-09-11 1994-04-08 Matsushita Electric Ind Co Ltd 磁気ディスク装置
US5355366A (en) * 1993-04-23 1994-10-11 International Business Machines Corporation Traffic intermixing mechanism for fast circuit switching
US5412519A (en) * 1993-08-26 1995-05-02 International Business Machines Corporation Optimization of disk drive spindle speed during low power mode
US5452277A (en) * 1993-12-30 1995-09-19 International Business Machines Corporation Adaptive system for optimizing disk drive power consumption
JP2858542B2 (ja) * 1994-06-03 1999-02-17 インターナショナル・ビジネス・マシーンズ・コーポレイション コンピュータ用ディスク・ドライブの電力消費を節減する方法及び装置
US5481733A (en) * 1994-06-15 1996-01-02 Panasonic Technologies, Inc. Method for managing the power distributed to a disk drive in a laptop computer

Also Published As

Publication number Publication date
KR100237141B1 (ko) 2000-01-15
EP0737909A2 (de) 1996-10-16
EP0737909B1 (de) 2002-07-03
KR960038566A (ko) 1996-11-21
DE69622077T2 (de) 2003-03-13
JP3386951B2 (ja) 2003-03-17
JPH08287583A (ja) 1996-11-01
US5774292A (en) 1998-06-30
EP0737909A3 (de) 1996-11-13

Similar Documents

Publication Publication Date Title
DE69622077D1 (de) System und Verfahren zur Leistungssteuerung eines Plattenantriebs
DE69702763D1 (de) Antriebsvorrichtung und verfahren zur steuerung derselben
DE69716853T2 (de) Antriebsvorrichtung und Verfahren zur Steuerung desselben
DE59507752D1 (de) Verfahren und vorrichtung zur steuerung der antriebseinheit eines fahrzeugs
DE69709002D1 (de) Antriebsanordnung und Verfahren zur Steuerung derselben
DE69707383D1 (de) Antriebsanordnung und Verfahren zur Steuerung derselben
DE69619654D1 (de) Verfahren und gerät zur überspielungssteuerung
DE69715765T2 (de) Antriebsanordnung und Verfahren zur Steuerung desselben
DE69801854D1 (de) Antriebsanordnung und Verfahren zur Leistungssteuerung
DE59409520D1 (de) Verfahren und vorrichtung zur planung und kontrolle eines chirurgischen eingriffs
DE69429079T2 (de) Verfahren und vorrichtung zur spitzenleistungsregelung eines verstärkers
DE69526271D1 (de) Vorrichtung und Verfahren zur Steuerung einer magnetischen Platteneinheit
DE69523717D1 (de) Verfahren und vorrichtung zur richtungssteuerung eines objektes
DE59808271D1 (de) Verfahren und vorrichtung zur steuerung der antriebseinheit eines fahrzeugs
DE69726511D1 (de) Scheibeantriebssystem und Scheibeantriebsverfahren
DE69837741D1 (de) Verfahren und system zur steuerung eines roboters
DE69730925D1 (de) System und Verfahren zur Steuerung des Antriebs eines Elektrofahrzeugs
DE59403150D1 (de) Verfahren zur Steuerung und Regelung eines elektrischen Antriebes eines Fahrzeugs
DE69418233D1 (de) Ultraschallmotor und Verfahren zur Steuerung
DE59206926D1 (de) Verfahren und vorrichtung zur regelung eines umrichtergespeisten permanenterregten synchronmotors
DE59610020D1 (de) Prozesskontrollstreifen und verfahren zur aufzeichnung
DE69411994T2 (de) Verfahren und Vorrichtung zur Steuerung eines Filmantriebs
DE69430158T2 (de) Verfahren und Gerät zur Steuerung eines Audiosystems
DE69617101D1 (de) Verfahren und System zur Steuerung eines Synchronmotors
DE69616474D1 (de) Verfahren und Einrichtung zur Steuerung eines piezoelektrischen Antriebs

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.

Owner name: IBM UNITED KINGDOM LTD., PORTSMOUTH, HAMPSHIRE, GB

8339 Ceased/non-payment of the annual fee