WO1999008173A2 - Dispositif de stockage de donnees orientees objets - Google Patents

Dispositif de stockage de donnees orientees objets Download PDF

Info

Publication number
WO1999008173A2
WO1999008173A2 PCT/US1998/016623 US9816623W WO9908173A2 WO 1999008173 A2 WO1999008173 A2 WO 1999008173A2 US 9816623 W US9816623 W US 9816623W WO 9908173 A2 WO9908173 A2 WO 9908173A2
Authority
WO
WIPO (PCT)
Prior art keywords
objects
storage device
data storage
requester
partition
Prior art date
Application number
PCT/US1998/016623
Other languages
English (en)
Other versions
WO1999008173B1 (fr
WO1999008173A3 (fr
Inventor
David Bruce Anderson
Original Assignee
Seagate Technology, Inc.
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 Seagate Technology, Inc. filed Critical Seagate Technology, Inc.
Priority to KR1020007001402A priority Critical patent/KR100602393B1/ko
Priority to DE19882605T priority patent/DE19882605T1/de
Priority to JP2000506576A priority patent/JP2003517645A/ja
Priority to GB0001558A priority patent/GB2345167B/en
Publication of WO1999008173A2 publication Critical patent/WO1999008173A2/fr
Publication of WO1999008173A3 publication Critical patent/WO1999008173A3/fr
Publication of WO1999008173B1 publication Critical patent/WO1999008173B1/fr

Links

Classifications

    • 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
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
    • G06F3/0671—In-line storage system
    • G06F3/0673—Single storage device
    • G06F3/0674—Disk device
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/28—Databases characterised by their database models, e.g. relational or object models
    • G06F16/289—Object oriented databases
    • 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
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
    • G06F3/0604—Improving or facilitating administration, e.g. storage management
    • G06F3/0607—Improving or facilitating administration, e.g. storage management by facilitating the process of upgrading existing storage systems, e.g. for improving compatibility between host and storage device
    • 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
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
    • G06F3/0638—Organizing or formatting or addressing of data

Definitions

  • the present invention relates to data storage devices. More specifically, the present invention relates to a data storage device, such as a disc drive, tape drive, or optical drive, in which data is organized and accessed as objects.
  • a data storage device such as a disc drive, tape drive, or optical drive, in which data is organized and accessed as objects.
  • the first is a mainframe computing model and the second is a clustered computing model.
  • the traditional progression for an end user in the mainframe computing model is to purchase an initial system, and when additional processing capabilities are required, to replace the initial system with a bigger system.
  • traumatic discontinuities occur. For example, if the user outgrows the architecture of the initial system, the user may need to convert from one operating system to another, or even from one vendor's proprietary architecture to that of another vendor, when the second upgraded mainframe system is purchased.
  • These changes entail enormous costs for the organization purchasing the upgrade, in both dollars and employee time.
  • a mainframe computer is replaced with a cluster of smaller, standards-based servers.
  • This can offer many advantages over the mainframe model . Since the cluster may start off as only a single system, the threshold to entering the cluster model is lower. Further, such smaller systems are typically sold in high volume, making the cost of computing less. Also, such systems are standards based in that they do not exhibit dependence on proprietary architectures. This provides for the availability of equipment from multiple sources which allows the user to choose the best alternative with each subsequent purchase .
  • the clustered computing model does have disadvantages and problems.
  • the clustered computing model encounters difficulty in providing clustered systems with the ability to share data in a way that allows the cluster to take on the workload that a single mainframe could perform.
  • it is currently very difficult to implement clustered models where each of the servers in the cluster are required to process transactions on the same data. Examples of some such applications include an airlines reservations system or a financial institution's complete inventory of transactions.
  • the second disadvantage of the clustered computing model simply involves the lack of extensive experience in managing storage and data which exists in the mainframe environment . Such experience has evolved into management software that is simply not yet available in the standards based cluster environment .
  • the present invention addresses these and other problems, and offers other advantages over the prior art .
  • a data storage device includes storage media having stored thereon data configured as a plurality of objects, each object having attributes indicative of characteristics of the object.
  • a control component is operably coupled to the storage media and is configured to provide an interface to the objects. The interface exposes methods which are invoked to access the object.
  • FIG. 1 is a block diagram of a network attached storage system in accordance with one aspect of the present invention.
  • Figure 2 illustrates an object model in accordance with one aspect of the present invention.
  • Figure 3-1 is a block diagram of a first configuration in which an object on the storage device is accessed by a requester.
  • Figure 3-2 is a block diagram of a second configuration in which an object on a storage device is accessed by a requester.
  • Figure 4 is a perspective view of a disc drive in accordance with one aspect of the present invention.
  • Figure 5 is a functional block diagram illustrating access of an object by a requester.
  • Figure 6 illustrates a portion of a storage media partitioned in accordance with one aspect of the present invention.
  • Figures 7-1 and 7-2 show a flow diagram illustrating access of an object by a requester in accordance with one aspect in accordance of the present invention.
  • Figure 8 is a flow diagram illustrating creation of an object in accordance with one aspect of the present invention.
  • Figure 9 is a flow diagram illustrating opening and updating of an object in accordance with one aspect of the present invention.
  • Figure 10 is a flow diagram which illustrates writing to an object in accordance with one aspect of the present invention.
  • Figure 12 is a flow diagram which illustrates reading an object in accordance with one aspect of the present invention.
  • Figure 13 is a flow diagram which illustrates closing an object in accordance with one aspect of the present invention.
  • Figure 14 is a flow diagram which illustrates removing an object in accordance with one aspect of the present invention.
  • Figure 15 is a flow diagram which illustrates creating a partition in accordance with one aspect of the present invention.
  • Figure 16 is a flow diagram which illustrates removing a partition in accordance with one aspect of the present invention.
  • Figure 17 is a flow diagram which illustrates exporting an object in accordance with one aspect of the present invention.
  • Figure 20 is a flow diagram which illustrates reading lock attributes in accordance with one aspect of the present invention.
  • Figure 21 is a flow diagram which illustrates setting lock attributes in accordance with one aspect of the present invention.
  • Figure 22 is a flow diagram which illustrates resetting lock attributes of an object in accordance with one aspect of the present invention.
  • Figure 23 is a flow diagram which illustrates obtaining device associations in accordance with one aspect of the present invention.
  • Figure 24 is a flow diagram which illustrates setting device associations in accordance with one aspect of the present invention.
  • FIG. 1 is a block diagram of a data storage system 100 in accordance with one aspect of the present invention.
  • System 100 includes object oriented data storage devices 110 and 112, file server 114, requesters 116, 118 and 120, and interconnect 122.
  • System 100 illustrates a network attached storage configuration which can be constructed of equipment and software from many different vendors, and which appear to users as a single large computer system.
  • Object oriented storage devices 110-112 are the storage components which perform the data storage function of System 100.
  • Storage devices 110-112 preferably include disc drives, redundant arrays of independent discs (RAID) subsystems, tape drives, tape libraries, optical drives, juke boxes or any other storage device which can be shared.
  • Storage devices 110 and 112 are also provided with an input/output (I/O) channel attachment to requesters 116, 118 and 120, which will access devices 110 and 112.
  • I/O input/output
  • Requesters 116, 118 and 120 are components, such as servers or clients, which share information stored on devices 110 and 112. Requesters 116-120 are also preferably configured to directly access the information on storage devices 110 and 112.
  • storage devices 110 and 112 learn the location of information required to locate other devices in system 100 and the address which must be used to invoke a management service, such as backup.
  • file server 114 learns of the existence of storage devices 110 and 112 from the fabric services .
  • requesters 116-120 may be denied access to some components of system 100. From the set of storage devices 110 and 112 available to each requester, that requester can then identify the files, data bases, and free space available to it.
  • An actuator arm assembly 140 is rotatably mounted preferably in one corner of housing 136.
  • the actuator arm assembly 140 carries a plurality of head gimbal assemblies 142, which each carry a slider having a read/write head, or transducer (not shown) for reading information from and writing information onto discs 132.
  • Figure 15 is a flow diagram illustrating the Create_Partitionx method which can be invoked by a requester, as indicated by bock 290, in order to create a partition on storage device 110.
  • the Create_Partitionx method partitions the drive into one or more regions, all space on the storage media need not be accounted for.
  • partition regions can also span various zones on a disk.
  • this method is used to create partitions in a tiling arrangement, with the partitions representing true divisions of the storage space on the device. This arrangement is used to divide the space by service levels such as data array. Such partitions cannot be resized, but can be removed and recreated.
  • data management policies are communicated to each storage device 110-112, so that the storage devices can act independently of one other to execute the management policies. This provides significant advantages in that it results in not only less human intervention, but also more predictable and timely management control .
  • the Get_Device_Associations method is illustrated. This method can be invoked, as indicated by block 384, by providing permission information and option information. In response, control component 150 returns the status of the request, and the requested associations for which the device is a member. This is indicated by block 386.
  • Figure 24 is a flow diagram illustrating the Set_Device_Associations method. This method can be invoked, as indicated by block 392, by providing permission information, option information, and a list of members and attributes defining the associations. In response, control component 150 modifies the device association object 156 contained on the storage media, as indicated by block 394. The device association object is modified to include the attributes provided by the requester, and to include a time stamp showing when the object attributes were last modified, etc.
  • a particular server cluster may be desirable to define a higher level of security for communication with the remotely located devices, but not for communication from local traffic. This allows the employment of security for remotely located requesters or servers, but avoids the performance loss which would accompany employing such security for local requesters or servers as well .
  • each storage device 110-112 preferably includes a readable monotonically incrementing clock to be used for time stamping secure messages and objects.
  • the clocks for the various devices are synchronized on a system-wide basis.
  • file server 114 accommodates for discrepancies and values from storage device-to-storage device .
  • the performance in a clustered system is enhanced by using object oriented storage devices for a number of reasons. For example, the metadata need never leave the device itself, eliminating a certain number of I/O operations.
  • a lock method can also be used to cause control component 150 to access lock attributes of a specified object.
  • the present invention can also be implemented as a method of storing data on a disc drive .
  • the method includes steps of storing information on a disc as objects and accessing the information by invoking a number of methods (or functions) as set out above.
  • the present invention can also be implemented as a data storage system including one or more disc drives arranged as discussed above with respect to a data storage device.
  • the present invention can also be implemented as a computer readable medium (such as memory in control component 150, or one of discs 132, or another computer readable medium) storing instructions which, when executed by a computer in a data storage system, cause the computer to store data on a disc 132 as a plurality of objects 124-126 having attributes indicative of characteristics of the objects.
  • the instructions when executed, also cause the computer to access objects on the disc 132 through an interface to the objects by invoking functions exposed by the interface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Databases & Information Systems (AREA)
  • Human Computer Interaction (AREA)
  • Data Mining & Analysis (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Debugging And Monitoring (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Storage Device Security (AREA)

Abstract

L'invention concerne un dispositif de stockage de données (110, 112) comprenant des éléments de stockage (132) dans lesquels sont stockées des données configurées sous la forme d'une pluralité d'objets (124, 126), chaque objet ayant des attributs indiquant les caractéristiques de l'objet. Un organe de commande (150) est fonctionnellement couplé aux éléments de stockage (132) et configuré de manière à constituer une interface (128) avec les objets (124, 126). L'interface propose des méthodes (ζ-N) qui sont sollicitées pour l'accès aux objets (124, 126).
PCT/US1998/016623 1997-08-11 1998-08-10 Dispositif de stockage de donnees orientees objets WO1999008173A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1020007001402A KR100602393B1 (ko) 1997-08-11 1998-08-10 객체 지향 데이터 저장 장치
DE19882605T DE19882605T1 (de) 1997-08-11 1998-08-10 Objektorientierte Datenspeichervorrichtung
JP2000506576A JP2003517645A (ja) 1997-08-11 1998-08-10 データ記憶装置および記憶方法
GB0001558A GB2345167B (en) 1997-08-11 1998-08-10 Object oriented data storage device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US5473797P 1997-08-11 1997-08-11
US60/054,737 1997-08-11
US8183498P 1998-04-15 1998-04-15
US60/081,834 1998-04-15

Publications (3)

Publication Number Publication Date
WO1999008173A2 true WO1999008173A2 (fr) 1999-02-18
WO1999008173A3 WO1999008173A3 (fr) 1999-09-30
WO1999008173B1 WO1999008173B1 (fr) 1999-11-04

Family

ID=26733438

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/016623 WO1999008173A2 (fr) 1997-08-11 1998-08-10 Dispositif de stockage de donnees orientees objets

Country Status (6)

Country Link
JP (1) JP2003517645A (fr)
KR (1) KR100602393B1 (fr)
CN (1) CN1266514A (fr)
DE (1) DE19882605T1 (fr)
GB (1) GB2345167B (fr)
WO (1) WO1999008173A2 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001013236A1 (fr) * 1999-08-17 2001-02-22 Tricord Systems, Inc. Tolerance aux pannes orientee objet
WO2001075566A2 (fr) * 2000-03-31 2001-10-11 Dataplay, Inc. Gestion de systeme de fichiers integree dans un dispositif de memoire
US6725392B1 (en) 1999-03-03 2004-04-20 Adaptec, Inc. Controller fault recovery system for a distributed file system
WO2005059724A1 (fr) * 2003-12-17 2005-06-30 Nokia Corporation Systeme de protection de donnees utilisees par des applications java
WO2005093559A2 (fr) * 2004-03-02 2005-10-06 Intel Corporation Dispositif de stockage d'objets
EP1825370A2 (fr) * 2004-11-08 2007-08-29 EMC Corporation Mise en oeuvre de regles de gestion specifiques d'applications sur un dispositif de stockage adresse par contenu
EP2194467A1 (fr) * 2008-12-01 2010-06-09 Sap Ag Fonctions CRUD etendues pour la gestion de cycle de vie et la continuité des activités
US7856525B2 (en) 2004-11-08 2010-12-21 Emc Corporation Content addressed storage device configured to maintain content address mapping
WO2011113504A1 (fr) * 2010-03-16 2011-09-22 Amplidata Nv Pilote de dispositif destiné à être utilisé dans un système de stockage de données
US8386840B2 (en) 2010-12-27 2013-02-26 Amplidata Nv Distributed object storage system
US8433849B2 (en) 2010-12-27 2013-04-30 Amplidata Nv Hierarchical, distributed object storage system

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001516080A (ja) * 1997-08-15 2001-09-25 シーゲイト テクノロジー エルエルシー データ記憶装置および冗長性維持方法
GB2343535B (en) * 1997-08-28 2002-10-02 Seagate Technology Object reconstruction on object oriented data storage device
US8225221B2 (en) * 2004-04-12 2012-07-17 Microsoft Corporation Method and apparatus for constructing representations of objects and entities
CN111414330B (zh) * 2019-01-04 2024-03-22 阿里巴巴集团控股有限公司 数据编辑方法及系统、数据处理设备、存储介质

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5488721A (en) * 1993-01-26 1996-01-30 International Business Machines Corporation System and method for applying visitor lock and persistent lock flags to control units of work boundaries in an object oriented environment
US5613099A (en) * 1993-02-17 1997-03-18 International Business Machines Corporation Persistent object storage system with modifiable group skeletal formats

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5893107A (en) * 1996-07-01 1999-04-06 Microsoft Corporation Method and system for uniformly accessing multiple directory services

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5488721A (en) * 1993-01-26 1996-01-30 International Business Machines Corporation System and method for applying visitor lock and persistent lock flags to control units of work boundaries in an object oriented environment
US5613099A (en) * 1993-02-17 1997-03-18 International Business Machines Corporation Persistent object storage system with modifiable group skeletal formats

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6725392B1 (en) 1999-03-03 2004-04-20 Adaptec, Inc. Controller fault recovery system for a distributed file system
US6742137B1 (en) 1999-08-17 2004-05-25 Adaptec, Inc. Object oriented fault tolerance
WO2001013236A1 (fr) * 1999-08-17 2001-02-22 Tricord Systems, Inc. Tolerance aux pannes orientee objet
WO2001075566A2 (fr) * 2000-03-31 2001-10-11 Dataplay, Inc. Gestion de systeme de fichiers integree dans un dispositif de memoire
WO2001075566A3 (fr) * 2000-03-31 2002-11-21 Dataplay Inc Gestion de systeme de fichiers integree dans un dispositif de memoire
US6823398B1 (en) 2000-03-31 2004-11-23 Dphi Acquisitions, Inc. File system management embedded in a storage device
WO2005059724A1 (fr) * 2003-12-17 2005-06-30 Nokia Corporation Systeme de protection de donnees utilisees par des applications java
US7680864B2 (en) 2004-03-02 2010-03-16 Intel Corporation Method and apparatus for managing access to stored objects based on retention policy
WO2005093559A2 (fr) * 2004-03-02 2005-10-06 Intel Corporation Dispositif de stockage d'objets
WO2005093559A3 (fr) * 2004-03-02 2005-12-22 Intel Corp Dispositif de stockage d'objets
US8626793B2 (en) 2004-03-02 2014-01-07 Intel Corporation Object storage
EP1825370A4 (fr) * 2004-11-08 2009-05-13 Emc Corp Mise en oeuvre de regles de gestion specifiques d'applications sur un dispositif de stockage adresse par contenu
US7856525B2 (en) 2004-11-08 2010-12-21 Emc Corporation Content addressed storage device configured to maintain content address mapping
US8161013B2 (en) 2004-11-08 2012-04-17 Emc Corporation Implementing application specific management policies on a content addressed storage device
EP1825370A2 (fr) * 2004-11-08 2007-08-29 EMC Corporation Mise en oeuvre de regles de gestion specifiques d'applications sur un dispositif de stockage adresse par contenu
EP2194467A1 (fr) * 2008-12-01 2010-06-09 Sap Ag Fonctions CRUD etendues pour la gestion de cycle de vie et la continuité des activités
US8996466B2 (en) 2008-12-01 2015-03-31 Sap Se Extend crud to support lifecyle management and business continuity
WO2011113504A1 (fr) * 2010-03-16 2011-09-22 Amplidata Nv Pilote de dispositif destiné à être utilisé dans un système de stockage de données
US9256383B2 (en) 2010-03-16 2016-02-09 Amplidata Nv Device driver for use in a data storage system
US8386840B2 (en) 2010-12-27 2013-02-26 Amplidata Nv Distributed object storage system
US8433849B2 (en) 2010-12-27 2013-04-30 Amplidata Nv Hierarchical, distributed object storage system

Also Published As

Publication number Publication date
KR100602393B1 (ko) 2006-07-20
CN1266514A (zh) 2000-09-13
GB0001558D0 (en) 2000-03-15
JP2003517645A (ja) 2003-05-27
DE19882605T1 (de) 2000-08-10
GB2345167A (en) 2000-06-28
WO1999008173B1 (fr) 1999-11-04
KR20010022801A (ko) 2001-03-26
GB2345167B (en) 2002-08-21
WO1999008173A3 (fr) 1999-09-30

Similar Documents

Publication Publication Date Title
US6298401B1 (en) Object oriented storage device having a disc drive controller providing an interface exposing methods which are invoked to access objects stored in a storage media
US6321358B1 (en) Object reconstruction on object oriented data storage device
US6704838B2 (en) Hybrid data storage and reconstruction system and method for a data storage device
US7870353B2 (en) Copying storage units and related metadata to storage
US7308543B2 (en) Method and system for shredding data within a data storage subsystem
US8332360B2 (en) QoS-enabled lifecycle management for file systems
US8229897B2 (en) Restoring a file to its proper storage tier in an information lifecycle management environment
WO1999008173A2 (fr) Dispositif de stockage de donnees orientees objets
JP2005501317A (ja) 外部データ記憶装置管理システムおよび方法
US20070078914A1 (en) Method, apparatus and program storage device for providing a centralized policy based preallocation in a distributed file system
JPH0883253A (ja) 仮想空間管理方法及び装置
KR20020080458A (ko) 가상 디스크 드라이브를 이용한 저장 시스템의 물리적섹터의 파티션 재생성 방법, 데이터 처리 장치 및 데이터저장 장치
US7958097B1 (en) Method and system for implementation of data storage quota
US7996421B2 (en) Method, computer program product, and system for coordinating access to locally and remotely exported file systems
WO1999009479A1 (fr) Mise en application de redondance dans un dispositif de memorisation de donnees oriente objet
US7444349B1 (en) Control of concurrent access to a partitioned data file
JP3752193B2 (ja) ホスト・オペレーティング・システムとゲスト・オペレーティング・システムとの間でアクセス装置の使用を割り振る方法
US6574704B1 (en) Information storage management device and method, control device and method
JPH06110766A (ja) 分割格納ファイルシステムのディレクトリ構成方法および計算機システム
JPS62287359A (ja) 疎結合マルチプロセツサシステムにおけるフアイル同時アクセス制御方式
Hafeez Role of File System in Operating System
KR100601705B1 (ko) 애플리케이션들간의 메모리 공유 방법 및 그 장치
JPH0273436A (ja) ファイル管理方式
WO2017212504A1 (fr) Système informatique et procédé d'attribution de tâches
Holt et al. The Filesystem in Detail

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 98808046.X

Country of ref document: CN

AK Designated states

Kind code of ref document: A2

Designated state(s): CN DE GB JP KR SG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
AK Designated states

Kind code of ref document: A3

Designated state(s): CN DE GB JP KR SG

AK Designated states

Kind code of ref document: B1

Designated state(s): CN DE GB JP KR SG

ENP Entry into the national phase in:

Ref document number: 200001558

Country of ref document: GB

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 1020007001402

Country of ref document: KR

RET De translation (de og part 6b)

Ref document number: 19882605

Country of ref document: DE

Date of ref document: 20000810

WWE Wipo information: entry into national phase

Ref document number: 19882605

Country of ref document: DE

WWP Wipo information: published in national office

Ref document number: 1020007001402

Country of ref document: KR

WWG Wipo information: grant in national office

Ref document number: 1020007001402

Country of ref document: KR