DE60143969D1 - System und verfahren zum navigieren durch information mit einem drahtlosen kommunikationsgerät - Google Patents

System und verfahren zum navigieren durch information mit einem drahtlosen kommunikationsgerät

Info

Publication number
DE60143969D1
DE60143969D1 DE60143969T DE60143969T DE60143969D1 DE 60143969 D1 DE60143969 D1 DE 60143969D1 DE 60143969 T DE60143969 T DE 60143969T DE 60143969 T DE60143969 T DE 60143969T DE 60143969 D1 DE60143969 D1 DE 60143969D1
Authority
DE
Germany
Prior art keywords
information
communication device
wireless communication
navigating
remote
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 - Lifetime
Application number
DE60143969T
Other languages
English (en)
Inventor
Harry R Major
Michael Knowles
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.)
BlackBerry Ltd
Original Assignee
Research in Motion Ltd
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 Research in Motion Ltd filed Critical Research in Motion Ltd
Application granted granted Critical
Publication of DE60143969D1 publication Critical patent/DE60143969D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/90Details of database functions independent of the retrieved data types
    • G06F16/95Retrieval from the web
    • G06F16/957Browsing optimisation, e.g. caching or content distillation
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01TSPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00Sparking plugs
    • H01T13/02Details
    • H01T13/16Means for dissipating heat
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/90Details of database functions independent of the retrieved data types
    • G06F16/95Retrieval from the web
    • G06F16/957Browsing optimisation, e.g. caching or content distillation
    • G06F16/9577Optimising the visualization of content, e.g. distillation of HTML documents
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/7722Line condition change responsive valves
    • Y10T137/7781With separate connected fluid reactor surface
    • Y10T137/7783Valve closes in responses to reverse flow
DE60143969T 2000-12-22 2001-12-21 System und verfahren zum navigieren durch information mit einem drahtlosen kommunikationsgerät Expired - Lifetime DE60143969D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US25742800P 2000-12-22 2000-12-22
PCT/CA2001/001857 WO2002052785A2 (en) 2000-12-22 2001-12-21 Information browser system and method for a wireless communication device

Publications (1)

Publication Number Publication Date
DE60143969D1 true DE60143969D1 (de) 2011-03-10

Family

ID=22976269

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60143969T Expired - Lifetime DE60143969D1 (de) 2000-12-22 2001-12-21 System und verfahren zum navigieren durch information mit einem drahtlosen kommunikationsgerät

Country Status (8)

Country Link
US (6) USRE41786E1 (de)
EP (4) EP1428348B1 (de)
AT (1) ATE497214T1 (de)
AU (1) AU2002226213A1 (de)
CA (1) CA2432590C (de)
DE (1) DE60143969D1 (de)
HK (1) HK1065199A1 (de)
WO (1) WO2002052785A2 (de)

Families Citing this family (93)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7434219B2 (en) 2000-01-31 2008-10-07 Commvault Systems, Inc. Storage of application specific profiles correlating to document versions
DE60143969D1 (de) 2000-12-22 2011-03-10 Research In Motion Ltd System und verfahren zum navigieren durch information mit einem drahtlosen kommunikationsgerät
US20030050049A1 (en) * 2001-09-13 2003-03-13 Sundstrom Lars Henrik Mobile information service
WO2003027891A1 (en) 2001-09-28 2003-04-03 Commvault Systems, Inc. System and method for archiving objects in an information store
US20040205618A1 (en) * 2001-11-19 2004-10-14 Jean Sini Runtime translator for mobile application content
KR20040020694A (ko) * 2002-08-31 2004-03-09 고재준 전자메일을 이용한 웹 컨텐츠 휴대폰 제공 방법 및 시스템
KR100483497B1 (ko) * 2002-11-26 2005-04-15 한국전자통신연구원 엘리먼트 기반 웹 문서의 파싱시스템 및 그 방법
FI20030967A (fi) * 2003-06-27 2004-12-28 Nokia Corp Yhteysasetusten valinta
US9239686B2 (en) 2003-07-22 2016-01-19 Sheng Tai (Ted) Tsao Method and apparatus for wireless devices access to external storage
WO2006017198A2 (en) * 2004-07-08 2006-02-16 Actuality Systems, Inc. Architecture for rendering graphics on output devices
CN101176300A (zh) * 2005-04-18 2008-05-07 捷讯研究有限公司 根据网络服务定义生成无线应用的系统及方法
CA2513018A1 (en) * 2005-07-22 2007-01-22 Research In Motion Limited Method for training a proxy server for content delivery based on communication of state information from a mobile device browser
CA2513019A1 (en) * 2005-07-22 2007-01-22 Research In Motion Limited A method for communicating state information between a server and a mobile device browser with version handling
CA2513022A1 (en) 2005-07-22 2007-01-22 Research In Motion Limited System and method for communicating state management between a browser user-agent and a mobile data server
CA2513010A1 (en) * 2005-07-22 2007-01-22 Research In Motion Limited A method for detecting state changes between data stored in a first computing device and data retrieved from a second computing device
CA2513014A1 (en) * 2005-07-22 2007-01-22 Research In Motion Limited A method of controlling delivery of multi-part content from an origin server to a mobile device browser via a proxy server
CA2513016A1 (en) * 2005-07-22 2007-01-22 Research In Motion Limited A secure method of synchronizing cache contents of a mobile browser with a proxy server
US7681133B2 (en) * 2005-10-14 2010-03-16 Oracle International Corporation Declarative task-based user interfaces
US8296727B2 (en) * 2005-10-14 2012-10-23 Oracle Corporation Sub-task mechanism for development of task-based user interfaces
US8112394B2 (en) 2005-10-14 2012-02-07 Oracle International Corporation Long-lived data transactions
US20070260748A1 (en) * 2006-05-05 2007-11-08 Talkington Jerry L Method and apparatus to reduce the size of objects transmitted over a network
US7623877B2 (en) * 2006-07-28 2009-11-24 Research In Motion Limited Limited lifespan for outgoing data at a mobile device
US20080132218A1 (en) * 2006-11-30 2008-06-05 Yuval Samson Method and Apparatus for Starting Applications
US7734669B2 (en) * 2006-12-22 2010-06-08 Commvault Systems, Inc. Managing copies of data
KR101366332B1 (ko) * 2007-04-19 2014-02-21 엘지전자 주식회사 통신 시스템에서의 데이터 블록 재전송 방법
US10079912B2 (en) 2007-07-27 2018-09-18 Blackberry Limited Wireless communication system installation
US8965992B2 (en) 2007-07-27 2015-02-24 Blackberry Limited Apparatus and methods for coordination of wireless systems
ATE469499T1 (de) 2007-07-27 2010-06-15 Research In Motion Ltd Vorrichtung und verfahren zum betrieb eines drahtlosen servers
EP2031910A3 (de) * 2007-07-27 2009-04-29 Research In Motion Limited Verwaltung von drahtlosen Vorrichtungen in einem drahtlosen Kommunikationssystem
EP2424194B1 (de) * 2007-07-27 2017-04-19 BlackBerry Limited Verfahren und System zur gemeinsamen Ressourcennutzung
US8086677B2 (en) 2007-07-27 2011-12-27 Research In Motion Limited Information exchange in wireless servers
ATE497670T1 (de) 2007-07-27 2011-02-15 Research In Motion Ltd Verwaltung von drahtlosen systemen
EP2112842B1 (de) 2007-07-27 2013-08-21 Research In Motion Limited Drahtlose Kommunikationssysteme
EP2031916B1 (de) 2007-07-27 2011-12-21 Research In Motion Limited Verwaltung von Richtlinien für drahtlose Vorrichtungen in einem drahtlosen Kommunikationssystem
KR101079624B1 (ko) * 2008-05-06 2011-11-03 삼성전자주식회사 브라우저의 표시 방법 및 이를 이용하는 휴대 단말기
US8769048B2 (en) 2008-06-18 2014-07-01 Commvault Systems, Inc. Data protection scheduling, such as providing a flexible backup window in a data protection system
US20110167327A1 (en) * 2008-06-18 2011-07-07 Joris Roussel Method for preparation of a digital document for the display of said document and the navigation within said
US8352954B2 (en) 2008-06-19 2013-01-08 Commvault Systems, Inc. Data storage resource allocation by employing dynamic methods and blacklisting resource request pools
US9128883B2 (en) 2008-06-19 2015-09-08 Commvault Systems, Inc Data storage resource allocation by performing abbreviated resource checks based on relative chances of failure of the data storage resources to determine whether data storage requests would fail
US8725688B2 (en) 2008-09-05 2014-05-13 Commvault Systems, Inc. Image level copy or restore, such as image level restore without knowledge of data object metadata
US20100070474A1 (en) 2008-09-12 2010-03-18 Lad Kamleshkumar K Transferring or migrating portions of data objects, such as block-level data migration or chunk-based data migration
US8738981B2 (en) * 2008-10-24 2014-05-27 Qualcomm Incorporated Method and apparatus for H-ARQ scheduling in a wireless communication system
US20100146399A1 (en) * 2008-12-09 2010-06-10 Charles Laurence Stinson Method, apparatus and system for modifying website flow stack to manage site-wide configuration
US9715557B2 (en) * 2008-12-09 2017-07-25 Blackberry Limited System, device and method for providing context sensitive content on a computing device
US8700982B2 (en) * 2009-03-30 2014-04-15 Blackberry Limited System, device and method for providing interactive content on an computing device
WO2011070734A1 (ja) * 2009-12-07 2011-06-16 パナソニック株式会社 フォーマット変換サーバー、再生装置及び情報再生システム
US20110239109A1 (en) * 2010-03-24 2011-09-29 Mark Nixon Methods and apparatus to display process data
US9122764B2 (en) 2010-03-24 2015-09-01 Fisher-Rosemount Systems, Inc. Methods and apparatus to access process data stored on a server
US9275165B2 (en) * 2010-09-17 2016-03-01 Oracle International Corporation Method and apparatus for defining an application to allow polymorphic serialization
US9122767B2 (en) 2010-09-17 2015-09-01 Oracle International Corporation Method and apparatus for pre-rendering expected system response
CN103098055B (zh) * 2010-09-17 2018-01-12 甲骨文国际公司 移动客户关系管理中的递归导航
US8849762B2 (en) 2011-03-31 2014-09-30 Commvault Systems, Inc. Restoring computing environments, such as autorecovery of file systems at certain points in time
CN102982044A (zh) * 2011-09-07 2013-03-20 腾讯科技(深圳)有限公司 一种网页浏览方法及装置
US9106709B2 (en) * 2011-09-22 2015-08-11 Opera Software Asa Server side mobile audience intelligence creation
CN103067423B (zh) * 2011-10-20 2015-10-14 腾讯科技(深圳)有限公司 浏览器内核适配的方法和浏览器
CN103238148A (zh) * 2011-11-14 2013-08-07 松下电器产业株式会社 数据转换装置、数据转换方法及数据转换用的程序
US10157184B2 (en) 2012-03-30 2018-12-18 Commvault Systems, Inc. Data previewing before recalling large data files
CN102722551B (zh) * 2012-05-26 2014-11-26 广州市动景计算机科技有限公司 一种浏览器内核智能切换方法及系统
US20140101280A1 (en) * 2012-10-05 2014-04-10 Olaf Schmidt Generic serializer framework
CN103885990B (zh) * 2012-12-24 2019-07-05 腾讯科技(武汉)有限公司 搜索方法及系统
JP5870021B2 (ja) * 2012-12-25 2016-02-24 トヨタ自動車東日本株式会社 車両ドア開閉保持装置
US9633216B2 (en) 2012-12-27 2017-04-25 Commvault Systems, Inc. Application of information management policies based on operation with a geographic entity
AU2013371719B2 (en) * 2013-01-03 2017-03-02 Lg Electronics Inc. Method and apparatus for changing services in wireless communication system
US10685487B2 (en) * 2013-03-06 2020-06-16 Qualcomm Incorporated Disabling augmented reality (AR) devices at speed
US9459968B2 (en) 2013-03-11 2016-10-04 Commvault Systems, Inc. Single index to query multiple backup formats
US9262464B2 (en) * 2013-04-24 2016-02-16 Piriform Ltd. Cleaner with browser monitoring
US10169121B2 (en) 2014-02-27 2019-01-01 Commvault Systems, Inc. Work flow management for an information management system
US9648100B2 (en) 2014-03-05 2017-05-09 Commvault Systems, Inc. Cross-system storage management for transferring data across autonomous information management systems
US9823978B2 (en) 2014-04-16 2017-11-21 Commvault Systems, Inc. User-level quota management of data objects stored in information management systems
US9740574B2 (en) 2014-05-09 2017-08-22 Commvault Systems, Inc. Load balancing across multiple data paths
JP6338453B2 (ja) * 2014-05-30 2018-06-06 キヤノン株式会社 情報端末、制御方法及びプログラム
US9852026B2 (en) 2014-08-06 2017-12-26 Commvault Systems, Inc. Efficient application recovery in an information management system based on a pseudo-storage-device driver
US11249858B2 (en) 2014-08-06 2022-02-15 Commvault Systems, Inc. Point-in-time backups of a production application made accessible over fibre channel and/or ISCSI as data sources to a remote application by representing the backups as pseudo-disks operating apart from the production application and its host
US9444811B2 (en) 2014-10-21 2016-09-13 Commvault Systems, Inc. Using an enhanced data agent to restore backed up data across autonomous storage management systems
CN106294441A (zh) * 2015-05-27 2017-01-04 珠海金山办公软件有限公司 一种文档转换方法及装置
US9766825B2 (en) 2015-07-22 2017-09-19 Commvault Systems, Inc. Browse and restore for block-level backups
US10178192B2 (en) * 2015-09-15 2019-01-08 Qualcomm Innovation Center, Inc. Behavior-based browser bookmarks
CN105373589A (zh) * 2015-10-13 2016-03-02 浪潮软件集团有限公司 移动设备加载网络图片资源的优化方法
CN107615260B (zh) * 2015-10-22 2021-05-07 甲骨文国际公司 用于在事务处理环境中提供分布式高速缓存的系统和方法
US10296368B2 (en) 2016-03-09 2019-05-21 Commvault Systems, Inc. Hypervisor-independent block-level live browse for access to backed up virtual machine (VM) data and hypervisor-free file-level recovery (block-level pseudo-mount)
US10838821B2 (en) 2017-02-08 2020-11-17 Commvault Systems, Inc. Migrating content and metadata from a backup system
US10740193B2 (en) 2017-02-27 2020-08-11 Commvault Systems, Inc. Hypervisor-independent reference copies of virtual machine payload data based on block-level pseudo-mount
US10891069B2 (en) 2017-03-27 2021-01-12 Commvault Systems, Inc. Creating local copies of data stored in online data repositories
US10776329B2 (en) 2017-03-28 2020-09-15 Commvault Systems, Inc. Migration of a database management system to cloud storage
US11074140B2 (en) 2017-03-29 2021-07-27 Commvault Systems, Inc. Live browsing of granular mailbox data
TWI782955B (zh) * 2017-05-12 2022-11-11 香港商阿里巴巴集團服務有限公司 展示方法及裝置
US10664352B2 (en) 2017-06-14 2020-05-26 Commvault Systems, Inc. Live browsing of backed up data residing on cloned disks
WO2019094798A1 (en) 2017-11-10 2019-05-16 The Trustees Of Columbia University In The City Of New York Methods and compositions for promoting or inducing hair growth
US10795927B2 (en) 2018-02-05 2020-10-06 Commvault Systems, Inc. On-demand metadata extraction of clinical image data
US10789387B2 (en) 2018-03-13 2020-09-29 Commvault Systems, Inc. Graphical representation of an information management system
US10860443B2 (en) 2018-12-10 2020-12-08 Commvault Systems, Inc. Evaluation and reporting of recovery readiness in a data storage management system
US11176204B2 (en) * 2018-12-13 2021-11-16 Business Objects Software Limited Application runtime for cloud-based analytics engine
US11308034B2 (en) 2019-06-27 2022-04-19 Commvault Systems, Inc. Continuously run log backup with minimal configuration and resource usage from the source machine

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4837798A (en) * 1986-06-02 1989-06-06 American Telephone And Telegraph Company Communication system having unified messaging
US5675507A (en) 1995-04-28 1997-10-07 Bobo, Ii; Charles R. Message storage and delivery system
JP2964926B2 (ja) * 1995-08-29 1999-10-18 富士ゼロックス株式会社 データベース管理装置及び方法
US6029175A (en) 1995-10-26 2000-02-22 Teknowledge Corporation Automatic retrieval of changed files by a network software agent
US6473609B1 (en) * 1995-12-11 2002-10-29 Openwave Systems Inc. Method and architecture for interactive two-way communication devices to interact with a network
US6553410B2 (en) * 1996-02-27 2003-04-22 Inpro Licensing Sarl Tailoring data and transmission protocol for efficient interactive data transactions over wide-area networks
US5673322A (en) * 1996-03-22 1997-09-30 Bell Communications Research, Inc. System and method for providing protocol translation and filtering to access the world wide web from wireless or low-bandwidth networks
US5978833A (en) * 1996-12-31 1999-11-02 Intel Corporation Method and apparatus for accessing and downloading information from the internet
US6105028A (en) * 1997-06-26 2000-08-15 Digital Equipment Corporation Method and apparatus for accessing copies of documents using a web browser request interceptor
US6216152B1 (en) * 1997-10-27 2001-04-10 Sun Microsystems, Inc. Method and apparatus for providing plug in media decoders
KR100248007B1 (ko) * 1997-12-03 2000-10-02 윤종용 이동통신단말장치및그소프트웨어플랫폼
US6590588B2 (en) * 1998-05-29 2003-07-08 Palm, Inc. Wireless, radio-frequency communications using a handheld computer
US6338096B1 (en) 1998-06-10 2002-01-08 International Business Machines Corporation System uses kernals of micro web server for supporting HTML web browser in providing HTML data format and HTTP protocol from variety of data sources
US6278442B1 (en) 1998-06-26 2001-08-21 Research In Motion Limited Hand-held electronic device with a keyboard optimized for use with the thumbs
US7107548B2 (en) * 1998-10-28 2006-09-12 Yahoo! Inc. Method of controlling an internet browser interface and a controllable browser interface
US6631512B1 (en) * 1999-01-15 2003-10-07 Gillis E Onyeabor Method and system for database-driven, scalable web page development, deployment-download, and execution
US7050079B1 (en) * 2000-01-04 2006-05-23 International Business Machines Corporation System and method for dynamically generating viewable graphics
US6704024B2 (en) * 2000-08-07 2004-03-09 Zframe, Inc. Visual content browsing using rasterized representations
US6901437B1 (en) * 2000-10-06 2005-05-31 Verizon Laboratories Inc. Mobile cache for dynamically composing user-specific information
DE60143969D1 (de) 2000-12-22 2011-03-10 Research In Motion Ltd System und verfahren zum navigieren durch information mit einem drahtlosen kommunikationsgerät

Also Published As

Publication number Publication date
EP1643381A2 (de) 2006-04-05
US7761603B2 (en) 2010-07-20
HK1065199A1 (en) 2005-02-08
EP1638020A3 (de) 2006-05-24
US20040073626A1 (en) 2004-04-15
EP1428348A2 (de) 2004-06-16
EP1428348B1 (de) 2011-01-26
US7596631B2 (en) 2009-09-29
US20080222269A1 (en) 2008-09-11
USRE43678E1 (en) 2012-09-18
US7389361B2 (en) 2008-06-17
CA2432590A1 (en) 2002-07-04
EP2267619A1 (de) 2010-12-29
US8190776B2 (en) 2012-05-29
ATE497214T1 (de) 2011-02-15
EP1638020A2 (de) 2006-03-22
CA2432590C (en) 2010-08-10
AU2002226213A1 (en) 2002-07-08
WO2002052785A2 (en) 2002-07-04
WO2002052785A3 (en) 2004-04-08
US20100281391A1 (en) 2010-11-04
EP1643381A3 (de) 2006-06-07
USRE41786E1 (en) 2010-09-28
US20090313387A1 (en) 2009-12-17

Similar Documents

Publication Publication Date Title
DE60143969D1 (de) System und verfahren zum navigieren durch information mit einem drahtlosen kommunikationsgerät
EP1363254A3 (de) Identifiezierungsbasiertes Vorrichtung und Verfahren zum Zugriff auf einer online Ticket-Datenbank
DE60118692D1 (de) Wegebasierte Planungsarchitektur sowie Verfahren für drahtlose Kommunikation
HK1066272A1 (en) Real-time navigation system for mobile environment
GB2384637B (en) Systems and methods for providing information to users
WO2001008339A3 (en) Enhanced weather and traffic information from mobile communication devices
DE602004028831D1 (de)
WO2001057714A3 (en) Method and apparatus for allowing a remote site to interact with an intermediate database to facilitate access to the remote site
WO2001074037A3 (en) System and method for displaying the location of a wireless communications device
CY1105264T1 (el) Μεθοδος και συστημα για την διευκολυνση ασυρματης συναλλαγης ηλεκτρονικου εμποριου
FR2826510B1 (fr) Transistor vertical, dispositif de memoire ainsi que procede pour produire un transistor vertical
WO2001084373A3 (en) Information retrieval
WO2004062298A3 (en) Method of tracking mobile station location
ATE346454T1 (de) System und verfahren zur auswahl eines fernsehkanals
ATE385373T1 (de) Kommunikationssystem, mobileinrichtung und verfahren zur speicherung von seiten in einer mobileinrichtung
FR2812671B1 (fr) Procede de guidage d'un dispositif destine a inserer des elements dans le sol pour la realisation d'un ouvrage et dispositif d'insertion d'au moins un element dans le sol utilisant un tel procede de guidage
CN104755879A (zh) 信息处理装置及其浏览器控制方法
WO2007075948A3 (en) System and method for interface navigation
FR2803889B1 (fr) Dispositif et procede d'antipatinage electronique pour vehicule a transmission hydrostatique
DK1078346T3 (da) Fremgangsmåde til generering og tydning af et beliggenhedsreferencetilfælde på et digitalt kort
ATE250265T1 (de) Verfahren zur ermittlung von verkehrsinformationen sowie zentrale und endgerät
ATE537508T1 (de) Verfahren zum recherchieren in kommunikationsnetzwerken
WO2001098866A3 (en) Method and apparatus for requesting and retrieving medical information
WO2002017117A3 (en) Methods and apparatus for electronic bookmarking of vendor locations via a personal digital assistant or other user device
FR2813966B1 (fr) Procede d'exploitation d'un dispositif d'affichage multifonctionnel guide par menu, ainsi que dispositif d'affichage correspondant