JP5165871B2 - Ｔｏｄクロックを較正するためのシステムおよび方法 - Google Patents

Ｔｏｄクロックを較正するためのシステムおよび方法 Download PDF

Info

Publication number
JP5165871B2
JP5165871B2 JP2006243591A JP2006243591A JP5165871B2 JP 5165871 B2 JP5165871 B2 JP 5165871B2 JP 2006243591 A JP2006243591 A JP 2006243591A JP 2006243591 A JP2006243591 A JP 2006243591A JP 5165871 B2 JP5165871 B2 JP 5165871B2
Authority
JP
Japan
Prior art keywords
value
oscillator
time
tod
skew
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
JP2006243591A
Other languages
English (en)
Japanese (ja)
Other versions
JP2007078688A5 (enExample
JP2007078688A (ja
Inventor
デイヴィッド・エイ・エルコ
デニス・ジェイ・ダーレン
ロナルド・エム・スミス・サー
リー・チャン
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.)
International Business Machines Corp
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 JP2007078688A publication Critical patent/JP2007078688A/ja
Publication of JP2007078688A5 publication Critical patent/JP2007078688A5/ja
Application granted granted Critical
Publication of JP5165871B2 publication Critical patent/JP5165871B2/ja
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
    • G06F1/14—Time supervision arrangements, e.g. real time clock
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G7/00—Synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H04J3/0644—External master-clock
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0685—Clock or time synchronisation in a node; Intranode synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/28—Timers or timing mechanisms used in protocols

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Clocks (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
JP2006243591A 2005-09-09 2006-09-08 Ｔｏｄクロックを較正するためのシステムおよび方法 Expired - Fee Related JP5165871B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/223,642 US7454648B2 (en) 2005-09-09 2005-09-09 System and method for calibrating a time of day clock in a computing system node provided in a multi-node network
US11/223,642 2005-09-09

Publications (3)

Publication Number Publication Date
JP2007078688A JP2007078688A (ja) 2007-03-29
JP2007078688A5 JP2007078688A5 (enExample) 2009-01-08
JP5165871B2 true JP5165871B2 (ja) 2013-03-21

Family

ID=37854944

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006243591A Expired - Fee Related JP5165871B2 (ja) 2005-09-09 2006-09-08 Ｔｏｄクロックを較正するためのシステムおよび方法

Country Status (4)

Country Link
US (2) US7454648B2 (enExample)
JP (1) JP5165871B2 (enExample)
CN (1) CN100583730C (enExample)
TW (1) TWI369593B (enExample)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7356725B2 (en) * 2005-09-09 2008-04-08 International Business Machines Corporation Method and apparatus for adjusting a time of day clock without adjusting the stepping rate of an oscillator
US7899894B2 (en) 2006-08-30 2011-03-01 International Business Machines Corporation Coordinated timing network configuration parameter update procedure
US8055801B2 (en) * 2006-09-15 2011-11-08 International Business Machines Corporation Pulse-per-second attachment for STP
US7617410B2 (en) * 2006-09-15 2009-11-10 International Business Machines Corporation Simultaneously updating logical time of day (TOD) clocks for multiple cpus in response to detecting a carry at a pre-determined bit position of a physical clock
US7451339B2 (en) * 2006-09-15 2008-11-11 International Business Machines Corporation Pulse-per-second attachment for STP
US7797414B2 (en) * 2007-01-31 2010-09-14 International Business Machines Corporation Establishing a logical path between servers in a coordinated timing network
US7783736B2 (en) 2007-01-31 2010-08-24 International Business Machines Corporation Definition of an active stratum-1 server in a coordinated timing network
US7783913B2 (en) 2007-01-31 2010-08-24 International Business Machines Corporation Facilitating recovery in a coordinated timing network
US9112626B2 (en) * 2007-01-31 2015-08-18 International Business Machines Corporation Employing configuration information to determine the role of a server in a coordinated timing network
US8738792B2 (en) * 2007-01-31 2014-05-27 International Business Machines Corporation Server time protocol messages and methods
US7689718B2 (en) * 2007-01-31 2010-03-30 International Business Machines Corporation Channel subsystem server time protocol commands and system therefor
CL2008002352A1 (es) * 2007-08-10 2010-08-27 Rich Products Corp Producto alimenticio liquido batible que comprende hidrocoloides celulósicos, un agente gelificante, grasas triglicéridas, un edulcorante, goma exudada, proteínas y agua, donde dicho producto es libre de emulsionantes a base de grasa y es libre de grasas lácteas.
CA2701717C (en) 2007-10-06 2016-11-29 Arbitron, Inc. Gathering research data
US7961554B2 (en) * 2008-01-11 2011-06-14 Cellnet Innovations, Inc. Methods and systems for accurate time-keeping on metering and other network communication devices
US8416811B2 (en) * 2008-04-10 2013-04-09 International Business Machines Corporation Coordinated timing network having servers of different capabilities
US7925916B2 (en) 2008-04-10 2011-04-12 International Business Machines Corporation Failsafe recovery facility in a coordinated timing network
US8031627B2 (en) * 2008-07-10 2011-10-04 At&T Intellectual Property I, L.P. Methods and apparatus to deploy and monitor network layer functionalities
US8055929B2 (en) 2008-08-06 2011-11-08 International Business Machines Corporation Method and apparatus for maintaining time in a computer system
US7873862B2 (en) * 2008-10-21 2011-01-18 International Business Machines Corporation Maintaining a primary time server as the current time server in response to failure of time code receivers of the primary time server
US8369186B2 (en) * 2009-01-09 2013-02-05 Primex Wireless, Inc. System and method of increasing battery life of a timekeeping device
US8891338B2 (en) * 2009-01-29 2014-11-18 Itron, Inc. Measuring the accuracy of an endpoint clock from a remote device
US9491085B2 (en) 2010-05-24 2016-11-08 At&T Intellectual Property I, L.P. Methods and apparatus to route control packets based on address partitioning
US8699484B2 (en) 2010-05-24 2014-04-15 At&T Intellectual Property I, L.P. Methods and apparatus to route packets in a network
US20120001748A1 (en) * 2010-06-30 2012-01-05 Norman Ladouceur Methods and apparatus for visually supplementing a graphical user interface
US8989730B2 (en) 2012-06-29 2015-03-24 At&T Mobility Ii Llc Detection of faulty radio oscillator or faulty mobile timing measurements
US8959381B2 (en) * 2012-09-05 2015-02-17 Khalifa University of Science, Technology, and Research Method and system for clock offset and skew estimation
US9104364B2 (en) * 2012-11-15 2015-08-11 International Business Machines Corporation Generation and distribution of steered time interval pulse to a plurality of hardware components of the computing system
GB201310114D0 (en) * 2013-06-06 2013-07-24 Sec Dep For Business Innovation & Skills The Time synchronisation control apparatus and method
US9571572B2 (en) * 2014-05-01 2017-02-14 International Business Machines Corporation Peer-to-peer networking through universal port connections
CN104935630B (zh) * 2015-04-23 2018-03-23 南京信息工程大学 基于http的毫秒级时钟校准方法
CN106569544B (zh) * 2015-10-10 2019-07-30 上海东软载波微电子有限公司 实时时钟芯片及其时钟校准方法、装置
US9645553B1 (en) * 2016-01-28 2017-05-09 Raytheon Bbn Technologies Corp. Secure time reference using multiple time sources
CN108616977B (zh) * 2018-06-21 2020-06-16 同济大学 一种基于最小二乘平差的uwb多点时延校正方法
US10903924B2 (en) 2019-02-07 2021-01-26 International Business Machines Corporation Setting primary reference time of server time protocol facility of a coordinated timing network to a precision-time-protocol source
US10958727B2 (en) * 2019-02-07 2021-03-23 International Business Machines Corporation Facilitating precision time protocol use in a coordinated timing network
US11097844B1 (en) 2020-03-18 2021-08-24 B/E Aerospace, Inc. Mobile self-vending beverage distribution system
US11564185B2 (en) 2020-04-17 2023-01-24 Rockwell Collins, Inc. Precise time synchronization for 4G automatic link establishment (ALE) stations
CN116301197B (zh) * 2023-04-27 2023-08-04 上海合见工业软件集团有限公司 时钟数据恢复方法、电子设备和介质

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4448543A (en) * 1983-01-17 1984-05-15 Rockwell International Corporation Time-of-day clock having a temperature compensated low power frequency source
US4903251A (en) 1989-09-05 1990-02-20 Ford Motor Company Accuracy adjustment for time-of-day clock using a microcontroller
JP2907958B2 (ja) * 1990-06-06 1999-06-21 富士通株式会社 時刻機構制御方法
US5041798A (en) * 1990-06-12 1991-08-20 International Business Machines Corporation Time reference with proportional steering
US5444780A (en) * 1993-07-22 1995-08-22 International Business Machines Corporation Client/server based secure timekeeping system
US5654718A (en) 1994-10-06 1997-08-05 Garmin Corporation GPS receiver device and method for calibrating a temperature uncompensated crystal oscillator
US5774497A (en) * 1996-04-12 1998-06-30 Hewlett-Packard Co Method and apparatus for PCR jitter measurement in an MPEG-2 transport stream
DE19701939C2 (de) * 1997-01-21 1998-11-12 Fraunhofer Ges Forschung Verfahren zum Erfassen einer an einer digitalen, bearbeiteten Information ausgeübten Manipulation
JPH10325887A (ja) 1997-03-28 1998-12-08 Seiko Instr Inc 論理緩急回路
US5956289A (en) 1997-06-17 1999-09-21 Micron Technology, Inc. Clock signal from an adjustable oscillator for an integrated circuit
US6202056B1 (en) * 1998-04-03 2001-03-13 Audiosoft, Inc. Method for computer network operation providing basis for usage fees
DE29820339U1 (de) * 1998-11-13 2000-01-20 Siemens AG, 80333 München Netzwerkteilnehmer
US20020003751A1 (en) * 1998-11-19 2002-01-10 Ronald D. Smith Electronic system having a self-setting time of day clock
DE29820820U1 (de) * 1998-11-20 2000-02-10 Siemens AG, 80333 München Netzwerkteilnehmer
US6591370B1 (en) * 1999-12-23 2003-07-08 International Business Machines Corporation Multinode computer system with distributed clock synchronization system
US6763474B1 (en) * 2000-08-03 2004-07-13 International Business Machines Corporation System for synchronizing nodes in a heterogeneous computer system by using multistage frequency synthesizer to dynamically adjust clock frequency of the nodes
JP2003248076A (ja) * 2002-02-27 2003-09-05 Konica Corp 画像形成装置
US7304981B2 (en) * 2002-09-09 2007-12-04 Itt Manufacturing Enterprises Inc. Apparatus and method of flywheel time-of-day (TOD) synchronization
JP2004170139A (ja) * 2002-11-18 2004-06-17 Hitachi Electronics Service Co Ltd 端末のｔｏｄ自動修正方法及び自動修正システム
JP4264494B2 (ja) * 2003-05-15 2009-05-20 Ｏｋｉセミコンダクタ株式会社 標準電波受信時刻装置

Also Published As

Publication number Publication date
US8132038B2 (en) 2012-03-06
JP2007078688A (ja) 2007-03-29
TWI369593B (en) 2012-08-01
US20070058491A1 (en) 2007-03-15
TW200720867A (en) 2007-06-01
US20090070618A1 (en) 2009-03-12
CN1929362A (zh) 2007-03-14
CN100583730C (zh) 2010-01-20
US7454648B2 (en) 2008-11-18

Similar Documents

Publication Publication Date Title
JP5165871B2 (ja) Ｔｏｄクロックを較正するためのシステムおよび方法
US11994896B2 (en) Maintaining the correct time when counter values are transferred between clock domains
US8438415B2 (en) Performing a perform timing facility function instruction for synchronizing TOD clocks
EP3893427B1 (en) Clock synchronization method and apparatus and storage medium
US7058838B2 (en) System and method for synchronizing a plurality of processors in a multiprocessor computer platform employing a global clock counter
EP2512048A2 (en) System and method to overcome wander accumulation to achieve precision clock distribution over large networks
US20210385058A1 (en) Method and apparatus for synchronizing different communication ports
US20190207695A1 (en) Methods and Systems For Estimating Offset Skew and Drift
US11907754B2 (en) System to trigger time-dependent action
EP1179763B1 (en) Real time stamp distribution system
CN117675072A (zh) 同步时间确定方法及时间同步装置、时间同步系统、介质
JP2020077929A (ja) 時刻配信装置、同期システム、及びプログラム
CN111443685B (zh) 用于在控制设备中提供通用时间的方法以及控制设备
JP4734115B2 (ja) 計時システム、時刻サービス提供装置及び時刻サービス提供システム
Okabe et al. Avoiding year 2038 problem on 32-bit linux by rewinding time on clock synchronization
Bilekdemir Clock drift analysis in a multihost system
US20250055587A1 (en) Providing arbitrarily long timer from shorter underlying hardware counter
WO2024166272A1 (ja) 時刻補正装置及び時刻補正方法
CN110098971A (zh) 一种网络链路不对称测量方法和网络节点
CN120582737A (zh) 时钟同步方法、装置、电子设备及介质
CN120979590A (zh) 一种时空同步方法、装置、电子设备及介质
KR20040027193A (ko) 교환기 프로세서의 클럭 보정 방법
KR20030023136A (ko) 이중화 액티브 프로세서 상태 관리 방법

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20081113

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20090427

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110905

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20111004

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20111226

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20111226

RD12 Notification of acceptance of power of sub attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7432

Effective date: 20111226

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20111227

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20120426

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20120510

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20120510

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20121205

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20121205

RD14 Notification of resignation of power of sub attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7434

Effective date: 20121205

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20121220

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20151228

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 5165871

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees