DE3373568D1 - Multiple redundant clock system comprising a number of mutually synchronizing clocks, and clock circuit for use in such a clock system - Google Patents
Multiple redundant clock system comprising a number of mutually synchronizing clocks, and clock circuit for use in such a clock systemInfo
- Publication number
- DE3373568D1 DE3373568D1 DE8383201439T DE3373568T DE3373568D1 DE 3373568 D1 DE3373568 D1 DE 3373568D1 DE 8383201439 T DE8383201439 T DE 8383201439T DE 3373568 T DE3373568 T DE 3373568T DE 3373568 D1 DE3373568 D1 DE 3373568D1
- Authority
- DE
- Germany
- Prior art keywords
- clock
- clock system
- multiple redundant
- synchronizing clocks
- mutually synchronizing
- 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
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/1604—Error detection or correction of the data by redundancy in hardware where the fault affects the clock signals of a processing unit and the redundancy is at or within the level of clock signal generation hardware
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/18—Error detection or correction of the data by redundancy in hardware using passive fault-masking of the redundant circuits
- G06F11/187—Voting techniques
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8203921A NL8203921A (nl) | 1982-10-11 | 1982-10-11 | Multipel redundant kloksysteem, bevattende een aantal onderling synchroniserende klokken, en klokschakeling voor gebruik in zo een kloksysteem. |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3373568D1 true DE3373568D1 (en) | 1987-10-15 |
Family
ID=19840391
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8383201439T Expired DE3373568D1 (en) | 1982-10-11 | 1983-10-07 | Multiple redundant clock system comprising a number of mutually synchronizing clocks, and clock circuit for use in such a clock system |
Country Status (6)
Country | Link |
---|---|
US (1) | US4779008A (de) |
EP (1) | EP0107236B1 (de) |
JP (1) | JPS5990125A (de) |
CA (1) | CA1210159A (de) |
DE (1) | DE3373568D1 (de) |
NL (1) | NL8203921A (de) |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61154221A (ja) * | 1984-12-26 | 1986-07-12 | Toshiba Corp | 多数決回路 |
JPS6268314A (ja) * | 1985-09-20 | 1987-03-28 | Nec Corp | タイミング信号同期方式 |
NL8502768A (nl) * | 1985-10-10 | 1987-05-04 | Philips Nv | Dataverwerkingsinrichting, die uit meerdere, parallel-werkende dataverwerkingsmodules bestaat, multipel redundante klokinrichting, bevattende een aantal onderling zelf-synchroniserende klokschakelingen voor gebruik in zo een dataverwerkingsinrichting, en klokschakeling voor gebruik in zo een klokinrichting. |
DE3638947C2 (de) * | 1986-11-14 | 1995-08-31 | Bosch Gmbh Robert | Verfahren zur Synchronisation von Rechnern eines Mehrrechnersystems und Mehrrechnersystem |
DE3643002A1 (de) * | 1986-12-17 | 1988-06-30 | Philips Patentverwaltung | Schaltungsanordnung zur synchronisation von einrichtungen in den vermittlungs- und verstaerkerstellen eines zeitmultiplex-uebertragungssystems |
US5133064A (en) * | 1987-04-27 | 1992-07-21 | Hitachi, Ltd. | Data processing system generating clock signal from an input clock, phase locked to the input clock and used for clocking logic devices |
JP2578817B2 (ja) * | 1987-07-27 | 1997-02-05 | 日本電気株式会社 | マイクロプロセツサ |
US4788670A (en) * | 1987-08-18 | 1988-11-29 | Siemens Aktiengesellschaft | Clock voltage supply |
AU616213B2 (en) * | 1987-11-09 | 1991-10-24 | Tandem Computers Incorporated | Method and apparatus for synchronizing a plurality of processors |
JPH0797328B2 (ja) * | 1988-10-25 | 1995-10-18 | インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン | フオールト・トレラント同期システム |
AU625293B2 (en) * | 1988-12-09 | 1992-07-09 | Tandem Computers Incorporated | Synchronization of fault-tolerant computer system having multiple processors |
US4965717A (en) * | 1988-12-09 | 1990-10-23 | Tandem Computers Incorporated | Multiple processor system having shared memory with private-write capability |
EP0394725B1 (de) * | 1989-04-28 | 1996-02-14 | Siemens Aktiengesellschaft | Taktverteilereinrichtung |
US4979191A (en) * | 1989-05-17 | 1990-12-18 | The Boeing Company | Autonomous N-modular redundant fault tolerant clock system |
US5355090A (en) * | 1989-10-06 | 1994-10-11 | Rockwell International Corporation | Phase corrector for redundant clock systems and method |
US5295258A (en) * | 1989-12-22 | 1994-03-15 | Tandem Computers Incorporated | Fault-tolerant computer system with online recovery and reintegration of redundant components |
US5203004A (en) * | 1990-01-08 | 1993-04-13 | Tandem Computers Incorporated | Multi-board system having electronic keying and preventing power to improperly connected plug-in board with improperly configured diode connections |
US5118975A (en) * | 1990-03-05 | 1992-06-02 | Thinking Machines Corporation | Digital clock buffer circuit providing controllable delay |
US5124569A (en) * | 1990-10-18 | 1992-06-23 | Star Technologies, Inc. | Digital phase-lock loop system with analog voltage controlled oscillator |
US5295257A (en) * | 1991-05-24 | 1994-03-15 | Alliedsignal Inc. | Distributed multiple clock system and a method for the synchronization of a distributed multiple system |
US5373537A (en) * | 1991-09-02 | 1994-12-13 | Siemens Aktiengesellschaft | Method and apparatus for the synchronization of a clock means of a telecommunication switching system |
US5377205A (en) * | 1993-04-15 | 1994-12-27 | The Boeing Company | Fault tolerant clock with synchronized reset |
US5557623A (en) * | 1994-08-12 | 1996-09-17 | Honeywell Inc. | Accurate digital fault tolerant clock |
US5815041A (en) * | 1996-04-12 | 1998-09-29 | Silicon Image, Inc. | High-speed and high-precision phase locked loop having phase detector with dynamic logic structure |
US6141769A (en) * | 1996-05-16 | 2000-10-31 | Resilience Corporation | Triple modular redundant computer system and associated method |
KR100206476B1 (ko) * | 1997-03-20 | 1999-07-01 | 윤종용 | 디지털 마이크로웨이브 시스템에서 송신용 국부발진주파수를 동기화시키기 위한 회로 |
US6326826B1 (en) | 1999-05-27 | 2001-12-04 | Silicon Image, Inc. | Wide frequency-range delay-locked loop circuit |
US6757350B1 (en) | 1999-06-12 | 2004-06-29 | Cisco Technology, Inc. | Redundant clock generation and distribution |
DE19947662A1 (de) * | 1999-10-04 | 2001-04-12 | Bayerische Motoren Werke Ag | Betriebsverfahren für einen Datenbus |
WO2002099609A1 (en) * | 2001-06-06 | 2002-12-12 | Marconi Communications, Inc. | Multi-layer control interface for clock switching in a communications element |
US6839391B2 (en) * | 2002-01-08 | 2005-01-04 | Motorola, Inc. | Method and apparatus for a redundant clock |
US6970045B1 (en) | 2003-06-25 | 2005-11-29 | Nel Frequency Controls, Inc. | Redundant clock module |
US7199671B2 (en) * | 2005-03-31 | 2007-04-03 | Hewlett-Packard Development Company, L.P. | Systems and methods for clock generation using hot-swappable oscillators |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3859466A (en) * | 1972-05-23 | 1975-01-07 | Siemens Ag | Reciprocal synchronization of oscillators of a time multiplex telephone communication network |
CH556576A (de) * | 1973-03-28 | 1974-11-29 | Hasler Ag | Einrichtung zur synchronisierung dreier rechner. |
CH623669A5 (de) * | 1973-11-14 | 1981-06-15 | Agie Ag Ind Elektronik | |
JPS5620746Y2 (de) * | 1974-07-04 | 1981-05-16 | ||
FR2379857A1 (fr) * | 1977-02-07 | 1978-09-01 | Cii Honeywell Bull | Generateur de signaux d'horloges dans un systeme de traitement de l'information |
FR2390856A1 (fr) * | 1977-05-10 | 1978-12-08 | Lannionnais Electronique | Base de temps |
US4239982A (en) * | 1978-06-14 | 1980-12-16 | The Charles Stark Draper Laboratory, Inc. | Fault-tolerant clock system |
FR2484104A1 (fr) * | 1980-06-06 | 1981-12-11 | Chomette Andre | Boucle d'asservissement a microprocesseur |
US4419629A (en) * | 1980-06-25 | 1983-12-06 | Sperry Corporation | Automatic synchronous switch for a plurality of asynchronous oscillators |
NL8202685A (nl) * | 1982-07-05 | 1984-02-01 | Philips Nv | Kloksignaalregenerator met hoge stabiliteit. |
-
1982
- 1982-10-11 NL NL8203921A patent/NL8203921A/nl not_active Application Discontinuation
-
1983
- 1983-10-07 CA CA000438592A patent/CA1210159A/en not_active Expired
- 1983-10-07 DE DE8383201439T patent/DE3373568D1/de not_active Expired
- 1983-10-07 EP EP83201439A patent/EP0107236B1/de not_active Expired
- 1983-10-11 JP JP58189809A patent/JPS5990125A/ja active Granted
-
1987
- 1987-06-17 US US07/063,542 patent/US4779008A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA1210159A (en) | 1986-08-19 |
JPS5990125A (ja) | 1984-05-24 |
EP0107236A1 (de) | 1984-05-02 |
US4779008A (en) | 1988-10-18 |
JPH0420484B2 (de) | 1992-04-03 |
NL8203921A (nl) | 1984-05-01 |
EP0107236B1 (de) | 1987-09-09 |
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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: PHILIPS ELECTRONICS N.V., EINDHOVEN, NL |
|
8339 | Ceased/non-payment of the annual fee |