SE366622B - - Google Patents

Info

Publication number
SE366622B
SE366622B SE04981/70A SE498170A SE366622B SE 366622 B SE366622 B SE 366622B SE 04981/70 A SE04981/70 A SE 04981/70A SE 498170 A SE498170 A SE 498170A SE 366622 B SE366622 B SE 366622B
Authority
SE
Sweden
Application number
SE04981/70A
Inventor
C White
Original Assignee
Marconi Co 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 Marconi Co Ltd filed Critical Marconi Co Ltd
Publication of SE366622B publication Critical patent/SE366622B/xx

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
    • G06F11/183—Error detection or correction of the data by redundancy in hardware using passive fault-masking of the redundant circuits by voting, the voting not being performed by the redundant components
    • 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
    • H03L7/07—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop using several loops, e.g. for redundant clock signal generation
    • 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
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
SE04981/70A 1969-04-14 1970-04-13 SE366622B (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB09089/69A GB1263276A (en) 1969-04-14 1969-04-14 Improvements in or relating to clock oscillator arrangements

Publications (1)

Publication Number Publication Date
SE366622B true SE366622B (xx) 1974-04-29

Family

ID=10123604

Family Applications (1)

Application Number Title Priority Date Filing Date
SE04981/70A SE366622B (xx) 1969-04-14 1970-04-13

Country Status (4)

Country Link
US (1) US3662277A (xx)
GB (1) GB1263276A (xx)
NO (1) NO128973B (xx)
SE (1) SE366622B (xx)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795872A (en) * 1972-09-18 1974-03-05 Bell Telephone Labor Inc Protection scheme for clock signal recovery arrangement
US3893042A (en) * 1973-12-12 1975-07-01 Us Navy Lock indicator for phase-locked loops
US4025874A (en) * 1976-04-30 1977-05-24 Rockwell International Corporation Master/slave clock arrangement for providing reliable clock signal
NL7707260A (nl) * 1977-06-30 1979-01-03 Bell Telephone Mfg Moederklokinrichting.
US4121172A (en) * 1977-11-14 1978-10-17 Magnetic Peripherals Inc. Dual loop phase locked oscillator system
IT7825268A0 (it) * 1978-07-03 1978-07-03 Sits Soc It Telecom Siemens Disposizione circuitale per individuare l'elemento guasto in una pluralita' di oscillatori controllati in fase.
AU549343B2 (en) * 1981-06-08 1986-01-23 British Telecommunications Public Limited Company Phase locking
US4511859A (en) * 1982-08-30 1985-04-16 At&T Bell Laboratories Apparatus for generating a common output signal as a function of any of a plurality of diverse input signals
US5371764A (en) * 1992-06-26 1994-12-06 International Business Machines Corporation Method and apparatus for providing an uninterrupted clock signal in a data processing system
DE69315010T2 (de) * 1992-08-20 1998-04-16 Koninkl Philips Electronics Nv Oszillator mit mehrphasigen Ausgängen
US5377206A (en) * 1993-02-03 1994-12-27 Honeywell Inc. Multiple-channel fault-tolerant clock system
EP2037602B1 (en) * 2007-09-11 2010-08-18 Alcatel-Lucent USA Inc. System and method for supervising a plurality of oscillators in a network

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2774872A (en) * 1952-12-17 1956-12-18 Bell Telephone Labor Inc Phase shifting circuit
US3297955A (en) * 1965-09-15 1967-01-10 Gen Electric Plural oscillators synchronized to the highest frequency
US3479603A (en) * 1966-07-28 1969-11-18 Bell Telephone Labor Inc A plurality of sources connected in parallel to produce a timing pulse output while any source is operative
US3370251A (en) * 1966-12-09 1968-02-20 Bell Telephone Labor Inc Plural oscillators with a circuit to identify a malfunctioning oscillator
US3518567A (en) * 1968-08-05 1970-06-30 Varian Associates Sequential frequency combiner for frequency standard systems

Also Published As

Publication number Publication date
GB1263276A (en) 1972-02-09
US3662277A (en) 1972-05-09
NO128973B (xx) 1974-02-04

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