GB1454781A - Counter synchronization circuit - Google Patents

Counter synchronization circuit

Info

Publication number
GB1454781A
GB1454781A GB1578373A GB1578373A GB1454781A GB 1454781 A GB1454781 A GB 1454781A GB 1578373 A GB1578373 A GB 1578373A GB 1578373 A GB1578373 A GB 1578373A GB 1454781 A GB1454781 A GB 1454781A
Authority
GB
United Kingdom
Prior art keywords
counters
registers
parallel
synchronization circuit
majority voting
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
Application number
GB1578373A
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.)
BAE Systems Electronics Ltd
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
Priority to GB1578373A priority Critical patent/GB1454781A/en
Publication of GB1454781A publication Critical patent/GB1454781A/en
Expired legal-status Critical Current

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
    • G06F11/18—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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K21/00—Details of pulse counters or frequency dividers
    • H03K21/40—Monitoring; Error detection; Preventing or correcting improper counter operation
    • H03K21/406—Synchronisation of counters

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

1454781 Synchronizing counters MARCONI CO Ltd 10 Jan 1974 [3 April 1973] 15783/73 Heading G4D In order to synchronize the counts in an odd number of counters 12 their contents are read in parallel into respective shift registers 14 which are then cycled to present respective bits of the count to a majority voting circuit 18 which corrects any dissenting vote to provide bit by bit agreement of the counts stored in the registers. When the cycle is complete the values in the registers are read back to the respective counters to correct them if necessary. As described each shift register 14 is associated with a majority voting circuit 18 all of which act in parallel on the same data.
GB1578373A 1973-04-03 1973-04-03 Counter synchronization circuit Expired GB1454781A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1578373A GB1454781A (en) 1973-04-03 1973-04-03 Counter synchronization circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1578373A GB1454781A (en) 1973-04-03 1973-04-03 Counter synchronization circuit

Publications (1)

Publication Number Publication Date
GB1454781A true GB1454781A (en) 1976-11-03

Family

ID=10065391

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1578373A Expired GB1454781A (en) 1973-04-03 1973-04-03 Counter synchronization circuit

Country Status (1)

Country Link
GB (1) GB1454781A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0384177A2 (en) * 1989-02-23 1990-08-29 International Business Machines Corporation Automatic vernier synchronization of skewed data streams
EP1378862A1 (en) * 2001-03-13 2004-01-07 Ecchandes Inc. Visual device, interlocking counter, and image sensor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0384177A2 (en) * 1989-02-23 1990-08-29 International Business Machines Corporation Automatic vernier synchronization of skewed data streams
EP0384177A3 (en) * 1989-02-23 1991-09-11 International Business Machines Corporation Automatic vernier synchronization of skewed data streams
EP1378862A1 (en) * 2001-03-13 2004-01-07 Ecchandes Inc. Visual device, interlocking counter, and image sensor
EP1378862A4 (en) * 2001-03-13 2009-06-17 Ecchandes Inc Visual device, interlocking counter, and image sensor
US7664220B2 (en) 2001-03-13 2010-02-16 Ecchandes Inc. Visual device, interlocking counter, and image sensor

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee