GB1083532A - Alternate operation device - Google Patents

Alternate operation device

Info

Publication number
GB1083532A
GB1083532A GB21298/66A GB2129866A GB1083532A GB 1083532 A GB1083532 A GB 1083532A GB 21298/66 A GB21298/66 A GB 21298/66A GB 2129866 A GB2129866 A GB 2129866A GB 1083532 A GB1083532 A GB 1083532A
Authority
GB
United Kingdom
Prior art keywords
stable
pulses
circuit
monostable
condition
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
GB21298/66A
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 Standard Electric Corp
Original Assignee
International Standard Electric 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 Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1083532A publication Critical patent/GB1083532A/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
    • G06F11/20—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
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/0405—Programme-control specially adapted for machine tool control and not otherwise provided for
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
    • H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme
    • H04Q3/54541—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme using multi-processor systems
    • H04Q3/5455—Multi-processor, parallelism, distributed systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
    • H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme
    • H04Q3/54541—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme using multi-processor systems
    • H04Q3/54558—Redundancy, stand-by

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Automation & Control Theory (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Control Of Multiple Motors (AREA)
  • Basic Packing Technique (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Programmable Controllers (AREA)

Abstract

1,083,532. Automatic exchange apparatus. INTERNATIONAL STANDARD ELECTRIC CORPORATION. May 13, 1966 [May 17, 1965], No. 21298/66. Heading H4K. The duplicated portions of a control circuit for a telephone exchange are switched into service alternately by means of the circuit illustrated which forms part of one of the control circuit portions. A bi-stable 12 switches its associated control portion in and out of service. Monostable circuits 2a and 2b, in the O condition when at rest, gate the 1 condition of bi-stable 3a so as to set bi-stable 12 to its 1 condition by clock pulses 7. The pulse setting 12 also sets 2a and resets the bi-stable corresponding to 12 in the other duplicate portion of the control circuit so as to switch it out of service. When monostable 2a falls back, having reset 3a and set 3b, the set state of 3b is gated to set monostable 2b. The time constant of 2b is made longer than 2a so that 2b is reset from the associated duplicate portion, where a circuit identical to that illustrated exists, before it resets itself supposing that the circuits are functioning normally. The pulses gated over 6b to set 2b, and the pulses gated over 6a to set 2a, are applied to an alarm circuit AL which operates in the absence of the pulses.
GB21298/66A 1965-05-17 1966-05-13 Alternate operation device Expired GB1083532A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR17295A FR1453879A (en) 1965-05-17 1965-05-17 Alternate operating device

Publications (1)

Publication Number Publication Date
GB1083532A true GB1083532A (en) 1967-09-13

Family

ID=8578904

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21298/66A Expired GB1083532A (en) 1965-05-17 1966-05-13 Alternate operation device

Country Status (7)

Country Link
BE (1) BE681143A (en)
CH (1) CH456733A (en)
DE (1) DE1487631B2 (en)
DK (1) DK116947B (en)
ES (1) ES326834A1 (en)
FR (1) FR1453879A (en)
GB (1) GB1083532A (en)

Also Published As

Publication number Publication date
FR1453879A (en) 1966-07-22
DE1487631B2 (en) 1970-09-10
BE681143A (en) 1966-11-17
ES326834A1 (en) 1967-03-16
DK116947B (en) 1970-03-02
DE1487631A1 (en) 1969-01-16
CH456733A (en) 1968-07-31

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