DE3480454D1 - Threshold fail-safe logic circuit - Google Patents

Threshold fail-safe logic circuit

Info

Publication number
DE3480454D1
DE3480454D1 DE8484402029T DE3480454T DE3480454D1 DE 3480454 D1 DE3480454 D1 DE 3480454D1 DE 8484402029 T DE8484402029 T DE 8484402029T DE 3480454 T DE3480454 T DE 3480454T DE 3480454 D1 DE3480454 D1 DE 3480454D1
Authority
DE
Germany
Prior art keywords
logic circuit
safe logic
fail
threshold
threshold fail
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
DE8484402029T
Other languages
English (en)
Inventor
Jacques Guillaumin
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.)
Jeumont Schneider SA
Original Assignee
Jeumont Schneider SA
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 Jeumont Schneider SA filed Critical Jeumont Schneider SA
Application granted granted Critical
Publication of DE3480454D1 publication Critical patent/DE3480454D1/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/007—Fail-safe circuits

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Logic Circuits (AREA)
  • Amplifiers (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Manipulation Of Pulses (AREA)
  • Electronic Switches (AREA)
DE8484402029T 1983-10-13 1984-10-09 Threshold fail-safe logic circuit Expired DE3480454D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8316331A FR2553605B1 (fr) 1983-10-13 1983-10-13 Circuit logique a seuil et a securite intrinseque

Publications (1)

Publication Number Publication Date
DE3480454D1 true DE3480454D1 (en) 1989-12-14

Family

ID=9293114

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484402029T Expired DE3480454D1 (en) 1983-10-13 1984-10-09 Threshold fail-safe logic circuit

Country Status (11)

Country Link
US (1) US4677316A (de)
EP (1) EP0138706B1 (de)
BR (1) BR8405080A (de)
CA (1) CA1213006A (de)
DE (1) DE3480454D1 (de)
ES (1) ES536626A0 (de)
FR (1) FR2553605B1 (de)
IN (1) IN163002B (de)
MX (1) MX156832A (de)
PT (1) PT79313B (de)
ZA (1) ZA847983B (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9606174D0 (en) * 1996-03-23 1996-05-29 Atomic Energy Authority Uk Signal monitor
CA2395337C (en) 1999-12-30 2009-05-19 Ge Harris Railway Electronics, Llc Vital "and" gate apparatus and method
FR2870652B1 (fr) * 2004-05-24 2007-08-03 Scle Soc De Construction De Li Dispositif de securite reproduisant une fonction logique notamment un "et" de securite

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL274016A (de) * 1961-01-26
US3430066A (en) * 1965-08-31 1969-02-25 Westinghouse Air Brake Co Unit gain fail safe "and" logic circuit
GB1242540A (en) * 1967-12-21 1971-08-11 Westinghouse Brake & Signal Static gating circuits
US3995173A (en) * 1974-05-30 1976-11-30 General Signal Corporation Solid state fail-safe logic system
US4125784A (en) * 1977-07-27 1978-11-14 Westinghouse Air Brake Company Fail-safe or gate
US4130764A (en) * 1977-07-27 1978-12-19 Westinghouse Air Brake Company Fail-safe or logic circuit
FR2510845A1 (fr) * 1981-07-31 1983-02-04 Omera Segid Circuits logiques de securite utilisables notamment en signalisation ferroviaire et boite de traitement electronique, ou automatisme incorporant au moins un de ces circuits
JPS58188923A (ja) * 1982-04-28 1983-11-04 Nippon Denso Co Ltd 周期信号検出回路

Also Published As

Publication number Publication date
FR2553605B1 (fr) 1988-12-02
US4677316A (en) 1987-06-30
FR2553605A1 (fr) 1985-04-19
ES8506414A1 (es) 1985-07-16
ES536626A0 (es) 1985-07-16
MX156832A (es) 1988-10-05
BR8405080A (pt) 1985-08-20
ZA847983B (en) 1985-05-29
EP0138706A2 (de) 1985-04-24
EP0138706A3 (de) 1985-06-12
EP0138706B1 (de) 1989-11-08
CA1213006A (fr) 1986-10-21
PT79313B (fr) 1986-08-19
IN163002B (de) 1988-07-30
PT79313A (fr) 1984-11-01

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee