IT958001B - Perfezionamento nei sistemi di trasmissione sicura di dati per terminali dati e simili - Google Patents

Perfezionamento nei sistemi di trasmissione sicura di dati per terminali dati e simili

Info

Publication number
IT958001B
IT958001B IT50413/72A IT5041372A IT958001B IT 958001 B IT958001 B IT 958001B IT 50413/72 A IT50413/72 A IT 50413/72A IT 5041372 A IT5041372 A IT 5041372A IT 958001 B IT958001 B IT 958001B
Authority
IT
Italy
Prior art keywords
improvement
similar
transmission systems
data transmission
terminals
Prior art date
Application number
IT50413/72A
Other languages
English (en)
Italian (it)
Original Assignee
Oak Electro Netics 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 Oak Electro Netics Corp filed Critical Oak Electro Netics Corp
Application granted granted Critical
Publication of IT958001B publication Critical patent/IT958001B/it

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B26/00—Alarm systems in which substations are interrogated in succession by a central station
    • G08B26/005—Alarm systems in which substations are interrogated in succession by a central station with substations connected in series, e.g. cascade
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/02—Monitoring continuously signalling or alarm systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Alarm Systems (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
IT50413/72A 1971-05-24 1972-05-22 Perfezionamento nei sistemi di trasmissione sicura di dati per terminali dati e simili IT958001B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14611171A 1971-05-24 1971-05-24

Publications (1)

Publication Number Publication Date
IT958001B true IT958001B (it) 1973-10-20

Family

ID=22515891

Family Applications (1)

Application Number Title Priority Date Filing Date
IT50413/72A IT958001B (it) 1971-05-24 1972-05-22 Perfezionamento nei sistemi di trasmissione sicura di dati per terminali dati e simili

Country Status (7)

Country Link
US (1) US3765016A (de)
CA (1) CA1003066A (de)
DE (1) DE2225244A1 (de)
FR (1) FR2138931A1 (de)
GB (1) GB1383777A (de)
IT (1) IT958001B (de)
ZA (1) ZA723558B (de)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3939460A (en) * 1974-04-24 1976-02-17 Barry N. Horn Security alarm system
DE2536946C2 (de) * 1975-08-19 1986-02-27 Firecom Inc., Woodside, N.Y. Schaltungsanordnung zur Überwachung von Ferneinheiten
JPS53136500A (en) * 1977-05-02 1978-11-29 Hochiki Co Alarm system
CA1216340A (en) * 1982-05-14 1987-01-06 Dale R. Younge Intrusion detector
US4538138A (en) * 1982-12-17 1985-08-27 American District Telegraph Company Integrated security system having a multiprogrammed controller
US4528610A (en) * 1983-07-05 1985-07-09 Apollo Fire Detectors Limited Short circuit fault isolation means for electrical circuit arrangements
JPS60186994A (ja) * 1984-03-05 1985-09-24 ホーチキ株式会社 火災感知器
GB8431883D0 (en) * 1984-12-18 1985-01-30 Gent Ltd Transmission system
GB2173618B (en) * 1985-04-12 1988-09-14 Emi Ltd Alarm monitoring installation
US4796025A (en) * 1985-06-04 1989-01-03 Simplex Time Recorder Co. Monitor/control communication net with intelligent peripherals
CH668496A5 (de) * 1985-07-10 1988-12-30 Cerberus Ag Verfahren zur uebertragung von messwerten in einem ueberwachungssystem.
JPH0632517B2 (ja) * 1985-07-19 1994-04-27 ホーチキ株式会社 異常監視装置
FR2633761B1 (fr) * 1988-06-30 1995-03-17 Hugon Emile Detecteur de fumees avec circuit integre pour adresse
FR2636157A1 (fr) * 1988-09-08 1990-03-09 Hugon Emile Centrale d'adresse et de programmation de detecteur d'alarme incendie
GB2259797B (en) * 1991-09-19 1995-08-16 Rockwell International Corp Fault tolerant multi-drop communications system
EP0626743B1 (de) * 1993-05-25 1999-09-08 Hochiki Corporation Leitungsfehlerüberwachungsvorrichtung
US5687215A (en) * 1995-04-10 1997-11-11 Ford Motor Company Vehicular emergency message system
US5572204A (en) * 1995-04-10 1996-11-05 Ford Motor Company Vehicular emergency message system
US5686910A (en) * 1995-04-10 1997-11-11 Ford Motor Company Vehicular emergency message system with automatic periodic call-in
US5890061A (en) * 1996-02-09 1999-03-30 Ford Motor Company Vehicular emergency message system with call restriction defeating
US5801913A (en) * 1996-04-29 1998-09-01 Kiddie-Fenwal, Inc. Isolation circuitry

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3214734A (en) * 1959-06-19 1965-10-26 American District Telegraph Co Protection signalling system having channel impedance alteration means for providing indications of remote station conditions
US3349374A (en) * 1963-08-05 1967-10-24 Motorola Inc Supervisory control system with message traffic control
US3350580A (en) * 1965-11-30 1967-10-31 Sperry Rand Corp Monitor employing logic gate and counter to indicate normal pulse-train failure after predetermined time interval
GB1178957A (en) * 1968-04-29 1970-01-28 Goodwin Alfred George Ive Improvements in and relating to Electrical Protective Systems
US3676878A (en) * 1968-10-14 1972-07-11 Riley Co The Variable monitoring system
US3624649A (en) * 1969-10-10 1971-11-30 Honeywell Inc Period readout error checking apparatus

Also Published As

Publication number Publication date
ZA723558B (en) 1973-03-28
CA1003066A (en) 1977-01-04
DE2225244A1 (de) 1972-12-14
FR2138931A1 (de) 1973-01-05
US3765016A (en) 1973-10-09
GB1383777A (en) 1974-02-12

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