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EP0929057A3 - Control system and transmission method - Google Patents

Control system and transmission method Download PDF

Info

Publication number
EP0929057A3
EP0929057A3 EP99300129A EP99300129A EP0929057A3 EP 0929057 A3 EP0929057 A3 EP 0929057A3 EP 99300129 A EP99300129 A EP 99300129A EP 99300129 A EP99300129 A EP 99300129A EP 0929057 A3 EP0929057 A3 EP 0929057A3
Authority
EP
European Patent Office
Prior art keywords
control system
information
addressee
transmission method
operation code
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.)
Withdrawn
Application number
EP99300129A
Other languages
German (de)
French (fr)
Other versions
EP0929057A2 (en
Inventor
Kenth Sandell
Christer Stakkestad
Tetsuo Kimura
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.)
Nittan Co Ltd
Original Assignee
Nittan 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 Nittan Co Ltd filed Critical Nittan Co Ltd
Publication of EP0929057A2 publication Critical patent/EP0929057A2/en
Publication of EP0929057A3 publication Critical patent/EP0929057A3/en
Withdrawn legal-status Critical Current

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
    • G08B26/001—Alarm systems in which substations are interrogated in succession by a central station with individual interrogation of substations connected in parallel

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
  • Small-Scale Networks (AREA)
  • Fire Alarms (AREA)
  • Communication Control (AREA)

Abstract

In the control system, the units each have inherent ID information allocated thereto and the transmission message includes at least address information of an addressee and an operation code. The operation code is calculated in consideration of at least ID information of the addressee. For example, the operation code is calculated in the form of a checksum of at least said address information of said addressee and said ID information of said addressee. Such a control system is capable of significantly enhancing security in exchange of information, when it is carried out between units using a transmission message.
EP99300129A 1998-01-13 1999-01-08 Control system and transmission method Withdrawn EP0929057A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1808798 1998-01-13
JP10018087A JPH11203570A (en) 1998-01-13 1998-01-13 Control system and transmission method

Publications (2)

Publication Number Publication Date
EP0929057A2 EP0929057A2 (en) 1999-07-14
EP0929057A3 true EP0929057A3 (en) 2002-04-17

Family

ID=11961873

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99300129A Withdrawn EP0929057A3 (en) 1998-01-13 1999-01-08 Control system and transmission method

Country Status (2)

Country Link
EP (1) EP0929057A3 (en)
JP (1) JPH11203570A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6915473B2 (en) 2001-05-14 2005-07-05 Interdigital Technology Corporation Method and system for implicit user equipment identification
JP5000401B2 (en) * 2007-07-02 2012-08-15 能美防災株式会社 Distributed fire alarm system
JP5164059B2 (en) * 2007-10-03 2013-03-13 能美防災株式会社 Distributed fire alarm system
GB2506117B (en) 2012-09-19 2014-08-06 Apollo Fire Detectors Ltd Wired data communications network
JP7638090B2 (en) * 2020-12-15 2025-03-03 ニッタン株式会社 Fire alarm system and communication method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984004636A1 (en) * 1983-05-06 1984-11-22 Millicom Inc Message communication system with message storage
EP0304733A1 (en) * 1987-08-14 1989-03-01 Siemens Aktiengesellschaft Data-transmission method
US5699038A (en) * 1993-07-12 1997-12-16 Hill-Rom, Inc. Bed status information system for hospital beds

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984004636A1 (en) * 1983-05-06 1984-11-22 Millicom Inc Message communication system with message storage
EP0304733A1 (en) * 1987-08-14 1989-03-01 Siemens Aktiengesellschaft Data-transmission method
US5699038A (en) * 1993-07-12 1997-12-16 Hill-Rom, Inc. Bed status information system for hospital beds

Also Published As

Publication number Publication date
EP0929057A2 (en) 1999-07-14
JPH11203570A (en) 1999-07-30

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