CA2131905A1 - Systeme telephonique de surveillance - Google Patents

Systeme telephonique de surveillance

Info

Publication number
CA2131905A1
CA2131905A1 CA 2131905 CA2131905A CA2131905A1 CA 2131905 A1 CA2131905 A1 CA 2131905A1 CA 2131905 CA2131905 CA 2131905 CA 2131905 A CA2131905 A CA 2131905A CA 2131905 A1 CA2131905 A1 CA 2131905A1
Authority
CA
Canada
Prior art keywords
unit
monitoring
code
transmitting
units
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.)
Abandoned
Application number
CA 2131905
Other languages
English (en)
Inventor
Jorma Romunen
Matti Kangas
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.)
FONEL Oy
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2131905A1 publication Critical patent/CA2131905A1/fr
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/06—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using power transmission lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0291—Door telephones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable
    • H04N7/106—Adaptations for transmission by electrical cable for domestic distribution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable
    • H04N7/108—Adaptations for transmission by electrical cable the cable being constituted by a pair of wires
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
    • H04N7/186—Video door telephones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5429—Applications for powerline communications
    • H04B2203/5441—Wireless systems or telephone

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
CA 2131905 1992-03-13 1993-03-15 Systeme telephonique de surveillance Abandoned CA2131905A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI921098A FI921098A (fi) 1992-03-13 1992-03-13 Oevervakningstelefonsystem
FI921098 1992-03-13

Publications (1)

Publication Number Publication Date
CA2131905A1 true CA2131905A1 (fr) 1993-09-16

Family

ID=8534921

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2131905 Abandoned CA2131905A1 (fr) 1992-03-13 1993-03-15 Systeme telephonique de surveillance

Country Status (3)

Country Link
CA (1) CA2131905A1 (fr)
FI (1) FI921098A (fr)
WO (1) WO1993018594A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1275229B (it) * 1995-02-09 1997-07-31 Bticino Spa Videocitofono che consente la selezione di porzioni del campo di ripresa la loro memorizzazione ed il loro ingrandimento
ES2122849B1 (es) * 1995-03-03 1999-10-01 Fernandez Minaya Miguel Angel Mirilla electronica para puerta de acceso a vivienda y visionado en televisor domestico.
CN1045239C (zh) * 1996-03-30 1999-09-22 重庆今诚科技开发有限公司 电力相间载波广播方法
DE19738784C2 (de) * 1997-09-04 1999-07-01 Loh Kg Ritto Werk Anlage mit einer Türstation und mehreren Wohnungsstationen, die über eine Bus-Zweidrahtleitung miteinander verbunden sind
JP2000332908A (ja) * 1999-05-17 2000-11-30 Kyocera Corp 携帯テレビ電話端末
RS54947B1 (sr) 2013-02-06 2016-11-30 Comau Spa Kolica za prenos kontejnera za delove ili komponente u industrijskom postrojenju

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3093706A (en) * 1958-02-25 1963-06-11 Electronic Measurement Systems Television system
GB8606881D0 (en) * 1986-03-20 1986-04-23 Musical Electronics Ltd Video distribution system
US4912553A (en) * 1986-03-28 1990-03-27 Pal Theodore L Wideband video system for single power line communications
FR2634338A1 (fr) * 1988-07-18 1990-01-19 Milly Lucien Procedes et materiels, a la fois perfectionnes, simplifies et economiques de television dite " par cables "
WO1990004306A1 (fr) * 1988-10-13 1990-04-19 International Media Communications Plc Transmission de signaux

Also Published As

Publication number Publication date
FI921098A0 (fi) 1992-03-13
WO1993018594A1 (fr) 1993-09-16
FI921098A (fi) 1993-09-14

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Legal Events

Date Code Title Description
FZDE Dead