CA1012625A - Alarm system utilizing a bidirectional wired television system - Google Patents

Alarm system utilizing a bidirectional wired television system

Info

Publication number
CA1012625A
CA1012625A CA187,745A CA187745A CA1012625A CA 1012625 A CA1012625 A CA 1012625A CA 187745 A CA187745 A CA 187745A CA 1012625 A CA1012625 A CA 1012625A
Authority
CA
Canada
Prior art keywords
wired television
bidirectional wired
utilizing
alarm system
alarm
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
CA187,745A
Other languages
English (en)
Other versions
CA187745S (en
Inventor
Takeshi Takeuchi
Hajime Masuda
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.)
Hochiki Corp
Original Assignee
Hochiki 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 Hochiki Corp filed Critical Hochiki Corp
Application granted granted Critical
Publication of CA1012625A publication Critical patent/CA1012625A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • 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
    • G08B25/08—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 communication transmission lines
    • G08B25/085—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 communication transmission lines using central distribution transmission lines

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Alarm Systems (AREA)
  • Fire Alarms (AREA)
CA187,745A 1972-12-22 1973-12-10 Alarm system utilizing a bidirectional wired television system Expired CA1012625A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1972146584U JPS523955Y2 (fr) 1972-12-22 1972-12-22

Publications (1)

Publication Number Publication Date
CA1012625A true CA1012625A (en) 1977-06-21

Family

ID=15410996

Family Applications (1)

Application Number Title Priority Date Filing Date
CA187,745A Expired CA1012625A (en) 1972-12-22 1973-12-10 Alarm system utilizing a bidirectional wired television system

Country Status (6)

Country Link
US (1) US3996578A (fr)
JP (1) JPS523955Y2 (fr)
CA (1) CA1012625A (fr)
CH (1) CH569336A5 (fr)
FR (1) FR2211702B1 (fr)
GB (1) GB1432857A (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5266397A (en) * 1975-11-29 1977-06-01 Maspro Denko Kk Communication system
GB1526027A (en) * 1976-03-30 1978-09-27 Hochiki Co Subscription alarm system
JPS5333015A (en) * 1976-09-08 1978-03-28 Hochiki Co Twooways wire television set
JPS53136500A (en) * 1977-05-02 1978-11-29 Hochiki Co Alarm system
JPS53149799A (en) * 1977-05-31 1978-12-27 Hochiki Co Alarm employing television party reception equipment
US4114150A (en) * 1977-09-13 1978-09-12 Hochiki Corporation Alarm system
US4168494A (en) * 1977-09-15 1979-09-18 Dickey-John Corporation Livestock confinement structure monitor
US4476488A (en) * 1983-03-23 1984-10-09 Zenith Electronics Corporation Control circuit for CATV alert system
US4494138A (en) * 1983-05-11 1985-01-15 Comsonics, Inc. Segmented upstream management for cable television
US4524243A (en) * 1983-07-07 1985-06-18 Lifeline Systems, Inc. Personal alarm system
US4574305A (en) * 1983-08-11 1986-03-04 Tocum, Incorporated Remote hub television and security systems
GB9201996D0 (en) * 1992-01-30 1992-03-18 Millicom Satellite Tv Services Communication systems
US5493328A (en) * 1993-04-09 1996-02-20 Alcatel Network Systems, Inc. Method and system for addressing a home terminal unit using a fiber-to-the-curb system
FR2878061B1 (fr) * 2004-11-16 2007-02-02 Domfort Soc Par Actions Simpli Systeme et procede de videosurveillance, centrale et terminal, adaptes pour ce systeme

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3054858A (en) * 1959-05-12 1962-09-18 Ar & T Electronics Inc Signal distribution arrangement for closed-circuit communications systems
US3534161A (en) * 1966-01-24 1970-10-13 Gordon A Friesen Intern Inc Television communication systems
US3668307A (en) * 1970-03-30 1972-06-06 Kms Ind Inc Two-way community antenna television system
US3803491A (en) * 1971-05-26 1974-04-09 Tocom Communications system
US3761914A (en) * 1972-03-10 1973-09-25 Bell Television Inc Alarm system

Also Published As

Publication number Publication date
JPS523955Y2 (fr) 1977-01-27
DE2362327A1 (de) 1974-07-04
US3996578A (en) 1976-12-07
CH569336A5 (fr) 1975-11-14
FR2211702B1 (fr) 1976-11-19
GB1432857A (en) 1976-04-22
JPS49101622U (fr) 1974-09-02
DE2362327B2 (de) 1975-08-21
FR2211702A1 (fr) 1974-07-19

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Legal Events

Date Code Title Description
MKEX Expiry

Effective date: 19940621