CH580312A5 - Alarm circuit for communal TV antenna - is responsive to alarm signal frequency characterising specific television subscriber - Google Patents

Alarm circuit for communal TV antenna - is responsive to alarm signal frequency characterising specific television subscriber

Info

Publication number
CH580312A5
CH580312A5 CH1608073A CH1608073A CH580312A5 CH 580312 A5 CH580312 A5 CH 580312A5 CH 1608073 A CH1608073 A CH 1608073A CH 1608073 A CH1608073 A CH 1608073A CH 580312 A5 CH580312 A5 CH 580312A5
Authority
CH
Switzerland
Prior art keywords
alarm signal
alarm
signal
television
antenna
Prior art date
Application number
CH1608073A
Other languages
German (de)
English (en)
Original Assignee
Hochiki Co
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 Co filed Critical Hochiki Co
Publication of CH580312A5 publication Critical patent/CH580312A5/de

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B27/00—Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations
    • G08B27/008—Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations with transmission via TV or radio broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
  • Emergency Alarm Devices (AREA)
  • Closed-Circuit Television Systems (AREA)
CH1608073A 1972-11-15 1973-11-15 Alarm circuit for communal TV antenna - is responsive to alarm signal frequency characterising specific television subscriber CH580312A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13073172U JPS577108Y2 (enrdf_load_stackoverflow) 1972-11-15 1972-11-15

Publications (1)

Publication Number Publication Date
CH580312A5 true CH580312A5 (en) 1976-09-30

Family

ID=15041271

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1608073A CH580312A5 (en) 1972-11-15 1973-11-15 Alarm circuit for communal TV antenna - is responsive to alarm signal frequency characterising specific television subscriber

Country Status (2)

Country Link
JP (1) JPS577108Y2 (enrdf_load_stackoverflow)
CH (1) CH580312A5 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5124899A (ja) * 1974-08-23 1976-02-28 Hochiki Co Keihohoshiki

Also Published As

Publication number Publication date
JPS577108Y2 (enrdf_load_stackoverflow) 1982-02-10
JPS4985979U (enrdf_load_stackoverflow) 1974-07-25

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Legal Events

Date Code Title Description
PL Patent ceased
PL Patent ceased