IT976190B - Sistema per la trasmissione di segnali su linee di segnalazione impiantate negli edifici - Google Patents

Sistema per la trasmissione di segnali su linee di segnalazione impiantate negli edifici

Info

Publication number
IT976190B
IT976190B IT7106272A IT7106272A IT976190B IT 976190 B IT976190 B IT 976190B IT 7106272 A IT7106272 A IT 7106272A IT 7106272 A IT7106272 A IT 7106272A IT 976190 B IT976190 B IT 976190B
Authority
IT
Italy
Prior art keywords
buildings
signals
transmission
signaling lines
lines installed
Prior art date
Application number
IT7106272A
Other languages
English (en)
Italian (it)
Original Assignee
Kathrein Werke Kg
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
Priority claimed from DE19722236431 external-priority patent/DE2236431A1/de
Application filed by Kathrein Werke Kg filed Critical Kathrein Werke Kg
Application granted granted Critical
Publication of IT976190B publication Critical patent/IT976190B/it

Links

Classifications

    • 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B1/00—Systems for signalling characterised solely by the form of transmission of the signal
    • G08B1/08—Systems for signalling characterised solely by the form of transmission of the signal using electric transmission ; transformation of alarm signals to electrical signals from a different medium, e.g. transmission of an electric alarm signal upon detection of an audible alarm signal
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • G08B3/1008—Personal calling arrangements or devices, i.e. paging systems
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/44—Arrangements for feeding power to a repeater along the transmission line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/02—Telephonic communication systems specially adapted for combination with other electrical systems with bell or annunciator systems
    • H04M11/022—Paging systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/02—Telephonic communication systems specially adapted for combination with other electrical systems with bell or annunciator systems
    • H04M11/025—Door telephones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/001—Two-way communication systems between a limited number of parties

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Theoretical Computer Science (AREA)
  • Electromagnetism (AREA)
  • Multimedia (AREA)
  • Alarm Systems (AREA)
IT7106272A 1971-12-31 1972-12-22 Sistema per la trasmissione di segnali su linee di segnalazione impiantate negli edifici IT976190B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2165904 1971-12-31
DE19722236431 DE2236431A1 (de) 1972-07-25 1972-07-25 Anlage zur mehrfachausnutzung von signalleitungen in gebaeuden

Publications (1)

Publication Number Publication Date
IT976190B true IT976190B (it) 1974-08-20

Family

ID=25762266

Family Applications (1)

Application Number Title Priority Date Filing Date
IT7106272A IT976190B (it) 1971-12-31 1972-12-22 Sistema per la trasmissione di segnali su linee di segnalazione impiantate negli edifici

Country Status (4)

Country Link
FR (1) FR2167183A5 (fr)
GB (1) GB1422130A (fr)
IT (1) IT976190B (fr)
NL (1) NL7217676A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123193B (en) * 1982-06-19 1985-12-11 James Ernest Gleave Public address system
FR2612671A1 (fr) * 1987-03-18 1988-09-23 Lorenzelli Marcel Systeme video portier phonique utilisant un seul cable coaxial pour la transmission des informations, et un recepteur de television standard sans modification, et une telecommande sans fil
KR940000250B1 (ko) * 1989-12-28 1994-01-12 주식회사 금성사 도어폰의 신호 전송장치
ES2245192B1 (es) * 2003-08-08 2007-02-16 Raul Gonzalez Martinez Instalacion de portero automatico con acceso bidireccional a linea telefonica.

Also Published As

Publication number Publication date
NL7217676A (fr) 1973-07-03
GB1422130A (en) 1976-01-21
FR2167183A5 (fr) 1973-08-17

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