IT996665B - IMPROVEMENTS FOR ELECTRONIC DOORS FOR BUILDINGS - Google Patents

IMPROVEMENTS FOR ELECTRONIC DOORS FOR BUILDINGS

Info

Publication number
IT996665B
IT996665B IT6967273A IT6967273A IT996665B IT 996665 B IT996665 B IT 996665B IT 6967273 A IT6967273 A IT 6967273A IT 6967273 A IT6967273 A IT 6967273A IT 996665 B IT996665 B IT 996665B
Authority
IT
Italy
Prior art keywords
buildings
electronic doors
doors
electronic
Prior art date
Application number
IT6967273A
Other languages
Italian (it)
Inventor
Etiennette In Desanti Romani
Original Assignee
Etiennette In Desanti Romani
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 Etiennette In Desanti Romani filed Critical Etiennette In Desanti Romani
Application granted granted Critical
Publication of IT996665B publication Critical patent/IT996665B/en

Links

Classifications

    • 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
    • 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
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
IT6967273A 1972-09-08 1973-09-07 IMPROVEMENTS FOR ELECTRONIC DOORS FOR BUILDINGS IT996665B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7231853A FR2199149B1 (en) 1972-09-08 1972-09-08

Publications (1)

Publication Number Publication Date
IT996665B true IT996665B (en) 1975-12-10

Family

ID=9104010

Family Applications (1)

Application Number Title Priority Date Filing Date
IT6967273A IT996665B (en) 1972-09-08 1973-09-07 IMPROVEMENTS FOR ELECTRONIC DOORS FOR BUILDINGS

Country Status (4)

Country Link
DE (1) DE2341304A1 (en)
FR (1) FR2199149B1 (en)
GB (1) GB1412806A (en)
IT (1) IT996665B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2593339A1 (en) * 1986-01-23 1987-07-24 Darbonne Herve Installation for remotely controlling the door of an apartment building by radio waves
FR2610434A1 (en) * 1987-01-29 1988-08-05 Mirica Gheorghe Concealing electronic doorway
FR2612671A1 (en) * 1987-03-18 1988-09-23 Lorenzelli Marcel Door phone video system using a single coaxial cable for transmitting information, a standard, unmodified television receiver, and wireless remote control
GB9201996D0 (en) * 1992-01-30 1992-03-18 Millicom Satellite Tv Services Communication systems
DE19529039C2 (en) * 1995-08-08 1999-06-10 Juergen Blask Front door security and opening system in the door plate

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3423521A (en) * 1966-01-24 1969-01-21 Gordon A Friesen Associates In Television system having common transmission line for power,video signals,and command signals

Also Published As

Publication number Publication date
GB1412806A (en) 1975-11-05
DE2341304A1 (en) 1974-03-21
FR2199149B1 (en) 1976-05-21
FR2199149A1 (en) 1974-04-05

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