GB1422130A - Installation for transmitting signals within a building - Google Patents

Installation for transmitting signals within a building

Info

Publication number
GB1422130A
GB1422130A GB6011472A GB6011472A GB1422130A GB 1422130 A GB1422130 A GB 1422130A GB 6011472 A GB6011472 A GB 6011472A GB 6011472 A GB6011472 A GB 6011472A GB 1422130 A GB1422130 A GB 1422130A
Authority
GB
United Kingdom
Prior art keywords
line
central unit
apartment
gate
earth potential
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
GB6011472A
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.)
Kathrein SE
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/en
Application filed by Kathrein Werke KG filed Critical Kathrein Werke KG
Publication of GB1422130A publication Critical patent/GB1422130A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—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)

Abstract

1422130 Selective signalling A KATHREIN JNR [trading as KATHREIN-WERKE KG] 29 Dec 1972 31 Dec 1971 25 July 1972] 60114/72 Heading G4H [Also in Division H4] Communication between apartments of a building and a central unit is via a line system having an unvarying number of conductors and is such that a binary coded D.C. signal from the central unit to ring a bell in an apartment is also operative to connect a loud-speaker in the apartment to the central unit thereby preventing eavesdropping, the line system also connecting an antenna at least to the apartments. Each apartment has a control/display panel, Figs. 2, 14, providing audio and video communication with a main gate over lines 12, 13, and includes an encoder/decoder 20 unique to that address. Communal radio/TV programmes are distributed over coax 10 and power over line 11. Alternatively, the communal and door TV signals may share the same coax or all signals may be multiplexed on to a single coax, the central unit and apartments having suitable separating filters, Operation of a call-button at the main gate is binary coded and transmitted over signal lines 12 to terminals 121-126 of each apartment. The decoder 222 of the called apartment applies earth potential to point 223 and positive potential to point 241 to energize Darlington pair 230, 231 and fire thyristor 233 which allows passage of A.C. current over line C to ring bell 234, at the same time causing thyristor 237 to conduct and connect microphone 239 and loudspeaker 238 to earth line A. A central thirtysecond timer (Fig. 13e, not shown) also responds to the code and applies a disabling signal to an AND gate (201). If the called party is absent, the timer runs down and enables the AND gate to interrupt feed current from the central station to the door extension and thereby disables the interconnection until the call-button is depressed again. If the called party goes offhook 240 current over line D1 is sensed in a threshold circuit (192, 194, Fig. 13d, not shown) to apply earth potential to a speech amplifier (195) and to the AND gate (206) preventing disconnection as long as the switch 240 is closed, even after the timer runs down. The called party may then operate switch 245 to connect earth potential to line 121 which is decoded at the central unit to operate the door opener. Similarly, operation of switch 250 applies earth potential to line 122 to sound a general alarm 28, Fig. 2. The central unit has plug-in boards for the different functions including a test board (not detailed).
GB6011472A 1971-12-31 1972-12-29 Installation for transmitting signals within a building Expired GB1422130A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2165904 1971-12-31
DE19722236431 DE2236431A1 (en) 1972-07-25 1972-07-25 SYSTEM FOR MULTIPLE USE OF SIGNAL LINES IN BUILDINGS

Publications (1)

Publication Number Publication Date
GB1422130A true GB1422130A (en) 1976-01-21

Family

ID=25762266

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6011472A Expired GB1422130A (en) 1971-12-31 1972-12-29 Installation for transmitting signals within a building

Country Status (4)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123193A (en) * 1982-06-19 1984-01-25 James Ernest Gleave Public address system
GB2239581A (en) * 1989-12-28 1991-07-03 Gold Star Co Door phone transmits image, voice, sync and power down same line
ES2245192A1 (en) * 2003-08-08 2005-12-16 Raul Gonzalez Martinez Automatic doorman installation has control module to enable bidirectional communication with programmed telephone number when intrusion is detected

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123193A (en) * 1982-06-19 1984-01-25 James Ernest Gleave Public address system
GB2239581A (en) * 1989-12-28 1991-07-03 Gold Star Co Door phone transmits image, voice, sync and power down same line
ES2245192A1 (en) * 2003-08-08 2005-12-16 Raul Gonzalez Martinez Automatic doorman installation has control module to enable bidirectional communication with programmed telephone number when intrusion is detected

Also Published As

Publication number Publication date
IT976190B (en) 1974-08-20
NL7217676A (en) 1973-07-03
FR2167183A5 (en) 1973-08-17

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees