GB1422130A - Installation for transmitting signals within a building - Google Patents
Installation for transmitting signals within a buildingInfo
- 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
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)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (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).
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)
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)
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 |
-
1972
- 1972-12-22 IT IT7106272A patent/IT976190B/en active
- 1972-12-27 NL NL7217676A patent/NL7217676A/xx unknown
- 1972-12-29 GB GB6011472A patent/GB1422130A/en not_active Expired
- 1972-12-29 FR FR7247043A patent/FR2167183A5/fr not_active Expired
Cited By (3)
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 |
---|---|
NL7217676A (en) | 1973-07-03 |
IT976190B (en) | 1974-08-20 |
FR2167183A5 (en) | 1973-08-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES377062A1 (en) | Equipment to coordinate establishment of audio and video connections through switching systems | |
GB1470409A (en) | Control apparatus for a two-way cable television system | |
GB1342781A (en) | Communication systems | |
GB1477736A (en) | Ringer blocking circuit for telephones | |
US3999006A (en) | Visitor confirmation system | |
US5870453A (en) | Automatic control system for a remotely controllable sound producing device | |
GB1422130A (en) | Installation for transmitting signals within a building | |
FI86937C (en) | TELEFONSYSTEM | |
FR2276755A1 (en) | Interphone network using two wire lines - has keyboards and memories with ultrasonic signalling and logic control | |
NO961857L (en) | Hustelefonkommunikasjonsanlegg | |
GB1117292A (en) | Supervisory apparatus for telecommunication systems | |
ES450594A1 (en) | Direct station selection circuit | |
JPS6182565A (en) | Home control device for grouped dwelling house | |
FR2411527A1 (en) | TV receiver for normal and coded transmissions - has external decoder between audio and video demodulators and output amplifiers | |
JPH0683452B2 (en) | Multiplexing method for TV intercoms for apartments | |
JPS6065653A (en) | Broadcast equipment | |
JPS62147855A (en) | Telephone switch | |
SU1386051A3 (en) | Automatic intercommunication system | |
FR2320670A1 (en) | Information system for videophone network - automatically stores information transmitted to unattended installation for reconstitution later | |
SE7509044L (en) | DATA COMMUNICATION SYSTEM | |
WO1996037993A1 (en) | Automatic control system for a remotely controllable sound producing device | |
JPS5912852Y2 (en) | alarm device | |
JPS5888957A (en) | Interphone set | |
JPH0828780B2 (en) | Apartment housing communication device | |
KR920014114A (en) | Analog trunking and premises broadcasting simultaneous reception circuit in electronic switchboard |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |