DE2445367A1 - Simple transmission line video signal distribution system - consists of single transmitter and several receivers connected by network - Google Patents
Simple transmission line video signal distribution system - consists of single transmitter and several receivers connected by networkInfo
- Publication number
- DE2445367A1 DE2445367A1 DE19742445367 DE2445367A DE2445367A1 DE 2445367 A1 DE2445367 A1 DE 2445367A1 DE 19742445367 DE19742445367 DE 19742445367 DE 2445367 A DE2445367 A DE 2445367A DE 2445367 A1 DE2445367 A1 DE 2445367A1
- Authority
- DE
- Germany
- Prior art keywords
- cable system
- television
- television cable
- people
- signals
- 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.)
- Withdrawn
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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
Abstract
Description
Fernsehkabelsystem zur t!bertragung von Fernschsignalen Die Erfindung betrifft ein Fernsehkabelsystem zur tibertragung von Fernsehsignalen. Derartige Kabelsysteme sind allgemein bekannt.Television cable system for the transmission of television signals. The invention relates to a television cable system for the transmission of television signals. Such Cable systems are well known.
Andererseits sind in der Praxis zahlreiche Arten von Anrufsystemen zum Anrufen von Personen bekannt, bei denen die Melde- und Inforiationsaignale entweder drahtlos oder über ein Kabelverteilungsnetz zu der den betreffenden Personen gehörenden Empfangseinrichtung übertragen werden. Die Einrichtung eines derartigen getrennten Kabelverteilungsnetzes ist Jedoch häufig sehr kostspielig.On the other hand, there are many types of calling systems in practice known for calling people, for whom the reporting and information campaigns either wirelessly or via a cable distribution network to the person in question Receiving device are transmitted. The establishment of such a separate However, the cable distribution network is often very expensive.
Ziel der Erfindung ist es, diesen Nachteil zu beseitigen.The aim of the invention is to eliminate this disadvantage.
Zu dieser Zweck ist ein Fernsehkabelsystem der eingangs genanntes Art erfindungsgemäß gekennzeichnet durch eine Sendeeinrichtung und eine Empfangseinrichtung zum Anrufen von Personen oder Personengruppen, wobei die von der Sende einrichtung gesendeten Signale über das Fernsehkabelsystem zu einer oder mehreren Empianggseinrichtungen übertragen werden.To this end, a television cable system is that mentioned in the opening paragraph Type according to the invention characterized by a transmitting device and a receiving device for calling people or groups of people, whereby the transmission facility signals sent over the television cable system to one or more reception facilities be transmitted.
Bei einer bevorzugten Ausführungsform des erfindungs gemäßen Fernuebkabelsysteis sendet die Sendeeinrichtung für das Anrufen von Personen in einem Kode modulierte Signale in dem Bereich von 40 bis 300 MHz, wodurch Teilnehmer oder Teilnehmergruppen über Xrägerwellenfrequenz angerufen werden können.In a preferred embodiment of the fiction, contemporary remote cable system sends the transmission device for calling people modulated in a code Signals in the range from 40 to 300 MHz, creating subscribers or groups of subscribers can be called via Xcarrier wave frequency.
Bei einer weiteren, zweckmäßigen Ausführungsform der Erwindung ist die Empfangseinrichtung zum Anrufen von Personen bei einem Fernsehkabelsystem, das mit einem oder mehreren Wandlern zum Umsetzen von über das Fernsehkabelsystem geführten Fernsehsignalen in für Fernsehempfänger in einen geeigneten Frequenzbereich gelegene Signale versehen ist, diesem Wandler bzw. diesen Wandlern eingegliedert.In a further, expedient embodiment of the invention is the receiving means for calling people on a television cable system that with one or more converters for converting from over the television cable system Television signals in a suitable frequency range for television receivers Signals is provided, incorporated into this converter or these converters.
Bei einer anderen zweckmäßigen Ausführungsform des erfindungsgemäßen Fernsehkabelsystems können ein oder mehrere Wandler auf einen oder mehrere nicht für andere Teilnehmer bestimmte Frequenzkanäle abgestimmt werden, in denen zusammen mit dem Melde signal Video- und/oder Schallin;toriationen übertragen werden.In another advantageous embodiment of the invention Cable television systems can have one or more converters to one or more not for other participants certain frequency channels are tuned in which together video and / or sound information can be transmitted with the reporting signal.
Bei einer anderen zweckmäßigen Ausführungsform enthält die Eepfantseinrichtung eine Hilfsspannungsquelle (Akkumulator), die gewährleistet, daß auch nach Ausfallen der Netzspannung der Anruf noch während mindestens 24 Stunden empfangen wird.In another expedient embodiment, the Eepfantseinrichtung contains an auxiliary voltage source (accumulator), which ensures that even after failure the Line voltage the call is received for at least 24 hours.
Bei einer weiteren zweckmäßigen Ausführungsform besteht das Anrufsignal aus einem Schallsignal sowie aus der Anzeige eine Drehspul-Anzeigegeräts mit einem Transistor-Haltekreis, das, bis der Angerufene den Transistor-Haltekreis mit einem Druckknopfschalter zurückstellt, angibt, daß ein Abruf stattgefunden hat.In a further expedient embodiment, there is the call signal from a sound signal as well as from the display a moving coil display device with a Transistor hold circuit that, until the callee uses the transistor hold circuit with a Push-button switch resets, indicating that a poll has occurred.
Ein Drehspul-Anzeigegerät wirb aufgrund der geringen Stromaufnahme aus der Hilfsspannungsquelle benutzt.A moving coil display device advertises due to the low power consumption used from the auxiliary voltage source.
Der Haltekreis ist so dimensioniert, daß kein Strom aus der Spannungsquelle bzw. der Hilfsspannungsquelle aufgenormen wird, wenn kein Abruf stattgefunden hat.The holding circuit is dimensioned so that there is no current from the voltage source or the auxiliary voltage source is raised if no request has taken place.
Die Figur zeigt das Schaltbild eines Fernsehkabelsystems, an dessen vorderen Teil die Sendeeinrichtung 1 zum Anrufen von Personen angeschlossen ist. Außer den Pernsehsignalen werden die von der Sendeeinrichtung 1 konenden Melde- und Informationssignale über das Kabelnetz zu den einzelnen Wandlern 3 übertragen, denen die Empfangseinrichtungen 2 für das Anrufen von Personen eingegliedert sind.The figure shows the circuit diagram of a television cable system on which the front part of the transmitting device 1 for calling people is connected. In addition to the television signals, the message signals sent by the transmitter 1 are and transmit information signals via the cable network to the individual transducers 3, which the receiving devices 2 for calling people are incorporated.
Claims (7)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE135982A BE805241A (en) | 1973-09-24 | 1973-09-24 | TV-KABELSTELSEL VOOR HET OVERDRAGEN VAN TV-SIGNALEN |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2445367A1 true DE2445367A1 (en) | 1975-04-03 |
Family
ID=3842246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19742445367 Withdrawn DE2445367A1 (en) | 1973-09-24 | 1974-09-23 | Simple transmission line video signal distribution system - consists of single transmitter and several receivers connected by network |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE805241A (en) |
DE (1) | DE2445367A1 (en) |
NL (1) | NL7412267A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3315784A1 (en) * | 1983-04-30 | 1984-10-31 | Michael 3302 Cremlingen Zadow | Monitoring system for a building |
FR2632753A1 (en) * | 1988-06-13 | 1989-12-15 | Mumbach Pierre | Automatic device for warning of a data message |
-
1973
- 1973-09-24 BE BE135982A patent/BE805241A/en unknown
-
1974
- 1974-09-16 NL NL7412267A patent/NL7412267A/en not_active Application Discontinuation
- 1974-09-23 DE DE19742445367 patent/DE2445367A1/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3315784A1 (en) * | 1983-04-30 | 1984-10-31 | Michael 3302 Cremlingen Zadow | Monitoring system for a building |
FR2632753A1 (en) * | 1988-06-13 | 1989-12-15 | Mumbach Pierre | Automatic device for warning of a data message |
Also Published As
Publication number | Publication date |
---|---|
BE805241A (en) | 1974-01-16 |
NL7412267A (en) | 1975-03-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |