DE218098C - - Google Patents
Info
- Publication number
- DE218098C DE218098C DENDAT218098D DE218098DA DE218098C DE 218098 C DE218098 C DE 218098C DE NDAT218098 D DENDAT218098 D DE NDAT218098D DE 218098D A DE218098D A DE 218098DA DE 218098 C DE218098 C DE 218098C
- Authority
- DE
- Germany
- Prior art keywords
- waves
- relays
- relay
- contacts
- receiver
- 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.)
- Active
Links
- 230000000875 corresponding Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 230000000903 blocking Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/022—Selective call receivers
- H04W88/025—Selective call decoders
- H04W88/027—Selective call decoders using frequency address codes
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- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C23/00—Clocks with attached or built-in means operating any device at preselected times or after preselected time-intervals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radio Relay Systems (AREA)
Description
vt'V bet,vt'V bet,
Ja I'lmιI'ainIi.Yes I'lmιI'ainIi.
(SmCj(J^iiat bet tSa-iivmCuiin(SmCj (J ^ iiat bet tSa-iivmCuiin
KAISERLICHES A IMPERIAL A
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
- JVI 218098 -KLASSE 21«. GRUPPE - JVI 218098 - CLASS 21 «. GROUP
ALF SINDING-LARSEN in CHRISTIANIA.ALF SINDING-LARSEN in CHRISTIANIA.
eines bestimmten Empfängers.of a specific recipient.
Patentiert im Deutschen Reiche vom 6. November 1907 ab.Patented in the German Empire on November 6, 1907.
Es ist oft von großer Bedeutung, z. B. beim drahtlosen Telegraphieren zwischen mehreren Stationen bzw. zwischen Gruppen von Absender- und Gruppen von Empfängerapparaten, Zeichen auswechseln zu können, ohne daß diese Zeichenauswechselungen gegenseitig aufeinander störend einwirken.It is often of great importance, e.g. B. when wireless telegraphing between several Stations or between groups of senders and groups of receivers, To be able to interchange characters without these interchanges of characters interfere with each other.
Die Weise, in welcher dieses Problem gewöhnlich zu lösen versucht wird, ist bekanntlieh die durch die sogenannte abgestimmte Telegraphie, d. h. durch Abstimmung der von korrespondierenden Apparaten verwendeten Wellen auf eine bestimmte Wellenlänge.The manner in which this problem is usually attempted to be solved is well known the so-called coordinated telegraphy, d. H. by voting the by Corresponding apparatus used waves at a certain wavelength.
Leider ist diese Abstimmung schwer exakt zu erreichen, und noch schwieriger ist es, die Empfangsapparate in einer solchen Weise der Abstimmung einzustellen, daß sie nur auf Schwingungen von genau bestimmten Wellenlängen ansprechen.Unfortunately, this coordination is difficult to achieve precisely, and it is even more difficult to achieve that Set receiving sets in such a way of voting that they are only on Address vibrations of precisely defined wavelengths.
Man hat zur Lösung desselben Problems auch die Benutzung von Sperrelais vorgeschlagen, und zwar in der Weise, daß mehrere Empfänger verschiedener Empfindlichkeit benutzt und auf der Sendestation Wellen verschiedener Intensität ausgestrahlt wurden, je nachdem welcher Empfänger in Tätigkeit gesetzt werden sollte.The use of blocking relays has also been proposed to solve the same problem, in such a way that several receivers of different sensitivities are used and on the broadcasting station waves of different intensities were broadcast, depending after which receiver should be put into action.
Die Schaltung war dann so getroffen, daß jeder Empfänger die folgenden, noch empfind licheren Empfänger abschaltete, nicht dagegen die weniger empfindlichen, da diese ja wegen ihrer geringeren Empfindlichkeit nicht erregt werden. Es ist aber fast noch schwieriger, den Empfängern je eine bestimmte Empfindlichkeit zu geben und die Stärke der Wellen derart genau zu bemessen, daß an der Empfangsstelle mit Sicherheit noch ein bestimmter Empfänger anspricht, der folgende weniger empfindliche dagegen nicht mehr zur Wirkung kommt.The circuit was then designed so that each receiver received the following, even more sensitive ones Receiver switched off, but not the less sensitive ones, as these are because of their lower sensitivity are not excited. But it's almost even more difficult To give the recipients a certain sensitivity and the strength of the waves to be measured so precisely that at the receiving point there is still a certain one The recipient responds, the following less sensitive, however, no longer to the effect comes.
Beim Gegenstand der vorliegenden Erfindung soll daher dasselbe Problem unter Verwendung von auf verschiedene Wellenlängen abgestimmten Empfängern gelöst werden, und zwar zur Vermeidung des oben genannten Übelstandes bei abgestimmten Apparaten unter Verwendung von Sperrelais, und zwar soll die Anordnung so getroffen sein, daß der auf die ankommenden Wellen abgestimmte Empfänger mit Hilfe seines Sperrelais alle anderen Empfänger, also sowohl die mit größerer Wellenlänge als auch die mit kleinerer Wellenlänge ausschaltet. Auf diese Weise ist mit Sicherheit erreicht, daß nur derjenige Apparat, welcher gemeint ist, in Tätigkeit tritt.The object of the present invention is therefore intended to solve the same problem using different wavelengths agreed recipients to avoid the above Deficiency in tuned apparatus using blocking relays, namely the arrangement should be made so that the one tuned to the incoming waves Receiver with the help of its blocking relay all other receivers, so both those with longer wavelength as well as the shorter wavelength turns off. In this way it is achieved with certainty that only the apparatus which is meant is in operation occurs.
Zu diesem Zweck sind z. B. die für die verschiedenen in Anwendung genommenen Abstimmungen gebrauchten Empfänger (z. B. Fritter) parallel geschaltet, und die Relais-Stromkreise sind derart geschaltet, daß diese Ströme Kontakte zu passieren haben, die von der Tätigkeit irgendeines der anderen Relais unterbrochen werden, oder aber daß die von den Relais zu schließenden Arbeitsströme solche Kontakte zu passieren haben. Dadurch wird erreicht, daß Wellen, die mit einem der Abstimmungsorgane speziell in Resonanz,For this purpose z. B. those used for the various Voting used receivers (e.g. fritters) connected in parallel, and the relay circuits are connected in such a way that these currents have to pass through contacts that depend on the operation of any of the other relays be interrupted, or that the working currents to be closed by the relay such contacts have to happen. This ensures that waves with one of the Voting bodies specifically in response,
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE218098C true DE218098C (en) |
Family
ID=479353
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DENDAT218098D Active DE218098C (en) |
Country Status (1)
Country | Link |
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DE (1) | DE218098C (en) |
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- DE DENDAT218098D patent/DE218098C/de active Active
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