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WO2001063787A1 - External modem - Google Patents

External modem Download PDF

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Publication number
WO2001063787A1
WO2001063787A1 PCT/DE2001/000682 DE0100682W WO0163787A1 WO 2001063787 A1 WO2001063787 A1 WO 2001063787A1 DE 0100682 W DE0100682 W DE 0100682W WO 0163787 A1 WO0163787 A1 WO 0163787A1
Authority
WO
WIPO (PCT)
Prior art keywords
modem
data
energy supply
connection
network
Prior art date
Application number
PCT/DE2001/000682
Other languages
German (de)
French (fr)
Inventor
Kurt Aretz
Ralf Kern
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to EP01913710A priority Critical patent/EP1258089A1/en
Publication of WO2001063787A1 publication Critical patent/WO2001063787A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5429—Applications for powerline communications
    • H04B2203/5454—Adapter and plugs

Definitions

  • the invention relates to an external modem according to the preamble of claim 1.
  • connection lines When using current external modems, e.g. of an analog modem for connection to a telephone line, up to three connection lines are used: one for
  • Power supply one to the personal computer (PC) as a data processing device and one to the telephone socket.
  • the connection line to the PC or the telephone socket is usually still quite long if the PC is not located in the immediate vicinity of the telephone socket.
  • this connection line can either be permanently installed or can only be designed as required.
  • the object of the invention is to provide technical measures based on external modems of the type mentioned at the outset by which the use of external modems is considerably simplified.
  • the external modem in addition to the components forming the standard modem, for a data connection to e for Data transfer specialized data grid, a power line communication modem visual components for connection to em on the power supply for electrical equipment spezia ⁇ ized power grid on.
  • the advantage is that for a data connection between a data processing device, for example a PC, and the external modem, which is connected to the data network specializing in data transmission, there is no longer a need for a permanently installed or, if necessary, configured connection line, because instead the line is already tidily installed lines of the energy supply network specializing in the energy supply of electrical devices can be used, with which the individual devices are to be connected anyway because of the energy supply. An otherwise possible "cable clutter" is prevented. Subsequent installation measures are saved. The overall system is clear.
  • the distance between the data processing device and the external modem is not critical. Any suitable socket can be used regardless of the distance. Components such as Storage units, digital signal processors and power supply elements are provided only once and can then be used by all components of the external modem.
  • the external modem then has a power plug integrated in the housing, so that an independent connection line to the power supply network can also be dispensed with. All that remains then is the connection line from the external modem to the telephone socket, for example, which can be relatively short because a socket in the power supply network can be used.
  • the external modem also has one socket integrated in the housing, a socket of the power supply network, which the external modem is plugged in, is not blocked by a further electrical device for connection to the power supply network.
  • FIG. 1 shows a basic circuit of a modem according to the invention
  • Figure 2 em exemplary embodiment of a modem according to the figure 1 m Prmzipdar ein.
  • the modem M u shown in FIG. 1 comprises a standard modem SM and a powerline communication modem PLC-M in a single housing.
  • the standard modem SM has a first interface SI for establishing a connection to a data network DN specialized in data transmission.
  • the Powerline Communication Modem PLC-M has a second interface S2 for establishing a connection to an energy supply network EN specialized for the energy supply of electrical devices.
  • the modem M is supplied with electrical energy by connecting the modem M to the energy supply network EN.
  • the modem M is enabled by the integrated Powerline Communication Modem PLC-M m to connect electronically represented data for data transmission via the energy supply network EN to the energy supply network EN.
  • the modem M is further able to fill out data transmitted on the energy supply network EN by the Powerline Communication Modem PLC-M.
  • Both the standard modem SM and the powerline communication modem PLC-M have an internal data connection in such a way that between the standard modem SM and the Powerline Communication Modem PLC-M data can be exchanged back and forth.
  • the specialized data network can be, for example, the analog telephone line with the a / b wires contained therein. It can also be an ISDN or xDSL line. For example, the (TV) cable that is used as a television connection is also possible.
  • FIG. 2 shows an embodiment of the modem M according to FIG. 1. It includes a housing that has an integrated plug ST on one side for connection to the power supply network EN and an integrated socket on the opposite side. FIG. 2 does not explicitly show that the connector ST and the
  • Socket STD have a direct electrical connection with one another, so that an electrical device m (not shown in FIG. 2) can be plugged into socket STD of modem M when modem M is plugged into a socket of energy supply network EN.
  • a connecting line VL establishes a connection to a data network DN specializing in data transmission. This connection line is also the only line that is permanently connected to the modem M according to FIG. 2.
  • the connection of the standard modem SM and the powerline communication modem PLC-M is included internally when the two modems are integrated.
  • the Powerline Communication Modem PLC-M is also connected to the ST connector of the modem M.
  • the modem M according to FIG. 2 also has components K which are common to the standard modem SM and the powerline communication modem PLC-M.
  • Such components are, for example, a data memory, a digital signal processor and power supply elements.
  • the modem M is used as intended in accordance with FIGS. 1 or 2, there is a data connection to the energy supply network EN via the external connection line VL, for example the analog telephone line, via the standard modem SM and powerline communication modem PLC-M the 230V low-voltage network is implemented.
  • a PC or other terminal device can now access the data made available via its own connection to the energy supply network EN without the need for an additional cable or an additional connection in addition to the network connection.
  • the prerequisite is that there is also a Powerline Communication Modem in the PC or the relevant end device, which converts the data from the energy supply network EN to any other data format.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephonic Communication Services (AREA)

Abstract

The invention relates to an external modem (M) that can be used in a simple manner and is provided with components which form a standard modem (SM) for connecting to a data network (DN) which is specialised in transmitting data. Said modem is also provided with components that form a powerline communication modem (PLC-M) for connecting to an energy supply network (EN) which is specialised in supplying electric appliances with electric energy. The modem (M) requires less cables for the connection thereof because the lines of the energy supply network (EN) are used therefor.

Description

Beschreibungdescription
Externes ModemExternal modem
Die Erfindung betrifft ein externes Modem gemäß dem Oberbegriff des Anspruchs 1.The invention relates to an external modem according to the preamble of claim 1.
Bei der Verwendung derzeitiger externer Modems, z.B. eines analogen Modems für den Anschluss an eine Telefonleitung, sind bis zu drei Anschlussleitungen verwendet: eine zurWhen using current external modems, e.g. of an analog modem for connection to a telephone line, up to three connection lines are used: one for
Stromversorgung, eine zum Personal Computer (PC) als ein datenverarbeitendes Gerat und eine zur Telefondose. Die An- schlussleitung zum PC oder zur Telefondose ist meist noch recht lang, wenn der PC nicht in unmittelbarer Nahe zur Tele- fondose angeordnet ist.Power supply, one to the personal computer (PC) as a data processing device and one to the telephone socket. The connection line to the PC or the telephone socket is usually still quite long if the PC is not located in the immediate vicinity of the telephone socket.
Zur Verringerung der durch eine lange Verbmdungsleitung zwischen der Telefondose und dem PC hervorgerufenen Beeinträchtigungen kann diese Verbmdungsleitung entweder fest mstal- liert oder jeweils nur bei Bedarf ausgelegt werden.To reduce the impairment caused by a long connection line between the telephone socket and the PC, this connection line can either be permanently installed or can only be designed as required.
Im ersten Fall sind Installationsmaßnahmen erforderlich. Im zweiten Fall sind wiederholt Her- und Aufraumarbeiten durchzufuhren. Insgesamt ist daher die Verwendung von externen Mo- dems damit unpraktisch.In the first case, installation measures are required. In the second case, cleaning and tidying up work must be carried out repeatedly. Overall, the use of external modems is therefore impractical.
Aufgabe der Erfindung ist es, ausgehend von externen Modems der eingangs genannten Art technische Maßnahmen anzugeben, durch die die Verwendung externer Modems wesentlich verem- facht wird.The object of the invention is to provide technical measures based on external modems of the type mentioned at the outset by which the use of external modems is considerably simplified.
Gelost wird diese Aufgabe erfmdungsgemaß durch e externes Modem, das die kennzeichnenden Merkmale des Anspruchs 1 aufweist.This task is solved according to the invention by an external modem which has the characterizing features of claim 1.
Danach weist das externe Modem neben den em Standard-Modem bildenden Komponenten für einen Datenanschluss an e für die Datenübertragung spezialisiertes Datennetz noch ein Powerline Communication-Modem bildende Komponenten für den Anschluss an em auf die Energieversorgung für elektrische Gerate spezia¬ lisiertes Energieversorgungsnetz auf.Thereafter, the external modem, in addition to the components forming the standard modem, for a data connection to e for Data transfer specialized data grid, a power line communication modem visual components for connection to em on the power supply for electrical equipment spezia ¬ ized power grid on.
Der Vorteil ist, dass für eine datentechnische Verbindung zwischen einem datenverarbeitenden Gerat, beispielsweise einem PC, und dem externen, mit dem auf eine Datenübertragung spezialisierten Datennetz verbundenen Modem keine nachtrag- lieh fest installierte oder jeweils bedarfsweise ausgelegte Verbmdungsleitung mehr benotigt wird, weil stattdessen die bereits aufgeräumt installierten Leitungen des auf die Energieversorgung elektrischer Gerate spezialisierten Energieversorgungsnetzes veiwendet werden, mit denen die einzelnen Ge- rate ohnehin wegen der Energieversorgung zu verbinden sind. Em ansonsten möglicher "Kabelsalat" ist verhindert. Nachträgliche Installationsmaßnahmen sind eingespart. Das Gesamtsystem ist übersichtlich.The advantage is that for a data connection between a data processing device, for example a PC, and the external modem, which is connected to the data network specializing in data transmission, there is no longer a need for a permanently installed or, if necessary, configured connection line, because instead the line is already tidily installed lines of the energy supply network specializing in the energy supply of electrical devices can be used, with which the individual devices are to be connected anyway because of the energy supply. An otherwise possible "cable clutter" is prevented. Subsequent installation measures are saved. The overall system is clear.
Weiter vorteilhaft ist, dass die Entfernung zwischen dem datenverarbeitenden Gerat und dem externen Modem unkritisch ist. Es kann jede geeignete Steckdose unabhängig von der Entfernung genutzt werden. Außerdem können Komponenten wie z.B. Speichereinheiten, digitale Signalprozessoren und Stromver- sorgungselementen nur einmal vorgesehen werden, die dann von allen Komponenten des externen Modems nutzbar sind.It is also advantageous that the distance between the data processing device and the external modem is not critical. Any suitable socket can be used regardless of the distance. Components such as Storage units, digital signal processors and power supply elements are provided only once and can then be used by all components of the external modem.
Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand von Unteranspruchen.Advantageous embodiments of the invention are the subject of dependent claims.
Danach weist das externe Modem einen im Gehäuse integrierten Netzstecker auf, so dass eine eigenständige Verbindungsleitung zum Energieversorgungsnetz ebenfalls entfallen kann. Es verbleibt dann nur noch die Verbmdungsleitung vom externen Modem zur z.B. Telefondose, die relativ kurz sein kann, weil eine nachstliegende Steckdose des Energieversorgungsnetzes verwendet werden kann. Weist das externe Modem auch noch eine im Gehäuse integrierte Steckdose auf, wird eine Steckdose des Energieversorgungsnetzes, m die das externe Modem eingesteckt ist, für einen Anschluss an das Energieversorgungsnetz durch ein weiteres elektrisches Gerat nicht blockiert.The external modem then has a power plug integrated in the housing, so that an independent connection line to the power supply network can also be dispensed with. All that remains then is the connection line from the external modem to the telephone socket, for example, which can be relatively short because a socket in the power supply network can be used. The external modem also has one socket integrated in the housing, a socket of the power supply network, which the external modem is plugged in, is not blocked by a further electrical device for connection to the power supply network.
Nachfolgend wird em Ausfuhrungsbeispiel der Erfindung anhand einer Zeichnung naher erläutert. Darm zeigenAn exemplary embodiment of the invention is explained in more detail below with reference to a drawing. Show intestine
Figur 1 eine Prinzipschaltung eines erfmdungsgemaßen Mo- dems, und1 shows a basic circuit of a modem according to the invention, and
Figur 2 em Ausfuhrungsbeispiel eines Modems gemäß der Figur 1 m Prmzipdarstellung.Figure 2 em exemplary embodiment of a modem according to the figure 1 m Prmzipdarstellung.
Das m der Figur 1 gezeigte Modem M u fasst in einem einzigen Gehäuse em Standard-Modem SM und em Powerline Communica- tion-Modem PLC-M. Das Standard-Modem SM hat eine erste Schnittstelle SI für die Herstellung einer Verbindung zu einem für die Datenübertragung spezialisierten Datennetz DN. Das Powerline Communication-Modem PLC-M hat eine zweite Schnittstelle S2 für die Herstellung einer Verbindung zu einem für die Energieversorgung elektrischer Gerate spezialisierten Energieversorgungsnetz EN. Durch den Anschluss des Modems M an das Energieversorgungsnetz EN wird das Modem M mit elektrischer Energie versorgt. Gleichzeitig ist das Modem M durch das integrierte Powerline Communication-Modem PLC-M m die Lage versetzt, elektronisch dargestellte Daten für eine Datenübertragung über das Energieversorgungsnetz EN auf das Energieversorgungsnetz EN aufzuschalten . Das Modem M ist durch das Powerline Communication-Modem PLC-M weiter m die Lage versetzt, auf dem Energieversorgungsnetz EN übertragene Daten herauszuflltern.The modem M u shown in FIG. 1 comprises a standard modem SM and a powerline communication modem PLC-M in a single housing. The standard modem SM has a first interface SI for establishing a connection to a data network DN specialized in data transmission. The Powerline Communication Modem PLC-M has a second interface S2 for establishing a connection to an energy supply network EN specialized for the energy supply of electrical devices. The modem M is supplied with electrical energy by connecting the modem M to the energy supply network EN. At the same time, the modem M is enabled by the integrated Powerline Communication Modem PLC-M m to connect electronically represented data for data transmission via the energy supply network EN to the energy supply network EN. The modem M is further able to fill out data transmitted on the energy supply network EN by the Powerline Communication Modem PLC-M.
Entsprechendes gilt für das mit dem für eine Datenübertragung spezialisierten Datennetz DN verbundene Standard-Modem SM. Sowohl das Standard-Modem SM als auch das Powerline Communi- cation-Modem PLC-M haben intern eine datentechnische Verbindung m der Weise, dass zwischen dem Standard-Modem SM und dem Powerline Communication-Modem PLC-M Daten hin und her ausgetauscht werden können.The same applies to the standard modem SM connected to the data network DN specialized for data transmission. Both the standard modem SM and the powerline communication modem PLC-M have an internal data connection in such a way that between the standard modem SM and the Powerline Communication Modem PLC-M data can be exchanged back and forth.
Das spezialisierte Datennetz kann beispielsweise die analoge Telefonleitung mit darin enthaltenen a/b-Adern sein. Es kann auch eine ISDN- oder xDSL-Leitung sein. Möglich ist beispielsweise auch das (TV-) Kabel, das als Fernsehanschluss verwendet ist.The specialized data network can be, for example, the analog telephone line with the a / b wires contained therein. It can also be an ISDN or xDSL line. For example, the (TV) cable that is used as a television connection is also possible.
In der Figur 2 ist eine Ausfuhrungsform des Modems M gemäß der Figur 1 gezeigt. Es umfasst em Gehäuse, das auf einer Seite einen integrierten Stecker ST für den Anschluss an das Energieversorgungsnetz EN und auf einer gegenüberliegenden Seite eine integrierte Steckdose hat. In der Figur 2 ist nicht explizit dargestellt, dass der Stecker ST und dieFIG. 2 shows an embodiment of the modem M according to FIG. 1. It includes a housing that has an integrated plug ST on one side for connection to the power supply network EN and an integrated socket on the opposite side. FIG. 2 does not explicitly show that the connector ST and the
Steckdose STD eine direkte elektrische Verbindung miteinander haben, so dass ein in der Figur 2 nicht näher dargestelltes elektrisches Gerat m die Steckdose STD des Modems M eingesteckt werden kann, wenn das Modem M in einer Steckdose des Energieversorgungsnetzes EN eingesteckt ist. Eine Verbindungsleitung VL stellt eine Verbindung zu einem auf Datenübertragung spezialisierten Datennetz DN her. Diese Verbmdungsleitung ist gleichzeitig die einzige Leitung, die fest mit dem Modem M gemäß der Figur 2 verbunden ist. Die Verbm- düng des Standard-Modems SM und des Powerline Communication- Modems PLC-M ist m der Integration der beiden Modems intern enthalten. Das Powerline Communication-Modem PLC-M ist außerdem mit dem Stecker ST des Modems M verbunden.Socket STD have a direct electrical connection with one another, so that an electrical device m (not shown in FIG. 2) can be plugged into socket STD of modem M when modem M is plugged into a socket of energy supply network EN. A connecting line VL establishes a connection to a data network DN specializing in data transmission. This connection line is also the only line that is permanently connected to the modem M according to FIG. 2. The connection of the standard modem SM and the powerline communication modem PLC-M is included internally when the two modems are integrated. The Powerline Communication Modem PLC-M is also connected to the ST connector of the modem M.
Neben anderen für die Funktion des Modems M benötigter Komponenten weist das Modem M gemäß der Figur 2 noch solche Komponenten K auf, die dem Standard-Modem SM und dem Powerline Communication-Modem PLC-M gemeinsam sind. Solche Komponenten sind beispielsweise em Datenspeicher, e digitaler Signal- Prozessor und Stromversorgungselemente. Bei einer bestimmungsgemäßen Verwendung des Modems M gemäß der Figuren 1 oder 2 besteht über die externe Verbindungsleitung VL, z.B. die analog Telefonleitung, via Standard-Modem SM und Powerline Communication-Modem PLC-M eine Datenverbin- düng mit dem Energieversorgungsnetz EN, das beispielsweise durch das 230V-Niederspannungsnetz realisiert ist. Ein PC oder ein anderes Endgerät kann nun via eigener Verbindung zum Energieversorgungsnetz EN auf die so zur Verfügung gestellten Daten zugreifen, ohne dass ein zusätzliches Kabel bzw. eine zusätzliche Verbindung neben dem Netzanschluss nötig ist.In addition to other components required for the function of the modem M, the modem M according to FIG. 2 also has components K which are common to the standard modem SM and the powerline communication modem PLC-M. Such components are, for example, a data memory, a digital signal processor and power supply elements. If the modem M is used as intended in accordance with FIGS. 1 or 2, there is a data connection to the energy supply network EN via the external connection line VL, for example the analog telephone line, via the standard modem SM and powerline communication modem PLC-M the 230V low-voltage network is implemented. A PC or other terminal device can now access the data made available via its own connection to the energy supply network EN without the need for an additional cable or an additional connection in addition to the network connection.
Vorausgesetzt ist, dass im PC bzw. dem betreffenden Endgerät ebenfalls ein Powerline Communication-Modem vorhanden ist, welches die Daten vom Energieversorgungsnetz EN auf ein beliebiges anderes Datenformat umsetzt. The prerequisite is that there is also a Powerline Communication Modem in the PC or the relevant end device, which converts the data from the energy supply network EN to any other data format.

Claims

Patentansprüche claims
1. Externes Modem zur elektronischen Übermittlung über ein auf Datenübermittlung spezialisiertes Datennetz und zum elektronischen Empfang aus einem auf Datenübermittlung spezialisierten Datennetz von m elektronischer Weise dargestellter Daten, dadurch gekennzeichnet, dass em Powerline Communication-Modem (PLC-M) bildende Komponenten zur elektronischen Übermittlung über em auf die elektrische Energieversorgung von elektrischen Geraten spezialisiertes Energieversorgungsnetz (EN) und zum elektronischen Empfang aus einem auf die elektrische Energieversorgung von elektrischen Geraten spezialisierten Energieversorgungsnetz (EN) von m elektronischer Weise dargestellter Daten integriert angeordnet sind.1. External modem for electronic transmission via a data network specializing in data transmission and for electronic reception from a data network specializing in data transmission of data represented electronically, characterized in that components forming a powerline communication modem (PLC-M) for electronic transmission via An energy supply network (EN) specializing in the electrical energy supply of electrical devices and for electronic reception from an energy supply network (EN) specialized in the electrical energy supply of electrical devices are arranged in an integrated manner from data presented electronically.
2. Externes Modem nach Anspruch 1, dadurch gekennzeichnet, dass em im Gehäuse integrierter Netzstecker (ST) vorgesehen ist.2. External modem according to claim 1, characterized in that em integrated power plug (ST) is provided in the housing.
Externes Modem nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass eine im Gehäuse integrierte Steckdose (STD) vorgesehen ist. External modem according to one of claims 1 or 2, characterized in that a socket (STD) integrated in the housing is provided.
PCT/DE2001/000682 2000-02-24 2001-02-21 External modem WO2001063787A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01913710A EP1258089A1 (en) 2000-02-24 2001-02-21 External modem

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2000108615 DE10008615A1 (en) 2000-02-24 2000-02-24 External modem
DE10008615.2 2000-02-24

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Publication Number Publication Date
WO2001063787A1 true WO2001063787A1 (en) 2001-08-30

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US7701325B2 (en) 2002-12-10 2010-04-20 Current Technologies, Llc Power line communication apparatus and method of using the same
US7769907B2 (en) 2003-10-03 2010-08-03 Asoka Usa Corporation Method and system for virtual powerline local area networks
US7415541B2 (en) 2003-10-03 2008-08-19 Asoka Usa Corporation Method and system for virtual powerline local area networks
US7461174B2 (en) 2003-10-03 2008-12-02 Asoka Usa Corporation Method and system for virtual powerline local area networks
US7136936B2 (en) 2003-10-03 2006-11-14 Asoka Usa Corporation Method and system for virtual powerline local area networks
US7769908B2 (en) 2003-10-03 2010-08-03 Asoka Usa Corporation Method and system for virtual powerline local area networks
US7426581B2 (en) 2003-11-12 2008-09-16 Asoka Usa Corporation Powerline communication system and method using coupler design for additional users
US7387529B2 (en) 2004-03-19 2008-06-17 Asoka Usa Corporation Integrated connector for powerline network and power supply
US7413471B2 (en) 2004-03-19 2008-08-19 Asoka Usa Corporation Integrated connector for powerline network and power supply
US7401239B2 (en) 2004-09-03 2008-07-15 Asoka Usa Corporation Internal powerline power supply method and system
US7457885B2 (en) 2005-02-10 2008-11-25 Asoka Usa Corporation Powerline communication system and method using coupler design for additional users
US7804763B2 (en) 2005-04-04 2010-09-28 Current Technologies, Llc Power line communication device and method
US7813099B2 (en) 2006-01-03 2010-10-12 Asoka Usa Corporation Power line outlet strip and method for powerline communications
US7671701B2 (en) 2006-06-09 2010-03-02 Current Technologies, Llc Method and device for providing broadband over power line communications
US8188855B2 (en) 2008-11-06 2012-05-29 Current Technologies International Gmbh System, device and method for communicating over power lines
WO2012052504A3 (en) * 2010-10-20 2012-06-14 Bayerische Motoren Werke Aktiengesellschaft Electrical device for a powerline system for data transmission and powerline system for data transmission
CN103168428A (en) * 2010-10-20 2013-06-19 宝马股份公司 Electrical device for a powerline system for data transmission and powerline system for data transmission
CN103168428B (en) * 2010-10-20 2015-07-08 宝马股份公司 Electrical device for a powerline system for data transmission and powerline system for data transmission
US9419681B2 (en) 2010-10-20 2016-08-16 Bayerische Motoren Werke Aktiengesellschaft Electrical device for a powerline system for data transmission and powerline system for data transmission

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EP1258089A1 (en) 2002-11-20
DE10008615A1 (en) 2001-09-06

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