WO2003063381A1 - Dispositif de couplage - Google Patents

Dispositif de couplage Download PDF

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Publication number
WO2003063381A1
WO2003063381A1 PCT/CH2002/000036 CH0200036W WO03063381A1 WO 2003063381 A1 WO2003063381 A1 WO 2003063381A1 CH 0200036 W CH0200036 W CH 0200036W WO 03063381 A1 WO03063381 A1 WO 03063381A1
Authority
WO
WIPO (PCT)
Prior art keywords
coupling
conductors
signal
data signal
coupling device
Prior art date
Application number
PCT/CH2002/000036
Other languages
German (de)
English (en)
Inventor
Markus Bittner
Erhard LÜTHI
Original Assignee
Ascom Powerline Communications Ag
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 Ascom Powerline Communications Ag filed Critical Ascom Powerline Communications Ag
Priority to EP02806558A priority Critical patent/EP1468504A1/fr
Priority to PCT/CH2002/000036 priority patent/WO2003063381A1/fr
Publication of WO2003063381A1 publication Critical patent/WO2003063381A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/56—Circuits for coupling, blocking, or by-passing of signals
    • 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
    • H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
    • H04B2203/5425—Methods of transmitting or receiving signals via power distribution lines improving S/N by matching impedance, noise reduction, gain control
    • 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
    • H04B2203/5445—Local network
    • 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
    • H04B2203/5462—Systems for power line communications
    • H04B2203/5466—Systems for power line communications using three phases conductors
    • 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
    • H04B2203/5462—Systems for power line communications
    • H04B2203/5483—Systems for power line communications using coupling circuits

Definitions

  • the invention relates to a coupling device for coupling or decoupling a data signal with a carrier frequency of more than 1 MHz into or from a power supply network.
  • the invention further relates to a corresponding method for transmitting data via a power supply network and corresponding arrangements.
  • High-bit-rate data communication has become increasingly important in recent years. Large amounts of data such as high quality music, video sequences or other large amounts of data are also being sent electronically.
  • Existing communication networks such as the fixed telephone network or cellular networks offer insufficient bandwidth for this and are often very busy. Furthermore, such networks have a major disadvantage with already existing broadband networks such as ADSL (Asymmetrical Digital Subscriber Line) or data transmission via cable television systems: they are expensive and have to be created beforehand with enormous effort.
  • ADSL Asymmetrical Digital Subscriber Line
  • Power supply networks are a suitable alternative for broadband data transmission, because firstly practically every household has a connection to a power supply network and secondly large data transmission rates can also be realized. In order to transmit data via a power supply network, however, it must first be brought into a suitable form and then fed into the power supply network.
  • the data is first encoded, compressed if necessary and then modulated onto a high-frequency carrier signal.
  • the resulting high-frequency data signal is coupled into the power supply network at the transmitter and is again coupled out of the power network at the receiver in an analog manner, demodulated, decompressed if necessary and finally decoded.
  • the object of the invention is to provide a coupling device of the type mentioned at the outset which avoids the disadvantages of the known couplers and in particular enables inexpensive and good coupling of the data signal.
  • the coupling device is designed to couple a data signal into and out of a power supply network for inductively coupling the data signal between a signal line and a pair of current conductors of the power supply network.
  • Carrier signal are modulated, which has a carrier frequency of over one MHz.
  • phase conductors ie. H. the phase conductors, the neutral conductor and any protective conductor, such as an earth conductor, are understood.
  • the coupling device By inductively coupling the data signal, the coupling device can be made from cheaper materials, which means, for example, a great price advantage compared to the capacitive couplers.
  • the coupling itself is also improved. Compared to capacitive coupling, coupling losses are reduced by about 20 to 30 dB.
  • the invention already has a significantly improved coupling.
  • an HF short circuit is advantageously provided at the coupling site. This includes, for example, a capacitance which is either connected between the two current conductors of the pair of current conductors or between each of the current conductors and a protective conductor, for example the earth conductor, of the power supply network.
  • an overcurrent fuse can optionally be connected in series with it.
  • the transverse capacitances of the HF short-circuits not only result in an improvement in the coupling factor, but also serve at the same time to ensure that the data signal only propagates in one direction on the power lines. RF interferences, which originate on the other side of the RF short-circuits, are blocked accordingly.
  • the data signal can be transmitted both in push-pull and in common mode.
  • the data signal is only transmitted on a conductor, a defined potential, for example the potential of a protective conductor, being used as a reference.
  • the data signal is transmitted between two conductors of a transmission system and can be read, for example, at the end of the two conductors as a voltage difference as a function of time.
  • the signal line therefore preferably has two signal lines for transmitting the data signal.
  • the coupling device has two coupling bodies made of a magnetic material. This material is, for example, ferrites, which are ceramic or single-crystalline substances.
  • Each coupling body is advantageously cylindrical in shape with an arbitrary base area, wherein it has a hole between the base area and the cover area.
  • Other shapes of coupling bodies can also be used, but the selected cylindrical shape, especially if it is, for example, a straight cylinder a circular or square base area, facilitates the handling and assembly of the coupling body.
  • a coupling body is used to couple the data signal between one of the signal conductors and one of the current conductors of a pair of current conductors, both of which are looped through the hole in the coupling body for this purpose.
  • the coupling body, the signal conductor and the current conductor together form a transformer, each with at least one turn on the primary and on the secondary side.
  • the size of the coupling body as well as that of its hole is matched to the corresponding conductor.
  • the coupling device can also be designed such that it can be used for coupling the data signal between the signal line and a plurality of pairs of current conductors.
  • the coupling between one of the signal conductors and one of the current conductors of each pair of current conductors takes place as just described. Both are looped through the hole of a coupling body. If several pairs of current conductors are now present, each current conductor of each pair is looped through the hole of its own coupling body and one of the signal conductors is looped through the hole in each case one of the coupling bodies of a pair of current conductors and the other signal conductor through the hole of the other coupling body of the pair of current conductors.
  • the ends of the signal conductors which have each been looped through the hole of one or more coupling bodies, are connected to one another.
  • This can be a low-resistance connection, for example via ohmic resistors, but the signal conductors can also be connected by means of capacitors in such a way that they are low-resistance only for high-frequency signals.
  • the signal conductors are advantageously connected directly to one another, ie galvanically short-circuited. This allows maximum signal currents in the signal line. So that the ends can be connected to each other, the data signal must be transmitted in push-pull mode. If this were not the case, no data signal could be transmitted in this case, since the currents in one direction do not match those in the other.
  • each coupling body consists of at least two partial bodies that can be assembled.
  • the partial bodies can be taken apart, placed around the desired conductors and put together again.
  • the partial bodies are typically held together or even pressed together by a holding device.
  • One-piece coupling bodies could also be installed, but for this the power lines would have to be disconnected, passed through the hole and then reattached to the correct location. However, this would make a power cut necessary. Thanks to the multi-part coupling body, this complex assembly work is no longer necessary.
  • the so-called folding coupling bodies which are installed in a housing and can be folded around a fixedly mounted power cable, the coupling bodies can be assembled simply and quickly.
  • the coupling body can for example be made without any air gap. So that they do not reach saturation so quickly even with high currents through the current conductors, they advantageously have an air gap which is larger the larger the saturation currents are supposed to be.
  • the inductance of the coupling body typically decreases with the enlargement of the air gap. This can result in the inductance of the coupling body becoming too small.
  • Another material could be used for the coupling bodies to increase the inductance.
  • the inductance is increased again by simply connecting a plurality of coupling bodies in series. That is, the current conductor and the signal conductor are looped not only through one coupling body, but through two or even more coupling bodies.
  • each coupling body has a series resonance circuit.
  • the coupling works without this resonance circuit, but it can be improved with it.
  • the resonance circuit typically comprises only one winding through the hole in the coupling body, the winding being closed again via a capacitance. Of course, several turns can also be present. With this winding, the attenuation when coupling from one conductor to the other can be reduced, the resonance frequency with the capacitor being able to be matched to the desired transmission frequency of the data signal.
  • a data signal with a carrier frequency above one MHz is generated from the data.
  • the data can of course also be encoded, compressed or otherwise processed.
  • a first signal line, on which the data signal is transmitted, is connected to the first transceiver.
  • the data signal is now coupled from the signal line to any pair of current conductors in a power supply network.
  • the two ends of the signal conductors, which are not connected to the transceiver are connected to one another, as mentioned above.
  • the data signal can propagate on the power supply network, the direction of propagation being determined by the HF short-circuits mentioned above.
  • the data signal is coupled from the current conductors to a second signal line with a second coupling device according to the invention, the ends of which are in turn connected to one another on one side and to a second transceiver on the other side. With the second transceiver, the original data can be recovered from the data signal.
  • the data signal transmitted on the power network can also be coupled out with other coupling devices and fed to a user.
  • the capacitive couplers mentioned at the beginning could be used in the home for the end customer, since they can be connected to any socket.
  • the coupling device according to the invention can of course also be integrated into a housing which can be plugged into a socket at the customer and which has the corresponding coupling body and in which the signal line is led to the outside.
  • the transceiver could also be integrated into this housing.
  • a further application of the coupling device according to the invention is the possibility of bypassing a specific network area of the power supply network, for example an area with high attenuation. So that the data signal does not pass through this area and is attenuated accordingly, a coupling device is used to couple the data signal from the power supply network to a signal line. The signal line is then routed around this network area and on the other side of the network area a second coupling device is used to couple the data signal again from the signal line to the power supply network. In this case, the ends of the signal line are connected on both sides.
  • the cross impedances of the RF short-circuits also present here on both sides of the network area have several advantages. First, they block high-frequency interference, which can originate from other power conductors as well as from the bypassed network area, then they result in improved coupling and finally they prevent the data signal from spreading on the power supply network into the network area to be bypassed.
  • Fig. 1 shows a schematically illustrated application of the inventive
  • FIG. 2 shows a further application of the coupling device according to the invention in a sub-distribution to a plurality of risers
  • FIG. 3 shows an application of the coupling device according to the invention for bypassing a floor distribution
  • Fig. 4 shows an application of the coupling device according to the invention in the outdoor area for adapting the impedance between an overhead line and a
  • Fig. 5 shows a plurality of coupling ferrites connected in series as well
  • FIG. 6 shows a coupling ferrite with a series resonance circuit.
  • FIG. 1 shows an application of the coupling device according to the invention.
  • a house connection line 1 is shown in a house connection box, the phase conductors 2.1, 2.2 and 2.3 and the neutral / protective conductor 3 of which are each laid on a busbar 4.1, 4.2, 4.3 or 5.
  • the phase conductors 7.1, 7.2, 7.3, 7.4, 7.5, 7.6 are each protected by an overcurrent fuse 9.
  • a first transmitter / receiver 10.1 for example a modem, is shown, to which a signal line 11 with two signal lines 11.1, 1.2 is connected.
  • a coupling ferrite 12.1, 12.2 is further placed around the phase conductors 2.2 and 2.3, respectively, through which one of the two signal conductors 1 1.1 and 1 1.2 are also guided.
  • the coupling ferrites 12.1, 12.2 each have a hole through which the phase conductors or the signal conductors can be looped.
  • the signal conductors 1 1.1 and 1 1.2 are connected to each other after they are passed through the hole of each coupling ferrite 12.1, 12.2 so that the maximum signal current can flow.
  • coupling rings with a width in the range of approximately 10 to 30 mm, an outer diameter in the range of 20 to 40 mm and an inner diameter in the range of 10 to 30 mm are used as coupling ferrites 12.1, 12.2, with an air gap of the order of magnitude from 0.1 mm to about 2 mm.
  • the size of the air gap depends on the ferrite material used and on the desired maximum saturation currents, with saturation currents of up to about 300 amperes being easily achieved.
  • the inductance of the coupling ferrites decreases with the size of the air gap. With the size of the air gap and the number of coupling ferrites, both the inductance and the maximum saturation currents of the couplers can be set practically as desired.
  • an HF short circuit 13.1, 13.2, 13.3, ie a connection is in each case between the phase conductors 7.1, 7.2, 7.3 of the riser 6.1 and the busbar 5 for the neutral / protective conductors.
  • a capacitance which acts as a short circuit for high-frequency signals.
  • this comprises a series connection of a capacitance and an overcurrent fuse, the capacitance being a high-frequency short circuit between a respective phase and the neutral / protective conductor serves.
  • the overcurrent fuse is only inserted to protect the circuit.
  • the HF short circuits 13.1, 13.2, 13.3 thus prevent the propagation of a data signal received on the house connection cable both on the riser 6.1 and on any other riser 6.2 which branch off from the busbars 4.1, 4.2, 4.3, 5.
  • the data signal decoupled from the house connection line 1 is processed by the transmitter / receiver 10.1, which is connected to a second transmitter / receiver 10.2, for example via Ethernet.
  • a signal line 14 with two signal conductors 14.1, 14.2 is in turn connected to the transmitter / receiver 10.2.
  • a corresponding data signal is coupled from the signal line 14 to the risers 6.1, 6.2.
  • further coupling ferrites 12.3, 12.4, 12.5, 12.6 are present, which are each laid around two phase conductors 7.2, 7.3, 7.5, 7.6 of the two risers 6.1, 6.2.
  • the HF short circuits 13.1, 13.2, 13.3 thus also serve to improve the coupling between the signal line 14 and the risers 6.1, 6.2. In addition, they simultaneously prevent the spread of a data signal coupled into a riser 6.1, 6.2 in the direction of the house connection or block RF interferences which come from the other current conductors.
  • the interface between the two transmitters / receivers 10.1 and 10.2 effectively forms the interface between two PLC (powerline communication) lines, the first PLC line comprising the transmission of a data signal on the house connection line 1 and the second PLC line the transmission of the data signal on the Electricity grid within the house includes.
  • PLC powerline communication
  • the coupling of the data signal naturally also works in the opposite direction, ie if a customer couples a data signal into the power supply network at a socket in the house, this will be on the second PLC line, ie the corresponding riser 6.1, 6.2, transmitted in the direction of the house connection, coupled to the signal line 14, transmitted from the transmitter / receiver 10.2 to the transmitter / receiver 10.1 and coupled from the signal line 11 to the first PLC route, namely the house connection line 1.
  • the data signal is transmitted on the house connection line, for example, to the next transformer station, where it is decoupled from the house connection line and fed into an external communication system.
  • FIG. 2 shows only the indoor system with a transmitter / receiver 10.3, to which two signal lines 15, 16 with two signal conductors 15.1, 15.2 and 16.1, 16.2 are connected at the same time ,
  • risers 6.3, 6.4, 6.5, 6.6 are connected to the busbars 4.1, 4.2, 4.3, 5, with one signal line 15 and 16 coupling the data signal onto two risers 6.3 and 6.4 or 6.5 and 6.6, respectively.
  • two coupling ferrites 12.7, 12.8, 12.9, 12.10, 12.1 1, 12.12, 12.13, 12.14 are available per riser, through which the corresponding phase conductors 7.7, 7.8, 7.1 1, 7.12, 7.13, 7.15, 7.17 and 7.18 are looped.
  • HF short circuits 13.4, 13.5, 13.6, 13.7 are present.
  • they are not provided here between the phase conductors and the neutral / protective conductor, but rather between the two phase conductors 7.7 and 7.8 or 7.1 1 and 7.12 or 7.13 and 7.15 or 7.17 and 7.18 each of a riser 6.3, 6.4, 6.5, 6.6 on which the data signal is coupled.
  • FIG. 3 shows a further application of the coupling device according to the invention.
  • two coupling devices are used to bypass an area of the power supply network which has, for example, increased attenuation for high-frequency signals.
  • Such an area is, for example, an electricity meter 17 in a floor distribution together with the busbars 4.1, 4.2, 4.3 and 5 and the overcurrent protection devices 9 in the output area of the electricity meter 17.
  • the phase conductors 7.1, 7.2, 7.3 and the neutral / protective conductor 8 of the riser are routed to the input of the electricity meter 17.
  • the corresponding outputs for the phase conductors lead to busbars 4.1, 4.2, 4.3, from which, each protected by an overcurrent fuse 9, the individual phase conductors branch off for the individual rooms in an apartment!
  • the Neutra I / protective conductor 8 for the individual rooms are routed around the electricity meter 17 and can be tapped off from their own busbar 5.
  • the data signal is now extracted from the device using two coupling ferrites 19.1, 19.2
  • Riser line 6.1 coupled to a signal line 18 with the signal conductors 18.1, 18.2.
  • an HF short circuit 13.8 is again provided, which not only improves the coupling but also prevents the data signal from spreading in the direction of the electricity meter 17.
  • coupling ferrites 19.1, 19.2, 19.3, 19.4, cube-shaped coupling bodies with an edge length of approximately 10 to 35 mm and a hole diameter in the range of 3 to 20 mm are used in this example, with an air gap of the order of magnitude of 0.1 mm to approximately 2 mm exhibit.
  • the inductance of the couplers and the maximum saturation currents can also be set here with the number of coupling ferrites, the choice of ferrite material and the size of the air gap.
  • the signal line 18 is routed around the unwanted network area and behind this area of increased attenuation, the data signal can be specifically coupled back onto those phase conductors 7.19, 7.21 where it is needed by the customer.
  • the data signal is transmitted on phase conductors 7.19 and 7.21 in common mode, since it is only coupled onto one conductor at a time.
  • the neutral / protective conductor 8 serves as a reference when tapping the data signal in the respective target areas.
  • the phase conductor 7.19 covers, for example the living room / corridor area and the phase conductor 7.21 the working / bedroom area.
  • An HF short circuit 13.9 is again provided between these two phase conductors, which not only improves the coupling and blocks HF interference from outside, for example from the electricity meter 17 or from the other phase conductors 7.20, 7.22, 7.23, 7.24, but also the propagation of the data signal back towards the electricity meter 17 and thus also on the remaining phase conductors 7.20, 7.22, 7.23, 7.24 prevented.
  • FIG. 4 shows schematically an impedance matching in an overhead line 20.
  • This comprises a plurality of masts 21, on each of which two overhead lines 20.1, 20.2 are suspended.
  • An impedance of the order of magnitude of approximately 600 ohms is present between the overhead conductors 20.1, 20.2.
  • the overhead lines 20.1, 20.2 are brought together to form a house connection line 22, the impedance between the two lines being reduced to approximately 100 ohms.
  • This is such a large difference in impedance that it can lead to problems. For example, reflections can occur at the transitions, which means that only a small amount of signal energy can be transmitted.
  • a data signal transmitted on the overhead line 20 is coupled to the signal lines 23.1, 23.2 before the leads 20.1, 20.2 are brought together, the signal line having a defined impedance of, for example, 100 ohms.
  • coupling ferrites 12.15 and 12.16 are used, which are placed around the free conductors 20.1, 20.2, the signal conductors 23.1, 23.2 being looped through the hole in the coupling ferrites 12.15, 12.16 not only once, but at least twice each, in contrast to the previous examples ,
  • an RF short circuit 13.10 is provided between the two overhead lines 20.1, 20.2, which improves the coupling on the one hand and blocks interference on the other hand and prevents the further propagation of the data signal in the direction of the house connection line 22 on the overhead line 20.
  • the data signal is again coupled from the signal line 23 to the free conductors 20.1, 20.2.
  • two coupling ferrites 12.17, 12.18 are used, which are placed around the two free conductors 20.1, 20.2 shortly before they are brought together, and a signal line 23.1, 23.2 is passed through each of the holes.
  • the impedance difference could thus be reduced from 6 to 1 to approximately 6 to 4.
  • FIG. 5 shows an example of a coupling device in which a plurality of coupling ferrites 24.1, 24.2, 24.3, 24.4 are connected in series.
  • a current conductor 25 and a signal conductor 26 are looped through the coupling ferrites 24.1, 24.2, 24.3, 24.4, between which a data signal is to be coupled.
  • the coupling ferrites 24.1, 24.2, 24.3, 24.4 each have an air gap 27 which increases the saturation current of each coupling ferrite, but at the same time reduces its impedance.
  • four coupling ferrites 24.1, 24.2, 24.3, 24.4 are simply connected in series.
  • FIG. 6 shows a further possibility for improving the coupling factor.
  • a coupling ferrite 28 with an air gap 27 is supplemented with a resonance which only consists of a turn 29 of a wire which is closed by a capacitance 30.
  • the winding 29 with the capacitance 30 forms a series resonance circuit, the resonance frequency of which depends on the size of the capacitance 30 on the transmission frequency, i. H. the carrier frequency of the data signal, which is above 1 MHz, can be tuned.
  • the invention allows an efficient coupling of a high-frequency data signal between a signal line and (at least) one

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  • 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)

Abstract

Selon l'invention, dans un système de lignes électriques, un couplage inductif d'un signal de données est réalisé entre une ligne de raccordement de particulier (1) et une ligne de signal (11) qui est connectée à un émetteur-récepteur (10.1). Des ferrites de couplage (12.1, 12.2) sont disposés autour de deux conducteurs de phase (2.2, 2.3) de la ligne de raccordement de particulier (1), les conducteurs de signal (11.1, 11.2) de la ligne de signal (11) pouvant également être mis en boucle en passant par les orifices desdits ferrites. Un signal de données qui est transmis par l'émetteur-récepteur (10.1) à la ligne de signal (11) peut être couplé grâce à ce dispositif de couplage aux deux conducteurs de phase (2.2, 2.3) de la ligne de raccordement de particulier (1). L'ensemble du dispositif fonctionne également dans l'autre sens.
PCT/CH2002/000036 2002-01-24 2002-01-24 Dispositif de couplage WO2003063381A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP02806558A EP1468504A1 (fr) 2002-01-24 2002-01-24 Dispositif de couplage
PCT/CH2002/000036 WO2003063381A1 (fr) 2002-01-24 2002-01-24 Dispositif de couplage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH2002/000036 WO2003063381A1 (fr) 2002-01-24 2002-01-24 Dispositif de couplage

Publications (1)

Publication Number Publication Date
WO2003063381A1 true WO2003063381A1 (fr) 2003-07-31

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WO (1) WO2003063381A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009043950A1 (fr) 2007-10-02 2009-04-09 Diseño De Sistemas En Silicio, S.A. Dispositif d'injection multiple par induction sur de multiples conducteurs

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4668934A (en) * 1984-10-22 1987-05-26 Westinghouse Electric Corp. Receiver apparatus for three-phase power line carrier communications
JP2000151479A (ja) * 1998-11-12 2000-05-30 Mitsubishi Electric Corp 移動体の給電線重畳通信装置
WO2001084737A1 (fr) * 2000-04-19 2001-11-08 Interessengemeinschaft für Rundfunkschutzrechte GmbH Schutzrechtsverwertung & Co. KG Procede et dispositif pour rendre une installation electrique de batiment apte a la transmission rapide de donnees

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4668934A (en) * 1984-10-22 1987-05-26 Westinghouse Electric Corp. Receiver apparatus for three-phase power line carrier communications
JP2000151479A (ja) * 1998-11-12 2000-05-30 Mitsubishi Electric Corp 移動体の給電線重畳通信装置
WO2001084737A1 (fr) * 2000-04-19 2001-11-08 Interessengemeinschaft für Rundfunkschutzrechte GmbH Schutzrechtsverwertung & Co. KG Procede et dispositif pour rendre une installation electrique de batiment apte a la transmission rapide de donnees

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 08 6 October 2000 (2000-10-06) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009043950A1 (fr) 2007-10-02 2009-04-09 Diseño De Sistemas En Silicio, S.A. Dispositif d'injection multiple par induction sur de multiples conducteurs
ES2328996A1 (es) * 2007-10-02 2009-11-19 Diseño De Sistemas En Silicio, S.A. Dispositivo de multiinyeccion inductiva sobre multiples conductores.
US8274341B2 (en) 2007-10-02 2012-09-25 Marvell Hispania, S.L.U. Device for inductive multi-injection on multiple conductors
US8618893B2 (en) 2007-10-02 2013-12-31 Marvell Hispania, S.L.U. Transmission medium with inductive current transmission on multiple conductors

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Publication number Publication date
EP1468504A1 (fr) 2004-10-20

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