EP1454423A1 - Transmission de donnees haute frequence - Google Patents

Transmission de donnees haute frequence

Info

Publication number
EP1454423A1
EP1454423A1 EP01275046A EP01275046A EP1454423A1 EP 1454423 A1 EP1454423 A1 EP 1454423A1 EP 01275046 A EP01275046 A EP 01275046A EP 01275046 A EP01275046 A EP 01275046A EP 1454423 A1 EP1454423 A1 EP 1454423A1
Authority
EP
European Patent Office
Prior art keywords
power
data signal
power supply
input
supply network
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Withdrawn
Application number
EP01275046A
Other languages
German (de)
English (en)
Inventor
Hanspeter Widmer
Kurt Müller
Markus Bittner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Current Communications International Holding GmbH
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
Publication of EP1454423A1 publication Critical patent/EP1454423A1/fr
Withdrawn legal-status Critical Current

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
    • H04B2203/5483—Systems for power line communications using coupling circuits
    • 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
    • H04B2203/5491—Systems for power line communications using filtering and bypassing

Definitions

  • the invention relates to an arrangement for transmitting a high-frequency data signal via a power supply network between at least one user device connected to the power supply network and a communication device which is connected to the power supply network via at least one coupling device, the at least one coupling device for coupling in and out a high-frequency data signal is formed in or out of the power supply network.
  • the invention further relates to a corresponding method and a bypass device for such an arrangement.
  • the data is modulated onto a high-frequency signal, which is then coupled into one of the lines of the power network.
  • the data signal is coupled out of the power conductor and, if necessary, demodulated.
  • the range that is possible with such systems depends largely on the nature of the network over which the data is to be transmitted. For example, if the network has many branches and / or jumps in impedance, this results in high attenuation of the high-frequency data signal. In order to cover a certain distance, the data signal must have more power accordingly.
  • An example of a network area with high attenuation is the house connection of a low-voltage power supply network, where the current is distributed from one of the supply lines of a transformer station to the individual customer connections.
  • This area of the power grid usually includes not only a plurality of busbars for tapping the individual customer connections, but typically also overcurrent fuses and the electricity meters for the customer connections.
  • a high-frequency data signal coupled into the low-voltage power supply network is thus subjected to a large attenuation during the transmission from the supply line to one of the customer connections or vice versa.
  • the transformer station for example the area of the distribution of the step-down current.
  • the low voltage is typically routed to a busbar, from which a plurality of supply lines branch off.
  • Each supply line usually also has an overcurrent protection.
  • a powerline signal which is coupled into the network at the busbar, for example, In turn, transmission to the individual supply lines is greatly damped by the branches and the fuses.
  • a known way to solve these problems is to couple the signal to be transmitted with a corresponding amount of power into the network so that it also has enough power after the house connection or after the transformer station so that it can be correctly detected at the receiver.
  • this solution has several disadvantages. For example, the energy requirement for the transmission of the data increases in accordance with the power of the data signal. In addition, with increasing power, the electromagnetic radiation of the corresponding lines is increased, which can lead to undesired or even unauthorized radiation values. In addition, the transmitting and receiving devices involved must be designed for the higher signal powers, which automatically results in more expensive devices.
  • the object of the invention is to provide an arrangement of the type mentioned at the outset which makes it possible to avoid the disadvantages of the prior art and in particular enables high-frequency data transmission via low-voltage networks with reduced transmission power.
  • the arrangement for transmitting a high-frequency data signal via a power supply network between a user device which is connected to the power supply network and a communication device which is connected to the power supply network via a coupling device comprises a bypass device which serves network areas with increased attenuation to bypass for high frequency signals.
  • the coupling device is designed to couple a high-frequency data signal into and out of the power supply network and, viewed from the user device, is connected to the power network in front of the area of increased attenuation. This prevents the high-frequency data signal from the communication between the user and communication device must pass through this area of increased attenuation.
  • the term increased only means that the attenuation for high-frequency signals is higher than, for example, in the case of a direct wire connection.
  • the damping is increased, for example, if the corresponding network area has many branches or if it has additional impedances, such as are typical for overcurrent fuses or current measuring devices.
  • the user device is, for example, a powerline modem of a known type which, for example, connects a user's computer to the power supply network.
  • User data to be transmitted are modulated onto a high-frequency carrier signal by the modem and then coupled into the power supply network.
  • a received data signal is demodulated and the data forwarded to the user or his computer.
  • the arrangement can also be for multiple user devices, i. H. be designed for several users, who are typically each connected to a different branch of the power supply network.
  • a plurality of coupling devices are correspondingly provided, which are connected to the corresponding branches of the power network.
  • a bypass device is provided according to the invention, to which the communication device is connected on one side and the coupling device (s) is or are connected on the other side.
  • the bypass device establishes the connections between the communication device and the coupling device (s).
  • the bypass device is designed such that it distributes the power of a high-frequency data signal transmitted in the direction of the user device to the connected coupling devices.
  • the high-frequency data signal to be transmitted between the communication device and the user device (s) is not at the common root point of the Branches behind the area of increased attenuation, but, (seen from the user device) in front of this area in or out of the power line, the areas of high attenuation can be avoided.
  • This allows the data signal to be fed into the corresponding current conductor in both transmission directions with a reduced transmission power.
  • the corresponding devices can therefore be designed for lower nominal powers and thus manufactured more cheaply.
  • the bypass device in which the power of the data signal is divided in the direction of the user devices also results in a further reduction in the transmission power in the area of the network branches to which the user devices are connected.
  • the invention can be applied to any power network via which high-frequency data signals are to be transmitted and which has individual areas of increased attenuation.
  • any power network via which high-frequency data signals are to be transmitted and which has individual areas of increased attenuation.
  • use in power networks of any voltage level i. H. from small to low and medium voltage networks to high and low. High voltage network conceivable.
  • the invention is preferably applied to low voltage power supply networks.
  • These power supply networks typically take over the fine distribution of the electricity transformed to low voltage to the end customers. D h. they provide access to most potential customers for Powerline communication applications. As a result, most data traffic also runs over such networks.
  • such low-voltage power supply networks between the transformer and an end customer usually have several areas with increased attenuation. The invention is ideally suited to circumventing such areas.
  • Areas of increased damping where the invention is preferably used, are formed by the various distribution devices, such as are present in transformer stations or in house connections. With these distribution devices, the current is distributed from a supplying power line to at least one outgoing power line. But not only these branches have an increased attenuation for high-frequency signals Consequences, also overcurrent fuses and / or electricity meters, which are typically provided in the discharging power lines, contribute to this.
  • the corresponding coupling device between the user device and the distribution device i. H. seen from the user device in front of the distribution device, connected to the mains.
  • the invention can be used not only in distribution devices, but also in other areas of a low-voltage power supply network with increased attenuation.
  • Such power networks have branches not only in the area of the transformer station or the house connection, but in the entire area of the network.
  • these areas are often not as easily accessible from the outside as the distribution devices mentioned, which is why an application of the invention would be correspondingly cumbersome and complex.
  • the low-voltage network has an increased attenuation in the area of a house connection, where the current is distributed from a supply line to a plurality of customer lines.
  • the individual conductors of the supply line are routed to a busbar to which the individual customer lines are connected.
  • the user devices are then each connected to one of the customer lines.
  • each customer line typically has a fuse and an electricity meter in the area of the busbar.
  • the arrangement according to the invention is therefore preferably designed to bypass a house connection, the coupling device, viewed from a user device, being connected in front of the fuse or the electricity meter.
  • the invention can be applied to all Powerline systems.
  • a high-frequency data signal fed into the supply line at the transformer station is namely decoupled from the supply line in front of the busbar of the house connection, passed through the bypass device and finally coupled back into the desired customer line or the desired customer lines after the meter or after the fuse and forwarded to the respective recipient.
  • This can also be done in the opposite direction.
  • the attenuation in the bypass area is significantly lower than the attenuation when crossing the house connection.
  • the data signal must be coupled into the transformer station with significantly lower power, since it only has to be sufficient to reach the house connection and not to reach the customer behind the house connection.
  • the transmission power when forwarding the data signal via the bypass can also be significantly reduced compared to forwarding through the house connection, so that the receiver receives the same power.
  • the data signal arriving at the receiver naturally has a higher power with the same transmission power if the invention is applied.
  • the communication device is connected to the input and the coupling device (s) are connected to the outputs.
  • the bypass device In order to transmit a signal present at the input to one or more coupling devices, the bypass device also has means for selectively connecting the input to at least one output. This makes it possible to forward the signal at the input to one output, several or even all outputs.
  • the bypass device has means which serve to distribute the power of the input signal to the output signal or outputs.
  • This division of the power is advantageously carried out in such a way that the power is divided equally among the relevant outputs. I.e. if the data signal is to be forwarded to three apartments in a house which has, for example, eight apartments, the power of the data signal is distributed to the three corresponding outputs of the bypass device in such a way that each of the three partial signals has the same power.
  • This power distribution can be implemented, for example, with a cascade of power dividers, each with one input and two outputs. However, power dividers with one input and more than two outputs are also available, and these must be combined in such a way that the desired number of outputs is available.
  • power dividers are used which are designed such that their outputs are decoupled from one another. Instead of dividing the power equally into the desired outputs, it could also be done unevenly. However, the reception quality of the different customers could be different, which would be undesirable. However, it is conceivable that when dividing the power, the following network topology is taken into account and the power is specifically distributed unevenly among the various outputs in such a way that, for example, different attenuations due to uneven transmission paths would be compensated.
  • the outputs can also be optionally connected to the input.
  • the bypass device is preferably designed such that means for amplifying a signal are provided in the direction of the input. I.e. A data signal that is forwarded from one or more outputs to the input is amplified to a certain performance level by these means and is forwarded via the input to the communication device.
  • the data signal is amplified in the direction of the input so that a sufficient SNR (signal to noise ratio) for correct detection of the data signal can be achieved in the communication device, despite feeding the data signal with reduced power.
  • SNR signal to noise ratio
  • control means could be saved. In this case, however, different forward or backward paths, and thus a performance adjustment in the backward path, could not be realized at all or only with great effort.
  • One option is to provide a control input to which a control signal can be applied, which externally controls which connections are to be switched through. This external control can take place, for example, through the communication device, which knows when a Data signal from inputs to one or more outputs or vice versa.
  • control means are integrated in the bypass device. These control the switching of the connections, for example, as a function of one or more parameters, for example as a function of the signals present at the input and / or the outputs.
  • FIG. 1 shows a building using the low-voltage power supply network for powerline communication with a bypassing the house connection according to the invention
  • FIG. 2 shows a bypass device according to the invention with means for power sharing
  • Fig. 3 shows another embodiment of the bypass device without
  • Power splitter; 4 shows a further embodiment of the bypass device with a 1: 4
  • FIG. 5 shows a power divider for the bypass device from FIG. 2;
  • FIG. 6 shows a bypass device with internal means for controlling the connections between the inputs and the outputs
  • Fig. 7 is a bypass device with control input for external control of the
  • Fig. 8 shows a further bypass device with internal means for controlling the
  • Fig. 9 shows a transformer station with feed of Powerline signals
  • FIG. 10 shows a further variant for using the invention in a building according to FIG. 1.
  • FIG. 1 shows a building 2 connected to a power grid 1, typically a low-voltage power grid, in which the current from the house connection 3 is distributed, for example, to a plurality of customer lines 4.1, 4.2, 4.3, 4.4 and to the individual apartments 5.1, 5.2, 5.3, 5.4 to be led.
  • the current is conducted to a busbar 4, from which the individual customer lines 4.1, 4.2, 4.3, 4.4 branch, each customer line 4.1, 4.2, 4.3, 4.4 separately via an overcurrent fuse 6.1, 6.2, 6.3, 6.4 and an electricity meter 7.1 , 7.2, 7.3, 7.4 is performed.
  • Apartments 5.1, 5.3 and 5.4 are also connected to power grid 1 for Powerline communication.
  • the high-frequency data signals are, for example, coupled into the power grid 1 at the transformer station (not shown in FIG. 1) and routed to the building 2 via the supply line 8 or house connection line 9.
  • the data signal is coupled out of the house connection line 9 with a communication device 10 in front of the house connection 3.
  • the data signal is then forwarded to the bypass device, hereinafter referred to as distributor box 11.
  • the data signal is divided in the distribution box 11 and, in the example shown, is routed to three coupling devices 12.1, 12.3, 12.4, which couple the data signal into the corresponding customer lines 4.1, 4.3, 4.4.
  • the data signal can then be picked up in the respective dwellings 5.1, 5.3, 5.4 with a corresponding user device 10.1, 10.2, 10.3 at any socket.
  • the data signal is inserted into the power supply system 1 with the aid of the user device 10.1, 10.2, 10.3 and is decoupled from the corresponding coupling device 12.1, 12.3, 12.4 in front of the respective counter 7.1, 7.3, 7.4. After that it will
  • the data signal is, for example, decoupled again from the power network 1 and into other devices via appropriate devices
  • Communication networks such as the public telephone network or the Internet fed.
  • the data signal decoupled from the house connection line 9 by the communication device 10 can also be demodulated and, if necessary, decoded. In this case, the data must be modulated again accordingly before forwarding to the distribution box 11 and, if necessary, encoded.
  • the distributor box 1 1 In the backward direction, ie from the customer towards the house connection line, the distributor box 1 1 either acts as a combiner, which simply sums up the signals at the outputs and places them on the input, or it works selectively and only switches the output through to the input , to which a correct data signal is present.
  • the network area around the house connection 3 has an increased attenuation for high-frequency signals due to the branches in the busbar 4 and the fuses and counters. With the arrangement shown in FIG. 1, this network area can be circumvented in a simple manner, so that the high-frequency data signal can be transmitted by the communication device 10 or by the coupling devices 12.1, 12.3 and 12.4 with a significantly lower power than if the data signal is via the house connection 3 would be performed.
  • the distributor box 1 1 is prepared for connecting the fourth apartment 5.2 and has a corresponding output. If the customer in apartment 5.2 decides to also use Powerline services, the connection can be made in a simple manner by connecting a coupling device to the distribution box 11 and to the customer line 4.2.
  • the distribution box 11 is shown in FIG. It comprises an input 13 and four outputs 14.1, 14.2, 14.3, 14.4. Furthermore, it comprises a plurality of power dividers 15 with which the power of a signal present at input 13 is divided equally between the four outputs 14.1, 14.2, 14.3, 14.4. This enables a further reduction in the high-frequency power transmitted in the in-house area to be achieved.
  • the power divider 15 is shown in FIG. 5. It has an input 15.1 and two outputs 15.2, 15.3 and routes a signal fed in at input 15.1 to both outputs 15.2, 15.3 further, the power of the signal being evenly divided between the two outputs 15.2, 15.3.
  • the two output signals are not coupled to one another.
  • it is a kind of Wilkinson power divider.
  • the signal attenuation in the forward direction is low, ie approximately in the order of 3 dB.
  • FIG. 3 shows another distributor box 1.1, likewise with an input 13 and four outputs 14.1, 14.2, 14.3, 14.4.
  • a signal present at input 13.1 is placed on a busbar 16 and tapped from there individually for each output 14.1, 14.2, 14.3, 14.4.
  • Figure 4 shows the distribution box 1 1.1 with an extension.
  • the signal is not placed on a busbar, but on the input of a 1: 4 power divider 17. This distributes the power of the input signal evenly across all four outputs 14.1, 14.2, 14.3, 14.4.
  • FIG. 6 shows a further variant of the distributor box 1 1.2.
  • This has two different signal paths between the input 13 and the power divider network.
  • the signal path leads from the input 13 via a switch 18 to the input of the first power divider 15.
  • the signal path leads from the input of the first power divider 15 via an amplifier 19 to the input of the distributor box 1 1.2.
  • the switch 18 is now controlled by a control device 20 such that the switch 18 closes the forward path when a signal in the forward direction, or that the switch 18 closes the reverse path when a signal is to be transmitted in the reverse direction.
  • the amplifier 19 is used so that the data signals can also be coupled into the customer lines 4.1, 4.3, 4.4 with a reduced power in the reverse direction, ie by the customer, so that the radiation values in the region of the customer lines do not exceed a predetermined limit.
  • the data signal is attenuated by the distributor box 1 1 and reaches the customer lines 4.1, 4.3 4.4 with a reduced output.
  • This reduced performance is sufficient for the Radiation values are in the desired ranges and the SNR (signal to noise ratio) at the customer is sufficient for the correct detection of the data signal. That is, the customer should also couple the data signal in the reverse direction with a power into the customer lines 4.1, 4.3 4.4, which corresponds approximately to the already reduced power.
  • the distributor box Since the distributor box also attenuates the data signal by a certain amount in the reverse direction, the SNR of the data signal arriving at the communication device 10 could fall below the minimum limit and therefore no longer be correctly detected.
  • the amplifier now slightly increases the power level of the data signal in the reverse direction, so that with the lowest possible transmission power on the customer lines 4.1, 4.3 4.4, a sufficient SNR can be achieved in the communication device 10.
  • the transmission direction is determined by the control device 20, which for this purpose is connected, for example, to the signal line between the input 13 and the switch 18. Based on the transmitted signals, the control device 20 determines the direction of the current signal transmission.
  • the control device 20 has, for example, a level detector (not shown) which, based on the signal level, determines the direction of transmission and controls the switch 18 in such a way that it closes the forward or the reverse path in accordance with the direction of transmission.
  • FIG. 7 also shows a distribution box 1 1.3 with the same signal paths in the forward and backward direction as the distribution box 1 1.2 from FIG. 6.
  • the switch 18 is controlled here externally and not by an internal control device.
  • the distribution box 1 1.3 has a control input 21 for connecting a corresponding control line 22.
  • the control signal for controlling the switch 18 is generated, for example, by the communication device 10. This is because, by default, it is responsible for the signal transmission to and from the customers and thus already knows in advance who is transmitting data and in which direction and can control the switch 18 accordingly.
  • the distributor box 1 1.4 shown in FIG. 8 is essentially the same as the distributor box 1 1.3 from FIG. 7. However, it has additional means for selective Connection of a single output 14.1, 14.2, 14.3, 14.4 to input 13. These means each comprise a switch 18.1, 18.2, 18.3, 18.4 between the power divider network and each output 14.1, 14.2, 14.3, 14.4 and control lines for opening or closing the switches 18.1, 18.2, 18.3, 18.4 depending on the signals to be transmitted , As shown, the control is carried out by a control device connected to the control input 21, for example by the communication device 10. In principle, however, an internal control would also be possible, for which purpose the distribution box 14 would have to have means for analyzing the data stream to be transmitted, for example.
  • FIG. 23 Another application of the distributor box according to the invention in the area of a transformer station 23 is shown in FIG.
  • the current coming from a medium-voltage line 24 is transformed from a transformer 25 to low voltage and distributed via a busbar 26 to a plurality of supply lines 27.1, 27.2, 27.3, 27.4, each supply line 27.1, 27.2, 27.3, 27.4 with an overcurrent fuse 28.1 , 28.2, 28.3, 28.4 is secured.
  • a powerline signal which is supplied by a communication device 29, which is connected to the Internet, for example, is typically fed into the busbar 26.
  • This has the advantage that the signal on all supply lines 27.1, 27.2, 27.3, 27.4 to the customer is transmitted.
  • the signals are damped relatively strongly by the branches at the busbar 26 and the overcurrent fuses 28.1, 28.2, 28.3, 28.4.
  • the data signal from the communication device 29 can be routed to a distribution box 1 1.5 according to the invention, divided and finally, after the overcurrent fuses 28.1, 28.2, 28.3, 28.4, by means of a coupling device 12.1, 12.3, 12.4, directly into each desired supply line , for example the supply lines 27.1, 27.3, 27.4 are coupled in.
  • FIG. 10 shows further possible uses of the invention. Building 2 from FIG. 1 is again shown. The only difference is that the communication tion device 10 is not connected to the house connection line 9, but to a communication network 30. That is, the data transmission between a user device 10.1, 10.2, 10.3 and the communication network 30 does not take place by means of powerline communication via the supply line 8 and transformer station, but via the direct connection of the communication device 10 to the communication network 30.
  • the communication device 10 can of course also be designed such that the customer lines 4.1, 4.3, 4.4 connected to the distributor box 1 1 together form a type of LAN (local area network). This is achieved in that the communication device 10 does not send the data received from a user device 10.1, 10.2, 10.3 in one of the apartments 5.1, 5.3 and 5.4 to the communication network 30, but to another user device 10.1, 10.2, 10.3 in one of the apartments 5.1, 5.3 and 5.4 transmitted.
  • LAN local area network
  • the invention allows data to be transmitted via power lines by means of high-frequency data signals, the transmission power of the data signals being reduced in such a way that the undesired radiation generated by the transmission of high-frequency signals, in particular in critical areas such as house connections in buildings , can be reduced.
  • This reduction in transmission power is achieved in various stages.
  • the transmission power can be reduced because network areas with high attenuation are avoided.
  • the distribution of the data signal in the distribution box in the direction of the customer, in particular by means of the power dividers results in a further reduction in the power fed into a customer line.
  • an amplifier ensures that the data signal has the required power level despite the low transmission power.

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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

L'invention concerne un système pour la transmission d'un signal de données haute fréquence par l'intermédiaire d'un réseau d'alimentation en courant (1) qui présente une zone d'atténuation accrue (3) pour des signaux haute fréquence. Dans le système selon l'invention, le signal haute fréquence est découplé du réseau avant la zone d'atténuation accrue à l'aide d'un appareil de communication (10) et conduit à l'entrée d'un dispositif de dérivation (11). Dans le dispositif de dérivation, le signal est réparti en fonction de la puissance sur une pluralité de sorties dont chacune est injectée individuellement dans une branche du réseau (4.1, 4.2, 4.3, 4.4) par l'intermédiaire d'un dispositif de couplage (12.1, 12.2, 12.3, 12.4). La zone d'atténuation accrue est, par exemple, un raccordement privé (3) pourvu d'une barre omnibus (4) où sont raccordées les différentes lignes client (4.1, 4.2, 4.3, 4.4), chaque ligne client passant par un fusible (6.1, 6.2, 6.3, 6.4) et un compteur de courant (7.1, 7.2, 7.3, 7.4). Dans le sens de transmission inverse, le signal de données haute fréquence est découplé avant les fusibles, conduit aux sorties du dispositif de dérivation, transmis individuellement ou sous forme de signal global à l'entrée du dispositif de dérivation et réinjecté dans le réseau par l'appareil de communication (10) après le raccordement privé.
EP01275046A 2001-12-11 2001-12-11 Transmission de donnees haute frequence Withdrawn EP1454423A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH2001/000707 WO2003055095A1 (fr) 2001-12-11 2001-12-11 Transmission de donnees haute frequence

Publications (1)

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EP1454423A1 true EP1454423A1 (fr) 2004-09-08

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EP01275046A Withdrawn EP1454423A1 (fr) 2001-12-11 2001-12-11 Transmission de donnees haute frequence

Country Status (3)

Country Link
EP (1) EP1454423A1 (fr)
AU (1) AU2002218101A1 (fr)
WO (1) WO2003055095A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001008321A1 (fr) * 1999-07-22 2001-02-01 Siemens Aktiengesellschaft Circuit adaptateur pour impedances caracteristiques

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Publication number Priority date Publication date Assignee Title
GB2315937B (en) * 1996-08-01 2000-09-06 Northern Telecom Ltd Communications transceiver
IL150830A0 (en) * 2000-01-20 2003-02-12 Current Tech Llc Method of isolating data in a power line communication network

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001008321A1 (fr) * 1999-07-22 2001-02-01 Siemens Aktiengesellschaft Circuit adaptateur pour impedances caracteristiques

Non-Patent Citations (1)

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Title
See also references of WO03055095A1 *

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AU2002218101A1 (en) 2003-07-09

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