WO2002082682A1 - Systeme de transmission d'informations a hauts debits vers un terminal numerique - Google Patents
Systeme de transmission d'informations a hauts debits vers un terminal numerique Download PDFInfo
- Publication number
- WO2002082682A1 WO2002082682A1 PCT/FR2002/001128 FR0201128W WO02082682A1 WO 2002082682 A1 WO2002082682 A1 WO 2002082682A1 FR 0201128 W FR0201128 W FR 0201128W WO 02082682 A1 WO02082682 A1 WO 02082682A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrical network
- passive
- information
- xdsl
- low voltage
- Prior art date
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
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
- H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data
-
- 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
- H04B2203/5437—Wired telephone
-
- 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
-
- 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 present invention relates to a system for transmitting information at high speed to a digital terminal.
- the invention finds an advantageous application in the field of high-speed information transmission on the terminal part of the subscriber line and via the subscriber's low-voltage electrical network.
- Information systems are currently known for transmitting on a subscriber terminal link via the subscriber's low voltage electrical network, but these require the processing of the information to be transmitted.
- This processing of information is carried out by the installation of two modem type devices.
- One of the modem devices is located at the entrance to the subscriber's electrical network, near the reception of information.
- Another modem device is arranged at the entrance to the terminal used by the subscriber to process the information transmitted.
- These so-called modem devices carry out a so-called "PLT" ("Power Une Telecommunications" or telecommunications over an electrical line) modulation upon receipt of the information, then a PLT demodulation of the said information after passing over the subscriber's electrical network.
- PLT Power Une Telecommunications
- the technical problem to be solved by the object of the present invention is to propose a system for transmitting information at high throughput, which overcomes the drawbacks of existing systems by allowing the subscriber to connect to a low voltage electrical network and avoiding the installation of expensive devices on said subscriber's electrical network.
- the solution to the technical problem posed consists, according to the present invention, in that said transmission system comprises at least passive means of adaptation between an xDSL link for transmitting high speed information and a low voltage electrical network, on which at least said digital subscriber terminal is connected.
- the high speed information transmission system avoids the installation of said PLT modem devices, which have hitherto been necessary for the transmission of information over a low voltage electrical network.
- PLT specific modulation and demodulation are no longer used for the transport of said information over the low voltage electricity network.
- Said passive adaptation means replace the PLT modem devices used in existing transmission systems
- xDSL The xDSL technology (acronym for Digital Subscriber one, generic abbreviation for digital subscriber lines) is a solution for transmitting high-speed information over a digital subscriber line.
- xDSL designates all the technological families, such as for example the VDSL, HDSL, SDSL, ADSL, ADSL-lite techniques.
- XDSL transmissions are based on the combination of powerful modulation, coding, multiplexing, error correction and filtering techniques.
- This xDSL technology makes it possible to transmit various high-speed services over the subscriber line, for example services on sites connected to the Internet, telephone conversation services via the Internet (services known as "Voice over IP or VoIP"). "), interactive video on demand transmission services (so-called” VoD "services).
- An xDSL connection consists of a modem device installed in the distribution network of telecommunications services. This first modem device performs, in the network, the modulation for the xDSL link. Another xDSL modem device is installed in the subscriber's installation. This second modem device performs demodulation to a digital subscriber terminal. It allows the subscriber to access the various broadband services.
- said passive adaptation means are arranged, on the one hand, at the entrance to the low voltage electrical network and, on the other hand, at the entrance to said digital terminal.
- said transmission system allows the use of a low voltage electrical network, generally existing inside all constructions, with numerous access points in the premises. This makes it possible to reach all of the potential users of telecommunications services. This also allows the subscriber to freely connect to any point of the low voltage electrical network, thanks to standard electrical outlets, avoiding special wiring for the transmission of said telecommunications services.
- said high speed information transmission system according to the invention is capable of transporting xDSL modulation over the low voltage electrical network to the digital terminal, thanks to said passive adaptation means.
- said high speed information transmission system is capable of directly transmitting said information, thanks to said passive adaptation means.
- said passive means of adapting the system are each a passive assembly, without active component. This passive assembly, which does not process any information, also explains the compatibility with all xDSL technologies.
- Said passive adaptation device associated with said transmission system comprises at least low frequency filtering means on the low voltage electrical network and an isolation means between the low voltage electrical network and the xDSL link.
- said passive adaptation device according to the invention is of very simple design. It therefore represents only a low cost, unlike PLT modem devices. In this way, a large number of subscribers access broadband services, for example services on the Internet, hitherto reserved for subscribers with expensive devices PLT modem or special cabling for the transmission of said telecommunications services.
- Figure 1 is an overall diagram of a transmission system according to the invention.
- FIG. 2 shows the detailed diagram of a passive adaptation device.
- a subscriber wishing to access services requiring the transmission of high speed information, is connected to a link 1 of xDSL type. As indicated above, this link transmits information modulated by the telecommunications service distributor.
- a separator filter 22 which separates the voice signals and the information modulated in xDSL.
- a passive adaptation device 10 is arranged on the modulated link 1 xDSL after the separator filter 22, upon receipt of the information to be transmitted.
- said information transported over the electricity network is still modulated in xDSL.
- the information to be transmitted is processed by so-called PLT modem devices, which modulate and demodulate said information so as to differentiate it from the electrical signal.
- PLT modem devices which modulate and demodulate said information so as to differentiate it from the electrical signal.
- This requires demodulation xDSL upon receipt of said information, so as to change modulation / demodulation using the specific PLT technology for transport on low voltage electrical network.
- Said passive adaptation device 10 is either a small box added in the installation, or is incorporated in the separator filter 22. This latter solution is easily carried out taking into account the simplicity of said passive adaptation device 10, which is described detailed in Figure 2.
- the connection of the passive adaptation device 10 with the subscriber's electrical network is made using a standard electrical outlet.
- the passive adaptation device 10 is connected to the subscriber's electrical network on any standard electrical outlet.
- the passive adaptation device 10 ′ is identical in all respects to the passive adaptation device 10 set up at the arrival of the xDSL modulated link 1.
- Said passive adaptation device 10 ′ is arranged before the xDSL modem device 23.
- This xDSL modem device 23 demodulates the information transmitted.
- said passive adaptation device 10 ′ is either a small box added in the installation, or is incorporated in the device 23 xDSL modem. Said passive adaptation devices 10, 10 'being identical and very simple, once again, this latter solution is easily implemented.
- the digital subscriber terminal is for example a PC type terminal or else a digital TV decoder or any other suitable digital terminal.
- said passive adaptation device 10, 10 ′ which isolates from the electrical signal both the separator filter 22 and therefore the telephone line with the telephone set 21, as well as the xDSL modem device 23, while letting through the modulated information for high speed xDSL transmission.
- the two passive adaptation devices 10, 10 ′ are identical at the input of the low-voltage electrical network 2 and towards the subscriber digital terminal 30.
- the filtering means C1, C2 of said passive adaptation device 10, 10 ′ are two capacitors C1, C2 which eliminate the low frequencies from the electrical network. These two capacitors let pass the information to be transmitted, modulated in xDSL at higher frequencies.
- the isolation means TR is a transformer allowing the impedance adaptation between the low voltage electrical network 2 and the modulated link 1 xDSL.
- the limiting means DZ1, DZ2 are two Zener diodes eliminating all the noise peak signals above the threshold level of said Zener diodes. These noise peak signals, called transient signals, are conventionally encountered on an electrical network.
- the adaptation means C3 is a capacitor allowing the impedance adaptation between the modulated link 1 xDSL and the telephone set 21. If no telephone set 21 is used to establish voice communications, the capacitor C3 is removed from said devices passive 10, 10 'adaptation.
- said adaptation device 10, 10 ' is a passive assembly, without active component. The latter does not process the information to be transmitted.
- said passive adaptation device 10, 10 ′ does not add any error in the xDSL transmission and it provides little attenuation on the level of information to be transmitted.
- the simplicity of the assembly and the small number of components contained in said passive devices 10 and 10 ′ of adaptation allow them easily to be installed either in the separator filter 22 on reception of the information, or in the device 23 modem xDSL to subscriber digital terminal 30.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Telephonic Communication Services (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/473,622 US20040105539A1 (en) | 2001-04-05 | 2002-04-02 | High-speed data transmission system to a digital terminal |
EP02759808A EP1374437A1 (fr) | 2001-04-05 | 2002-04-02 | Systeme de transmission d'informations a hauts debits vers un terminal numerique |
JP2002580517A JP2004533747A (ja) | 2001-04-05 | 2002-04-02 | デジタル端末に向けた高速情報伝送システム |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR01/04762 | 2001-04-05 | ||
FR0104762A FR2823406B1 (fr) | 2001-04-05 | 2001-04-05 | Systeme de transmission d'informations a hauts debits vers un terminal numerique |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002082682A1 true WO2002082682A1 (fr) | 2002-10-17 |
Family
ID=8862077
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2002/001128 WO2002082682A1 (fr) | 2001-04-05 | 2002-04-02 | Systeme de transmission d'informations a hauts debits vers un terminal numerique |
Country Status (6)
Country | Link |
---|---|
US (1) | US20040105539A1 (fr) |
EP (1) | EP1374437A1 (fr) |
JP (1) | JP2004533747A (fr) |
CN (1) | CN1502178A (fr) |
FR (1) | FR2823406B1 (fr) |
WO (1) | WO2002082682A1 (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6480510B1 (en) | 1998-07-28 | 2002-11-12 | Serconet Ltd. | Local area network of serial intelligent cells |
US6549616B1 (en) | 2000-03-20 | 2003-04-15 | Serconet Ltd. | Telephone outlet for implementing a local area network over telephone lines and a local area network using such outlets |
US6842459B1 (en) | 2000-04-19 | 2005-01-11 | Serconet Ltd. | Network combining wired and non-wired segments |
IL152824A (en) | 2002-11-13 | 2012-05-31 | Mosaid Technologies Inc | A socket that can be connected to and the network that uses it |
IL159838A0 (en) | 2004-01-13 | 2004-06-20 | Yehuda Binder | Information device |
IL160417A (en) | 2004-02-16 | 2011-04-28 | Mosaid Technologies Inc | Unit added to the outlet |
US7873058B2 (en) | 2004-11-08 | 2011-01-18 | Mosaid Technologies Incorporated | Outlet with analog signal adapter, a method for use thereof and a network using said outlet |
FI118840B (fi) * | 2005-07-18 | 2008-03-31 | Abb Oy | Laitteisto tiedonsiirron järjestämiseksi |
FR2913165A1 (fr) * | 2007-02-26 | 2008-08-29 | France Telecom | Dispositif de reinjection de signaux a basses frequences entre un modem d'un usager et une installation telephonique de l'usager |
DE102016219080A1 (de) | 2016-09-30 | 2018-04-05 | Evonik Degussa Gmbh | Polyamidpulver für selektive Sinterverfahren |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5625863A (en) * | 1989-04-28 | 1997-04-29 | Videocom, Inc. | Video distribution system using in-wall wiring |
WO1999025098A1 (fr) * | 1997-11-10 | 1999-05-20 | Ameritech Corporation | Systeme et procede de distribution de donnees et d'informations vocales sur des reseaux sans fil et des reseaux cables |
WO1999052286A1 (fr) * | 1998-04-07 | 1999-10-14 | Alcatel Usa Sourcing, L.P. | Systeme d'abonne servant d'interface interactive pour de l'information radiodiffusee |
EP0975097A2 (fr) * | 1998-07-23 | 2000-01-26 | Alcatel | Procédé et appareil pour l'échange de données bidirectionnel sur des lignes d'alimentation à moyenne et basse tension |
US6040759A (en) * | 1998-02-17 | 2000-03-21 | Sanderson; Lelon Wayne | Communication system for providing broadband data services using a high-voltage cable of a power system |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4142178A (en) * | 1977-04-25 | 1979-02-27 | Westinghouse Electric Corp. | High voltage signal coupler for a distribution network power line carrier communication system |
US5111497A (en) * | 1990-09-17 | 1992-05-05 | Raychem Corporation | Alarm and test system for a digital added main line |
FR2737623A1 (fr) * | 1995-08-02 | 1997-02-07 | Philips Electronics Nv | Systeme de telecommunication au travers de lignes d'alimentation d'energie |
US5777769A (en) * | 1995-12-28 | 1998-07-07 | Lucent Technologies Inc. | Device and method for providing high speed data transfer through a drop line of a power line carrier communication system |
US6724890B1 (en) * | 1998-11-24 | 2004-04-20 | Premisenet Incorporated | Adaptive transmission line impedance matching device and method |
FR2797131B1 (fr) * | 1999-07-29 | 2004-02-20 | Kurtosis Ingenierie | Procede de distribution d'informations |
US6492897B1 (en) * | 2000-08-04 | 2002-12-10 | Richard A. Mowery, Jr. | System for coupling wireless signals to and from a power transmission line communication system |
-
2001
- 2001-04-05 FR FR0104762A patent/FR2823406B1/fr not_active Expired - Fee Related
-
2002
- 2002-04-02 US US10/473,622 patent/US20040105539A1/en not_active Abandoned
- 2002-04-02 JP JP2002580517A patent/JP2004533747A/ja not_active Abandoned
- 2002-04-02 EP EP02759808A patent/EP1374437A1/fr not_active Withdrawn
- 2002-04-02 WO PCT/FR2002/001128 patent/WO2002082682A1/fr active Application Filing
- 2002-04-02 CN CNA028075609A patent/CN1502178A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5625863A (en) * | 1989-04-28 | 1997-04-29 | Videocom, Inc. | Video distribution system using in-wall wiring |
WO1999025098A1 (fr) * | 1997-11-10 | 1999-05-20 | Ameritech Corporation | Systeme et procede de distribution de donnees et d'informations vocales sur des reseaux sans fil et des reseaux cables |
US6040759A (en) * | 1998-02-17 | 2000-03-21 | Sanderson; Lelon Wayne | Communication system for providing broadband data services using a high-voltage cable of a power system |
WO1999052286A1 (fr) * | 1998-04-07 | 1999-10-14 | Alcatel Usa Sourcing, L.P. | Systeme d'abonne servant d'interface interactive pour de l'information radiodiffusee |
EP0975097A2 (fr) * | 1998-07-23 | 2000-01-26 | Alcatel | Procédé et appareil pour l'échange de données bidirectionnel sur des lignes d'alimentation à moyenne et basse tension |
Also Published As
Publication number | Publication date |
---|---|
JP2004533747A (ja) | 2004-11-04 |
FR2823406B1 (fr) | 2005-05-13 |
FR2823406A1 (fr) | 2002-10-11 |
US20040105539A1 (en) | 2004-06-03 |
EP1374437A1 (fr) | 2004-01-02 |
CN1502178A (zh) | 2004-06-02 |
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