EP0421174A2 - Dispositif de connection pour un réseau local - Google Patents

Dispositif de connection pour un réseau local Download PDF

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Publication number
EP0421174A2
EP0421174A2 EP90117793A EP90117793A EP0421174A2 EP 0421174 A2 EP0421174 A2 EP 0421174A2 EP 90117793 A EP90117793 A EP 90117793A EP 90117793 A EP90117793 A EP 90117793A EP 0421174 A2 EP0421174 A2 EP 0421174A2
Authority
EP
European Patent Office
Prior art keywords
connection
cable
connection device
computer
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Withdrawn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
EP90117793A
Other languages
German (de)
English (en)
Other versions
EP0421174A3 (en
Inventor
Franz Leinbach
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0421174A2 publication Critical patent/EP0421174A2/fr
Publication of EP0421174A3 publication Critical patent/EP0421174A3/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/719—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/04—Connectors or connections adapted for particular applications for network, e.g. LAN connectors

Definitions

  • the invention relates to a connection device for connecting a computer to a local network.
  • Local networks serve to connect independently working computers in such a way that they can share certain devices, for example hard disks, printers etc.
  • the physical coupling between the line implementing the network and the computer takes place within the computer on a network card or in an additional device which is attached directly to the rear of the computer is. The coupling can take place either via an active component, a transceiver with the Ethernet standard or else via passive circuits.
  • a connection device for a data network is already known (DE-U-89 08 236), in which a double coaxial cable is inserted into the network with the aid of a special connector in such a way that the previously continuous line and the line are separated during the insertion of the connector is now led over the two strands of the double cable.
  • switching operations are not particularly cheap in such data networks.
  • the cable can be pulled out again if the plug switches correctly, but damage to the cable can lead to a breakdown of the network.
  • the invention has for its object to provide a connection device in which the computer can be easily inserted into and removed from the network during operation.
  • connection device with the features of claim 1.
  • connection cable can be easily removed and reinserted.
  • connection element accommodated in the connection box establishes the connection to the connection for the computer on a continuous network line.
  • a failure of the connection element therefore affects at most the function of the connected computer, but not that of the network.
  • connection element proposed by the invention in the connection box can either be a transceiver, that is to say a circuit with active components, which can receive its power supply via the connection cable to the computer.
  • a relatively simple connection cable can be used, which contains four lines for the data and further lines for the power supply of the transceiver.
  • the connecting element may have a passive circuit which effects the coupling of the connecting cable and in this case the connecting cable is a cable with a defined impe danz or has such.
  • passive circuits are known per se. So far, however, they have always been attached directly to the back of the computer, since it has been assumed that the connecting cable should not be longer than about 20 cm.
  • the invention proposes that in a network of the "Apple Talk" type the connecting cable has two pairs of twisted pair cables. Each pair is used to transmit data signals in one direction. Every twisted pair cable has a precisely defined impedance. The use of these cables makes it possible for the first time to allow a distance of up to 2.50 m between the passive circuit and the computer.
  • the junction box proposed by the invention can be a surface-mounted box, a flush-mounted box for installation in conventional installation boxes or a flush-mounted box for installation in a cable duct.
  • the invention also proposes, in particular for use in open-plan offices, to design the junction box as a closed box which can be connected to the local network via a cable and which can then be used in the open-plan office, similarly to a multiple connector strip.
  • the junction box shown in FIGS. 1 to 3 for installation, for example, in a cable duct contains an aperture 1, which closes the junction box from the outside.
  • This can be attached to the cable duct using a frame arranged under the cover 1.
  • a circuit board 14 Protruding perpendicular to the plane of the frame, a circuit board 14 is fastened to the frame, on which the connecting element 3 is fastened.
  • the connecting element 3 serves both for connecting both strands of the line forming the local network and for establishing the connection to the computer.
  • two screw connections 12, each with three terminals that can be actuated by screws 4 are provided for the strands of the local network.
  • the terminating resistor can of course also be attached to the screw terminals 12.
  • a passive circuit is also fastened on the circuit board 14, which contains, inter alia, a shielded and encapsulated HF transmitter 13.
  • the lines 5 from the passive circuit to the connector 11 for the computer are led as wires from the circuit board to the connector 11.
  • the plug connector 11 for attaching the connecting cable leading to the computer is a so-called DB9 connector.
  • FIG. 4. 4 shows two continuous lines 6, 7, which form the actual local network.
  • the shielding line 8 is also drawn continuously.
  • a pair of lines is coupled to the data lines 6, 7 with the aid of the transformer 13, from each of which a line is branched off via a resistor.
  • the pin assignment of the DB9 connection is shown schematically at the bottom in FIG. Pins 4 and 5 are connected to the positive or negative TXD line, an abbreviation for transfer exchange data, that is, the data to be transferred from the computer to the network.
  • RXD arrive at pins 8 and 9 of the connector, an abbreviation for the expression Receive-Exchange-Data.
  • Fig. 5 shows the connection assignment of a connecting cable between the connector 11 and a mini-DIN8 connector on a computer.
  • This cable contains two pairs of twisted-pair cables, i.e. cables twisted around each other, which have a certain exactly maintained mutual impedance.
  • the data applied to the connector parts labeled 4 and 5 are combined to form a twisted pair, as are the two cables that serve the connector contacts 8 and 9.
  • the circuit shown in FIG. 4 is only able to bridge the length of up to 2.50 m required to connect a computer to an electrical outlet due to such a twisted pair cable.
  • 1 to 3 contains a passive circuit
  • an active circuit for example a transceiver. This receives its power supply via the connection cable to the computer, which in this case does not need to be a twisted pair cable.
  • the data lines 6, 7 of the local network are not interrupted by the circuit, but go through. This means that the two screw terminals 12 of the board 14 in Fig. 3 are connected.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
EP19900117793 1989-09-30 1990-09-15 Connecting device for a local area network Withdrawn EP0421174A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8911660U DE8911660U1 (de) 1989-09-30 1989-09-30 Anschlußdose für ein lokales Netzwerk
DE8911660U 1989-09-30

Publications (2)

Publication Number Publication Date
EP0421174A2 true EP0421174A2 (fr) 1991-04-10
EP0421174A3 EP0421174A3 (en) 1991-12-27

Family

ID=6843317

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900117793 Withdrawn EP0421174A3 (en) 1989-09-30 1990-09-15 Connecting device for a local area network

Country Status (2)

Country Link
EP (1) EP0421174A3 (fr)
DE (1) DE8911660U1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9207517U1 (de) * 1992-06-03 1992-08-06 Siemens AG, 8000 München Mosaikbaustein für eine Bedientafel
EP0525703A1 (fr) * 1991-08-01 1993-02-03 Siemens Aktiengesellschaft Connecteur pour réseau local
WO1993019500A1 (fr) * 1992-03-23 1993-09-30 Superior Modular Products, Inc. Systeme de connecteurs electriques a faible diaphonie
EP0583111A1 (fr) * 1992-08-06 1994-02-16 AT&T Corp. Fiche-rapportée pour réseaux d'interconnexion
WO1994006216A1 (fr) * 1992-09-04 1994-03-17 Pressac Limited Procede et dispositif de suppression des interferences dans des connecteurs de donnees
US5454738A (en) * 1993-10-05 1995-10-03 Thomas & Betts Corporation Electrical connector having reduced cross-talk
DE19534038A1 (de) * 1995-09-14 1997-03-20 Gaertner Karl Telegaertner Anschlußdose für ein Datennetz
US6231397B1 (en) 1998-04-16 2001-05-15 Thomas & Betts International, Inc. Crosstalk reducing electrical jack and plug connector
US6758698B1 (en) 1992-12-23 2004-07-06 Panduit Corp. Communication connector with capacitor label

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1010447A3 (fr) * 1996-08-01 1998-08-04 Gaertner Karl Telegaertner Boite de raccordement pour un reseau de donnees.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2600475B1 (fr) * 1986-06-20 1988-08-26 Alsthom Cgee Interface de liaison d'un appareillage a un cable coaxial et coupleur incorporant une telle interface
EP0289525A4 (fr) * 1986-08-22 1989-04-24 Farallon Computing Reseau local d'interconnexion de produits informatique via de longues lignes telephoniques.
US4761811A (en) * 1986-12-22 1988-08-02 Zetena Jr Maurice F Data and voice transmission using composite cables and punch-down blocks
US4904879A (en) * 1988-09-30 1990-02-27 Amp Incorporated Data current coupler and methods of making and assembling same
DE8908236U1 (de) * 1989-07-06 1989-08-31 "Telegärtner" Karl Gärtner, 71144 Steinenbronn Anschlußeinrichtung für ein Datennetz

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0525703A1 (fr) * 1991-08-01 1993-02-03 Siemens Aktiengesellschaft Connecteur pour réseau local
AU666932B2 (en) * 1992-03-23 1996-02-29 Superior Modular Products Incorporated Low cross talk electrical connector system
WO1993019500A1 (fr) * 1992-03-23 1993-09-30 Superior Modular Products, Inc. Systeme de connecteurs electriques a faible diaphonie
US5299956A (en) * 1992-03-23 1994-04-05 Superior Modular Products, Inc. Low cross talk electrical connector system
US5310363A (en) * 1992-03-23 1994-05-10 Superior Modular Products Incorporated Impedance matched reduced cross talk electrical connector system
DE9207517U1 (de) * 1992-06-03 1992-08-06 Siemens AG, 8000 München Mosaikbaustein für eine Bedientafel
EP0583111A1 (fr) * 1992-08-06 1994-02-16 AT&T Corp. Fiche-rapportée pour réseaux d'interconnexion
US5679027A (en) * 1992-09-04 1997-10-21 Pressac Ltd. Apparatus for crosstalk cancellation in data connectors
WO1994006216A1 (fr) * 1992-09-04 1994-03-17 Pressac Limited Procede et dispositif de suppression des interferences dans des connecteurs de donnees
US6758698B1 (en) 1992-12-23 2004-07-06 Panduit Corp. Communication connector with capacitor label
US5470244A (en) * 1993-10-05 1995-11-28 Thomas & Betts Corporation Electrical connector having reduced cross-talk
US5454738A (en) * 1993-10-05 1995-10-03 Thomas & Betts Corporation Electrical connector having reduced cross-talk
DE19534038A1 (de) * 1995-09-14 1997-03-20 Gaertner Karl Telegaertner Anschlußdose für ein Datennetz
DE19534038C2 (de) * 1995-09-14 1998-07-23 Gaertner Karl Telegaertner Anschlußdose für ein Datennetz
US6231397B1 (en) 1998-04-16 2001-05-15 Thomas & Betts International, Inc. Crosstalk reducing electrical jack and plug connector

Also Published As

Publication number Publication date
EP0421174A3 (en) 1991-12-27
DE8911660U1 (de) 1990-03-22

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