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WO1993005550A1 - Module supplementaire pour reseau cable dote d'au moins un boitier de sortie et son procede d'insertion - Google Patents

Module supplementaire pour reseau cable dote d'au moins un boitier de sortie et son procede d'insertion Download PDF

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Publication number
WO1993005550A1
WO1993005550A1 PCT/BE1992/000039 BE9200039W WO9305550A1 WO 1993005550 A1 WO1993005550 A1 WO 1993005550A1 BE 9200039 W BE9200039 W BE 9200039W WO 9305550 A1 WO9305550 A1 WO 9305550A1
Authority
WO
WIPO (PCT)
Prior art keywords
module
connector
cable
tap box
housing
Prior art date
Application number
PCT/BE1992/000039
Other languages
English (en)
Inventor
Frank Loosen
Eugène ADRIAENSENS
Original Assignee
Zuivere Interkommunale Voor Teledistributie Van Het Gewest Antwerpen 'integan' Coöperatieve Vennootschap
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 Zuivere Interkommunale Voor Teledistributie Van Het Gewest Antwerpen 'integan' Coöperatieve Vennootschap filed Critical Zuivere Interkommunale Voor Teledistributie Van Het Gewest Antwerpen 'integan' Coöperatieve Vennootschap
Publication of WO1993005550A1 publication Critical patent/WO1993005550A1/fr

Links

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
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
    • H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
    • H01R24/42—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency comprising impedance matching means or electrical components, e.g. filters or switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
    • H01R9/0509—Tapping connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable
    • H04N7/102—Circuits therefor, e.g. noise reducers, equalisers, amplifiers
    • H04N7/104—Switchers or splitters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2103/00—Two poles

Definitions

  • This invention relates to a method for inserting an additional module with at least an intensity equalizing function (“line equalizer”) in a cable network provided with at least one tap box, in particular in a cable television and/or cable radio network, which tap box is attached for example against an outer wall of a building, in a shaft or in a distribution box and provided with at least a first and a second connector connected both to a cable of said cable network.
  • line equalizer intensity equalizing function
  • tilt indicates here the difference in intensity level between the signals modulated on a carrier wave of a higher frequency and the signals modulated on a carrier wave of a lower frequency.
  • an additional module with an intensity equalizing function is taken up in the cable network.
  • such additional modules are inserted in the cable itself.
  • a drawback of this known method is that the cable has to be cut through and that the cable structure is changed therefore. Inserting such a module in a cable results in the formation of two additional reflection points, namely at the two connections of the cable to the module. Such reflection points have a negative influence on the quality of the signals transmitted through the cable.
  • a further drawback of this known method in particular when the cable is fixed for example against an outer wall of a building, is that the additional module has also to be fixed against this wall which involves additional difficulties; on the one hand, it is for example necessary to inform the owner of the house in advance about the intended works, which works can, on the other hand, also cause damages.
  • An object of the present invention is to provide a method which offers a solution for the hereabove mentioned problems and which allows therefore to insert an additional module in a simple way, in a cable network without having to cut the cable through.
  • the cable connected to one of said first and second connectors of the tap box is disconnected therefrom and connected to a third connector of the module, and a fourth connector of the module is connected to a free connector of the tap box, in particular onto the connector of the tap box which became free, by attaching this module at said free connector to the tap box.
  • this method according to the invention use is therefore made of a module which is provided to be fixed onto the tap box in such a manner that this module can be inserted easily in the cable network without any necessity to drill for example holes for attaching this module.
  • the present invention relates also to a module to be used in a method according to the invention, which module comprises electronic components with at least an intensity equalizing function (“line equalizer”) , characterized in that said components are contained in a housing provided with first attachment means for attaching the module onto said tap box.
  • line equalizer intensity equalizing function
  • This module can be fixed easily onto a tap box of a cable network without having to drill holes for example.
  • said first attachment means belong to said fourth connector and are provided to be attached onto said free connector of said tap box.
  • Figure 1 shows schematically a row of buildings against which a cable and tap boxes of a cable network are attached;
  • Figures 2 and 3 show a spectrum of signals travelling through the cable, respectively at the beginning and at the end of the row of buildings of Figure 1, and modulated on carrier waves of different frequencies;
  • Figure 4 shows in the same way as Figure 3 the intensity of a number of signals travelling through the cable at the end of the row of buildings of Figure 1, and modulated on carrier waves of different frequencies, an additional module with an intensity equalizing function (“line equalizer") being, however, inserted in the cable network against this row of buildings;
  • Figure 5 shows a diagram of the electronic components of the additional module;
  • Figure 6 shows schematically a tap box and an additional module fixed thereon according to the invention
  • Figure 7 shows, on a larger scale, a side elevational view of an example of the module according to the invention.
  • Figure 1 shows a row of buildings 1 provided with a cable network, for example a cable television and/or cable radio network.
  • the cable network comprises a cable 3 fixed against the outer walls 2 of these buildings and tap boxes 4.
  • the cable network has a tree structure according to which the cable (stem) splits up at the tap box into a number of branches.
  • the spectrum of signals transmitted through the cable 3 at the beginning of the row of buildings 1 sometimes shows after having travelled a certain distance too much "tilt", for example due to the connection of additional subscribers or due to an extension of the cable 3, which may cause disturbances in the radio or TV signal.
  • Figure 2 shows the intensities I (vertical axis) of a series of antenna signals each modulated on a carrier wave of a different frequency f (horizontal axis) . These carrier waves are indicated by means of vertical lines (f.., f 2 , ... f n ) .
  • the signals shown in this figure form a spectrum with little "tilt” such as for example near the main station or at the outlet of an amplifier box taken up in the network.
  • Figure 3 shows the intensities I of the same signals as those in Figure 2 but which have travelled a certain distance through the cable, such as for example at the end of the row of buildings 1.
  • FIG. 5 shows an electronic diagram of such an additional module 5.
  • the electronic components of this module 5 comprise a "line equalizer” 20 which compensates for the excessive "tilt” and which is known per se. Further they comprise moreover an alternating current by-pass provided with a coil 21 which transmits the supply current for example for the following amplifiers.
  • a duplex filter 22, 23 can further be provided in the module 5 on both sides of the "line equalizer" 20 for maintaining the possibility of a two way network, notwithstanding the presence of the line equalizer 20.
  • the present invention relates now to a method which allows to insert easily and quickly an additional module 5 as represented in Figure 5 in the cable network without having cut the cable through and without having to drill further holes in the outer wall.
  • the module 5 is no longer fixed against the wall but it is fixed, according to the invention, onto the tap box 4.
  • the tap box 4 is screwed for example by means of screws applied in holes 6 against an outer wall of a building (see Figure 6) .
  • the tap box 4 shown in Figure 6 is provided with a first 7 and a second connector 8 for the cable 3 and with further connectors 9 for branching cables 10 leading to the subscribers.
  • the cable 3 is disconnected for example from the second connector 8 and the disconnected extremity of the cable 3 is connected to a third connector 11 of the module 5.
  • This module 5 is further provided with a fourth connector 12 which is connected to a free connector 8 of the tap box 4.
  • This free connector 8 does not always have to be the just disconnected connector but can be formed possibly by a further connector 9.
  • a module 5 provided for being attached onto the tap box 4 so that inserting such a module 5 can be done easily and quickly without having to drill additional holes.
  • the module 5 according to the invention is provided with first attachment means for fixing this module 5 onto the tap box 4.
  • FIG. 7 shows a module 5 according to the invention.
  • This module 5 comprises an elongated housing 13 of a substantially hexagonal prismatic shape, the third 11 and the fourth connector 12 of this module 5 being each provided on an extremity of this housing 13.
  • the hexagonal shape of the housing offers the advantage that it is suited in this way for the use of a spanner which is used during the assembling for screwing the module onto the tap box.
  • the connector 11 is provided with a contact sleeve which has not been shown in the figures and which fits with pressure onto the contact pin of the free cable extremity.
  • the fourth connector 12 comprises a contact pin 14 which fits with pressure in a not represented contact sleeve of the free connector 8 of the tap box 4.
  • This fourth connector 12 is adapted to be fixed onto the free connector 8 of the tap box 4 in such a manner that by attaching the module 5, it is connected at the same time electrically to the tap box 4.
  • a number of variant embodiments of the module 5 and in particular of the connectors of this module 5 can be considered.
  • a first, preferably used embodiment is represented in Figure 7.
  • the connector 12 forms in this embodiment a rigid unit with the housing 13 and is provided with an outer thread 15 adapted to a not represented inner thread provided in said free connector 8 of said tap box 4.
  • the third connector 11 of the module 5 is in this case preferably provided with a nut 16 which can be rotated freely with respect to the housing 13 and which is adapted to be screwed onto a not represented thread provided on the disconnected cable 3.
  • This rotatable nut 16 allows to screw the disconnected cable 3 in a simple way to the module 5, even when this module 5 has been screwed already first also in a simple way onto the tap box 4.
  • Between the nut 16 and the housing 13 there is provided a seal ring 17.
  • Such a seal ring 18 is also provided on the fourth connector 12 of the module 5.
  • the fourth connector 12 of the module 5 provided with an inner thread adapted to an in this case outer thread provided on said free connector 8 of said tap box 4.
  • the third connector 11 of the module 5 is preferably also provided with an outer thread over which the disconnected cable 3, in particular a nut which is preferably applied on the extremity of this cable 3, can be screwed.
  • the screw axis of the thread 15 provided onto the module 5 coincides preferably with the longitudinal axis of the housing 13, which simplifies considerably the step of screwing the module 5 onto the tap box.
  • a nut which can be rotated freely with respect to the housing 13 and which is provided with an inner thread is provided on the fourth connector 12 of the module 5, which nut is adapted to be screwed onto a thread provided on said free connector 8 of the tap box.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Systems (AREA)

Abstract

Une méthode permet d'insérer un module supplémentaire (5), assurant au moins une fonction d'égalisation d'intensité, dans un réseau câblé doté d'au moins un boîtier de sortie (4) qui comprend au moins deux connecteurs (7, 8) pour câble (3). Ce câble (3) est débranché de l'un des deux connecteurs (7, 8) puis rebranché à un troisième connecteur (11) du module (5). Sur ce dernier, un quatrième connecteur (12) est branché sur un connecteur libre (8) du boîtier de sortie (4). L'invention porte aussi sur un module à utiliser avec ce procédé.
PCT/BE1992/000039 1991-09-04 1992-09-04 Module supplementaire pour reseau cable dote d'au moins un boitier de sortie et son procede d'insertion WO1993005550A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE09100825 1991-09-04
BE9100825A BE1005305A3 (nl) 1991-09-04 1991-09-04 Werkwijze voor het in een van ten minste een aftakdoos voorzien kabelnet aanbrengen van een bijkomende module en daarbij te gebruiken module.

Publications (1)

Publication Number Publication Date
WO1993005550A1 true WO1993005550A1 (fr) 1993-03-18

Family

ID=3885687

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BE1992/000039 WO1993005550A1 (fr) 1991-09-04 1992-09-04 Module supplementaire pour reseau cable dote d'au moins un boitier de sortie et son procede d'insertion

Country Status (2)

Country Link
BE (1) BE1005305A3 (fr)
WO (1) WO1993005550A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996010853A1 (fr) * 1994-10-03 1996-04-11 Walter Rose Gmbh & Co. Kg Prise de television par cable
US7656955B2 (en) * 2001-07-13 2010-02-02 Vierling Communications Gmbh Device for improving the transmission properties of a bundle of electrical data lines and a system for transmitting data

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1947330A1 (de) * 1969-09-18 1972-02-17 Siemens Ag Einrichtung zum wahlweisen Anschluss elektrischer Schaltungen
DE2357922A1 (de) * 1973-11-20 1975-05-22 Gilbert Engineering Co Kabel-anschlussvorrichtung
US4676569A (en) * 1985-11-20 1987-06-30 Lambert Harry S Protective cover for cable television distribution taps

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1947330A1 (de) * 1969-09-18 1972-02-17 Siemens Ag Einrichtung zum wahlweisen Anschluss elektrischer Schaltungen
DE2357922A1 (de) * 1973-11-20 1975-05-22 Gilbert Engineering Co Kabel-anschlussvorrichtung
US4676569A (en) * 1985-11-20 1987-06-30 Lambert Harry S Protective cover for cable television distribution taps

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996010853A1 (fr) * 1994-10-03 1996-04-11 Walter Rose Gmbh & Co. Kg Prise de television par cable
US7656955B2 (en) * 2001-07-13 2010-02-02 Vierling Communications Gmbh Device for improving the transmission properties of a bundle of electrical data lines and a system for transmitting data

Also Published As

Publication number Publication date
BE1005305A3 (nl) 1993-06-22

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