• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A cable television (CATV) distribution outlet device (10) is provided comprising a distribution outlet unit having a front section (14) with electrical circuits connected to a plurality of outlet ports (16) and a rear section. (12) connectable to a broadband network, wherein an amplifier unit (18) is disposed between the front section (14) and the rear section (12) and is in electrical communication with both the front section (14) ) than with the rear section (12). The amplifier unit (18) is a separate module and includes one or more amplifier circuits for upstream and / or downstream amplification of signals.
    公开号:BE1022344B1
    申请号:E2015/5076
    申请日:2015-02-11
    公开日:2016-05-26
    发明作者:Jan Ariesen；Gerrit Boskaljon
    申请人:Technetix B.V.；
    IPC主号:
    专利说明:

    Distribution socket device for cable television
    Field of the invention
    This invention relates to a cable television distribution socket device for use in distributing communication signals from a cable network to a number of network subscribers.
    Background to the invention
    Distribution outlets are used to connect a number of subscribers from an urban area to a cable television network (CATV). A CATV network consists of interconnected coaxial cables and components such as repeater amplifiers, signal splitters, signal mixers, distribution sockets, and other signal transport devices for performing two-way signal communication between a network provider based at a "head end" and a subscriber. Downstream signals from the provider to the subscriber are high frequency, typically in the frequency range 54 to 1,002 MHz with return, or upstream subscriber signals at the headend are in a non-overlapping frequency band, typically 5 to 42 MHz. In the CATV network, amplifiers and distribution sockets are positioned so that the amplifiers compensate the signal losses of the coaxial cable and the passive components such as sockets located along the cable channel. To increase the speed of signals anywhere in the network, the frequency range or bandwidth of the signals can be increased. However, as higher frequencies are sent over the coaxial cable, the component loss characteristics and insertion loss of the coaxial cable change, producing more signal loss or less signal gain at higher frequencies.
    To compensate for the increased loss, the spacing of amplifiers along the coaxial cable must be reduced. This greatly increases the manpower and costs to achieve this as the number of amplifiers needed throughout the network is increased. Summary of the invention
    According to a particular aspect of the present invention, there is provided a cable television distribution socket (CATV) apparatus comprising a distribution tap unit having a front section with electrical circuits connected to a plurality of tap ports and otherwise known in the art. as a front plate, and a rear section, conventionally known as a mounting box, connectable to a broadband network, wherein an amplifier unit is disposed between the front section and the rear section and is electrical communication with both the front section and the rear section. By having an amplifier unit disposed between the front plate and the mounting box, it is possible to modify the existing distribution taps to compensate for the signal losses at the higher frequencies required to increase the bandwidth. The amplifier unit is preferably a separate module that can be inserted between the front section and the rear section so that existing distribution plug units, whether in situ within a network or before installation, can be modified with the amplifier unit to compensate for the loss of signal. By having a separate amplifier module, the distribution socket units can be modified when necessary for a specific network installation, thus avoiding the need to fabricate custom tap-out units based on expected losses in a network. By having a separate amplifier module, the socket units can be modified as and when necessary to compensate for changes in loss characteristics in a network.
    Preferably the front section, the rear section and the amplifier unit are each separate modules. This allows them to be linked together selectively when necessary. By having an amplifier unit which is distinct and separable from the front section and the rear section, the signal response characteristics of the distribution plug unit can be easily modified by introducing the amplifier unit when it is necessary and routing signal transmission paths between a base and the front plate through the amplifier unit.
    Conventionally, the mounting box can be connected to a signal transfer cable, such as a coaxial cable forming the main cable of a network.
    The front section, the rear section and the amplifier unit may be provided with collaborative parts to help secure the three modules together. Preferably, the amplifier unit is formed with a cross-section complementary to the front and rear sections. This ensures that a dispensing plug device assembled with a front section, a rear section and the amplifier unit forms a composite whole. The amplifier unit may include amplification circuits for upstream and / or downstream amplification of signals. If necessary, an equalizer may be included inside the amplification circuit.
    If desired, amplification may be provided in the downstream path between the signal transmission path from the backplane to the forward section. If necessary, amplification may also be provided in the upstream signal communication path from the front section to the back section.
    According to another aspect of the invention, there is also provided an amplifier unit adapted to be fitted between a front section and a rear section of a dispensing unit, with preferred features as previously discussed.
    The invention will now be described by way of example and with reference to the accompanying drawings, in which: FIG. 1 is a perspective view of a dispensing plug device according to the present invention; Figure 2 is an exploded view of the dispensing plug device; Fig. 3 is a block diagram of electrical connections in a prior art distribution plug unit; Fig. 4 is a block diagram for showing electrical connections in the dispensing plug device shown in Figs. 1 and 2.
    Description
    Fig. 1 shows a dispensing plug device 10 which includes a rear section being a back plate or mounting box 12 connected to a front plate 14 having a plurality of distribution plugs 16, an amplifier collar 18 being disposed between the box 12 and the front plate 14 to provide additional signal amplification. When used in a CATV network, signals sent along a main cable 19 routed through the edit box 12 are accessed by users connected to the tap ports 16 through subscriber connections.
    The amplifier flange 18 is an aluminum shaped housing corresponding to the edge profile of the front plate 14 and fits inside the lip 20 formed by an edge of the mounting box 12. As will be seen in the exploded view of Figure 2, the flange amplifier unit 18 is provided with cylindrical sections within its walls positioned to correspond to the profiles in the front plate 14 and the base 12. This allows screws 22 to pass through the faceplate 14, the flange amplifier unit 18 and into the mounting box 12 to secure the three separate modules together. Conventionally, the mounting box and front plate modules are sold together as a distribution socket, usually an external socket, the amplifier unit 18 being additionally available when, for example, the network become such that signals can not be supported and further amplification is required. By having an independent amplifier unit that can be positioned between the front plate and the mounting box, the amplifier unit can be used to increase the signal level and allow signal transfer characteristics associated with a pickup unit. distribution to be upgraded as and when needed without the need to replace or relocate the forming unit.
    A diagram of electrical connections between a mounting box 12 'and a front plate 14' of a prior art forming unit is shown in Figs. 3 (a) and (b). A switch 33 is an optional feature that is not always provided in the mounting boxes. If the front plate and the mounting box are separate and unrelated as shown in Fig. 3 (a), the switch 33 is responsive to the attachment of the front plate 14 'to break the signal path between an input 30 and an output 32; the signal passing simply via the mounting box 12 'to the output connector 32.
    When the mounting box 12 'and the front plate 14' are connected together as in Fig. 3 (b), the signals pass from the input 30 to an internal connector 34 of the mounting box. A connector 36 of the front plate 14 'connects to the connector 34 and an output connector 38 of the front plate 14' connects to a second internal connector 40 of the mounting box 12 'to establish a signal communication path from the mounting box 12 'through the front plate 14' and back to the output 32 of the mounting box 12 '. The front plate 14 'includes electrical components such as capacitors 42, an inductance coil 48, a splitter 44 and a socket 46 leading to tap ports 16, the output 38 being connected to an internal connector 40 for output along of the main signal line attached to the mounting box 12 'at the output 32. As is well known in the art, such a distribution plug provides a bidirectional signal path allowing upstream and downstream signals to pass through. between a headend associated with a network provider and a subscriber.
    Fig. 4 shows an electrical schematic of the dispensing plug device of Figs. 1 and 2. An optional switch 33 is shown although the arrangement may be implemented without this feature. The amplifier unit 18 is positioned between the mounting box 12 and the front plate 14 so that electrical communication between the mounting box 12 and the front plate 14 is only possible via the intermediate amplifier module 18. The amplifier unit 18 is shown with a single amplifier circuit for the downstream signal. A diplexer filter 60 separates the downstream signal for amplification by an amplifier chip 62, the amplified signal being recombined with the rest of the signal by a second diplexer filter 64 before output. In a conventional manner, inductance coils 66, 66'will be included and if necessary an equalizer 68 may be included in the signal path from the amplifier chip 62 to the second diplexer filter 64.
    As an alternative, upstream signals may be amplified as shown by the dotted line 70. If desired, a second amplifier circuit may be provided between connectors 52 and 56 for downstream and / or upstream signals.
    The internal connectors 34, 40 of the mounting box 12 are electrically connected respectively to the connectors 50, 52 of the module 18, the signals being conveyed via amplifier circuits inside the module 18 before being passed to the front plate 14 by connectors 54, 56 respectively connecting to connectors 36, 38 front plate. In this way, a physically distinct amplifier module is provided that allows the amplification associated with the pick-up unit to be varied according to the signal transmission characteristics, and in particular signal noise, of a network. The amplifier module can be added in addition to existing tap modules to compensate for increased noise in networks as the bandwidth increases.
    权利要求:
    Claims (13)
    [1]
    A cable television distribution socket (CATV) apparatus comprising a distribution tap unit having a front section with electrical circuits connected to a plurality of tap ports and a back section connectable to a broadband network, wherein an amplifier unit is disposed between the front section and the rear section and is in electrical communication with both the front section and the rear section.
    [2]
    The cable television distribution socket (CATV) apparatus according to claim 1, wherein the amplifier unit is a separate module.
    [3]
    The cable television distribution socket (CATV) apparatus according to claim 1, wherein the front section, the rear section and the amplifier unit are each separate modules.
    [4]
    The cable television distribution socket (CATV) apparatus according to any one of the preceding claims, wherein the rear section can be connected to a signal transfer cable.
    [5]
    Cable television distribution socket (CATV) apparatus according to any one of the preceding claims, wherein the front section, the rear section and the amplifier unit are provided with collaborative parts.
    [6]
    The cable television distribution socket (CATV) apparatus according to any one of the preceding claims, wherein the amplifier unit is formed with a cross-section complementary to the front and rear sections.
    [7]
    The cable television distribution socket (CATV) apparatus according to any one of the preceding claims, wherein the amplifier unit comprises one or more amplification circuits for the upstream and / or downstream amplification of signals.
    [8]
    The cable television distribution socket (CATV) apparatus according to claim 7, wherein an equalizer is included in the amplification circuit.
    [9]
    An amplifier unit adapted to be fitted between and in electrical communication with both a front section and a rear section of a distribution tap unit, the front section having electrical circuits connected to a plurality of tap ports and the rear section can be connected to a broadband network.
    [10]
    An amplifier unit according to claim 9, further comprising portions adapted to cooperate with portions on a dispensing tap unit.
    [11]
    An amplifier unit according to claim 9 or claim 10, wherein the amplifier unit is formed with a cross-section complementary to the front and rear sections.
    [12]
    An amplifier unit according to claim 9, claim 10 or claim 11, further comprising one or more amplification circuits for upstream and / or downstream amplification of signals.
    [13]
    The amplifier unit of claim 12, wherein an equalizer is included within the amplification circuit.
    类似技术:
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    同族专利:
    公开号 | 公开日
    GB2523165A|2015-08-19|
    GB2523165B|2018-09-26|
    GB201402729D0|2014-04-02|
    US20150236460A1|2015-08-20|
    US9923319B2|2018-03-20|
    引用文献:
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    法律状态:
    2021-10-27| MM| Lapsed because of non-payment of the annual fee|Effective date: 20210228 |
    优先权:
    申请号 | 申请日 | 专利标题
    GB1402729.6A|GB2523165B|2014-02-17|2014-02-17|Cable television cable tap device|
    GB1402729.6|2014-02-17|
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