Wired television distributed concentrator
A technology of cable TV and hub, applied in the direction of cable transmission adaptation, etc., to achieve the effect of low cost, convenient upgrade and maintenance, and excellent electrical performance.
Inactive Publication Date: 2011-06-08
成都康特电子高新科技有限责任公司
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Problems solved by technology
[0002] At present, active and passive centralized distributors in HFC network equipment cannot simply realize the function of user port bandwidth limitation
Method used
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[0008] The present invention will be further elaborated below in conjunction with the accompanying drawings.
[0009] Such as figure 1 , a cable television distribution hub, its input port is sequentially connected through the radio frequency distribution unit, the user control matrix unit and the user port, the radio frequency distribution unit is an input terminal, and at least two output branch distributors, each output At least two channel bandwidth limiting units are connected in series on the branch to form a user control unit matrix. The channel bandwidth limiting unit is composed of magnetic induction coils B1 and B2 connected between the input and output terminals, a switch K connected with one end of the magnetic induction coils B1 and B2, and a filter G connected with the other end of the switch K.
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The invention discloses a wired television distributed concentrator. In the wired television distributed concentrator, an input port is connected with a user port sequentially through a radio frequency distributing module and a user control unit matrix; the radio frequency distributing module is a distributor which is provided with one input end and at least two output branch circuits; each output branch circuit is connected in series with at least two passage bandwidth limiting units to form the user control unit matrix; each passage bandwidth limiting unit consists of magnetic induction coils B1 and B2, a switch K and a filter G; the magnetic induction coils B1 and B2 are connected between an input end and an output end; the switch K is connected with one end of the magnetic inducting coils B1 and B2; and the other end of the switch K is connected with the filter G. The wired television distributed concentrator has the advantages that: the bandwidth of a user radio frequency port is limited simply and practicably, so that uplink collection noise of a double-way high performance computing (HPC) network can be effectively reduced; a design method is unique and electrical index performance is excellent; and due to modularized design, the wired television distributed concentrator is convenient to update and maintain and has low cost.
Description
technical field [0001] The invention relates to cable television, in particular to a centralized distributor for cable television. Background technique [0002] At present, the active and passive centralized distributors in the HFC network equipment cannot simply realize the function of user port bandwidth limitation. Contents of the invention [0003] The purpose of the present invention is to provide a simple structure, low cost and excellent performance cable TV convergence and distribution hub with the function of limiting the user port bandwidth. [0004] In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions: [0005] A cable television distribution hub, the input ports are sequentially connected through a radio frequency distribution unit, a user control matrix unit and a user port, the radio frequency distribution unit is an input terminal, and at least two output branch distributors are connected i...
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Inventor 龙永庆余波青晓英杜泽永孙贤勇
Owner 成都康特电子高新科技有限责任公司