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Signal mixer for multipath

A signal mixing and road-use technology, applied in simultaneous/sequential multi-TV signal transmission, image communication, TV, etc., can solve the problems of increasing the complexity of system transformation and cost, and achieve convenient installation and debugging, and reduce system Good structural composition and good frequency response

Inactive Publication Date: 2009-05-13
丹东华讯电子有限公司
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Problems solved by technology

From the technical problems existing in the structure of the existing EPON+EOC system described above, it can be known that the structure of the single-channel signal mixer and the auxiliary power supply for the EOC amplifier have increased the complexity of the system transformation to a considerable extent. From another point of view, the current state of technology also provides room for technical transformation for the integration and simplification of the EPON+EOC system

Method used

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  • Signal mixer for multipath
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Embodiment Construction

[0010] The circuit board of the multi-channel signal mixer disclosed in the application of the present invention is arranged in the waterproof shielding case 1 . That figure 2 In the composition of the circuit embodiment, the circuit structure of one-way to two-way mixed output is adopted, that is, a two-way distributor with IP DATA signals, a high-pass filter for two-way RFTV signals, and one way IP DATA is provided on its waterproof shielding shell 1. Signal input terminal DATA, two channels of TV signal input terminals TVin1, TVin2 and two channels of high-pass filter output terminals OUT1, OUT2, these connection terminals adopt F-type RF connectors for easy connection and setting, that is, terminal DATA is F1, terminal TVin1, TVin2 They are respectively F2 and F3, and terminals OUT1 and OUT2 are respectively F4 and F5. An overcurrent circuit is arranged in parallel with each high-pass filter, and a low-pass filter is respectively connected between the output ends of the ...

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Abstract

The invention relates to a signal mixer used in coaxial broad band system of CATV broad band dual-network EPON+EOC. The multi-path signal mixer technical solution uses a mix technical solution that internet signal with one path to multi-path and RFTV signal are mixed, namely, one path IP DATA signal is divided into multi-path pre-mix signal that is mixed with corresponding RFTV signal, at the same time, a bypass over-current circuit is set in parallel on RFTV signal high pass filter. The whole EPON+EOC system structure can be simplified efficiently, assistant power supply does not needed for EOC amplifier, the system structure is simplified, system cost is reduced, and the mixer has technical advantages in low insertion loss, good frequency response and high reflecting loss or the like.

Description

technical field [0001] The application of the present invention relates to a signal mixer for a CATV broadband two-way network EPON+EOC coaxial broadband system. Background technique [0002] As a signal mixer set in the emerging EPON+EOC system, its function is to mix and modulate RF TV signals and IP DATA signals and output them to the front end of the EOC amplifier, and then access user terminals, such as figure 1 shown. This technology solves the technical problems of complex installation and transformation structure, convergence interference and high transformation cost in the transformation of the existing cable TV broadband two-way network, and combines the advantages of the EOC system, that is, the switching chip in the EOC Isolate the noise interference at the user end, thereby improving the system signal level. However, in the existing system configuration, the signal mixer used is generally a single-channel output structure, that is, the signal mixer is connecte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/00H04N7/08H04N7/10
Inventor 潘振增
Owner 丹东华讯电子有限公司
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