Multisystem digital television signal front end processing device and digital television broadcasting system

A digital TV signal and front-end processing technology, which is applied in the scanning details of the TV system, TV system components, TV, etc., can solve problems such as incompatibility with satellite TV systems, and achieve the effects of low cost, flexible configuration, and cost reduction

Inactive Publication Date: 2009-12-30
SHANGHAI XINGYUE INFORMATION TECH
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Problems solved by technology

[0005] The purpose of the present invention is to solve the above problems. It provides a multi-standard digital TV signal front-end processing device, which truly realizes that the whole process from transmission to decoding is a digital signal, and solves the problem that the digital TV cannot be compatible with the original satellite after upgrading the digital TV. TV system problem
[0006] Anothe

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  • Multisystem digital television signal front end processing device and digital television broadcasting system
  • Multisystem digital television signal front end processing device and digital television broadcasting system
  • Multisystem digital television signal front end processing device and digital television broadcasting system

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Embodiment Construction

[0075] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0076] image 3 The structure of the preferred embodiment of the all-digital digital TV broadcasting system of the present invention is shown. See image 3 , the all-digital digital TV playback system includes: a multi-standard digital TV signal front-end processing device 2 located at the front end (hotel computer room), a mixer 3 and multiple digital TV integrated machines 4 located at the terminal. The multi-standard digital TV signal front-end processing device 2 is a multi-standard multi-encryption digital TV signal front-end processing device. Existing digital TV signals include DVB-S, DVB-C, and DMB-TH three systems. The multi-standard digital TV signal front-end processing device 2 includes a DVB-S front-end decryption module 20, a DVB-C front-end decryption module 22, a DMB-TH front-end decryption module 24, and a QAM modulator 26 correspond...

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Abstract

The invention discloses a multisystem digital television signal front end processing device and a full-digitalization digital television broadcasting system, which solve the problem that the updated television cannot be compatible with the prior satellite television system. The technical scheme comprises that: the device comprises a plurality of different systems of front end decryption modules and a plurality of QAM modulators, wherein the front end decryption modules demodulate and descramble the received different systems of digital signals, and output the descrambled TS stream; and the QAM modulators demodulate the input TS stream according to a QAM mode and output RF signals after each QAM modulator is connected with the front end decryption modules. The device and the system are applied in the field of digital televisions.

Description

technical field [0001] The present invention relates to a digital TV signal front-end processing device and a digital TV playback system including the front-end processing device, in particular to a front-end processing device with multi-standard digital TV signals and a digital TV playback system including the front-end processing device . Background technique [0002] The currently popular method of watching digital TV through a set-top box actually only solves the problem of how to watch digital TV through traditional analog TV, such as figure 1 However, since the output signal processed by the set-top box is an analog signal, what the user watches is not a real digital TV. [0003] figure 2 Shows the structure of a traditional analog TV broadcasting system in a hotel. See figure 2 , the hotel equips each TV set 13 with a satellite set-top box 10 separately. The satellite set-top box 10 receives the DVB-S satellite TV signal, converts it into an analog signal, modu...

Claims

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Application Information

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IPC IPC(8): H04N5/46H04N5/44H04N7/167
Inventor 祝建民徐恩麒杜亮张懿蔡福康龚天杉
Owner SHANGHAI XINGYUE INFORMATION TECH
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