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Live telecasting satellite system tuner

A technology of direct broadcast satellite and demodulator, applied in parts of TV system, TV, color TV, etc., can solve the problems of high cost and complex production process, reduce product cost and production cost, and simplify production Process, the effect of improving production efficiency

Inactive Publication Date: 2007-06-06
CENT ACADEME OF SVA GROUP
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  • Summary
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  • Description
  • Claims
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Problems solved by technology

[0003] At present, DVB-S2 (digital TV satellite broadcasting) dedicated high-frequency receiving module and ABS-S channel demodulation module are independently designed and applied to ABS-S satellite digital TV receivers at home and abroad; the cost is high and the production process is complicated.

Method used

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  • Live telecasting satellite system tuner
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Embodiment approach

[0012] As shown in Fig. 1, the present invention provides a kind of ABS-S digital tuner demodulator, is applied in the digital satellite TV receiver, is used for receiving digital satellite TV signal, and it comprises the high-frequency receiving module 101 and ABS connected by circuit -S demodulation module 102;

[0013] The high-frequency receiving module 101 receives the ABS-S satellite signal, performs high-frequency modulation, obtains an IQ modulated signal and outputs it;

[0014] The ABS-S demodulation module 102 receives the IQ modulated signal output by the high-frequency receiving module 101, performs ABS-S-based demodulation on the signal, obtains and outputs the transport stream signal.

[0015] In this embodiment, the high-frequency receiving module 101 adopts the high-frequency receiving chip model ZL10039 provided by ZARLINK, and the ABS-S demodulation module 102 adopts the ABS-S demodulator chip AVL1108 provided by AVAILINK. The tuner chip, as shown in Figure...

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Abstract

A digital tuning demodulator of satellite live telecasting system is prepared as using high-frequency receiving module to receive ABS-S satellite signal and carrying out high-frequency modulation on said signal to obtain IQ modulated signal to be outputted, applying ABS-S demodulating module to receive IQ modulated signal outputted by high-frequency receiving module and carrying out demodulation on IQ modulated signal based on ABS-S to obtain transmission stream signal to be outputted.

Description

technical field [0001] The invention relates to an ABS-S (General Administration of Broadcasting Direct Satellite System) digital tuner and demodulator, which is a demodulation device for digital satellite TV receiving products and relates to the field of digital TV receiving. Background technique [0002] The ABS-S digital tuner is mainly used in the reception of digital satellite TV. It demodulates the digital TV program based on the ABS-S modulation mode sent by the satellite into a transport stream signal, and provides it to the digital TV decoding chip for decoding and reception. [0003] At present, the DVB-S2 (digital TV satellite broadcasting) dedicated high-frequency receiving module and the ABS-S channel demodulation module are independently designed and applied to the ABS-S satellite digital TV receiver at home and abroad; the cost is high and the production process is complicated. Contents of the invention [0004] The purpose of the present invention is to pro...

Claims

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Application Information

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IPC IPC(8): H04N5/44H04N5/50H04N7/20
Inventor 王国中王征蒋兆林程智俊徐利平
Owner CENT ACADEME OF SVA GROUP
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