CN200990647Y - Direct broadcasting satellite system satellite digital television receiver - Google Patents
Direct broadcasting satellite system satellite digital television receiver Download PDFInfo
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- CN200990647Y CN200990647Y CN 200620049353 CN200620049353U CN200990647Y CN 200990647 Y CN200990647 Y CN 200990647Y CN 200620049353 CN200620049353 CN 200620049353 CN 200620049353 U CN200620049353 U CN 200620049353U CN 200990647 Y CN200990647 Y CN 200990647Y
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- abs
- digital
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Abstract
The utility model discloses the satellite digital TV receiver of live broadcast satellite system and comprises an antenna unit which is connected through circuit, an ABS-S digital tuning demo and a MPEG2 signal source encoder; the ABS-S digital tuning demo comprises a high frequency receiving module which is connected through circuit and an ABS-S demodulating module. The utility model can receive and demodulate digital programs from satellite ABS-S, output video and audio signals and realize the receiving of digital satellite programs adopting ABS-S demodulating method. Furthermore, due to the adoption of integrated ABS-S digital tuning demodulator, the utility model reduces product cost and manufacturing cost without reducing the property of the product, simplifies producing techniques and improve production efficiency.
Description
Technical field
The utility model relates to a kind of ABS-S (broadcasting general bureau direct broadcast satellite system) satellite digital TV receiver, is that a kind of digital satellite television receives product, relates to Digital Television and receives the field.
Background technology
ABS-S satellite digital TV receiver is mainly used in the reception of digital satellite television signal, it is with the digital television program based on the ABS-S channel modulation mode of satellite transmission, reception is decoded into composite video and stereo audio signal, offers TV terminal reduction TV programme.The present invention is that first uses the satellite digital TV of integrated A BS-S digital tuning demodulation module to receive product at home and in the world at present.
The utility model content
The purpose of this utility model is to provide a kind of ABS-S satellite digital TV receiver, it receives also demodulation from the ABS-S digital television program of satellite, output video and audio signal have realized adopting the reception of the digital satellite television program of ABS-S modulation system.
In order to achieve the above object, the utility model provides a kind of ABS-S satellite digital TV receiver, and it comprises the antenna element that connects by circuit, ABS-S tuner and MPEG2 source decoder;
Described antenna element comprises low-converter/LNB (tuner), receives ABS-S satellite digital TV downstream signal, carries out low noise amplification, filtering, frequency-conversion processing, obtains standard satellite RF signal;
Described ABS-S tuner comprises high frequency receiver module and the ABS-S demodulation module that connects by circuit;
The LNB input of described high frequency receiver module is connected with antenna element by coaxial cable, and its acceptance criteria satellite RF signal carries out high frequency modulated, obtains IQ (vector) modulation signal and output;
Described ABS-S demodulation module receives the IQ modulation signal of high frequency receiver module output, and signal is carried out demodulation based on ABS-S, obtains TS (transmissions) stream signal and exports;
Described MPEG2 source decoder receives TS stream signal, and it is decoded, and exports composite video signal and stereo audio signal respectively.
The vision signal of described MPEG2 source decoder output comprises CVBS signal (videoblankingsync) and Y/C component TV signal.
The utility model also comprises the power module that is connected with the MPEG2 source decoder, and its control by infrared keyboard provides the working power of this ABS-S satellite digital TV receiver.
The utility model also comprises flash memory (FLASH) and the dynamic random access memory (SDRAM) that is connected with the MPEG2 source decoder, is used for the TS stream signal that store M PEG2 source decoder receives.
The utility model also comprises the RS-232 interface circuit that is connected with the MPEG2 source decoder, and it is connected with computer by serial, to the function upgrading renewal of this ABS-S satellite digital TV receiver.
The ABS-S satellite digital TV receiver that the utility model provides, adopted the tuning demodulation module of integrated digital, can receive the TV programme of national direct satellite direct broadcast system, and product cost and production cost under the prerequisite that does not reduce performance, have been reduced, simplify production technology, improved production efficiency.
Description of drawings
Fig. 1 is the structural representation of the ABS-S satellite digital TV receiver that provides of the utility model;
Fig. 2 is the concrete application schematic diagram of the ABS-S satellite digital TV receiver that provides of the utility model.
Embodiment
Following according to Fig. 1 and Fig. 2, specify a kind of better embodiment of the present utility model:
As shown in Figure 2, the utility model provides a kind of ABS-S satellite digital TV receiver, it receives ABS-S satellite digital TV signal, demodulation and export the composite video model and stereo audio signal to television set, realize the reception of national direct broadcast satellite system TV programme.
As shown in Figure 1, the ABS-S satellite digital TV receiver that the utility model provides, it comprises the antenna element 101 that connects by circuit, ABS-S tuner and MPEG2 source decoder 102;
Described antenna element 101 comprises low-converter/LNB, receives ABS-S satellite digital TV downstream signal, carries out low noise amplification, filtering, frequency-conversion processing, obtains the standard satellite RF signal of 950MHz～2150MHz;
Described ABS-S tuner comprises high frequency receiver module 103 and the ABS-S demodulation module 104 that connects by circuit;
The LNB input of described high frequency receiver module 103 is connected with antenna element 101 by coaxial cable, and its acceptance criteria satellite RF signal carries out high frequency modulated, obtains IQ modulation signal and output; In the present embodiment, the model that this high frequency receiver module 103 adopts ZARLINK company to provide is the high frequency receiving chip of ZL10039;
Described ABS-S demodulation module 104 receives the IQ modulation signal of high frequency receiver modules 103 outputs, and signal is carried out demodulation based on ABS-S, obtains TS stream signal and output; In the present embodiment, the model that this ABS-S demodulation module 104 adopts AVAILINK company to provide is the ABS-S demodulation chip of AVL1108;
Described MPEG2 source decoder 102 receives TS stream signal, and it is decoded, and exports composite video signal and stereo audio signal respectively; In the present embodiment, the model that this MPEG2 source decoder 102 adopts CHEERTEK company to provide is the high performance chips of CT216.
The composite video signal of described MPEG2 source decoder output comprises CVBS signal and Y/C component TV signal.
The utility model also comprises the power module 105 that is connected with MPEG2 source decoder 102, and its control by infrared keyboard provides the working power of this ABS-S satellite digital TV receiver.
The utility model also comprises FLASH 106 and the SDRAM 107 that is connected with MPEG2 source decoder 102, is used for the TS stream signal that store M PEG2 source decoder 102 receives.
The utility model also comprises the RS-232 interface circuit 108 that is connected with MPEG2 source decoder 102, and it is connected with computer by serial, to the function upgrading renewal of this ABS-S satellite digital TV receiver.
The ABS-S satellite digital TV receiver that the utility model provides, adopted the tuning demodulation module of integrated digital, can receive the TV programme of national direct satellite direct broadcast system, and product cost and production cost under the prerequisite that does not reduce performance, have been reduced, simplify production technology, improved production efficiency.
Claims (5)
1. a direct broadcast satellite system satellite digital TV receiver is characterized in that, comprises the antenna element (101) that connects by circuit, ABS-S digital tuning demodulator and MPEG2 source decoder (102);
Described antenna element (101) comprises low-converter/tuner, receives ABS-S satellite digital TV downstream signal, carries out low noise amplification, filtering, frequency-conversion processing, obtains standard satellite RF signal;
Described ABS-S digital tuning demodulator comprises high frequency receiver module (103) and the ABS-S demodulation module (104) that connects by circuit;
The tuner input of described high frequency receiver module (103) is connected with antenna element (101) by coaxial cable, and its acceptance criteria satellite RF signal carries out high frequency modulated, obtains Vector Modulation signal and output;
Described ABS-S demodulation module (104) receives the Vector Modulation signal of high frequency receiver module (103) output, and signal is carried out demodulation based on ABS-S, obtains transport stream signals and output;
Described MPEG2 source decoder (102) receives transport stream signals, it is decoded, respectively outputting video signal and stereo audio signal.
2. direct broadcast satellite system satellite digital TV receiver as claimed in claim 1 is characterized in that, the vision signal of described MPEG2 source decoder (102) output comprises videoblankingsync and Y/C component TV signal.
3. direct broadcast satellite system satellite digital TV receiver as claimed in claim 1, it is characterized in that, this direct broadcast satellite system satellite digital TV receiver also comprises the power module (105) that is connected with MPEG2 source decoder (102), and its control by infrared keyboard provides working power.
4. direct broadcast satellite system satellite digital TV receiver as claimed in claim 1, it is characterized in that this direct broadcast satellite system satellite digital TV receiver also comprises flash memory (106) and the dynamic random access memory (107) that is connected with MPEG2 source decoder (102).
5. direct broadcast satellite system satellite digital TV receiver as claimed in claim 1 is characterized in that, this direct broadcast satellite system satellite digital TV receiver also comprises the RS-232 interface circuit (108) that is connected with MPEG2 source decoder (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620049353 CN200990647Y (en) | 2006-12-22 | 2006-12-22 | Direct broadcasting satellite system satellite digital television receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620049353 CN200990647Y (en) | 2006-12-22 | 2006-12-22 | Direct broadcasting satellite system satellite digital television receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200990647Y true CN200990647Y (en) | 2007-12-12 |
Family
ID=38941677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620049353 Expired - Fee Related CN200990647Y (en) | 2006-12-22 | 2006-12-22 | Direct broadcasting satellite system satellite digital television receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200990647Y (en) |
-
2006
- 2006-12-22 CN CN 200620049353 patent/CN200990647Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071212 Termination date: 20111222 |