CN201986056U - Receiving and decoding system for wireless digital signals - Google Patents
Receiving and decoding system for wireless digital signals Download PDFInfo
- Publication number
- CN201986056U CN201986056U CN2011201335502U CN201120133550U CN201986056U CN 201986056 U CN201986056 U CN 201986056U CN 2011201335502 U CN2011201335502 U CN 2011201335502U CN 201120133550 U CN201120133550 U CN 201120133550U CN 201986056 U CN201986056 U CN 201986056U
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- wireless digital
- receiving
- tuner
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Abstract
The utility model discloses a receiving and decoding system for wireless digital signals. The receiving and decoding system comprises a main PCB (Printed Circuit Board), a tuning module, a demodulation module connected with both the tuning module and the main PCB, and a power supply module connected with the tuning module, wherein the main PCB is provided with a central processing module, a decoder connected with the central processing module, and an audio-video processing module connected with the decoder, as well as an audio output port and a video output port which are connected with the audio-video processing module; and the tuning module comprises an RF (Radio Frequency) head and an RF receiving module connected with each other. By adopting the above structure, the whole receiving and decoding system has a simple structure and is convenient to implement. When the receiving and decoding system is used for receiving and converting the wireless digital signals, the signal transmission quantity within the bandwidth per unit can be increased.
Description
Technical field
The utility model relates to a kind of signal receiving transformation apparatus, specifically is the reception decode system of wireless digital signal.
Background technology
Wireless digital TV-set is connected with set-top box, and set-top box receives wireless digital signal and wireless digital signal is changed audio, vision signal for Digital Television output.In order to make the wireless digital TV-set broadcast smooth, prior art usually satisfies the demand that wireless digital signal receives and changes by increasing bandwidth, and this has just increased the cost of use wireless digital TV-set, thereby makes wireless digital TV-set be difficult to be popularized.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and the reception decode system that regularly can increase the wireless digital signal of wireless digital signal transmission quantity in bandwidth one is provided.
The purpose of this utility model is achieved through the following technical solutions: the reception decode system of wireless digital signal, the demodulation module that comprises PCB mainboard, tuner module, is connected with the PCB mainboard with tuner module, the power module that is connected with tuner module; Audio output port and video output that described PCB mainboard is provided with central processing module, the decoder that is connected with central processing module, the audio frequency and video processing module that is connected with decoder, is connected with the audio frequency and video processing module; Described tuner module comprises tuner and the Receiver Module that is connected with tuner.Wherein, power module is the power supply unit of whole system, and tuner filters high frequency, the output intermediate-freuqncy signal makes frequency output of the present utility model at 435M-858MHZ, and demodulation module carries out intermediate frequency demodulation, the D/A conversion is carried out in inside, output audio/video TS stream, and it supports automatic identification form/multicarrier.
Be provided with CA clamp interface between the connection line of described central processing module and decoder, the connection line of described demodulation module and PCB mainboard is connected with CA clamp interface.The utility model should connect the CA clamp module that wireless digital signal is decrypted, i.e. condition receiving card plate module at CA clamp interface when digital signal is received the decode.
For the utility model can be satisfied the demands when the memory space of module start-up code, storage system file and embedded software is big, described central processing module is connected with program storage, and program storage is connected with power module.
Described PCB mainboard and demodulation module all are connected with synchronous DRAM, and two synchronous DRAMs all are connected with power module, the same frequency dynamic random access memory that is connected with the PCB mainboard can carry out buffer memory to the TS flow data that demodulation module produces, and the same frequency dynamic random access memory that is connected with demodulation module can carry out buffer memory to the signal that tuner module is input to demodulation module.
Central processing module of the present utility model also can connect a master control borad, and control the utility model by this master control borad and whether carry out the signal reception, and on this master control borad, add key scan and LED display device, thereby the utility model is carried out dynamic monitoring and Based Intelligent Control.
The utility model compared with prior art has the following advantages and beneficial effect: the utility model comprises PCB mainboard, demodulation module and tuner module, the PCB mainboard is provided with decoder, when the utility model is used for the wireless digital signal reception, importing wireless digital signal of the present utility model can transmit by tuner module and demodulation module processing back formation high compression signal, this just makes has regularly increased the transmission quantity of signal in bandwidth one, thereby makes the required cost of use wireless digital TV-set reduce.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with embodiment, but execution mode of the present utility model is not limited thereto.
Embodiment:
As shown in Figure 1, the utility model mainly is made up of PCB mainboard, tuner module, demodulation module and power module, demodulation module is HD2816 or is the EM241 modulator-demodulator of Siemens, demodulation module is connected with the PCB mainboard with tuner module, power module is a power supply unit, can be battery or integrated power supply, it is connected with tuner module, and the PCB mainboard is ALI3381.Wherein, audio output port and video output that the PCB mainboard is provided with central processing module, the decoder that is connected with central processing module, the audio frequency and video processing module that is connected with decoder, is connected with the audio frequency and video processing module, central processing module is CPU, and the audio frequency and video processing module adopts audio/video decoding chip TW2835.Tuner module comprises tuner and the Receiver Module that is connected with tuner, and the model of frequency modulation head is V9-M33F-40, and Receiver Module is selected the TRF6900 radio frequency chip of TI company for use.
Be provided with CA clamp interface between the connection line of central processing module of the present utility model and decoder, i.e. the interface of condition receiving card plate module, the connection line of demodulation module and PCB mainboard is connected with CA clamp interface.Central processing module is connected with program storage, and program storage is preferably the flash program storage, and program storage is connected with power module.PCB mainboard and demodulation module all are connected with synchronous DRAM, i.e. SDRAM, and two synchronous DRAMs all are connected with power module.
As mentioned above, then can well realize the utility model.
Claims (4)
1. the reception decode system of wireless digital signal is characterized in that: the demodulation module that comprises PCB mainboard, tuner module, is connected with the PCB mainboard with tuner module, the power module that is connected with tuner module; Audio output port and video output that described PCB mainboard is provided with central processing module, the decoder that is connected with central processing module, the audio frequency and video processing module that is connected with decoder, is connected with the audio frequency and video processing module; Described tuner module comprises tuner and the Receiver Module that is connected with tuner.
2. the reception decode system of wireless digital signal according to claim 1, it is characterized in that: be provided with CA clamp interface between the connection line of described central processing module and decoder, the connection line of described demodulation module and PCB mainboard is connected with CA clamp interface.
3. the reception decode system of wireless digital signal according to claim 1, it is characterized in that: described central processing module is connected with program storage, and program storage is connected with power module.
4. according to the reception decode system of each described wireless digital signal of claim 1～3, it is characterized in that: described PCB mainboard and demodulation module all are connected with synchronous DRAM, and two synchronous DRAMs all are connected with power module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201335502U CN201986056U (en) | 2011-04-29 | 2011-04-29 | Receiving and decoding system for wireless digital signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201335502U CN201986056U (en) | 2011-04-29 | 2011-04-29 | Receiving and decoding system for wireless digital signals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201986056U true CN201986056U (en) | 2011-09-21 |
Family
ID=44613505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201335502U Expired - Fee Related CN201986056U (en) | 2011-04-29 | 2011-04-29 | Receiving and decoding system for wireless digital signals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201986056U (en) |
-
2011
- 2011-04-29 CN CN2011201335502U patent/CN201986056U/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: 20110921 Termination date: 20140429 |