CN201919095U - Universal DVB (Digital Video Broadcasting) module - Google Patents
Universal DVB (Digital Video Broadcasting) module Download PDFInfo
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- CN201919095U CN201919095U CN2010206833904U CN201020683390U CN201919095U CN 201919095 U CN201919095 U CN 201919095U CN 2010206833904 U CN2010206833904 U CN 2010206833904U CN 201020683390 U CN201020683390 U CN 201020683390U CN 201919095 U CN201919095 U CN 201919095U
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Abstract
The utility model discloses a universal DVB module. The universal DVB module is characterized in that: the universal DVB module comprises a DVB module and an adapter module, the DVB module comprises a high-frequency electronic tuner, a receiving demodulator, a power supply module and a signal interface module, the high-frequency electronic tuner is connected with the receiving demodulator, the receiving demodulator is connected with the signal interface module, and the power supply module is connected with the signal interface module in order to obtain power, and is respectively connected with the high-frequency electronic tuner and the receiving demodulator to supply electricity; the DVB module is connected with the adapter module through DVB universal interfaces; and the adapter module is connected with a mainboard module with an audio/video decoding CPU (Central Processing Unit) through data interfaces. The universal DVB module has high flexibility and the advantage of low cost, and is worth popularizing widely in the field of digital video broadcasting.
Description
Technical field
The utility model relates to a kind of general DVB module.
Background technology
Digital video broadcasting is the Digital Television Open Standard by a series of international recognitions of DVB project maintenance.The aim of DVB is to design a general digital television system, and the conversion between these intrasystem various transmission meanss has the simplest mode, increases versatility as much as possible.The DVB standard provides a cover digital television system standard complete, that be applicable to different media.The DVB digital broadcasting transmission system has utilized all general television broadcast transmissions medium that comprise satellite, wired, ground etc.The DVB standard that they are corresponding respectively: DVB-S, DVB-C and DVB-T.
Existing set-top box, function singleness often, for example CATV set-top-box is often with the tuner of Digital Television receiving front-end, demodulation chip, and decoding chip (CPU) is placed on the same pcb board, therefore often can only realize single DVB function, unlikely finish the DVB function that realizes other simultaneously.And module of the present utility model by a kind of self-defining general DVB module interface, can realize different DVB modules compatible connection on interface.And then can on same machine, realize different DVB functions by this interface mode.
Summary of the invention
It is single that the purpose of this utility model is to solve traditional set-top box functionality, can only realize the present situation of the DVB function that certain is single separately.In order to realize goal of the invention, the utility model relates to following content:
A kind of general DVB module, it is characterized in that comprising DVB module and interconnecting module, described DVB module comprises high-frequency electronic tuner, receiving demodulation device, supply module and Signal interface module, described high-frequency electronic tuner is connected with the receiving demodulation device, described receiving demodulation device is connected with Signal interface module, described supply module is connected to obtain electric energy with Signal interface module, and described supply module is connected with the receiving demodulation device with high-frequency electronic tuner respectively and powers; Described DVB module is connected by the DVB general-purpose interface with interconnecting module; Described interconnecting module is connected by data-interface with the mainboard module at audio/video decoding CPU place.
The mainboard module at described interconnecting module and audio/video decoding CPU place is respectively equipped with TS data-interface and power supply 12C configuration interface, and carries out the male and female setting, can cooperate grafting.
Compared with prior art, the utility model has the advantages that:
Higher flexibility, the user can decide required DVB function according to the actual demand of oneself, selects corresponding D VB module then.Because the versatility of module interface, the DVB module that same interface can be pegged graft different is applicable to different DVB standards, and is user-friendly.
Lower cost advantage is changed the cost that a kind of DVB receiving function user only need bear corresponding DVB module electronic element and dependency structure assembly, and can realize multiple DVB function on a kind of terminal.Far below the pressure of buying a set-top box again.
Description of drawings
Fig. 1 is the structural representation that the general DVB module of the utility model realizes;
Fig. 2 is the structural representation of DVB module in the utility model;
Fig. 3 is the structural representation of DVB general-purpose interface in the utility model;
Embodiment
General as depicted in figs. 1 and 2 DVB module comprises DVB module 101 and interconnecting module 102, described DVB module 101 comprises high-frequency electronic tuner 201, receiving demodulation device 202, supply module 203 and Signal interface module 204, described high-frequency electronic tuner 201 is connected with receiving demodulation device 202, described receiving demodulation device 202 is connected with Signal interface module 204, described supply module 203 is connected to obtain electric energy with Signal interface module 204, and described supply module 203 is connected with receiving demodulation device 202 with high-frequency electronic tuner 201 respectively and powers; Described DVB module 101 is connected by the DVB general-purpose interface with interconnecting module 102; The mainboard module 103 at described interconnecting module 102 and audio/video decoding CPU place is connected by data-interface.The mainboard module 103 at interconnecting module 102 and audio/video decoding CPU place is respectively equipped with TS data-interface and power supply 12C configuration interface, and carries out the male and female setting, can cooperate grafting.
Below implementation of the present utility model is done and is specified:
As Fig. 1 is the structural representation that general DVB module realizes, general DVB function realizes being divided into three parts: DVB module 101, interconnecting module 102, and the mainboard module 103 at audio/video decoding CPU place.(this DVB module is DVB-C owing to DVB module consistency characteristics 101 operation principles and working interface, DVB-S or DVB-T module), when the specific implementation functions of modules, different DVB module components (can be mainly tuner, demodulation chip, the modular power source chip and be used to socket of realizing general-purpose interface etc.) layout is at onesize circuit board, consider DVB module 101 better generality and flexibility, we directly are not connected it with mainboard module 103, but the DVB module is connected with mainboard by interconnecting module 102, by this module the general-purpose interface signal is divided into two parts, a part is used for the TS stream high-frequency signal of transmission standard, and another part is used for the power supply of DVB module 101, resets, communicate by letter with the I2C of mainboard module 103, and low-frequency transmission signal such as other configuration signal.This two parts of signals is connected with mainboard module 103 by interface independently then.Thereby the position that has guaranteed DVB module 101 is not limited by mainboard module 103.Strengthen the practicality and the adaptability of corresponding module.
DVB hardware module shown in Figure 2 comprises high-frequency electronic tuner 201, receiving demodulation device 202, supply module 203, Signal interface module 204; High-frequency electronic tuner 201 (being Tuner) major function is for to be converted to the IF signal with the RF signal (may also may be the digital television signal in the CATV transmission line road from the satellite antenna tuner) that receives.Receiving demodulation device 202, major function comprise that baseband signal separates the mediation channel-decoding, are used for IF signal with tuner output by demodulation, after decoding and the correction process, are converted to the serial or parallel data of the mpeg transport stream of standard.Supply module 203 is mainly used in the power supply of tuner and receiving demodulation device in the module.The connect-disconnect structure that Signal interface module 204 is mainly used between DVB module and the mainboard is realized, the general-purpose interface signal of DVB part can be divided into two parts, a part is used for the MPEGTS stream of transmission standard, and another road is used for power supply, the connection of I2C communication and other DVB module desired signals.
As Fig. 3 is the concrete definition of DVB general-purpose interface.The signal of general-purpose interface is divided into three kinds altogether, is respectively power supply signal 301, transmission stream signal 302 and control configuration signal 303.Power supply signal 301 takies and mainly is divided into two-way, be used for transmitting two groups of power supply signals of 5V and 12V respectively, the 5V power supply is mainly used in the power supply of tuner and demodulation chip, the DVB module can be general, according to existing DVB receiving chip scheme, with its electric current predefine is 500mA, can satisfy the power demands of most DVB module chip and tuner.The 12V power supply then is exclusively used in the power supply of reception antenna part in the satellite digital TV, the domestic 350mA that is generally of its supply current standard, the electric current of considering factor such as voltage transitions efficient definition 12V is 600mA, and the design that this two-part supply current can use according to reality etc. is adjusted.Transmission stream signal 302 is used for data-signal, clock signal, synchronizing signal of transmission of one line standard mpeg standard etc., according to the run simultaneously difference of output or asynchronous serial output of transmission stream signal, this part useful signal quantity is 4 tunnel (1 tunnel clock signals when serial is exported, 1 road serial data signal, 1 tunnel frame synchronizing signal, 1 circuit-switched data useful signal) and be 11 tunnel (1 tunnel clock signal, 8 channel parallel data signals during line output, 1 tunnel frame synchronizing signal, 1 circuit-switched data useful signal).Be control signal 303 at last, be used for transmitting the I2C signal that CPU communicates by letter with demodulation chip, reset signal (being used for DVB module receiving demodulation device chip reset uses), frequency locking index signal (being used to indicate DVB partly to receive the whether normally index signal of frequency locking of high-frequency signal), the power control signal of DVB module (thereby can supply with) by the switch that mainboard disposes this control signal is turned off the DVB part when not needing its function power supply, the plug index signal of DVB module is used for whether mainboard is identified in has the DVB module to insert on its corresponding D VB general-purpose interface indication.
In use, the high-frequency signal that the high-frequency electronic tuner 201 of DVB module 101 receives on the antenna becomes intermediate-freuqncy signal with it, be transferred to receiving demodulation device 202 then, receiving demodulation device 202 is by passing through intermediate-freuqncy signal through filtering, amplification, A/D conversion, the serial of output mpeg standard and parallel transmission stream after the demodulation, the DVB module is by the general-purpose interface of definition then, give mainboard module through keyset with signals such as transport stream, mainboard module provides power supply for the DVB module, the reset signal of receiving demodulation chip, and the mains switch control signal of module etc.The receiving demodulation chip carries out bidirectional data communication by I2C communication interface and mainboard CPU, and provide the parallel of demodulation output or serial transmission stream to main board, after mainboard receives transport stream, pass through descrambling, demultiplexing, audio/video decoding, functions such as D/A conversion are exported to television display equipment or it are stored in the equipment such as hard disk.
In sum, the utility model adopts the mode of using self-defining DVB general-purpose interface, by having the keyset of general-purpose interface, different DVB modules is connected with the mainboard module at decoding chip place, under same receiver, realized the realization of selectable multiple DVB function.
The above; it only is the preferable embodiment of the utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to replacement or change according to the technical solution of the utility model and inventive concept thereof, all should be encompassed within the protection range of the present utility model.
Claims (2)
1. general DVB module, it is characterized in that comprising DVB module (101) and interconnecting module (102), described DVB module (101) comprises high-frequency electronic tuner (201), receiving demodulation device (202), supply module (203) and Signal interface module (204), described high-frequency electronic tuner (201) is connected with receiving demodulation device (202), described receiving demodulation device (202) is connected with Signal interface module (204), the same Signal interface module of described supply module (203) (204) is connected to obtain electric energy, and the same respectively high-frequency electronic tuner of described supply module (203) (201) is connected with receiving demodulation device (202) and powers; Described DVB module (101) is connected by the DVB general-purpose interface with interconnecting module (102); The mainboard module (103) at described interconnecting module (102) and audio/video decoding CPU place is connected by data-interface.
2. according to the described a kind of general DVB module of claim 1, the mainboard module (103) that it is characterized in that described interconnecting module (102) and audio/video decoding CPU place is respectively equipped with TS data-interface and power supply 12C configuration interface, and carry out the male and female setting, can cooperate grafting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206833904U CN201919095U (en) | 2010-12-24 | 2010-12-24 | Universal DVB (Digital Video Broadcasting) module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206833904U CN201919095U (en) | 2010-12-24 | 2010-12-24 | Universal DVB (Digital Video Broadcasting) module |
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| CN201919095U true CN201919095U (en) | 2011-08-03 |
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| CN2010206833904U Expired - Fee Related CN201919095U (en) | 2010-12-24 | 2010-12-24 | Universal DVB (Digital Video Broadcasting) module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107786880A (en) * | 2016-08-25 | 2018-03-09 | 晨星半导体股份有限公司 | Multimedia processing system and its control method |
| CN113099276A (en) * | 2021-04-13 | 2021-07-09 | 珠海迈科智能科技股份有限公司 | Streaming media server and system capable of randomly combining acquisition modules and implementation method |
-
2010
- 2010-12-24 CN CN2010206833904U patent/CN201919095U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107786880A (en) * | 2016-08-25 | 2018-03-09 | 晨星半导体股份有限公司 | Multimedia processing system and its control method |
| CN113099276A (en) * | 2021-04-13 | 2021-07-09 | 珠海迈科智能科技股份有限公司 | Streaming media server and system capable of randomly combining acquisition modules and implementation method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110803 Termination date: 20181224 |
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| CF01 | Termination of patent right due to non-payment of annual fee |