CN201266980Y - Medium player with digital television emission function - Google Patents
Medium player with digital television emission function Download PDFInfo
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- CN201266980Y CN201266980Y CNU2008200959225U CN200820095922U CN201266980Y CN 201266980 Y CN201266980 Y CN 201266980Y CN U2008200959225 U CNU2008200959225 U CN U2008200959225U CN 200820095922 U CN200820095922 U CN 200820095922U CN 201266980 Y CN201266980 Y CN 201266980Y
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Abstract
The utility model provides a media player with digital television emission function, which comprises a microcontroller unit, a memory unit connected with the microcontroller unit, a USB interface and an audio/video replaying unit, and is characterized by additionally comprising a digital television coded transmitting unit connected with the microcontroller unit; wherein, the digital television coded transmitting unit is used for modulating channel coding and transmitting by radio frequency amplification, wherein, a radio-frequency signal adopts CMBB coding standard or TMMB coding standard or DVB-T coding standard. In the utility model, by adding a television emission module which can transmit a digital audio/video signal with digital television transmission standard on the basis of the existing digital media player, the media player with the digital television emission function can provide optional short-distance wireless signal sources for terminal equipment with digital television receiving function, thereby enriching the program sources of digital television receiving and playing equipment.
Description
Technical field
The utility model relates to the digital television signal lift-off technology, more particularly, relates to a kind of media player with Digital Television emission function.
Background technology
At present, along with popularizing of digital technology and mobile storage technology, in the prior art, and media players such as mobile phone, PDA, MP3, MP4, urinating because of its volume is widely used in characteristics such as carrying.But existing audio-video frequency media player often causes inconvenience to the user owing to be subjected to the restriction of equipment self volume and line, for example, to car steering person and other users that may move among a small circle, more apparent inconvenience in the use also can't allow more people's shared resource.On the other hand, the ground standard of Digital Television also enters commercialization gradually, as is applicable to mobile TV of subway, coach etc., and popularizing of Digital Television is inexorable trend.This just provides necessary basis for traditional media player obtains good video playback.
The utility model content
The technical problems to be solved in the utility model is, a kind of digital audio/video player is provided, this player can be eliminated the line that the restriction that result of broadcast is produced by the equipment self size also can be exempted traditional external derived digital signal and digital received equipment, make the user under the prerequisite that does not influence other people, freedom of movement more can realize simultaneously that a plurality of users share digital audio/video frequency content and need not line within the specific limits.
The above-mentioned technical problem of the utility model solves like this, construct a kind of digital media player with Digital Television emission function, comprise micro controller unit, the memory cell that is connected with micro controller unit, USB interface and audiovisual playback unit, it is characterized in that, also comprise the digital tv encoder transmitter unit that is connected with micro controller unit, be used for that described chnnel coding is modulated also radio frequency amplification and afterwards adopt the digital tv encoder standard to be launched by antenna.
Above-mentioned according to a kind of media player with Digital Television emission function of the present utility model in, it is characterized in that, also comprise the diverter switch group that is connected between micro controller unit and digital tv encoder transmitter unit, the audiovisual playback unit, this switches set has three kinds of states: 1) micro controller unit only is communicated with the digital tv encoder transmitter unit; 2) micro controller unit only is communicated with audiovisual playback unit input; 3) micro controller unit is communicated with audiovisual playback unit and digital tv encoder transmitter unit simultaneously.
Above-mentioned according to a kind of media player with Digital Television emission function of the present utility model in, it is characterized in that, described audiovisual playback unit comprises audio/video decoder, the power amplifier digital to analog converter that links to each other with this decoder and the loud speaker or the earphone socket that are connected with this transducer, also comprises LCD interface that links to each other with audio/video decoder and the LCD display that links to each other with this interface.
Above-mentioned according to a kind of media player with Digital Television emission function of the present utility model in, described Digital Television transmitter unit comprises audio/video coding unit, chnnel coding unit, modulating unit and rf transmitter unit.
Above-mentioned according to a kind of media player with Digital Television emission function of the present utility model in, it is characterized in that described digital tv encoder transmitter unit is a CMBB coding emitter.
Above-mentioned according to a kind of media player with Digital Television emission function of the present utility model in, it is characterized in that described digital tv encoder transmitter unit is a TMMB mobile TV system emitter.
Above-mentioned according to a kind of media player with Digital Television emission function of the present utility model in, it is characterized in that described digital tv encoder transmitter unit is the DVB-T wireless launcher.
Above-mentioned according to a kind of media player with Digital Television emission function of the present utility model in, it is characterized in that described memory cell comprises NAND FLASH, SD card and the RAM memory that connects by memory interface.
Above-mentioned according to a kind of media play with Digital Television emission function of the present utility model wherein, it is characterized in that described USB interface is used to connect external memory storage to remedy the deficiency of this machine memory space.
Implement a kind of media player that the utility model provides with Digital Television emission function, by on existing digital media player basis, increased the transmission of television module that digital audio-video signal can be sent out with the digital television transfer standard, thereby can be terminal equipment optional near radio signal source is provided, thereby enrich the program source that Digital Television receives playback equipment with Digital Television receiving function.
Description of drawings
Fig. 1 is the structural representation that the utlity model has the media player of Digital Television emission function;
The diverter switch group structural representation of Fig. 2 for adopting in the utility model;
Fig. 3 is the circuit theory diagrams of subelement in the utility model;
Fig. 4 is the structural representation of the utility model one embodiment.
Embodiment
As shown in Figure 1, in the media player that the utility model provides, comprise micro controller unit 1, memory cell 2, USB interface 7, audiovisual playback unit 3, digital tv encoder transmitter unit 4, key switch unit 5 and the power subsystem 6 of powering to various piece with Digital Television emission function.
Wherein, memory cell 2 comprises the memory (for example, flash memory 21, SD card 22 and random access memory 23) that connects by memory interface.Described memory cell 2 storages are with the audio, video data of MP3 format or MP4 or other form coding, and described audio/video decoder 31 is used for the data of reading from described memory cell are decoded, and can use software, hardware or firmware to realize.
Wherein USB interface 7 can connect external memory storage by this interface in order to realize outside extension storage.Described audio/video decoder 31 is used for the media data of reading from described USB interface 7 is decoded, and can use software, hardware or firmware to realize.
Wherein, audiovisual playback unit 3 comprises audio/video decoder 31, the power amplifier digital to analog converter 32 that links to each other with this decoder and loud speaker that is connected with this transducer or earphone socket 33, also comprises LCD interface 34 that links to each other with audio/video decoder 31 and the LCD display 35 that links to each other with this interface.
Wherein, digital tv encoder transmitter unit 4 comprises audio/video coder 41, channel encoder 42, modulator 43, radiofrequency launcher 44 and antenna 45.Described audio/video coder 41 is used for microprocessor unit 1 is encoded from the audio, video data of memory cell 2.For avoid code stream transmit in error code generation and make system have certain error correction and antijamming capability, the utility model adopts 42 pairs of packed data streams of being handled by described audio/video coder 41 of channel encoder to encode in order to the input signal as digital tv encoder transmitter unit 4 again.Thereby this signal in modulator 43 with high-frequency current modulate by radiofrequency launcher 44 from antenna 45 with emission of radio frequency signals.
Described radiofrequency signal of launching can adopt following three kinds of digital tv encoder standards (CMBB coding standard or TMMB coding standard or DVB-T coding standard) that extensively adopt now to transmit.
CMMB is the China Mobile multimedia broadcasting system; TMMB is the mobile TV standard, and it utilizes technology such as time-domain multiplexed and channel multiplexing, has solved the multi-standard compatibility of transmitting terminal, and its supported frequency range is very big, from 30MHz to 3000MHz; DVB-T is the Digital Television Open Standard that a series of international recognitions of DVB project maintenance are arranged.DVB-T is meant the terrestrial wireless transmission means in this system transmissions mode.DVB-T utilizes VHF and UHF carrier wave, and uses the COFDM modulation system.
Because relatively power consumption of emission state, therefore switching switches set with one is connected between micro controller unit 1, digital tv encoder transmitter unit 4 and the audiovisual playback unit 3, three kinds of operating states are provided: 1) micro controller unit 1 only is communicated with digital tv encoder transmitter unit 4, and replayed portion is not worked; 2) micro controller unit 1 only is communicated with audiovisual playback unit 3 inputs, and radiating portion is not worked; 3) micro controller unit 1 is communicated with audiovisual playback unit 3 and digital tv encoder transmitter unit 4 simultaneously, and two parts are worked simultaneously.
Wherein, key switch unit 5 is used for this media player of switch.
Wherein, power subsystem 6 mainly is responsible for power distribution between audiovisual playback unit 3 and digital tv encoder transmitter unit 4, carries out the power distribution management according to the diverter switch group state between micro controller unit 1, audiovisual playback unit 3 and digital tv encoder transmitter unit 4.
In addition, audio/video coder 41 shown in Fig. 1 and channel encoder 42 can be integrated in the micro controller unit 1, thereby make the coding handled from micro controller unit 1 directly can enter to modulate in the modulator 43 and then pass through radiofrequency launcher 44 and launch.
The diverter switch group structural representation of Fig. 2 for adopting in the utility model.As shown in Figure 2, use this switches set can be implemented in switching between micro controller unit 1 and digital tv encoder transmitter unit 4, the audiovisual playback unit 3, this switches set has three kinds of states: 1) only switch 1 closure can be made micro controller unit 1 only be communicated with audiovisual playback unit 3 inputs; 2) only micro controller unit 1 only is communicated with switch 2 closures with digital tv encoder transmitter unit 4; 3) with 2 while of switch closure micro controller unit 1 is communicated with simultaneously with audiovisual playback unit 3 and digital tv encoder transmitter unit 4 switch 1, to realize local broadcast and to launch and carry out simultaneously.Switching between described three kinds of operating states is not limited in method shown in this figure, also can adopt power management to distribute to realize the switching between above-mentioned three kinds of operating states.
Fig. 3 is the circuit theory diagrams of subelement in the utility model.As shown in Figure 3, main controller module is separated encoder with all and is integrated on the chip piece, and this main controller module circuit has comprised the micro controller unit 1 among Fig. 1, audio/video decoder 31 and audio/video coder 41.In addition, RAM that adopts in Fig. 1 and NAND FLASH element circuitry are as shown in Figure 3.The power supply control element also can be obtained by prior art.In addition, digital tv encoder transmitter unit 4 of the present utility model considers that the power consumption factor must adopt the transmission of television module of small-power low power consumption.The DVB-T chip DIB7710-P that in the utility model one embodiment, can adopt Beijing to create the CMMB transmitting chip IF-TX101 or the TMMB42000 chip of firm video signal development or adopt French DiBcom company to release.
Fig. 4 is according to an embodiment of the present utility model, this figure has showed that the media player with Digital Television emission function and the digital terminal with digital television signal receiving function in the certain limit (for example, Digital Television and/or have media player, mobile phone, PDA and other similar devices of digital television signal receiving function) realize resource-sharing.As shown in Figure 4, the digital terminal (for example, Digital Television) that has the digital television signal receiving function in the media player with Digital Television emission function in the certain limit and this scope can be realized resource-sharing by corresponding digital television transmission standard.The media player that wherein has the Digital Television emission function sends to the digital terminal (for example, Digital Television) that has the digital television signal receiving function in this scope with the audio, video data on it by the employing of the functional mechanism described in Fig. 1 digital television transfer standard and goes up to realize resource-sharing.The digital television transfer standard that is wherein adopted can be CMMB or TMMB or DVB-T.Correspondingly, digital tv encoder transmitter unit 4 can be selected CMMB coding emitter or TMMB mobile TV system's emitter or DVB-T wireless launcher for use.
Claims (8)
1, a kind of media player with Digital Television emission function, comprise micro controller unit (1), the memory cell (2) that is connected with micro controller unit (1), audiovisual playback unit (3) and USB interface (7), it is characterized in that, also comprise the digital tv encoder transmitter unit (4) that is connected with micro controller unit (1).
2, according to the described a kind of media player of claim 1 with Digital Television emission function, it is characterized in that, also comprise the diverter switch group that is connected between micro controller unit and digital tv encoder transmitter unit, the audiovisual playback unit, this switches set has three kinds of states: 1) micro controller unit only is communicated with the digital tv encoder transmitter unit; 2) micro controller unit only is communicated with audiovisual playback unit input; 3) micro controller unit is communicated with audiovisual playback unit and digital tv encoder transmitter unit simultaneously.
3, according to claim 1 or 2 described a kind of media players with Digital Television emission function, it is characterized in that, described audiovisual playback unit (3) comprises audio/video decoder, the power amplifier digital to analog converter that links to each other with this decoder and the loud speaker or the earphone socket that are connected with this transducer, also comprises LCD interface that links to each other with audio/video decoder and the LCD display that links to each other with this interface.
4, according to the described a kind of media player of claim 3, it is characterized in that described digital tv encoder transmitter unit (4) comprises a channel encoder with Digital Television emission function.
According to the described a kind of media player of claim 3, it is characterized in that 5, described digital tv encoder transmitter unit (4) is CMBB coding emitter with Digital Television emission function.
According to the described a kind of media player of claim 3, it is characterized in that 6, described digital tv encoder transmitter unit (4) is a TMMB coding emitter with Digital Television emission function.
According to the described a kind of media player of claim 3, it is characterized in that 7, described digital tv encoder transmitter unit (4) is a DVB-T coding emitter with Digital Television emission function.
According to the described a kind of media player of claim 3, it is characterized in that 8, described memory cell (2) is NAND FLASH or SD card or the RAM that connects by memory interface with Digital Television emission function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200959225U CN201266980Y (en) | 2008-07-24 | 2008-07-24 | Medium player with digital television emission function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200959225U CN201266980Y (en) | 2008-07-24 | 2008-07-24 | Medium player with digital television emission function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201266980Y true CN201266980Y (en) | 2009-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200959225U Expired - Fee Related CN201266980Y (en) | 2008-07-24 | 2008-07-24 | Medium player with digital television emission function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201266980Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075704A (en) * | 2010-12-30 | 2011-05-25 | 北京牡丹电子集团有限责任公司 | Transmitting equipment combined concrete rectangular open caisson basin of CMMB (China Mobile Multimedia Broadcasting) mobile video transmission system and construction method thereof |
-
2008
- 2008-07-24 CN CNU2008200959225U patent/CN201266980Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075704A (en) * | 2010-12-30 | 2011-05-25 | 北京牡丹电子集团有限责任公司 | Transmitting equipment combined concrete rectangular open caisson basin of CMMB (China Mobile Multimedia Broadcasting) mobile video transmission system and construction method thereof |
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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: 20090701 Termination date: 20110724 |