CN2750603Y - Portable digital television receiver having functions of storage and multimedia play - Google Patents
Portable digital television receiver having functions of storage and multimedia play Download PDFInfo
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- CN2750603Y CN2750603Y CNU2004201026246U CN200420102624U CN2750603Y CN 2750603 Y CN2750603 Y CN 2750603Y CN U2004201026246 U CNU2004201026246 U CN U2004201026246U CN 200420102624 U CN200420102624 U CN 200420102624U CN 2750603 Y CN2750603 Y CN 2750603Y
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Abstract
The utility model relates to a portable digital television receiver which has a storage function and a multimedia playing function and comprises a digital television antenna, a ground digital channel decoding module, and an integrated multimedia digital processing module. A signal input terminal of the integrated multimedia digital processing module is connected with the ground digital channel decoding module, and an output terminal of the integrated multimedia digital processing module is respectively connected with a flat panel display and a sound player. The integrated multimedia digital processing module comprises a TS stream interface module, a high-speed digital signal processor, a buffer, a display interface circuit, an audio frequency processing circuit, a minitype moving hard disk and a USB2.00 TG interface. The portable digital television receiver of the utility model uses a 32 bits ARM microprocessor with high performance and a high speed DSP to mutually operate in phase, a digital television receiving function, the multimedia playing function, the storage function and an information interchanging function are simultaneous realized, and the utility model provides an ideal platform for recreation and learning in the future.
Description
Technical field
The utility model relates to a kind of receiving and processing device of Digital Television, particularly a kind of portable digital television receiver with audio/video information storage and multi-media player function.
Background technology
Small size lcd screen television receiver on the existing market has certain portability, but this TV is based on present simulated television system design, whole system may be the digitlization except the display part, all the other are the processing method of simulation substantially, this series products can not carry out high-speed mobile and receive, and obviously can not be applicable to the terrestrial broadcasting Digital Television of having risen.This product simultaneously is not because problem such as its power consumption is big and the display frame effect is relatively poor is accepted by the user on market yet.
The maximum characteristics of terrestrial broadcasting Digital Television are to move to receive, and its product attribute is individual mobile digital TV.It is by ground TV broadcast cell site antenna emitting radio wave, and the user is by professional receiving equipment and television set TV reception, and this is the most basic transmission network form of digital television broadcasting.
Except public good functions such as amusement, study, the generality of ground TV broadcast, controllability and survivability also are regarded as national security equipment, make it to become to mobilize its people the most reliable the most direct governments " mouthpiece " under the state of emergency situation.And ground TV broadcast is from the transition of analog to digital, since its move reception, anti-interference, power is little, definition is high, acoustics is good, can be mutual etc. numerous advantages, caused the generally attention of national governments' industrial quarters, China has also listed the timetable of progressively promoting.At present, domestic a plurality of provinces and cities digital TV channel that started broadcasting.
Shenzhen Research Institute of Tsinghua University thinks that the product attribute of terrestrial DTV is individual mobile TV, and the maximum characteristics of portable digital television TV are the mobile receptions that people-oriented.Its Service Properties is personalized service, and its physical attribute is the device of personal portable.Be that the people can be at any time, any state receives personalized TV programme.No matter no matter is house person, stroller, driving person, be worker, old man, student, all may be the user of this product.Particularly numerous students group, because the channel resource of terrestrial broadcasting Digital Television is much larger than simulated television, this product will be the excellent tools of people's distance learning.Estimate that it should be one of following maximum market of Digital Television.
The working method of portable digital television receiver fully digitalization makes it might carry out the compatible processing of other digital medium informations.The application that compatible multiple multimedia messages is handled also can be satisfied the expectation of people to the functional diversities of portable product.Have multiple multimedia chip all to be built-in with the different audio-video codec in the market, but the range of choice of these codecs is not wide.Even the chip of existing several can decode simultaneously MPEG-1, MPEG-2 and MPEG-4 SP on the market, but these chips can only be used in audio frequency and video and the limited and relatively-stationary system of file format combination.Will realize the more multimedia of high flexibility on the hardware of limited bulk and power consumption, be the problem that present multimedia player series products need solve.
Summary of the invention
The technical problems to be solved in the utility model is to design a kind of portable digital television receiver that terrestrial DTV receiving function and multimedia and memory function are one that collects.
The purpose of this utility model can realize by adopting following technical measures, design a kind of portable digital television receiver with storage and multi-media player function, comprise digital TV antenna, the ground digital channel decoding module that links to each other with digital TV antenna, the signal output port of described channel decoding module connects the integrated multimedia digital signal processing module with digital television signal decoding and code storage and multi-media signal decoding broadcast and code storage, the signal output part of described integrated multimedia digital signal processing module connects flat-panel monitor and Audio Players respectively, and embedded software program P also is installed in it.Described integrated multimedia digital signal processing module is a key modules of the present utility model, and this integrated multimedia digital signal processing module provides power supply by portable power source system.The utility model patent provides following two kinds of embodiments:
First kind of scheme is that described integrated multimedia digital signal processing module comprises Digital Television source coding circuit, high speed digital signal processor, television audio treatment circuit, buffer, display interface circuit, audio frequency processing circuit, miniature portable hard drive, USB interface; The signal input part of described Digital Television source coding circuit connects the ground digital channel decoding module, its signal output part connects high speed digital signal processor and television audio treatment circuit, described high speed digital signal processor by ARM control bus/data/address bus respectively with miniature portable hard drive, USB interface is two-way is connected, described high speed digital signal processor directly is connected with buffer is two-way, with display interface circuit, audio frequency processing circuit is unidirectional is connected.
Second kind of scheme is that described integrated multimedia digital signal processing module comprises TS stream interface module, high speed digital signal processor, buffer, display interface circuit, audio frequency processing circuit, miniature portable hard drive, USB interface; The signal input part of described TS stream interface module connects the ground digital channel decoding module, its signal output part connects high speed digital signal processor, described high speed digital signal processor by ARM control bus/data/address bus respectively with miniature portable hard drive, USB interface is two-way is connected, described high speed digital signal processor directly is connected with buffer is two-way, with display interface circuit, audio frequency processing circuit is unidirectional is connected.Described TS stream interface module comprises demultiplexing pre-process circuit and the audio frequency and video PES output unit and the control data interface circuit that are connected with this demultiplexing pre-process circuit.
After described digital television signal enters TS stream interface module, finish the conversion of audio frequency and video output format through audio frequency and video PES/ES stream software decode, call directly then that display driving software plays sound or image, or remake TV Signal recording/audio/video coding and the audio/video information data is stored by calling the hard-disc storage program.
For making things convenient for the digital television program supplier to carry out toll administration, described integrated multimedia digital signal processing module selectively comprises a condition reception intelligent card; Described high speed digital signal processor is connected with the condition reception intelligent card is two-way by ARM control bus/data/address bus.
Hardware driving software, multimedia process software and embedded real-time operating system software that the above-mentioned embedded software program P that is installed in the integrated multimedia digital signal processing module comprises the application software that is positioned at the upper strata and is positioned at bottom.Such program structure has guaranteed that the utility model device has the effectiveness of higher information processing and message transmission and allocative abilities flexibly.
Compared with prior art, portable digital television receiver of the present utility model has following advantage: utilize the mutual co-ordination of high performance arm processor and high-speed dsp, realized simultaneously that in highly integrated system Digital Television receives and the broadcast and the storage of other multiple form multi-media signals, and the function of data content exchange.For following amusement and study provide an ideal platform.
Description of drawings
The drawing of accompanying drawing is described as follows:
Fig. 1 is the composition schematic diagram that the utlity model has the portable digital television receiver of storage and multi-media player function;
Fig. 2 is the functional-block diagram of the utility model embodiment one;
Fig. 3 is the functional-block diagram of the utility model embodiment two;
Fig. 4 is the composition schematic diagram of TS stream interface module among Fig. 3;
Fig. 5 is to the flow chart of digital processing television signals through multimedia digital processing module after the TS stream interface module;
Fig. 6 is the software pie graph that the utlity model has the portable digital television receiver of storage and multi-media player function.
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment
Above-mentioned purpose of the present utility model can be achieved through the following technical solutions:
As shown in Figure 1, of the present utility model have storage and comprise with the portable digital television receiver of multi-media player function: digital TV antenna 1, the ground digital television channels decoder module 2 that links to each other with digital TV antenna 1, ground digital television signal decoding and code storage and other multi-media signals broadcast of decoding that has that links to each other with television channel decoder module 2 are connected flat-panel monitor 4 and Audio Players 5 respectively with the integrated multimedia digital signal processing module 3 of code storage, the signal output part of this integrated multimedia digital signal processing module 3.Digital TV antenna 1 adopts undersized Digital Television dedicated antenna.Television channel decoder module 2 can adopt the scheme of different digital television transmission standard according to different applied environments, comprises the standard DMB-T of U.S. mark ATSC, Europe superscript DVB-T, day mark ISDB-T, Tsing-Hua University etc.For the image quality requirement of the Digital Television that realizes single-definition at least, the resolution of flat-panel monitor 4 is not lower than 640 * 480 in addition.The utility model is a kind of product that designs with multimedia/storage set of applications that the portable type ground Digital Television is received.
Integrated multimedia digital signal processing module 3 of the present utility model has been gathered an Embedded high-performance arm processor and high performance DSP and has been handled, the TMS320DM270 of TI, and TMS320DM642 adopts in this programme respectively.According to being to adopt the hardware mode or the selection of software mode to the terrestrial DTV source coding, integrated multimedia digital signal processing module 3 of the present utility model is divided into plain edition and two kinds of embodiment of enhancement mode, and division is as follows:
Embodiment one, and the terrestrial DTV source coding is realized (plain edition) with the external hardware mode, as shown in Figure 2.Adopt the Digital Television source coding circuit 3a that optimizes under the control of ARM micro controller system, to realize the audio decoder of Digital Television and deliver to television audio treatment circuit 3b, the vision signal of exporting the CCIR601 form in addition is to high-speed dsp processor 31, source coding circuit 3a can be special-purpose digital TV set-top box IC in design, as the MB87L2250 of Fujitsu.The signal of 31 pairs of CCIR601 forms of this high-speed dsp (digital signal processor) processor carries out formats and delivers to display interface device circuit 33, high-speed dsp processor 31 and arm processor co-ordination simultaneously, the signal of CCIR601 form can be carried out format conversion, again carry out audio-visual coding, the coded format parameter is as the record in the table 1/audio-visual column, and the result is stored on the miniature portable hard drive 37.The multi-medium data of the other types on the miniature portable hard drive 37 in the integrated multimedia digital signal processing module 3 can be realized broadcast and the writing function listed as table 1.Integrated multimedia digital signal processing module 3 carries out information exchange by miniature portable hard drive 37 or USB2.0 OTG interface 36 with external device.
Embodiment two, and the terrestrial DTV source coding is realized (enhancement mode) with software mode, as shown in Figure 3.Described integrated multimedia digital signal processing module comprises TS stream interface module 3c, high speed digital signal processor 31, buffer 32, display interface circuit 33, audio frequency processing circuit 34, miniature portable hard drive 37, USB2.0 OTG interface 36; Described TS stream interface module 3c receives the TS signal of ground digital channel decoding module 2 outputs, its signal output part connects high speed digital signal processor 31, described high speed digital signal processor 31 by ARM control bus/data/address bus respectively with CA intelligent card interface 39, miniature portable hard drive 37 and 36 two-way connections of USB2.0 OTG interface, described high speed digital signal processor 31 directly with 32 two-way connections of buffer, with display interface circuit 33 and 34 unidirectional connections of audio frequency processing circuit.
The TS stream interface module 3c of the scheme of present embodiment two, realize the demultiplexing of TS signal, comprise demultiplexing pre-process circuit 3c1, and the audio frequency and video PES output unit 3c2 and the control data interface circuit 3c3 that are connected with this code stream demultiplexing circuit 3c1, as shown in Figure 4.Demultiplexing pre-process circuit 3c1 is made up of fifo buffer and FPGA.By control data interface circuit 3c3, ARM system and the collaborative work of demultiplexing pre-process circuit, (PSI) extracts and analyzes to Program Specific Information, finishes the filter of basic stream (PID) and realizes, isolate audio frequency and video ES or PES stream, finish the demultiplexing process together.Audio frequency and video PES output unit 3c2 is a dual port RAM, connects demultiplexing pre-process circuit 3c1 and high-speed dsp 31.
Fig. 5 is to the flow chart of digital processing television signals through multimedia digital processing module after the TS stream interface module; Through the signal of TS stream interface module,, finish the audio/video decoding of MPEG2 standard and handle through audio frequency and video PES/ES stream software decode 5a.Pass through audio frequency and video output format conversion 5b afterwards, audio signal realizes that DAC handles, and vision signal converts the output format that display needs to, and delivers to Audio Players 5 respectively and flat-panel monitor 4 displays the play.According to associative operation, the audio frequency and video of the number format after the MPEG2 decoding number, can also pass through TV Signal recording/audio/video coding [5c] simultaneously handles, realize the digital multimedia compressed encoding processing of MPEG4/MP3 (referring to table 1 record class column) form, and store by the hard disk that calls hard-disc storage program realization viewdata.
Embedded software program P divides two-layer formation, above one deck be application software 6a, bottom software is by hardware driving software 6b, multimedia process software storehouse 6c, embedded real-time operating system 6d forms (referring to Fig. 6).
The function of application software 6a comprises the processing of man-machine interface, electronic program guides, and the support of the various services that service provider is provided in the data broadcasting mode.
Hardware driving software 6b comprises the driver of related hardware in the machine, as radio-frequency tuner, channel decoder, source decoder, and IDE hard-disk interface, OSD, USB2.0 OTG interface, portable power source management, display driver circuit, sound processing unit etc.
Multimedia is handled the record and the broadcast of video that storehouse 6c comprises multiple form, picture, sound, specifically referring to table 1.
Embedded real-time operating system 6d is the operating system that develops on the Linux basis of open source code, realizes that operating system application of the present utility model also can utilize other special-purpose embedded OS such as VxWorks, PSOS, OS2 etc.
Table 1 is by the utlity model has the portable digital television receiver treatable multimedia form of storage with multi-media player function.
| Function combinations | Resolution | Video frame rate f/s | Bit stream | The function remarks | ||
| Play | Audio-visual | MPEG-4 SP decoding+MP3 decoding | 720×480 | 24-30 | 4Mbps | 90 degree revolve standard; The picture convergent-divergent |
| Divx 3.11 decoding+MP3 decoding | 352×240 ， 352×288 | 30/25 | 2Mbps | 90 degree revolve standard; The picture convergent-divergent | ||
| Divx 5.x decoding+MP3 decoding | 720×480 | 24-30 | 4Mbps | 90 degree revolve standard; The picture convergent-divergent | ||
| MPEG-1 decoding+MP3 decoding | 720×480 | 24-30 | 5Mbps | 90 degree revolve standard; The picture convergent-divergent | ||
| MPEG-2 decoding+MP3 decoding | 720×480 | 24-30 | 5Mbps | 90 degree revolve standard; The picture convergent-divergent | ||
| MPEG-2 decoding+AAC decoding | 720×480 | 24-30 | 5Mbps | 90 degree revolve standard; The picture convergent-divergent | ||
| MPEG2 TS flows decoding | 720×480 | 24-30 | 6Mbps | 90 degree revolve standard; The picture convergent-divergent | ||
| Sound | The IMA decoding | Stereo/monophony | ||||
| MP3 decoding | 320Kbps | |||||
| The WMA9 audio decoder | 8-48 Kbps | |||||
| Picture | Baseline JPEG decoding | 6M pixels | 90 degree revolve standard; The picture convergent-divergent, the local amplification | |||
| The BMP decoding | 1600×12 00 | 90 degree revolve standard; The picture convergent-divergent, the local amplification | ||||
| Record | Audio-visual | MPEG-4 SP coding+IMA coding | 640×480 | 24-30 | 3Mbps | |
| MPEG-4 SP coding+MP3 coding | 640×80 | 24-30 | 3Mbps | |||
| Sound | The IMA coding | Stereo/monophony | ||||
| The MP3 coding | 320Kbps | |||||
| Picture | Baseline JPEG coding | 6M pixels |
Claims (8)
1, a kind of portable digital television receiver with storage and multi-media player function, the ground digital channel decoding module that comprise digital TV antenna, links to each other with digital TV antenna is characterized in that:
The signal output port of described channel decoding module connects the integrated multimedia digital signal processing module with digital television signal decoding and code storage and other multi-media signals decoding broadcast and code storage, the signal output part of described integrated multimedia digital signal processing module connects flat-panel monitor and Audio Players respectively, and embedded software program P also is installed in it.
2, the portable digital television receiver with storage and multi-media player function according to claim 1, it is characterized in that: described integrated multimedia digital signal processing module comprises Digital Television source coding circuit, high speed digital signal processor, television audio treatment circuit, buffer, display interface circuit, audio frequency processing circuit, miniature portable hard drive, USB2.0OTG interface; The signal input part of described Digital Television source coding circuit connects the ground digital channel decoding module, its signal output part connects high speed digital signal processor and television audio treatment circuit, described high speed digital signal processor by ARM control bus/data/address bus respectively with miniature portable hard drive, USB interface is two-way is connected, described high speed digital signal processor directly is connected with buffer is two-way, with display interface circuit, audio frequency processing circuit is unidirectional is connected.
3, the portable digital television receiver with storage and multi-media player function according to claim 1, it is characterized in that: described integrated multimedia digital signal processing module comprises TS stream interface module, high speed digital signal processor, buffer, display interface circuit, audio frequency processing circuit, miniature portable hard drive, USB interface; The signal input part of described TS stream interface module connects the ground digital television channels decoder module, its signal output part connects high speed digital signal processor, described high speed digital signal processor by ARM control bus/data/address bus respectively with miniature portable hard drive, USB interface is two-way is connected, described high speed digital signal processor directly is connected with buffer is two-way, with display interface circuit, audio frequency processing circuit is unidirectional is connected.
4, according to claim 1,2 or 3 described portable digital television receivers with storage and multi-media player function, it is characterized in that: described integrated multimedia digital signal processing module provides power supply by portable power source system.
5, according to claim 2 or 3 described portable digital television receivers with storage and multi-media player function, it is characterized in that: described integrated multimedia digital signal processing module also comprises the condition reception intelligent card; Described high speed digital signal processor is connected with the condition reception intelligent card is two-way by ARM control bus/data/address bus.
6, the portable digital television receiver with storage and multi-media player function according to claim 3 is characterized in that: audio frequency and video PES stream output unit and control data interface circuit that described TS stream interface module comprises the demultiplexing pre-process circuit and is connected with this demultiplexing pre-process circuit.
7, the portable digital television receiver with storage and multi-media player function according to claim 3, it is characterized in that: described digital television signal enters TS stream interface module, finish the conversion of audio frequency and video output format, call display driving software and play-over image or sound through audio frequency and video PES software decode, or remake TV Signal recording/audio/video coding and the audio/video information data is stored by calling the hard-disc storage program.
8, the portable digital television receiver with storage and multi-media player function according to claim 1, it is characterized in that: described embedded software program P comprises the application software that is positioned at the upper strata and is positioned at the hardware driving software of bottom, multimedia process software and embedded real-time operating system software.
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2004201026246U CN2750603Y (en) | 2004-12-17 | 2004-12-17 | Portable digital television receiver having functions of storage and multimedia play |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004201026246U CN2750603Y (en) | 2004-12-17 | 2004-12-17 | Portable digital television receiver having functions of storage and multimedia play |
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| CN2750603Y true CN2750603Y (en) | 2006-01-04 |
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| CNU2004201026246U Expired - Fee Related CN2750603Y (en) | 2004-12-17 | 2004-12-17 | Portable digital television receiver having functions of storage and multimedia play |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100423569C (en) * | 2006-02-27 | 2008-10-01 | 常州豪杰电器有限公司 | Personal portable multimedia broadcasting, recording and playing integrated machine with digital television receiver |
| CN101193028B (en) * | 2006-11-30 | 2010-08-18 | 深圳创维－Rgb电子有限公司 | A device for getting and playing multimedia data |
| CN103200433A (en) * | 2013-04-07 | 2013-07-10 | 四川长虹电器股份有限公司 | Conditional receiving system capable of near-field communication |
| CN106851217A (en) * | 2017-03-14 | 2017-06-13 | 深圳市创维群欣安防科技股份有限公司 | The coding/decoding method and system of a kind of monitoring display device |
| CN107705250A (en) * | 2017-09-05 | 2018-02-16 | 云南电网有限责任公司昆明供电局 | A kind of image split-joint method and system based on SoC FPGA embedded systems |
-
2004
- 2004-12-17 CN CNU2004201026246U patent/CN2750603Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100423569C (en) * | 2006-02-27 | 2008-10-01 | 常州豪杰电器有限公司 | Personal portable multimedia broadcasting, recording and playing integrated machine with digital television receiver |
| CN101193028B (en) * | 2006-11-30 | 2010-08-18 | 深圳创维－Rgb电子有限公司 | A device for getting and playing multimedia data |
| CN103200433A (en) * | 2013-04-07 | 2013-07-10 | 四川长虹电器股份有限公司 | Conditional receiving system capable of near-field communication |
| CN106851217A (en) * | 2017-03-14 | 2017-06-13 | 深圳市创维群欣安防科技股份有限公司 | The coding/decoding method and system of a kind of monitoring display device |
| CN107705250A (en) * | 2017-09-05 | 2018-02-16 | 云南电网有限责任公司昆明供电局 | A kind of image split-joint method and system based on SoC FPGA embedded systems |
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| 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: 20060104 Termination date: 20121217 |