CN2615979Y - Broadcasting apparatus for MPEG audio-video frequency and caption data - Google Patents
Broadcasting apparatus for MPEG audio-video frequency and caption data Download PDFInfo
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- CN2615979Y CN2615979Y CN 03245096 CN03245096U CN2615979Y CN 2615979 Y CN2615979 Y CN 2615979Y CN 03245096 CN03245096 CN 03245096 CN 03245096 U CN03245096 U CN 03245096U CN 2615979 Y CN2615979 Y CN 2615979Y
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Abstract
The utility model relates to a broadcast device with MPEG audio and video frequency and subtitling data, comprising a central processing unit, a DVD optical reader, a MPEG decoding device, a subtitling decoding device, a storage device, a signal output device, a dynamic synthesis module and a subtitling superimposed module, the DVD optical reader, the MPEG decoding device, the subtitling decoding device, the storage device and the signal output device are respectively connected with the central processing unit, and controlled by the central processing unit, the dynamic synthesis module and the subtitling superimposed module are storied in the storage device, being capable of broadcasting the super-scale audio and video frequency data and subtitling data over scale which are storied in a standard DVD disc. Thereby the broadcast time of the audio and video frequency data storied in a standard DVD disc is greatly extended, and broadcast acoustic quality and tonal range are nearly perfect, and the broadcast device is capable of leading to results of reducing cost of programming and cost of production.
Description
Technical field
The utility model relates to the storage and the play-back technology of DVD CD, is the playing device of a kind of MPEG audio frequency and video and caption data concretely.
Background technology
At present, be tending towards ripe gradually based on the DVD player of dvd pickup pick-up and MPEG1/2 decoder and DVD platform technology, yet the storage of DVD CD of the prior art and playing device thereof still exist some shortcomings, its concrete manifestation is:
One, the DVD-VIDEO disc adopts the MPEG-2 coding techniques at present, generally only can store on the DVD of a single-surface single-layer and can play 135 minutes audio, video data; For such as long-time audio/video programs such as educational programme, TV series, Kara OK songs, just must it can be stored by many DVD discs like this.This has just increased the DVD dish makes, produces and the cost of circulation, and to the use of DVD dish, carry, keeping brings inconvenience;
Two, in order to solve the little problem of DVD optical disc storage amount, a kind of KALAOK DVD CD and playing device thereof have appearred on the market.Wherein, can store a large amount of KALAOK songs on the described KALAOK DVD CD, its storage means is: voice data is compressed on the DVD CD with MIDI (Musical Instrument DigitalInterface) form, and video data and caption data also are compressed on this DVD CD.When playing the CD of this storage format, its playing principles is (as shown in Figure 1): adopt the MIDI decoder that voice data is decoded, and decoded voice data is exported separately; Adopt Video Decoder that video data is decoded, adopt subtitle decoder that captions are decoded, then decoded video data, caption data are merged output.This KALAOK DVD CD and playing device thereof, though solved the little problem of DVD CD capacity to a certain extent, its contribution on capacity is very limited; And because therefore the support of the necessary MIDI synthesizer of the DVD platform of this DVD CD makes that DVD program making cost is higher; The tone color of MIDI and range can't reach desirable level in addition, and memory space is little, cost of manufacture is high so KALAOK DVD CD and playing device thereof still exist, the defective that tone color and range are not all roses.
The utility model content
The purpose of this utility model is, the playing device of a kind of MPEG audio frequency and video and caption data is provided.It can be play the super scale audio, video data of storing on a standard DVD disc.Thereby make the reproduction time of the audio, video data stored on a standard DVD video disc prolong greatly, and it is perfect that the tone color of broadcast and range are close to, this playing device can cause reducing the result of DVD program making and production cost simultaneously.
The technical solution of the utility model is:
The playing device of a kind of MPEG audio frequency and video and caption data, comprise: CPU is characterized in that comprising: dvd pickup reading device, mpeg decode device, caption decoding device, storage device, signal output apparatus and dynamic synthesis module, subtitle superposition module;
Described dvd pickup reading device, mpeg decode device, caption decoding device, storage device, signal output apparatus connect with described CPU respectively, and are controlled by described CPU; Described dynamic synthesis module, subtitle superposition module stores are in described storage device;
Wherein:
The described dvd pickup reading device of described central processing unit controls reads the mpeg audio data from the DVD disc;
The described dvd pickup reading device of described central processing unit controls reads the MPEG video data from the DVD disc;
The described dvd pickup reading device of described central processing unit controls reads caption data from the DVD disc;
The described dynamic synthesis module of described central processing unit controls synthesizes the MPEG audio, video data with mpeg audio data and the MPEG video data that reads; And described MPEG audio, video data is sent into described mpeg decode device decode, obtain audio signal and vision signal after the decoding respectively;
The described caption decoding device of described central processing unit controls is decoded the caption data that reads, and obtains caption signal after the decoding;
The described subtitle superposition module of described central processing unit controls superposes decoded vision signal and decoded caption signal, obtains video and caption signal;
The described signal output apparatus of described central processing unit controls is with described audio signal and described video and caption signal output.
Described mpeg decode device comprises: MPEG1 decoding device and/or MPEG2 decoding device.
Described storage device comprises: dynamic data storage device and program storage; Wherein:
The described dynamic synthesis module of described central processing unit controls synthesizes the MPEG audio, video data with mpeg audio data and the MPEG video data that reads in described dynamic data storage device.
Described CPU synthesizes MPEG1 or MPEG 2 audio-video code stream to the video data and the voice data that separate in dynamic memory.
The described subtitle superposition module of described central processing unit controls superposes decoded vision signal and decoded caption signal and is meant: the literal that in the mpeg decode device caption data is generated is superimposed upon on the decoded video pictures.
The described signal output apparatus of described central processing unit controls comprises described audio signal and described video and caption signal output: described signal output apparatus is exported audio signal and caption signal synchronously.
Described playing device also comprises: the audio frequency and video digiverter; This audio frequency and video digiverter connects with described mpeg decode device; Wherein:
The video and the caption signal of the audio signal of described mpeg decode device output and the output of described subtitle superposition module are respectively the input of this audio frequency and video digiverter;
This audio frequency and video digiverter outputs signal to described signal output apparatus.
Described playing device also comprises: human-computer interaction module; This human-computer interaction module connects with described CPU; This human-computer interaction module can provide friendly human-computer interaction interface.
Described playing device also comprises: power supply; This power supply connects with described CPU; This power supply can provide electric energy.
Described playing device also comprises: casing.
The beneficial effects of the utility model are: by the playing device of a kind of MPEG audio frequency and video and caption data is provided, can play the super scale audio, video data of storing on a standard DVD disc.Thereby make the reproduction time of the sound voice data on a standard DVD video disc, stored prolong greatly, and it is perfect that the tone color of broadcast and range are close to, and can produce the good result that reduces DVD program making and production cost simultaneously.
Description of drawings
Fig. 1 is the playing principles block diagram of a DVD playing device in the prior art;
Fig. 2 is the playing principles block diagram of the utility model playing device;
Fig. 3 is the structured flowchart of the utility model playing device.
Embodiment
Below in conjunction with description of drawings embodiment of the present utility model:
Explanation of nouns:
Video data: refer to the data after raw video signal adopts the compression of MPEG1/2 VIDEO compression method; Video resolution can be: 1/4D1,1/2D1,2/3D1 or D1, and frame per second is 25 (PAL), 30 (NTSC);
Voice data: refer to the data after original audio signal adopts the compression of MPEG1/2 AUDIO compression method; The support sample rate is 48KHz, 44.1KHz, 32KHz, and quantification progression is 16bit;
Caption data: refer to comprise literal or the graph data synchronous with audio, video data;
DVD disc: refer to meet the discs of in the DVD of DVD Forum BOOK, stipulating; DVD has four kinds from physical specification, DVD-5 (single-surface single-layer), DVD-9 (single-surface double-layer), DVD-10 (two-sided individual layer), DVD-18 (two-sided bilayer); On purposes, be divided into DVD VIDEO again, DVD-AUDIO, DVD-ROM.
In this embodiment, can adopt the DVD physical format, adopt DVD-9 (single-surface double-layer) CD of UDF/ISO9660 file system is that example describes:
On described DVD-9 physics disc, store: mpeg audio data file, MPEG video data file and subtitle data files; Wherein:
Described mpeg audio data file is meant: adopt MPEG1 AUDIO LAYER2 compress technique to compress the audio data file that forms original audio signal;
Described MPEG video data file is meant: adopt MPEG VIDEO form to compress the video data file that forms raw video signal;
Described subtitle data files comprises at least: the voice data in this lteral data of the lteral data of compression and the described audio data file has corresponding relation.
Described MPEG AUDIO form comprises: MPEG1 AUDIO form, and/or MPEG2 AUDIO form.
Described MPEG VIDEO form comprises: MPEG1 VIDEO form, and/or MPEG2 VIDEO form.
Described subtitle data files also can comprise: graph data; Voice data in this graph data and the described audio data file has corresponding relation.
Voice data in described lteral data and the described audio data file has corresponding relation to be meant: the output of described lteral data and the output of described voice data are synchronous.
Voice data in described graph data and the described audio data file has corresponding relation to be meant: the output of described graph data and the output of described voice data are synchronous.
Described DVD physics disc comprises: DVD-ROM, DVD-R, DVD-RW, DVD+RW.
Also store on the described DVD physics disc: directory index file and font file.
Adopt directly described each file of storage on the DVD-9 disc of above-mentioned technology, it can store the about 60 minutes video data and the voice data of 5000 first songs on a DVD-9; And adopt MPEG1AUDIO LAYER2 compress technique audio compressed data, better than the MIDI technology tone color of other devices, range is wider; On the DVD of maturation platform, do not need to increase the MIDI synthesizer, reduced the hardware cost of product, improved the competitiveness of product in market.
A kind of MPEG audio frequency and video that employing the utility model provides and the playing device (as shown in Figure 3, its playing principles is as shown in Figure 2) of caption data are play the above-mentioned DVD-9 disc that stores program, and embodiment is as follows:
The playing device of the utility model MPEG audio frequency and video and caption data comprises: CPU, dvd pickup reading device, mpeg decode device, caption decoding device, storage device, signal output apparatus and dynamic synthesis module, subtitle superposition module;
Described dvd pickup reading device, mpeg decode device, caption decoding device, storage device, signal output apparatus connect with described CPU respectively, and are controlled by described CPU; Described dynamic synthesis module, subtitle superposition module stores are in described storage device;
Wherein:
The described dvd pickup reading device of described central processing unit controls reads the mpeg audio data from the DVD-9 disc;
The described dvd pickup reading device of described central processing unit controls reads the MPEG video data from the DVD-9 disc;
The described dvd pickup reading device of described central processing unit controls reads caption data from the DVD-9 disc;
The described dynamic synthesis module of described central processing unit controls synthesizes the MPEG audio, video data with mpeg audio data and the MPEG video data that reads; And described MPEG audio, video data is sent into described mpeg decode device decode, obtain audio signal and vision signal after the decoding respectively;
The described caption decoding device of described central processing unit controls is decoded the caption data that reads, and obtains caption signal after the decoding;
The described subtitle superposition module of described central processing unit controls superposes decoded vision signal and decoded caption signal, obtains video and caption signal;
The described signal output apparatus of described central processing unit controls is with described audio signal and described video and caption signal output.
Described mpeg decode device comprises: MPEG1 decoding device and/or MPEG2 decoding device.
Described storage device comprises: dynamic data storage device and program storage; Wherein:
The described dynamic synthesis module of described central processing unit controls synthesizes the MPEG audio, video data with mpeg audio data and the MPEG video data that reads in described dynamic data storage device.
Described CPU synthesizes MPEG1 or MPEG 2 audio-video code stream to the video data and the voice data that separate in dynamic memory.
The described subtitle superposition module of described central processing unit controls superposes decoded vision signal and decoded caption signal and is meant: the literal that in the mpeg decode device caption data is generated is superimposed upon on the decoded video pictures.
The described signal output apparatus of described central processing unit controls comprises described audio signal and described video and caption signal output: described signal output apparatus is exported audio signal and caption signal synchronously.
Described playing device also comprises: the audio frequency and video digiverter; This audio frequency and video digiverter connects with described mpeg decode device; Wherein:
The video and the caption signal of the audio signal of described mpeg decode device output and the output of described subtitle superposition module are respectively the input of this audio frequency and video digiverter;
This audio frequency and video digiverter outputs signal to described signal output apparatus.
Described playing device also comprises: human-computer interaction module; This human-computer interaction module connects with described CPU; This human-computer interaction module can provide friendly human-computer interaction interface.
Described playing device also comprises: power supply; This power supply connects with described CPU; This power supply can provide electric energy.
Described playing device also comprises: casing.
As seen: the playing device that the utility model provides, can be under the instruction of CPU, video data file, the audio data file of synthetic separation of from the DVD CD, reading respectively in dynamic memory; And in the MPEG1/2 decoder module, caption data is added on the decoded video pictures;
Described playing device is reading video data and voice data respectively, under the instruction of central processing unit, in dynamic memory the video data and the voice data that separate is synthesized the MPEG1/2 audio-video code stream, and accomplishes the synchronous of audio, video data;
When playing: under the instruction of playing device in CPU,, read one section mpeg audio data file by the dvd pickup pick-up;
1) playing device by the dvd pickup pick-up, reads one section MPEG video data file under the instruction of CPU;
2) playing device by the dvd pickup pick-up, reads one section subtitle data files under the instruction of CPU;
3) playing device is under the instruction of CPU, mpeg audio data and MPEG video data synthesized to meet mpeg system specification data bag in dynamic memory;
4) playing device carries out the MPEG audio/video decoding to the packet after synthetic;
5) playing device is under the instruction of CPU, the subtitle superposition that generates according to caption data on decoded video pictures;
6) playing device can be realized the synchronous of audio frequency and video and caption data.
The beneficial effects of the utility model are: by the playing device of a kind of MPEG audio frequency and video and caption data is provided, can play the super scale audio, video data of storing on a standard DVD disc.Thereby make the reproduction time of the audio, video data stored on a standard DVD video disc prolong greatly, and it is perfect that the tone color of broadcast and range are close to, the utility model can produce the good result that reduces DVD program making and production cost simultaneously.
Above embodiment only is used to the utility model is described but not is used to limit the utility model.
Claims (11)
1. the playing device of MPEG audio frequency and video and caption data, comprise: CPU is characterized in that comprising: dvd pickup reading device, mpeg decode device, caption decoding device, storage device, signal output apparatus and dynamic synthesis module, subtitle superposition module;
Described dvd pickup reading device, mpeg decode device, caption decoding device, storage device, signal output apparatus connect with described CPU respectively, and are controlled by described CPU; Described dynamic synthesis module, subtitle superposition module stores are in described storage device;
Wherein:
The described dvd pickup reading device of described central processing unit controls reads the mpeg audio data from the DVD disc;
The described dvd pickup reading device of described central processing unit controls reads the MPEG video data from the DVD disc;
The described dvd pickup reading device of described central processing unit controls reads caption data from the DVD disc;
The described dynamic synthesis module of described central processing unit controls synthesizes the MPEG audio, video data with mpeg audio data and the MPEG video data that reads; And described MPEG audio, video data is sent into described mpeg decode device decode, obtain audio signal and vision signal after the decoding respectively;
The described caption decoding device of described central processing unit controls is decoded the caption data that reads, and obtains caption signal after the decoding;
The described subtitle superposition module of described central processing unit controls superposes decoded vision signal and decoded caption signal, obtains video and caption signal;
The described signal output apparatus of described central processing unit controls is with described audio signal and described video and caption signal output.
2. playing device according to claim 1 is characterized in that, described mpeg decode device comprises: MPEG1 decoding device and/or MPEG2 decoding device.
3. playing device according to claim 1 is characterized in that, described storage device comprises: dynamic data storage device and program storage; Wherein:
The described dynamic synthesis module of described central processing unit controls synthesizes the MPEG audio, video data with mpeg audio data and the MPEG video data that reads in described dynamic data storage device.
4. playing device according to claim 3 is characterized in that, described CPU synthesizes MPEG1 or MPEG2 audio-video code stream to the video data and the voice data that separate in dynamic memory.
5. playing device according to claim 1, it is characterized in that the described subtitle superposition module of described central processing unit controls superposes decoded vision signal and decoded caption signal and is meant: the literal that in the mpeg decode device caption data is generated is superimposed upon on the decoded video pictures.
6. playing device according to claim 3, it is characterized in that the described signal output apparatus of described central processing unit controls comprises described audio signal and described video and caption signal output: described signal output apparatus is exported audio signal and caption signal synchronously.
7. playing device according to claim 1 is characterized in that it also comprises: the audio frequency and video digiverter; This audio frequency and video digiverter connects with described mpeg decode device; Wherein:
The video and the caption signal of the audio signal of described mpeg decode device output and the output of described subtitle superposition module are respectively the input of this audio frequency and video digiverter;
This audio frequency and video digiverter outputs signal to described signal output apparatus.
8. playing device according to claim 1 is characterized in that it also comprises: human-computer interaction module; This human-computer interaction module connects with described CPU; This human-computer interaction module can provide friendly human-computer interaction interface.
9. playing device according to claim 1 is characterized in that it also comprises: power supply; This power supply connects with described CPU; This power supply can provide electric energy.
10. playing device according to claim 1 is characterized in that it also comprises: casing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03245096 CN2615979Y (en) | 2003-04-11 | 2003-04-11 | Broadcasting apparatus for MPEG audio-video frequency and caption data |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 03245096 CN2615979Y (en) | 2003-04-11 | 2003-04-11 | Broadcasting apparatus for MPEG audio-video frequency and caption data |
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| CN2615979Y true CN2615979Y (en) | 2004-05-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100350800C (en) * | 2005-06-03 | 2007-11-21 | 安凯（广州）软件技术有限公司 | MTV playing method for wireless network and wireless handheld apparatus and wireless network |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100350800C (en) * | 2005-06-03 | 2007-11-21 | 安凯（广州）软件技术有限公司 | MTV playing method for wireless network and wireless handheld apparatus and wireless network |
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