CN101325676A - Device for decoding audio and video - Google Patents
Device for decoding audio and video Download PDFInfo
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- CN101325676A CN101325676A CNA2007100749477A CN200710074947A CN101325676A CN 101325676 A CN101325676 A CN 101325676A CN A2007100749477 A CNA2007100749477 A CN A2007100749477A CN 200710074947 A CN200710074947 A CN 200710074947A CN 101325676 A CN101325676 A CN 101325676A
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Abstract
The invention provides an audio/video decoding device, comprising a micro processing unit MCU, an audio/video output port and a USB interface, the USB interface is connected with the MCU in order to externally connect to a mobile storage apparatus in which media resources are stored; the MCU is connected with the audio/video output port in order to decode the media resources transmitted by the USB interface and output audio/video signals to the audio/video output port. The technical proposal provided by the invention can satisfy the requirements of a majority of CRTs for civil application or small-size flat panel TV without the USB interface and having external connection with the mobile storage apparatus like USB, thus possessing a more extended support for the audio/video formats.
Description
Technical field
The invention belongs to the audio frequency and video technical field, relate in particular to the technology that audio-video document is decoded.
Background technology
Digital products such as mobile phone, digital camera, MP3/MP4 player, USB flash disk, portable hard drive are penetrated into the every nook and cranny in our life already.Simultaneously, also provide the media resource of many various forms on the Internet, the user can directly download interested resource to the USB memory device, to watch in different places from the Internet.The decoding of media resource has following several mode in these USB memory devices:
1, adopting PC to decode watches: the method utilizes software to carry out the decoding of audio frequency and video, and different media formats can be resolved by different players, so the media formats of its support is more comprehensive.But the limitation of computer monitor size also shows especially out, and will to use the resource in the USB device for the user who does not have computer also be a thing that can not realize;
2, utilize DMA (Digital Media Adaptor, DMA) dissection process USB device resource: this mode generally is to adopt the decoding of decoding chip hardware or carry out software decode by the stronger DSP of disposal ability (Digital Signal Processing, digital signal processor).Often cost is higher for the DMA device like this, and operation is complicated, is difficult for using for domestic consumer.Simultaneously, DMA device on the market needs the file of software decode not decode for RM/RMVB form more common on the network etc. now, has significant limitation;
3, utilize the USB interface of high-end TV to resolve: many large scale high-end TVs have adopted USB interface, it can receive plays multiple signal source in the USB device, realization is to the selection of following one's inclinations of program source, and development of television also is to classify USB interface as the high-end TV standard configuration from now on.This type of high-end TV employing increases USB decoding function module and realizes the USB function in TV.What its decoding process adopted is the mode of hardware IC decoding, equally also is to decode for the RM/RMVB formatted file.Simultaneously, this method can not satisfy the application demand of low side TV.
Therefore, be necessary to provide a kind of intermediate conversion device of USB device audio/video decoding, the resource in the USB device is decoded, the output audio-video signal is watched to TV.
Summary of the invention
The object of the present invention is to provide a kind of device for decoding audio and video, be intended to solve the television set that does not have USB interface that exists in the prior art is play the media file in the external movable storage device by USB interface problem.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of device for decoding audio and video, described device comprises microprocessor MCU, audio frequency and video output port and USB interface, wherein:
Described USB interface links to each other with described MCU, is used for external movable storage device, stores media resource in the described movable storage device;
Described MCU links to each other with described audio frequency and video output port, is used for decoding by the described media resource of described USB interface transmission, and the output audio-video signal is to described audio frequency and video output port.
Described audio frequency and video port links to each other with television set, is used for described audio-video signal is outputed to described television for play.
Described device also comprises the remote control processing module, is transferred to described MCU decoding after being used to receive the remote signal that the user sends by remote controller, and described MCU also is used for controlling according to decoded result the operation of described device for decoding audio and video.
Described device also comprises memory, is used to store required driver and the feature operation program of described device for decoding audio and video operation.
Described operation interface comprises main interface and secondary interface, and described main interface comprises film, music, picture and the text option, and the confession user selects the type of the media resource of needs broadcast.
Described main interface also comprises option is set, and finishes in the following operation one or multinomial for the user: mutual copy, speech selection or the television system of media resource are selected in deleted file, two the external movable storage devices.
Described audio frequency and video output port comprises binaural audio signal output port and video-out port.
Described video-out port comprises composite video signal CVBS output port and/or color difference signal YPbPr output port.
Described MCU also is used for calling the RM of described movable storage device and/or the media resource decoding software of RMVB form, and the RM of the storage in the described movable storage device and/or the media resource of RMVB form are decoded.
Described movable storage device is two or more, and the media resource that described MCU also is used for calling a storage of described two or more movable storage devices stores described two or more movable storage devices in another.
The present invention overcomes the deficiencies in the prior art, a kind of middle USB switching device is provided, after utilizing this device the resource of USB device can be carried out decoding processing, output CVBS (composite video signal) or YPbPr (color difference signal) and dual track analogue audio frequency are play to TV, simultaneously, can be implemented under the condition that does not have computer, the mutual copy function of two USB device contents, with CRT that satisfies the use of most of families or the demand that does not have the movable storage device playing media files such as small size panel TV circumscribed USB of USB interface, supported the more audio frequency and video form of horn of plenty.
Description of drawings
Fig. 1 is an embodiment of the invention system construction drawing;
Fig. 2 is an embodiment of the invention flow chart.
Embodiment
Technical scheme provided by the invention is: a kind of middle USB switching device is provided, after utilizing this device the media resource of storing in the movable storage device can be carried out decoding processing, output CVBS (composite video signal) or YPbPr (color difference signal) and dual track analogue audio frequency are play to TV, simultaneously, can be implemented under the condition that does not have computer, the mutual copy function of two movable storage device contents is with CRT that satisfies the use of most of families or the demand that does not have the external movable storage device playing media file of small size panel TV of USB interface.
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In the embodiment of the invention, movable storage device is that example describes with the USB device, and other movable storage device such as portable hard drive etc. all can adopt technical scheme provided by the invention, and this does not give unnecessary details.
See also Fig. 1, device for decoding audio and video of the present invention mainly comprises MCU, USB interface, audio and video output interface, memory and infrared remote control interface.Wherein:
MCU is used to carry out the strong value decoding of decoding, the generation of operation interface, remote controller of audio frequency and video, the processing of calling different player scheduling algorithms;
USB interface is used to connect the equipment that other store video resource, video resource is transferred to MCU by USB interface decode.In the present invention, provide two usb bus interfaces, can connect two USB device simultaneously, make the operation of content by remote controller of these two USB device just can realize mutual copy function;
Audio and video output interface by corresponding signal lines, transfers to the mixed video signal input or the color difference signal input of television set, for television for play with decoded audio-video signal.It is two kinds of format videos of line output CVBS/YPbPr and left and right sides audio frequency also, exportable like this composite video and audio frequency are given on the low side CRT TV that has only the AV input terminal and play, also the aberration vision signal of exportable high definition and audio frequency are given to have in the high-end TV and play, and adaptability is wider;
Store the required interface generator of this device for decoding audio and video in the memory.Option of operation such as have film, music, picture, text on this main interface, be provided with, secondary interface is the folder content in the USB device, operations such as all media play, time-out, editor all can be finished by remote controller.
The infrared remote control interface receives the control signal that the user sends by remote controller, by the strong value of MCU decoding, and operates accordingly.As long as that the button of respective remote control possesses basically is left and right, suspend, stop, last one, next, screen show, determine that these several buttons just can finish feature operations such as broadcast, file selection, document copying, deletion.
The groundwork principle of device for decoding audio and video of the present invention is: by USB interface the media resource in the USB device is transferred to this device, through after the decoding processing of MCU, export CVBS/YPbPr and left and right sides analogue audio frequency simultaneously and give TV, watch with different video interface.Simultaneously, also can call the audio-video document that the player of installing on the USB device is play the RM/RMVB form, export to TV by MCU.And the mutual copy function of different USB device contents needs only remote controller, just can realize.
Fig. 2 is the flow chart of the embodiment of the invention, specifically comprises the steps: the device electrifying startup, occurs starting picture, and each function button icon of film, picture, music, text, setting is arranged above.Whether equipment one powers on and will detect USB device and plug, if there is not USB device, then rests on and start the interface, and prompting " no USB device " information, wait for that the user inserts USB device; If plugged USB device, then prompting " USB device is inserted, and waits for user's straighforward operation " information, MCU carries out carrying out the classification of media resource according to picture, text, music, film form simultaneously.Left and right press key on user's operating operation remote controller selects picture, text, music, film to carry out the broadcast of different resource. when carrying out the broadcast of film and music, it is the audio-video document of which kind of form that MCU can resolve earlier, the file of forms such as MPG, MPEG, AVI, JPEG/N-JPEG, BMP, PNG, GIF, TIFF, PM3, WMA, WAV, DIVX, XVID, VOB in this way, can utilize the MPEG-1/2/4 hardware decoding function module of this MCU to decode, output CVBS/YPbPr and left and right acoustic channels are to TV; And the RM/RMVB formatted file, MCU can not directly carry out the hardware decoding, if playing, such file can take the software decode mode promptly in the USB device corresponding player to be installed, can list player after the user selects files selects for the user, play such as having selected REALPLAYER, MCU will respond user's straighforward operation so, access the decoding processing that the REALPLAYER player carries out software, equally also be that output CVBS/YPbPr and left and right sound track signals arrive TV, watch for the user.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, a kind of device for decoding audio and video is characterized in that, described device comprises microprocessor MCU, audio frequency and video output port and USB interface, wherein:
Described USB interface links to each other with described MCU, is used for external movable storage device, stores media resource in the described movable storage device;
Described MCU links to each other with described audio frequency and video output port, is used for decoding by the described media resource of described USB interface transmission, and the output audio-video signal is to described audio frequency and video output port.
2, device according to claim 1 is characterized in that, described audio frequency and video port links to each other with television set, is used for described audio-video signal is outputed to described television for play.
3, device according to claim 1, it is characterized in that, described device also comprises the remote control processing module, be transferred to described MCU decoding after being used to receive the remote signal that the user sends by remote controller, described MCU also is used for controlling according to decoded result the operation of described device for decoding audio and video.
4, device according to claim 1 is characterized in that, described device also comprises memory, is used to store required driver and the feature operation program of described device for decoding audio and video operation.
5, device according to claim 4 is characterized in that, described operation interface comprises main interface and secondary interface, and described main interface comprises film, music, picture and the text option, and the confession user selects the type of the media resource of needs broadcast.
6, device according to claim 5, it is characterized in that, described main interface also comprises option is set, and finishes in the following operation one or multinomial for the user: mutual copy, speech selection or the television system of media resource are selected in deleted file, two the external movable storage devices.
7, device according to claim 1 is characterized in that, described audio frequency and video output port comprises binaural audio signal output port and video-out port.
8, device according to claim 7 is characterized in that, described video-out port comprises composite video signal CVBS output port and/or color difference signal YPbPr output port.
9, device according to claim 1, it is characterized in that, described MCU also is used for calling the RM of described movable storage device and/or the media resource decoding software of RMVB form, and the RM of the storage in the described movable storage device and/or the media resource of RMVB form are decoded.
10, device according to claim 1, it is characterized in that, described movable storage device is two or more, and the media resource that described MCU also is used for calling a storage of described two or more movable storage devices stores described two or more movable storage devices in another.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100749477A CN101325676A (en) | 2007-06-13 | 2007-06-13 | Device for decoding audio and video |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100749477A CN101325676A (en) | 2007-06-13 | 2007-06-13 | Device for decoding audio and video |
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| Publication Number | Publication Date |
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| CN101325676A true CN101325676A (en) | 2008-12-17 |
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| CNA2007100749477A Pending CN101325676A (en) | 2007-06-13 | 2007-06-13 | Device for decoding audio and video |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101646031A (en) * | 2009-05-18 | 2010-02-10 | 上海闻泰电子科技有限公司 | Mobile terminal for supporting RMVB video format |
| CN102572583A (en) * | 2011-12-26 | 2012-07-11 | Tcl集团股份有限公司 | Multimedia play system and play method |
| CN103297845A (en) * | 2013-04-26 | 2013-09-11 | 东莞宇龙通信科技有限公司 | Method and son-machine for realizing media playing |
| CN103863211A (en) * | 2012-12-13 | 2014-06-18 | 深圳市赛格导航科技股份有限公司 | Vehicle-mounted multimedia management method and device |
| CN104270696A (en) * | 2014-06-06 | 2015-01-07 | 深圳市实益达科技股份有限公司 | Broadcasting power-amplification sound system based on 4K Blu-ray player |
| CN105721945A (en) * | 2016-02-02 | 2016-06-29 | 四川长虹电器股份有限公司 | Method for playing iso mirror image film in local area networkonline with television |
-
2007
- 2007-06-13 CN CNA2007100749477A patent/CN101325676A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101646031A (en) * | 2009-05-18 | 2010-02-10 | 上海闻泰电子科技有限公司 | Mobile terminal for supporting RMVB video format |
| CN102572583A (en) * | 2011-12-26 | 2012-07-11 | Tcl集团股份有限公司 | Multimedia play system and play method |
| CN103863211A (en) * | 2012-12-13 | 2014-06-18 | 深圳市赛格导航科技股份有限公司 | Vehicle-mounted multimedia management method and device |
| CN103297845A (en) * | 2013-04-26 | 2013-09-11 | 东莞宇龙通信科技有限公司 | Method and son-machine for realizing media playing |
| CN104270696A (en) * | 2014-06-06 | 2015-01-07 | 深圳市实益达科技股份有限公司 | Broadcasting power-amplification sound system based on 4K Blu-ray player |
| CN105721945A (en) * | 2016-02-02 | 2016-06-29 | 四川长虹电器股份有限公司 | Method for playing iso mirror image film in local area networkonline with television |
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Application publication date: 20081217 |