CN201114558Y - Service switch device for mobile multimedia broadcast terminal - Google Patents
Service switch device for mobile multimedia broadcast terminal Download PDFInfo
- Publication number
- CN201114558Y CN201114558Y CNU2007201765260U CN200720176526U CN201114558Y CN 201114558 Y CN201114558 Y CN 201114558Y CN U2007201765260 U CNU2007201765260 U CN U2007201765260U CN 200720176526 U CN200720176526 U CN 200720176526U CN 201114558 Y CN201114558 Y CN 201114558Y
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- frame
- multiplexed
- service
- switching device
- device shifter
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Abstract
The utility model provides a service switching device of a mobile multimedia broadcasting terminal, comprising a first analytical element which is arranged on the terminal and is used for receiving and analyzing a multiplex frame with the multiplex frame number being O to get the related controlling information, a second analytical element used for receiving and analyzing a present multiplex frame to get the related data of the multiplex frame, a third analytical element used for analyzing a target multiplex subframe in a multiplex subframe according to the related data to get the related information of target multimedia service, and a setting playing unit used for setting related parameters of a video decoder and an audio decoder and starting the playing of the target multimedia service after I frame of the target multimedia service is received. Therefore, by adopting the device, after the related parameters are obtained and the related units are set and modified, the internal service switching function of a multiplex frame can be finished until the I frame of the target service appears.
Description
Technical field
The utility model relates to the digital mobile communication field, more specifically, relates to a kind of professional switching device shifter of mobile multi-media broadcast terminal, and the portable terminal of using this device.
Background technology
In recent years, digital mobile multimedia broadcasting technology and standard evolution are rapid, for example (the digital video broadcast-handheld formula receives Ou Zhou DVB-H: Digital Video BroadcastHandheld), the MediaFLO of the U.S. (the single forward link of medium: Media ForwardLink Only) and China CMMB (Mobile Multimedia Broadcasting: China MobileMultimedia Broadcasting) etc., they provide many service content for its terminal use, such as, advertisement, weather forecast, news, sports cast, variety, the multimedia broadcasting play, programs such as film, the user can select the service program of Mobile Multimedia Broadcasting according to the hobby of oneself.
Mobile Multimedia Broadcasting adopts time division way to send MBMS service, and the duration of its broadcast channel frame is 1 second, is made up of 40 25 milliseconds of time slots, and one or more time slots can carry the data of a broadcasting multiplex frame encapsulation.In the multiplexed frame structure of Mobile Multimedia Broadcasting, multiplexed frame is divided into multiplex frame head, multiplexed frame payload and fills three parts.(multiplexed frame 0 be used for communicating control information) comprises a plurality of multiplexed sub frames in a multiplexed frame, and each multiplexed sub frame can carry a multimedia service, and first multiplexed sub frame defaults to the multimedia service that full screen shows.The structure of multiplexed frame as shown in Figure 1.
Each multiplexed sub frame includes video data and voice data.Video data wherein mainly comprises three kinds of image encoding frames, I frame, B frame, P frame.The I frame is intraframe coding, can independently decode.B frame and P frame adopt interframe encode, can not independently decode.
Terminal can be switched between a plurality of multimedia services according to control information.Owing to need use the various parameters of multiplexed frame and multiplexed sub frame when terminal is switched, therefore need provide a kind of terminal that makes to finish professional device for switching.
The utility model content
The utility model provides a kind of professional switching device shifter of mobile multi-media broadcast terminal, and it makes terminal can carry out the business switching of a multiplexed frame inside by the relevant information in multiplex frame head and the multiplexed sub frame.
The utility model provides a kind of professional switching device shifter of mobile multi-media broadcast terminal, and it can comprise: first resolution unit, be positioned on the terminal, and be used to receive and resolve multiplexing frame number and be 0 multiplexed frame, the control information that obtains being correlated with; Second resolution unit is used for receiving and resolving current multiplexed frame, obtains the related data of multiplexed frame; The 3rd resolution unit is used for according to related data, resolves the target multiplexed sub frame in the multiplexed sub frame, obtains target multimedia service relevant information; And broadcast unit is set, be used to be provided with the relevant parameter of Video Decoder and audio decoder, and when receiving the I frame of target multimedia service, the broadcast of beginning target multimedia service.
According to the utility model, control information can comprise following at least a: network information table, electron service instruction, period service duplexing configuration list and service allocation list.
Related data can comprise following at least a: the coding of the number of multiplexed sub frame, the length of multiplexed sub frame and multiplexed sub frame.
In addition, target multimedia service relevant information can comprise following at least a: video algorithm type, video code rate indication, image show indication, resolution indication and frequency frame.
Relevant parameter can comprise following at least a: decoding algorithm and image display frame are frequently.
According to the utility model, a kind of mobile multi-media broadcast terminal has also been proposed, it has used above-mentioned professional switching device shifter.
By the utility model, finish relevant parameter obtain with correlation unit modification is set after, wait for that the I frame of target service occurs, just can finish the professional handoff functionality of a multiplexed frame inside.
Other features and advantages of the utility model will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the utility model.The purpose of this utility model and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide further understanding of the present utility model, and constitutes the part of specification, is used from explanation the utility model with embodiment one of the present utility model, does not constitute restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of multiplexed frame; And
Fig. 2 is the cabinet figure according to the professional switching device shifter of mobile multi-media broadcast terminal of the present utility model.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the utility model, and be not used in qualification the utility model.
As shown in Figure 1, Fig. 1 is the structural representation of multiplexed frame.Fig. 2 is the block diagram according to the professional switching device shifter 200 of mobile multi-media broadcast terminal of the present utility model.Below in conjunction with Fig. 1 and Fig. 2 the utility model is described.
As shown in Figure 2, this device comprises: first resolution unit 202, be positioned on the terminal, and be used for receiving and resolving multiplexed frame 0, the control information that obtains being correlated with; Second resolution unit 204 is used for receiving and resolving current multiplexed frame, obtains the related data of multiplexed frame; The 3rd resolution unit 206 is used for according to related data, resolves the target multiplexed sub frame in the multiplexed sub frame, obtains target multimedia service relevant information; And broadcast unit 208 is set, be used to be provided with the relevant parameter of Video Decoder and audio decoder, and when receiving the I frame of target multimedia service, the broadcast of beginning target multimedia service.
Wherein, control information comprises following at least a: network information table, electron service instruction, period service duplexing configuration list and service allocation list.
Related data comprises following at least a: the coding of the number of multiplexed sub frame, the length of multiplexed sub frame and multiplexed sub frame.
In addition, target multimedia service relevant information comprises following at least a: video algorithm type, video code rate indication, image show indication, resolution indication and frequency frame.
Relevant parameter comprises following at least a: decoding algorithm and image display frame are frequently.
Should be appreciated that at this, use the multi-media broadcast terminal of above-mentioned professional switching device shifter can comprise mobile phone, PDA, handheld terminal and mobile TV etc.
In sum, adopt the technical solution of the utility model, can finish relevant parameter obtain with correlation unit modification is set after, wait for that the I frame of target service occurs, just can finish the professional handoff functionality of a multiplexed frame inside.
Be preferred embodiment of the present utility model only below, be not limited to the utility model, for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (6)
1. the professional switching device shifter of a mobile multi-media broadcast terminal is characterized in that, comprising:
First resolution unit is positioned on the terminal, is used to receive and resolve multiplexing frame number and is 0 multiplexed frame, the control information that obtains being correlated with;
Second resolution unit is used for receiving and resolving current multiplexed frame, obtains the related data of described multiplexed frame;
The 3rd resolution unit is connected to described second resolution unit, is used for according to described related data, resolves the target multiplexed sub frame in the multiplexed sub frame, obtains target multimedia service relevant information; And
Broadcast unit is set, is used to be provided with the relevant parameter of Video Decoder and audio decoder, and when receiving the I frame of described target multimedia service, begin the broadcast of described target multimedia service.
2. professional switching device shifter according to claim 1 is characterized in that, described control information comprises following at least a: network information table, electron service instruction, period service duplexing configuration list and service allocation list.
3. professional switching device shifter according to claim 1 is characterized in that, described related data comprises following at least a: the coding of the number of multiplexed sub frame, the length of multiplexed sub frame and multiplexed sub frame.
4. professional switching device shifter according to claim 1 is characterized in that, described target multimedia service relevant information comprises following at least a: video algorithm type, video code rate indication, image show indication, resolution indication and frequency frame.
5. professional switching device shifter according to claim 1 is characterized in that, described relevant parameter comprises following at least a: decoding algorithm and image display frame are frequently.
6. a mobile multi-media broadcast terminal has each described professional switching device shifter in the claim 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201765260U CN201114558Y (en) | 2007-09-17 | 2007-09-17 | Service switch device for mobile multimedia broadcast terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201765260U CN201114558Y (en) | 2007-09-17 | 2007-09-17 | Service switch device for mobile multimedia broadcast terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201114558Y true CN201114558Y (en) | 2008-09-10 |
Family
ID=39966307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201765260U Expired - Fee Related CN201114558Y (en) | 2007-09-17 | 2007-09-17 | Service switch device for mobile multimedia broadcast terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201114558Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104240714A (en) * | 2014-09-30 | 2014-12-24 | 福州瑞芯微电子有限公司 | Audio decoding device and method |
-
2007
- 2007-09-17 CN CNU2007201765260U patent/CN201114558Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104240714A (en) * | 2014-09-30 | 2014-12-24 | 福州瑞芯微电子有限公司 | Audio decoding device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080910 Termination date: 20140917 |
|
| EXPY | Termination of patent right or utility model |