CN101330641A - Apparatus and method for transmitting multimedia flow in a wireless communication terminal - Google Patents
Apparatus and method for transmitting multimedia flow in a wireless communication terminal Download PDFInfo
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- CN101330641A CN101330641A CNA2007101230246A CN200710123024A CN101330641A CN 101330641 A CN101330641 A CN 101330641A CN A2007101230246 A CNA2007101230246 A CN A2007101230246A CN 200710123024 A CN200710123024 A CN 200710123024A CN 101330641 A CN101330641 A CN 101330641A
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Abstract
The invention provides a device and a method for transmitting the multimedia stream in a wireless communication terminal. The device for transmitting the multimedia stream in the wireless communication terminal comprises a wireless communication terminal and a terminal unit. The wireless communication terminal is used for processing the external multimedia stream and providing the processed multimedia stream for the terminal unit, and processing the multimedia stream received from the terminal unit and outputting the processed multimedia streami. The terminal unit is used for processing the multimedia stream received from the wireless communication terminal and providing the processed multimedia streaming for a user of the terminal unit, and transforming the multimedia stream from the user into the multimedia stream. Thereby, the modularity and the commonality of the wireless communication terminal are improved and the cost of the hardware is reduced.
Description
Technical field
The present invention relates to a kind of new audio frequency, the apparatus and method of video output, more specifically, relate to the transmitting device and the method for media stream in a kind of wireless communication terminal.
Background technology
Traditional voice-frequency channel of Wireless Telecom Equipment as shown in Figure 1, Wireless Telecom Equipment 110 (for example, wireless network card) by USB (Universal Serial Bus, USB) protocol interface links to each other with terminal equipment 120, and Wireless Telecom Equipment 110 is mapped as the unit equipment of a USB.Wherein, signaling that Wireless Telecom Equipment 110 receives and Internet data are by USB interface and terminal equipment 120 transmission, voice data receives by the antenna 111 of Wireless Telecom Equipment 110, deliver to DSP (Digital Signal Process after the processing through radio-frequency module 112 and baseband module 113, digital signal processor) links to each other with earphone 140 with outer microphone 130 after 114 processing and CODEC (Codeand Decode, coding and decoding chip) 115 handle.Because such Wireless Telecom Equipment does not have LCD display, limited to the relevant business (for example video call and mobile TV or the like) of video that this series products can't use 3G network to provide.
Therefore the transmitting device and the method that need media stream in a kind of wireless communication terminal with the modularity and the versatility of raising Wireless Telecom Equipment, and are saved hardware cost.Compare with the conventional audio path, this method is more general, can transmit other data except that audio frequency, comprises video.Thereby reduce the design complexities of Wireless Telecom Equipment greatly and save hardware resource reduction equipment cost.
Summary of the invention
Main purpose of the present invention is to provide the transmitting device and the method for media stream in a kind of wireless communication terminal, is used to improve the modularity and the versatility of Wireless Telecom Equipment, and saves hardware cost.
To achieve these goals, according to an aspect of the present invention, the transmitting device of media stream in a kind of wireless communication terminal comprises:
Wireless communication terminal is used to handle the media stream that receives from the outside and the media stream of handling is offered terminal equipment, and handles the media stream that receives from terminal equipment and export handled media stream; And
Terminal equipment, be used to handle the media stream that receives from wireless communication terminal and will handle after media stream offer the user of terminal equipment, and will be converted to media stream from user's multimedia messages, and the media stream after will changing offers wireless communication terminal.
Media stream can comprise voice data and/or video data.
Wireless communication terminal can comprise: reception/sending module be used for from outside reception media stream, and the media stream of self terminal equipment sends in the future; Data processing module is used to handle the media stream that is received, and the media stream of self terminal equipment is sent to reception/sending module in the future; And USB interface scheduler task module, be used to handle media stream from data processing module and terminal equipment.
USB interface scheduler task module can comprise: send buffering area and receive buffering area.
Data processing module can comprise: radio-frequency module is used to handle the media stream from reception/sending module or terminal equipment, and handled media stream is sent to baseband module; Baseband module be used to handle the media stream from radio-frequency module, and the media stream after will handling offers digital signal processor; And digital signal processor, handle from the media stream of baseband module and offer terminal equipment or reception/sending module.
Terminal equipment can comprise: the USB master controller is used to receive the media stream from wireless communication terminal, and will sends to wireless communication terminal from the media stream of central processing unit; Central processing unit is used to handle the media stream that is received, and sends it to multimedia output/output module, and handles the media stream from the multimedia input/output module, sends it to the USB master controller; And the multimedia input/output module, be used to export data, and receive media stream from the outside from central processing unit.
The multimedia input/output module can comprise a kind of or its combination in microphone, audio amplifier, earphone and the display card.
To achieve these goals, according to a further aspect in the invention, the transmission method of media stream in a kind of wireless communication terminal may further comprise the steps:
Wireless communication terminal receives media stream from the outside, and handles;
USB interface scheduler task module schedules media stream is to send it to terminal equipment; And
Terminal equipment is handled the media stream from wireless communication terminal, and provides it to the user.
To achieve these goals, according to a further aspect in the invention, the transmission method of media stream in a kind of wireless communication terminal may further comprise the steps:
Terminal equipment will be converted to media stream from user's multimedia messages, and the media stream of its conversion is offered wireless communication terminal;
USB interface scheduler task module schedules media stream; And
Wireless communication terminal is handled media stream, sends to the outside with the media stream that will handle.
By technique scheme, the present invention has improved the modularity and the versatility of Wireless Telecom Equipment, and has saved hardware cost.
Description of drawings
Fig. 1 shows the block diagram of the transmitting device of media stream in the existing wireless communications terminal;
Fig. 2 shows the block diagram according to the transmitting device of media stream in the wireless communication terminal of the embodiment of the invention;
Fig. 3 shows the flow chart according to the transmission method of media stream in the wireless communication terminal of the embodiment of the invention;
Fig. 4 shows the flow chart of the transmission method of media stream in the wireless communication terminal according to another embodiment of the present invention;
Fig. 5 shows according to the USB interface scheduler task module of the embodiment of the invention and carries out the flow chart of handling; And
Fig. 6 shows according to the USB interface scheduler task module of the embodiment of the invention and carries out the flow chart of handling.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
The objective of the invention is provides a kind of unified general-purpose interface for eat dishes without rice or wine data and the signaling of Wireless Telecom Equipment, reduces the wireless communication device design complexity, can reduce cost simultaneously.And this general interface can be used for transmitting the data of all types.
Receive audio-frequency information for the user, we handle the method for back use software with audio frequency PCM (Pulse CodeModulation from the voice data that air interface receives by DSP with wireless network card, pulse code modulation) code stream is guided to PC by USB interface, PC is delivered to the sound card of PC by upper level applications with pcm stream, finally passes to the user; Send audio-frequency information for the user, the user samples audio frequency and obtains pcm stream by the outer microphone of PC, delivered to wireless network card and then be delivered to air interface by USB interface by upper level applications.
In addition, for the video traffic under the 3G network, we can intercom video data with PC by USB interface mutually by similar method, and make full use of the hardware resources such as display card of PC.And then make this class Wireless Telecom Equipment can support the video class business under the 3G network.
Describe the present invention below with reference to the accompanying drawings in detail.
Fig. 2 shows the block diagram according to the transmitting device of media stream in the wireless communication terminal of the embodiment of the invention.
Application the present invention needs the support of following two kinds of entities, and entity 1 is wireless communication terminal (MT), is typically wireless network card and mobile phone, below is referred to as wireless communication terminal; Entity 2 is terminal equipment (te)s, is typically notebook and desktop computer, below is referred to as terminal equipment.
With reference to Fig. 2, the transmitting device of media stream comprises in a kind of wireless communication terminal: wireless communication terminal 210, be used to handle the media stream that receives from the outside and the media stream of handling is offered terminal equipment 220, and handle the media stream that receives from terminal equipment 220 and export handled media stream; And terminal equipment 220, be used to handle the media stream that receives from wireless communication terminal 210 and will handle after media stream offer the user of terminal equipment 220, and will be converted to media stream from user's multimedia messages, and the media stream after will changing offers wireless communication terminal 210.
Media stream can comprise voice data and/or video data.
Wireless communication terminal 210 can comprise: reception/sending module 211 be used for from outside reception media stream, and the media stream of self terminal equipment 220 sends in the future; Data processing module is used to handle the media stream that is received, and the media stream of self terminal equipment 220 is sent to reception/sending module 211 in the future; And USB interface scheduler task module 215, be used to handle media stream from data processing module and terminal equipment 220.
USB interface scheduler task module 215 can comprise: send buffering area and receive buffering area.
Data processing module can comprise: radio-frequency module 212 is used to handle the media stream from reception/sending module 211 or terminal equipment 220, and handled media stream is sent to baseband module 213; Baseband module 213 be used to handle the media stream from radio-frequency module 212, and the media stream after will handling offers digital signal processor 214; And digital signal processor 214, handle from the media stream of baseband module 213 and offer terminal equipment 220 or reception/sending module 211.
The multimedia input/output module can comprise a kind of or its combination in microphone, audio amplifier, earphone and the display card.
According to an aspect of the present invention, proposed the transmission method of media stream in a kind of wireless communication terminal, as shown in Figure 3, may further comprise the steps in use:
Step S302, wireless communication terminal receives media stream from the outside, and handles;
Step S304, USB interface scheduler task module schedules media stream is to send it to terminal equipment; And
Step S306, terminal equipment is handled the media stream from wireless communication terminal, and provides it to the user.
Wherein, voice data receives by the antenna 211 of Wireless Telecom Equipment 210, further handles obtaining the linear code stream of PCM by the processing of radio-frequency module 212, baseband module 213 and by digital signal processor (DSP) 214.
USB interface scheduler task 215 is handled the linear code stream of the PCM that obtains.This task is mainly finished the buffering of the linear code stream of PCM and interface work with USB is provided, and comprises that calling the data that relevant API carries out on the USB sends and Data Receiving.
According to an aspect of the present invention, proposed the transmission method of media stream in a kind of wireless communication terminal, as shown in Figure 4, may further comprise the steps in use:
Step S402, terminal equipment will be converted to media stream from user's multimedia messages, and the media stream of its conversion is offered wireless communication terminal;
Step S404, USB interface scheduler task module schedules media stream; And
Step S406, wireless communication terminal is handled media stream, sends to the outside with the media stream that will handle.
By gathering the user speech information with the external microphone of multimedia card 230 is the linear code stream of PCM, give central processing unit (CPU) 221 processing then and send to USB interface by the application program on the terminal equipment 220, after Wireless Telecom Equipment 210 is received the linear code stream of PCM, handle the linear code stream of this PCM by USB interface scheduler task 215, give digital signal processor (DSP) 214 after handling by USB interface scheduler task 215 and handle.
Digital signal processor (DSP) 214 delivers to the linear code stream of PCM to baseband module 213 and radio-frequency module 212 and handles, and finally is transmitted in the air by antenna 211.
Compare with traditional voice-frequency channel, introduce a USB interface scheduler task 215 in the method.This task is mainly finished the buffering of voice pcm stream or video flowing and interface work with USB is provided, and comprises that calling the data that relevant API carries out on the USB sends and Data Receiving.
The treatment mechanism of this scheduler task 215 can adopt two threads to realize, thread 1 and thread 2; We introduce two buffering areas in order to guarantee systematic function, send buffering area and receive buffering area, below abbreviate TX_BUF and RX_BUF respectively as.Thread 1 flow chart as shown in Figure 5, this thread at first execution in step S510 detects whether the audio or video data flow is arranged, then voice or video call have been set up in explanation if any, among the TX_BUF that beginning execution in step S520 sends by the voice that send call back function and periodically MT is received or video data, send a TX_SIG signal to thread 2 simultaneously, notice thread 2 is started working; And then execution in step S530 will be stored in the audio or video data passes that the MT among the RX_BUF will send and handle to DSP by receiving readjustment.Enter step S510 subsequently once more and detect whether the audio or video data flow is arranged, so repeatedly.
The flow chart of thread 2 as shown in Figure 6, this thread at first execution in step S610 judges whether to receive TX_SIG, if receive then illustrate and have valid data among the TX_BUF, beginning execution in step S620 calls the audio or video data of API in terminal equipment transmission TX_BUF of USB interface, simultaneously execution in step S630 input data storing that USB interface is received is in RX_BUF, for thread 1 use.Enter step S610 subsequently once more and detect whether the TX_SIG signal is arranged, so repeatedly.
The transmission of multimedia streams method that the present invention proposes except being applied to voice data, can also be applied to the data of other type, for example video data.The transmission course of entire stream is identical with voice data, and just the form of data is different.Simultaneously if video data stream, on the one hand, terminal equipment can be handed to display card equipment by CPU with the video data stream of specific format, and finally the display by terminal equipment is shown to the user; On the other hand, can give the CPU processing then and send to USB interface by external camera collection user video information by the application program on the terminal equipment.
The transmission of multimedia streams method that the present invention proposes, be characterized in: the audio frequency that breaks traditions, the method for video frequency channel, a task using Wireless Telecom Equipment directly extracts the linear code stream of voice PCM or video data by USB interface and terminal equipment and communicates, thereby effectively utilize the hardware resource (for example sound card, display card and display) on the terminal equipment, reduce the design complexities and the cost of Wireless Telecom Equipment.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. the transmitting device of media stream in the wireless communication terminal, it is characterized in that, comprise: wireless communication terminal, be used to handle the media stream that receives from the outside and the media stream of handling is offered terminal equipment, and handle the media stream that receives from described terminal equipment and export handled media stream; And
Described terminal equipment, be used to handle the media stream that receives from described wireless communication terminal and will handle after media stream offer the user of described terminal equipment, and will be converted to media stream from described user's multimedia messages, and the media stream after will changing offers described wireless communication terminal.
2. the transmitting device of media stream is characterized in that in the wireless communication terminal according to claim 1, and described media stream comprises voice data and/or video data.
3. the transmitting device of media stream is characterized in that in the wireless communication terminal according to claim 2, and described wireless communication terminal comprises:
Reception/sending module is used for receiving from the outside described media stream, and will sends from the described media stream of described terminal equipment;
Data processing module is used to handle the media stream that is received, and will be sent to described reception/sending module from the described media stream of described terminal equipment; And
USB interface scheduler task module is used to handle the described media stream from described data processing module and described terminal equipment.
4. the transmitting device of media stream is characterized in that in the wireless communication terminal according to claim 3, and described USB interface scheduler task module comprises: send buffering area and receive buffering area.
5. the transmitting device of media stream is characterized in that in the wireless communication terminal according to claim 4, and described data processing module comprises:
Radio-frequency module is used to handle the described media stream from described reception/sending module or described terminal equipment, and handled media stream is sent to baseband module;
Described baseband module be used to handle the described media stream from described radio-frequency module, and the media stream after will handling offers digital signal processor; And
Described digital signal processor is handled from the described media stream of described baseband module and is offered described terminal equipment or described reception/sending module.
6. the transmitting device of media stream is characterized in that in the wireless communication terminal according to claim 5, and described terminal equipment comprises:
The USB master controller is used to receive the described media stream from described wireless communication terminal, and will send to described wireless communication terminal from the described media stream of central processing unit;
Described central processing unit is used to handle the media stream that is received, and sends it to multimedia output/output module, and handles the described media stream from described multimedia input/output module, sends it to described USB master controller; And
Described multimedia input/output module is used to export the data from described central processing unit, and receives the media stream from the outside.
7. the transmitting device of media stream is characterized in that in the wireless communication terminal according to claim 6, and described multimedia input/output module comprises a kind of or its combination in microphone, audio amplifier, earphone and the display card.
8. the transmission method of media stream in the wireless communication terminal is characterized in that, may further comprise the steps:
Wireless communication terminal receives media stream from the outside, and handles;
The described media stream of USB interface scheduler task module schedules is to send it to terminal equipment; And
Described terminal equipment is handled the described media stream from described wireless communication terminal, and provides it to the user.
9. the transmission method of media stream is characterized in that in the wireless communication terminal according to claim 8, and described media stream comprises voice data and/or video data.
10. the transmission method of media stream in the wireless communication terminal is characterized in that, may further comprise the steps:
Terminal equipment will be converted to media stream from user's multimedia messages, and the media stream of its conversion is offered wireless communication terminal;
The described media stream of USB interface scheduler task module schedules; And
Described wireless communication terminal is handled described media stream, sends to the outside with the described media stream that will handle.
11. the transmission method of media stream is characterized in that in the wireless communication terminal according to claim 10, described media stream comprises voice data and/or video data.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007101230246A CN101330641A (en) | 2007-06-22 | 2007-06-22 | Apparatus and method for transmitting multimedia flow in a wireless communication terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007101230246A CN101330641A (en) | 2007-06-22 | 2007-06-22 | Apparatus and method for transmitting multimedia flow in a wireless communication terminal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102256099A (en) * | 2011-06-20 | 2011-11-23 | 中兴通讯股份有限公司 | Parameter control method and device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102256099A (en) * | 2011-06-20 | 2011-11-23 | 中兴通讯股份有限公司 | Parameter control method and device |
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Application publication date: 20081224 |