CN1567265A - Wireless multimedia transmission system and implement method thereof - Google Patents
Wireless multimedia transmission system and implement method thereof Download PDFInfo
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- CN1567265A CN1567265A CN 03142806 CN03142806A CN1567265A CN 1567265 A CN1567265 A CN 1567265A CN 03142806 CN03142806 CN 03142806 CN 03142806 A CN03142806 A CN 03142806A CN 1567265 A CN1567265 A CN 1567265A
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Abstract
This invention discloses a kind of wireless multimedia transmission system. It comprises multimedia PC, audio-video equipment. The system also comprises: wireless multimedia communication terminal, which used for acquiring multimedia resource information from multimedia PC, and transferring them to the audio-video equipment for play. The multimedia PC also has server-end service module. The wireless multimedia communication terminal connects with multimedia PC in the wireless mode, and connects with audio-video equipment. The said wireless multimedia communication terminal comprises of data dispatch unit, data output unit, control signal receiving unit, main processor, storing unit that with core management module and power supply. Besides, this invention also discloses a kind of realization method of wireless multimedia communication.
Description
Technical field
The present invention relates to the multimedia transmission technology, be meant a kind of wireless multimedia transmission system and its implementation in the front yard environment of being in especially.
Background technology
Along with the price of multimedia personal computer (PC) reduces gradually, the multimedia personal computer in the family is more and more universal, and the family multi-media personal computer can be used for realizing multiple function, comprises family's commercial affairs, education and amusement or the like.At present, along with people use and arrangement method the custom of personal computer, personal computer usually be placed in very naturally each tame study or horizontal in, the purpose of utilizing personal computer to reach amusement simultaneously seems and more and more valued by the consumer, such as: play VCD with multimedia personal computer; Show picture, the photo of being gathered with multimedia personal computer; Play the MP3 music with multimedia personal computer.Generally, the recreation center of family is arranged in the living room or the parlor of family, generally includes video equipment and audio frequency apparatus, such as: equipment such as TV, sound equipment.As can be seen, it is the study mostly that people use the place of multimedia personal computer at home, and the place of carrying out audiovisual, amusement at home is the parlor mostly.
Though multimedia personal computer can provide a lot of amusement functions to people, do not resemble TV, sound equipment can bring the incomparable audio frequency and video effect of multimedia personal computer to people; Equally, though TV, sound equipment have the audio visual effect that makes us fresh and new, but the storage medium or the storage medium of audio frequency apparatus that are video equipment all can't be preserved jumbo multimedia messages resource, and, audio ﹠ video equipment more can't realize function of surfing the Net separately, if want to enlarge memory capacity or, also need increase extra equipment, will inevitably strengthen cost of investment by the audio ﹠ video equipment online.
Up to the present, can be by the solution of TV online: place a set-top box (set-top-box) that comprises central processing unit on the TV next door, this set-top box utilizes TV as display device, direct and Internet joins and obtains Internet resources, but because the restriction on network speed and the operation ease for use, do not obtain consumer's approval, so-called ease for use is meant and makes things convenient for the user to import, make things convenient for problems such as the user controls.Simultaneously, owing to consider that from the cost angle this class set-top box major part does not have memory function, music, picture and the video file etc. that the user can not be liked store easily, so that appreciate at any time.In addition, this scheme also can't utilize TV, sound equipment to appreciate the music in the customer multi-media personal computer, picture and video file etc.
U.S. Microsoft company also proposed a kind of technology that personal computer displays is extended, relate to a kind of radio display, can operate local personal computer on the radio display of far-end, still, the functions of use of local personal computer can't be expanded for this technology.That is to say that when user's operate wireless display, other user then can't operate local personal computer again, and described radio display cost is very high, is inapplicable to domestic consumer.
Therefore, if the strong point of comprehensive multimedia personal computer of energy and audio ﹠ video equipment, adopt multimedia personal computer to store various multimedia messages resources, for example: exquisite picture, melodious music, film of shock or the like, and adopt audio or video device plays ripe in the family, not only can provide optimum amusement to enjoy, and the use of multimedia personal computer can be expanded in the family Anywhere to the user, such as parlor, living room, even the dining room or the like.But this scheme with multimedia personal computer and audio ﹠ video equipment combination someone as yet proposes concrete solution.And, if will be positioned at the multimedia personal computer in study simply links to each other with the TV or the sound equipment of the home entertainment center that is positioned at parlor or living room by cable, so, some connecting lines such as power supply, audio frequency, video will appear, not only can form the complicated cable annexation, cause rambling situation, even can be because complicated connection causes error of transmission, reduce reliability of data transmission, influence play quality.
Summary of the invention
In view of this, fundamental purpose of the present invention is to provide a kind of wireless multimedia transmission system, makes it reduce equipment cost when providing the high-quality audiovisual service for the user.
Another object of the present invention is to provide a kind of implementation method of radio multimedium transmission, can support multimedia that the wireless transmission of the media file between equipment and the audio ﹠ video equipment is provided.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of wireless multimedia transmission system comprises multimedia personal computer, audio ﹠ video equipment, and this system also comprises:
Wireless multimedia communication terminal is used for obtaining multimedia resource information from multimedia personal computer, and the information of being obtained delivered to displays the play on the audio ﹠ video equipment;
Further be provided with in the described multimedia personal computer: receive the wireless multimedia communication terminal request and the server end service module of media information is provided;
Described wireless multimedia communication terminal links to each other with the server end service module of multimedia personal computer by wireless mode, and wireless multimedia communication terminal links to each other with audio ﹠ video equipment simultaneously;
Described wireless multimedia communication terminal mainly is made up of data transmit-receive unit, data output unit, control signal receiving element, primary processor, the storage unit that is placed with the hard core control module and power supply.
This system further comprises: be used for the remote control equipment of input operation request, described remote control equipment links to each other by wireless mode with wireless multimedia communication terminal.
In the such scheme, described wireless multimedia communication terminal further comprises: audio decoding unit and video decoding unit.
A kind of implementation method of radio multimedium transmission, this method may further comprise the steps:
A. wireless multimedia communication terminal receives the operation requests of user's input, and this operation requests is sent to multimedia personal computer by wireless mode;
B. after multimedia personal computer is received action message, finish corresponding multimedia operations, and operating result is returned wireless multimedia communication terminal with wireless mode according to action message;
C. wireless multimedia communication terminal is delivered to demonstration or broadcast on the audio ﹠ video equipment with received operating result after treatment.
Described operation requests is when displaying the play audio-video document, step b further comprises: after multimedia personal computer is received this request, in its data storehouse, choose the multimedia file of appointment, then with selected multimedia file by wireless, send to wireless multimedia communication terminal continuously in the Streaming Media mode;
Step c further comprises: wireless multimedia communication terminal behind transmission path analysis and local decompress(ion), is delivered to demonstration or broadcast on the audio ﹠ video equipment with the multimedia file of being received.
Step b also further comprises:
B1. after multimedia personal computer receives that demands of media files is specified in selection that wireless multimedia communication terminal sends, judge whether to import new media file, if not, then return step b1, wait for request next time; Otherwise, execution in step b2;
B2. receive the path that needs the importing medium file of wireless multimedia communication terminal input, judge then whether specified file is the form that audio ﹠ video equipment can decompress, if not, then return error message, finish current flow process; Otherwise, send selected media file to wireless multimedia communication terminal with wireless mode.
Step b also further comprises: judge whether that the media file that is transferred to wireless multimedia communication terminal is set to the file hiding pattern, if then this document is set to stealth mode; Otherwise, finish current flow process.
This method further comprises: multimedia personal computer is configured the wireless network association attributes by the server end service module.Wherein, described wireless network association attributes comprises wireless network name, transmission data key.
This method further comprises: during the wireless multimedia communication terminal initial start, searches for available wireless network and judges whether to search, if do not search, and repeat search or finish current flow process then; If search, then continue to judge whether to find the multimedia personal computer that content service can be provided, if do not find, then repeat to search or finish current flow process; If find, judge whether to exist the multimedia personal computer that content service can be provided more than again, if exist, then select a multimedia personal computer wherein arbitrarily, otherwise, the selected multimedia personal computer that is found.
Therefore, wireless multimedia transmission system provided by the present invention and its implementation have following advantage and characteristics:
1) the present invention combines multimedia personal computer in the family and audio ﹠ video equipment, store a large amount of multimedia messages resources with multimedia personal computer, play with audio frequency and video such as TV or sound equipments, utilize ready-made device resource fully, when being embodied as the user high-quality audiovisual service be provided, greatly reduce equipment cost, be more suitable for use in most consumers.
2) the present invention links to each other with audio ﹠ video equipment the multimedia personal computer in the family by wireless mode, make the application of multimedia personal computer can expand to any space in the family, the user can use the present invention to reach the purpose of amusement whenever and wherever possible, and, the complex operations of having avoided cable to connect, reduced because cable connects the error of transmission that is caused, improved play quality, and implemented simple, flexible.
3) since the present invention when using the multimedia resource that multimedia personal computer provided, it is the audio ﹠ video equipment of utilizing in the family, show or play such as TV or sound equipment, and utilize multimedia personal computer that all operations are provided fully, therefore can utilize the function of surfing the Net of computing machine to insert Internet; And show online content or play online music, film by TV.
4) the present invention is when carrying out video demonstration or voice playing, owing to just call multimedia resource information on the multimedia personal computer by consistency operation, therefore do not influence any normal running of used multimedia personal computer, thereby improved the service efficiency of multimedia personal computer in the family.
Description of drawings
Fig. 1 forms structural representation for an embodiment of wireless multimedia transmission system practical application of the present invention;
Fig. 2 is the composition structural representation of wireless multimedia communication terminal in the wireless multimedia transmission system of the present invention;
Fig. 3 forms structural representation for the hardware of wireless multimedia communication terminal one embodiment among the present invention;
Fig. 4 is the schematic flow sheet during the wireless multimedia communication terminal initial start among the present invention;
Fig. 5 is the schematic flow sheet of radio multimedium transmission implementation method of the present invention;
Fig. 6 among the present invention from multimedia personal computer the schematic flow sheet of importing medium file;
Fig. 7 is for finishing the schematic flow sheet of radio network configuration by multimedia personal computer among the present invention.
Embodiment
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
Main thought of the present invention is exactly: the function of multimedia personal computer in the family and audio ﹠ video equipment is combined, and it is both are continuous by wireless mode, more particularly be exactly, receive the information that multimedia personal computer sends by a radio multimedium receiving trap, and the information of being received exported to show or be delivered on the audio frequency apparatus on the video equipment and play.
Fig. 1 forms structural representation for an embodiment of wireless transmitting system practical application of the present invention, and as shown in Figure 1, the left side of dot-and-dash line 3 is studies 1, and the right side of dot-and-dash line 3 is parlors 2.Local multimedia personal computer 10 in the family is positioned at the study 1 of family, the televisor 20 and the sound equipment 21 that have family to possess in the parlor 2, wireless multimedia communication terminal 22 links to each other by wired mode with televisor 20 and sound equipment 21, also can link to each other by wireless mode, wireless multimedia communication terminal 22 links to each other with local multimedia personal computer 10 by wireless mode simultaneously, so that reach best audio visual effect.When playing the multimedia messages that provides in the local multimedia personal computer 10 by TV 20, during such as picture, music, video file, local multimedia personal computer 10 is sent to wireless multimedia communication terminal 22 with vision signal with wireless mode by wireless transmitter 11, after wireless multimedia communication terminal 22 is received signal, through self processing, export on the TV 20 and show.Fig. 1 is that the present invention realizes a kind of possible configuration, and wherein, the position that local multimedia personal computer, audio ﹠ video equipment are placed can be the optional position in the family, all can apart from distance; TV 20 can be any similar user video display device, sound equipment 21 also can be any similar audio user playback equipment, described wireless transmitter 11 can be a kind of the wireless transceiver with simple reception and sending function, also can realize with wireless multimedia communication terminal 22.This multimedia system also further comprises remote control equipment 23, is used to control wireless multimedia communication terminal 22 and operates.
Wireless multimedia communication terminal 22 main being responsible among Fig. 1 are obtained multimedia messages from local multimedia personal computer 10, and the information of being obtained is displayed the play on audio ﹠ video equipment.As shown in Figure 2, this wireless multimedia communication terminal 22 is except necessary primary processor, storage unit and power supply, mainly comprise data transmit-receive unit 221, data output unit 222 and control signal receiving element 223, wherein, data transmit-receive unit 221 is used for transmitting control signal to local multimedia personal computer 10, and receives the multimedia messages of coming from local multimedia personal computer 10; Data output unit 222 is sent on the audio ﹠ video equipment that is connected with the multimedia messages that receives after treatment, and processing described here comprises which destination device analysis should be sent to the current signal of receiving, and the conversion of multi-media signal etc.; Control signal receiving element 223 is used for receiving the control signal of user's input, and the control signal that is received sent to local multimedia personal computer 10 by data transmit-receive unit 221, the control signal here can be the user by the control signal of remote control equipment input, and remote control equipment is meant that telepilot etc. has the equipment of distant control function.Wireless multimedia communication terminal 22 also is provided with unified management, dispatches the hard core control module of each cell operation, and this hard core control module generally is positioned in the storage unit of wireless multimedia communication terminal 22, and described storage unit also is used for store file data.
Fig. 3 forms structural representation for the hardware of wireless multimedia communication terminal one embodiment of the present invention, and as shown in Figure 3, wherein, primary processor 301 adopts integrated chip XScale PXA255; The data output unit mainly comprises TV pio chip 302 and the sound decoder chips 309 with Mepg2 decompress(ion) ability, respectively output image and voice signal; Wireless network transmissions in the data transmit-receive unit is selected 802.11b wireless network card 303 for use; Configuration for wireless multimedia communication terminal can realize by USB interface 305; Operation for wireless multimedia communication terminal can realize that infrared receiving chip 306 is equivalent to the control signal receiving element by infrared receiving chip 306; Power supply control for wireless multimedia communication terminal can realize by power switch 307.Also comprise some storage unit in this wireless multimedia communication terminal, 308 flash memory (FlaSh) chips for hard core control module in the storage wireless multimedia terminal shown in the figure, 310 is the Synchronous Dynamic Random Access Memory (SDRAM) of the various interim exchange media files of buffer memory.
Fig. 4 is the initial start flow process of wireless multimedia communication terminal of the present invention, this initial start process is finished by the hard core control module of wireless multimedia terminal 22, as shown in Figure 4, the specific implementation of this process is such: after the wireless multimedia terminal 22 that is positioned at parlor 2 brings into operation, near first available wireless network the search, if do not search, repeat search then, until searching or compulsory withdrawal, or finish current flow process; If search, then continue in the wireless network that searches to seek whether the local multimedia personal computer that content service can be provided is arranged, if do not find, repeat search then until searching or compulsory withdrawal, or finishes current flow process; Otherwise, judge whether in this wireless network, to find the local multimedia personal computer that content service can be provided more than, if, then require the user to select one, the selection here is meant by selected one arbitrarily of user.This that will demonstrate on TV 20 then that the user selects provides the local multimedia personal computer 10 available media files of content service, and the user just continues to select to appreciate by telepilot 23.Web search described in this process is meant and can passes through this wireless network proper communication, described personal computer search procedure generally is: the one or more local multimedia personal computer that is in open state sends the declaration information that proof exists self with broadcast mode always, after wireless multimedia terminal 22 starts, search local multimedia personal computer exactly if detect declaration information.
Based on structure shown in Figure 2, be example with environment shown in Figure 1, the specific implementation process that wireless transmitting system of the present invention displays the play is as shown in Figure 5.Need to prove, the prerequisite that the present invention carries out is: the local multimedia personal computer 10 that is in the study 1 is in the start running status all the time, and local multimedia personal computer 10 is provided with server (Sever) end service module, this Sever end service module is at the running background of computing machine, mainly is responsible for finishing the searching of reception, new media file, new media file of solicited message to the importing of wireless multimedia communication terminal, radio network configuration or the like service function.So, wireless transmission process of the present invention may further comprise the steps:
Step 501: the power supply of user's open wireless multimedia communication terminal 22 in parlor 2, launch solicited messages by telepilot 23 to wireless multimedia communication terminal 22 then, appreciate picture, music and the video file etc. that are arranged on the 1 local multimedia personal computer 10 of study as specifying.
Step 502: wireless multimedia communication terminal 22 is sent to local multimedia personal computer 10 by wireless mode with request after receiving corresponding action message from telepilot 23.
Step 503: after local multimedia personal computer 10 receives request, carry out corresponding multimedia operations, then operating result is returned wireless multimedia communication terminal 22 with wireless mode according to the solicited message of receiving.Be that demonstration or displaying video or audio file are example below with the solicit operation, after then local multimedia personal computer 10 is received this request, in its data storehouse, choose the multimedia resource of appointment by Server end service module, that is: the audio/video file appreciated of user's desire, local then multimedia personal computer 10 again with selected multimedia file by wireless, send to wireless multimedia communication terminal 22 continuously in the mode of Streaming Media.
Step 504: after wireless multimedia communication terminal 22 is received the required multimedia messages of passing back from local multimedia personal computer 10, through transmission path analysis and local decompress(ion), display the play by TV 20 and/or the sound equipment 21 that links to each other with wireless multimedia communication terminal 22 again.Here, described transmission path analysis is meant delivers to sound equipment 21 with audio file, and video file is delivered to TV 20.
In the process of appreciating the audio/video file, the user who is arranged in parlor 2 can carry out various operations to the audio/video file that is displaying the play, as directly operation on local multimedia personal computer 10, as advance, stop, F.F., the choosing next one etc., can adopt the flow process of similar above-mentioned steps 501～step 504 fully, just to carry out certain operation as solicited message, local multimedia personal computer 10 is finished corresponding operation, send the different signals that displays the play to give TV or sound equipment.If user's desire is appreciated new multimedia file, then repeated execution of steps 501～step 504 on the local multimedia personal computer 10 that is stored in study 1.
Obtain at above-mentioned multimedia messages, in the output procedure, the importing process of new media file may further comprise the steps as shown in Figure 6:
Step 601: when the user need choose new media file and appreciates by the wireless multimedia terminal in parlor 2 22 from local multimedia personal computer 10, wireless multimedia terminal 22 will select to specify demands of media files to issue local multimedia personal computer 10 by wireless mode, after local multimedia personal computer 10 is received request, importing new media funtion part in the operation Server end service module, at this moment, local multimedia personal computer 10 can be delivered to information on the wireless multimedia terminal 22 by wireless mode, is outputing to demonstration on the TV 20.
Above-mentioned importing process also can further comprise step 606,607: whether the prompting user needs file hiding specific in the media library, such as: some relate to individual privacy or do not want the file that allows other user see, if do not need to be provided with hiding, then finish; Be provided with hidingly if desired, after then this document is set to stealth mode, finish.Each step in the said process all is to be carried out by local multimedia personal computer 10 alternately, demonstrates corresponding information by TV 20 simultaneously, selects all can be imported by telepilot.
Server end service module in the local multimedia personal computer 10 can also be configured the attribute of presently used wireless network, generally, carry out mutual between local multimedia personal computer 10 and the wireless multimedia terminal 22 first by wireless mode the user, or the user is when needing the attribute of new wireless network more, and the user can hold service module that the attribute of wireless network is configured by Server.As shown in Figure 7, the process of configuring wireless network attribute is such: the radio network configuration funtion part of local multimedia personal computer 10 operation Server end service modules, whether radio network configuration funtion part prompting user needs the configuring wireless network association attributes, if do not need configuration, then withdraw from configuration flow; Configuration is then proceeded if desired.The radio network configuration funtion part points out user's input to want the wireless network name of setting up, and the encryption setting of pointing out the user whether to carry out transmitted data on network then if do not need, then finishes radio network configuration; Carry out the encryption of transmitted data on network if desired, then import transmission security key, finish configuration flow then by the user.Equally, each step in the layoutprocedure all is to be carried out by local multimedia personal computer 10 alternately, demonstrates corresponding information by TV 20 simultaneously, selects and imports and can all finish by telepilot.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (9)
1, a kind of wireless multimedia transmission system comprises multimedia personal computer, audio ﹠ video equipment, its spy
3, system according to claim 1 is characterized in that, described wireless multimedia communication terminal further comprises: audio decoding unit and video decoding unit.
4, a kind of implementation method of radio multimedium transmission is characterized in that this method may further comprise the steps:
A. wireless multimedia communication terminal receives the operation requests of user's input, and this operation requests is sent to multimedia personal computer by wireless mode;
B. after multimedia personal computer is received action message, finish corresponding multimedia operations, and operating result is returned wireless multimedia communication terminal with wireless mode according to action message;
C. wireless multimedia communication terminal is delivered to demonstration or broadcast on the audio ﹠ video equipment with received operating result after treatment.
5, method according to claim 4, it is characterized in that, described operation requests is when displaying the play audio-video document, step b further comprises: after multimedia personal computer is received this request, in its data storehouse, choose the multimedia file of appointment, then with selected multimedia file by wireless, send to wireless multimedia communication terminal continuously in the Streaming Media mode;
Step c further comprises: wireless multimedia communication terminal behind transmission path analysis and local decompress(ion), is delivered to demonstration or broadcast on the audio ﹠ video equipment with the multimedia file of being received.
6, method according to claim 5 is characterized in that, step b further comprises:
B1. after multimedia personal computer receives that demands of media files is specified in selection that wireless multimedia communication terminal sends, judge whether to import new media file, if not, then return step b1, wait for request next time; Otherwise, execution in step b2;
B2. receive the path that needs the importing medium file of wireless multimedia communication terminal input, judge then whether specified file is the form that audio ﹠ video equipment can decompress, if not, then return error message, finish current flow process; Otherwise, send selected media file to wireless multimedia communication terminal with wireless mode.
7, method according to claim 6 is characterized in that, step b further comprises: judge whether that the media file that is transferred to wireless multimedia communication terminal is set to the file hiding pattern, if then this document is set to stealth mode; Otherwise, finish current flow process.
8, method according to claim 4 is characterized in that, this method further comprises: multimedia personal computer is configured the wireless network association attributes by the server end service module.
9, method according to claim 8 is characterized in that, described wireless network association attributes comprises wireless network name, transmission data key.
10, method according to claim 4, it is characterized in that this method further comprises: during the wireless multimedia communication terminal initial start, search for available wireless network and judge whether to search, if do not search, repeat search or finish current flow process then; If search, then continue to judge whether to find the multimedia personal computer that content service can be provided, if do not find, then repeat to search or finish current flow process; If find, judge whether to exist the multimedia personal computer that content service can be provided more than again, if exist, then select a multimedia personal computer wherein arbitrarily, otherwise, the selected multimedia personal computer that is found.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031428061A CN1293488C (en) | 2003-06-13 | 2003-06-13 | Wireless multimedia transmission system and implement method thereof |
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| CNB031428061A CN1293488C (en) | 2003-06-13 | 2003-06-13 | Wireless multimedia transmission system and implement method thereof |
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| CN1567265A true CN1567265A (en) | 2005-01-19 |
| CN1293488C CN1293488C (en) | 2007-01-03 |
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| CNB031428061A Expired - Lifetime CN1293488C (en) | 2003-06-13 | 2003-06-13 | Wireless multimedia transmission system and implement method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100394738C (en) * | 2005-03-28 | 2008-06-11 | 神州亿品科技有限公司 | Distributed multimedia information dissemination system |
| CN101808216A (en) * | 2009-02-13 | 2010-08-18 | 纬创资通股份有限公司 | Multimedia management device and system and method thereof |
| CN103312382A (en) * | 2012-03-14 | 2013-09-18 | 联想(北京)有限公司 | Data transmission method, operating equipment and system |
| CN103873115A (en) * | 2012-12-15 | 2014-06-18 | 联想(北京)有限公司 | Information processing method and electronic equipment |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089183A (en) * | 1992-11-16 | 1994-07-13 | 旭丽股份有限公司 | Infrared remote-controlling equipment for TV game system |
| KR20030038824A (en) * | 2000-10-17 | 2003-05-16 | 문라이트 코드리스 리미티드 | Method and system for remote video display through a wireless projector |
| CN1190079C (en) * | 2002-03-29 | 2005-02-16 | 武汉邮电科学研究院 | Soft exchange based video conference system multipoint controller |
-
2003
- 2003-06-13 CN CNB031428061A patent/CN1293488C/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100394738C (en) * | 2005-03-28 | 2008-06-11 | 神州亿品科技有限公司 | Distributed multimedia information dissemination system |
| CN101808216A (en) * | 2009-02-13 | 2010-08-18 | 纬创资通股份有限公司 | Multimedia management device and system and method thereof |
| CN103312382A (en) * | 2012-03-14 | 2013-09-18 | 联想(北京)有限公司 | Data transmission method, operating equipment and system |
| CN103873115A (en) * | 2012-12-15 | 2014-06-18 | 联想(北京)有限公司 | Information processing method and electronic equipment |
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| Publication number | Publication date |
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| CN1293488C (en) | 2007-01-03 |
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Granted publication date: 20070103 |