CN101867562B - Network digital multimedia player - Google Patents
Network digital multimedia player Download PDFInfo
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- CN101867562B CN101867562B CN201010111870.8A CN201010111870A CN101867562B CN 101867562 B CN101867562 B CN 101867562B CN 201010111870 A CN201010111870 A CN 201010111870A CN 101867562 B CN101867562 B CN 101867562B
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Abstract
The present invention discloses a kind of network digital multimedia player, comprise a received code identification program request, send digital coding and then obtain multimedia file and play, described network digital multimedia player comprises memory module, playing module, reception of wireless signals module and processor and wireless network link block, described memory module stores the digital coding control command mapping table corresponding with manipulation instruction, described reception of wireless signals module received code identification pen identification is also transferred to processor process after the wireless digitally encoded signal sent, processor contrast control command mapping table also sends control command by network connecting module from the information of specifying download platform to download the program request of manipulation instruction institute, the IP Information On Demand downloaded carries out digital decompression process through processor and plays this multimedia file.
Description
Technical field
What the present invention relates to is a kind of network digital multimedia player connected to the network, belongs to digital player and network multimedia field, is that a kind of code identification pen that uses carries out the network digital multimedia player controlled specifically.
Background technology
Player refers to the electronic device product can play with the video of digital signal form storage or audio file.Except minority wave file, most of player carries decoder with reduction through compressed media file, and the algorithm of a whole set of inversion frequency built-in and buffering also wanted by player.Present player is all, after needing to be connected with computer and being downloaded to by multimedia file and store in player, re-use player and play.The high speed development of computer network and Internet, has become indispensable part in people's life.Use the various information of network exchange very general, wherein multimedia exchange files account for greatly in the information exchange.In this exchange process, a lot of multimedia file is not all through the license of copyright owner, the rights and interests of copyright owner and publisher of having encroached right.Therefore copyright is more and more difficult to obtain due protection, various free download as intangible asset now, is full of network; copyright owner and publisher sustain a great loss; its cost can not be reclaimed, make the economic base of creation more and more narrower, be unfavorable for the prosperity of cultural products market.Again because computer network and a lot of user of Internet download and exchange message without real name, make right-safeguarding means but very deficient.Make the distribution channel serious impact of multimedia cultural product; The media product sales volume of the support conventional carriers being representative with disc, video disc glides day by day, the website of genuine multimedia file resource service is provided then to be difficult profit, in the urgent need to seeking new music program release pattern because of spreading unchecked of Free Online multimedia file download.
Above-mentioned problem can know that the impairment of benefit of open network environment to copyright owner and publisher is very large, but the advantage of Internet resources can not be brought into play by the network environment of closed type.Moreover player need computer could from computer network or Internet obtain multimedia resource, for old man and the inconvenient computed crowd of part, very large resistance is brought to use player plays multimedia resource.The renewal speed of player also cannot meet the renewal speed of modern multimedia resource.
How to develop one can enable player sign-on computer networks or Internet obtain multimedia resource, the not player of literary piracy people and publisher's right, and can upgrade in time or be the problem that the present invention solves according to the content of customized network resource that needs of user oneself.
Summary of the invention
The object of this invention is to provide a kind of multimedia play equipment be combined with internet music resource by player hardware equipment, on support conventional domestic sound equipment use habit basis, bring perfect music experience and the convenient manipulation to magnanimity music sources to user.
The technological means adopted for realizing above-mentioned object the present invention is: a kind of network digital multimedia player, described network digital multimedia player comprises memory module, signal receiving module, processor, playing module and network connecting module, described processor respectively with memory module, signal receiving module, playing module and network connecting module connect, the coded message that described signal receiving module received code identification pen sends, the treated device of described digital coding and network connecting module are transferred into network service platform, after processor obtains the multimedia messages corresponding to digital coding from described network service platform, processor is by the network multimedia storehouse of network connecting module interconnection network service platform, download or the online digital multimedia document playing described network multimedia storehouse,
Described network service platform is Internet service platform, described Internet service platform comprises Database Administration Server and content server, described Database Administration Server stores multimedia messages, receive the digital coding multimedia messages that also feedback is corresponding with digital coding that network digital multimedia player sends, described content server comprises network multimedia storehouse, network multimedia library storage digital multimedia document, described content server receives the multimedia messages that network digital multimedia player sends, and the multimedia file corresponding with this multimedia messages is gone out to give network digital multimedia player,
Described multimedia messages be the title of multimedia file, author, performing artist and or the network address information of corresponding multimedia file, described digital multimedia document is audio frequency, video, word or picture file;
Described network connecting module comprises network adapter and wireless network module;
Described signal receiving module is frequency 2.4G reception of wireless signals module;
Described processor by network connecting module by obtained multimedia information storage to memory module, described memory module also stores digital coding and the corresponding command mappings table of manipulation instruction;
Described network digital multimedia player is independently box body structure, described memory module, digital multimedia playing module, and reception of wireless signals module and processor and network connecting module are all arranged in this box body;
Described network digital multimedia player also comprises loud speaker, and the digital multimedia document of described acquisition exports loud speaker to through playing module after processor decodes process;
The digital multimedia player of described web download also comprises display screen, and described processor exports display display to by the information that the network multimedia storehouse of network connecting module interconnection network service platform is downloaded after processor decodes process;
Described memory module comprises program storage block, and described control command mapping table is stored in described program storage block;
Described memory module also comprises data memory module, and the multimedia information storage of described acquisition is to data memory module;
Also comprise operation control key, the operation control key described in control can the multimedia messages of acquisition in played data memory module;
Also comprise radio receiver module, described radio receiver module is connected with loud speaker with processor respectively;
The wireless code signal of a described signal receiving module received code identification program request, the described wireless code signal contrast control command table of comparisons is obtained the control command corresponding to coded signal by processor;
Characters/graphic information printing corresponding to the song of described program request is can on the paper carrier of term issue;
The position correspondence of the characters/graphic information of the printing song of described paper carrier prints corresponding micro-code information unique with the information of described song;
Also comprise USB interface, the digital multimedia document in flash disk/portable hard drive can be play by USB interface;
The multimedia file of described player plays is audio file or video file;
The flow process that the described network digital multimedia player coded message received corresponding to user's operate coding identification requesting songs obtains multimedia messages is:
(1) control command corresponding to the coded message corresponding to song of a code identification program request is obtained;
(2) confirm whether this locality exists the list of magazine song information, if not, then enters next step, if so, then enters step (4);
(3) obtain magazine information list by network connecting module interconnection network, and be stored into memory module;
(4) network address information of the song of institute's program request is obtained from the list of magazine song information;
(5) network address information is sent to the information of the song of network service platform acquisition institute program request by network connecting module;
(6) song selection result is waited for;
(7) confirm to download or play;
Network digital multimedia player described in described step carries out two-way authentication when being sent request by network connecting module interconnection network service platform, and described request step comprises:
(1) user's registration request;
(2) user that starts shooting verifies request;
(3) playlist update request;
(4) music download request;
(5) music request;
(6) inquiry into balance request;
Word or the graphical information of digital multimedia document is printed at code plane carrier surface, the region correspondence of word or graphical information that described code plane carrier prints digital multimedia document prints miniature coding, the word of described miniature coding and described digital multimedia document or graphical information is corresponding associates; It is characterized in that, code identification pen is clicked and is identified the miniature coding being printed on code plane carrier surface, by wireless transmission method, the wireless digital signal that the miniature coding of code identification pen identification generates is sent to network digital multimedia player; Network digital multimedia player is connected to the multimedia file of the miniature coding correspondence selected by the acquisition of Internet service platform by network connecting module and plays the network digital multimedia file obtained;
The beneficial effect that the present invention adopts above-mentioned technological means to bring is: network digital multimedia player direct interconnection network of the present invention obtains digital information, namely the literal/pattern clicking song operates network digital multimedia player of the present invention and obtains the digital document clicking song from the network platform by manipulation information coding, and then carry out broadcasting output, do not need to operate the broadcasting that the network equipments such as computer can carry out digital document, enjoy instantaneity and the fashion of online music, simplify loaded down with trivial details network operation, different users is facilitated to use, especially for being unfamiliar with or the personnel of uncomfortable network operation, such as old man, child and have eye illness or the disabled to use, and further provide the digital playing apparatus of network simply and easily.In addition, network digital multimedia player of the present invention adopts box body structure, and volume is little, aesthetic in appearance, can put in parlor and by Peripheral Interface and high-end power amplification sound box supporting and obtain the enjoyment of convenient instant online music, be suitable as the network digital multimedia player of family.Network digital multimedia player of the present invention is also by the paper carrier of supporting continuous renewal, and such as audio-video periodicals and magazines, realizes the popularization to information such as music and propagation.The present invention, due to the large-scale legal video and audio bank with corresponding network provider, can stop the circulation of pirate audio-video product, safeguards the copyright of legal audio-visual product.
Accompanying drawing explanation
Fig. 1 is network digital multimedia player system.
Fig. 2 is the structure chart of the code identification pen of network digital multimedia player.
Fig. 3 is the structure chart of network multimedia player.
Fig. 4 is the schematic diagram of reserved coding region of the present invention.
Fig. 5 is the song information chained list in player.
Fig. 6 is the flow chart that network digital multimedia player obtains network digital file.
Embodiment
Embodiment 1
As shown in Figure 1 be that network digital multimedia player system comprises, the code identification pen 2 of digital multimedia player 3 and digital multimedia player.Network digital multimedia player coordinates the network providing numerical data to specify download platform, and web download platform arranges the webserver, and the webserver is made up of Database Administration Server 5 and remote content server 6; Database Administration Server 5 there are multimedia brief information and the URL(uniform resource locator) leaving multimedia file on remote content server 6 in; Remote content server 6 is deposited the multimedia file that player 3 can be play; And plane coding carrier 1, by the above-mentioned netcast system formed for user provides brand-new multimedia to experience.
As shown in Figure 2 be the structure chart of network digital multimedia player code identification pen.Code identification pen comprises optical module, imageing sensor, image recognition processor, microcontroller, wireless transmission processing module.Optical module is primarily of two infrared light supplies, and lens, a filter forms.Light illuminating code identification region, scioptics amplify coded image, and after the filtration of filter, image sensor module obtains optical information.Imageing sensor passes to image recognition processor module after acquisition optical information is converted into digital electric signal.Image recognition processor is decoded to image, namely the digital information of coded image, changes into the numeral that uniquely represents this coding.Image recognition processor, the numeral produced, passes to micro controller module.Micro controller module is responsible for decoded information being converted to corresponding order and data format, and opening flag symbol, data length field, data type field, data check field and end mark symbol is added in the order produced or data, be packaged into the packet of wireless transmission, pass to wireless transmission processing module.Wireless transmission processing module is responsible for the packet being transmitted by micro controller module, adds address and check code, sends to the wireless receiving processing module of network digital multimedia player.
As shown in Figure 3 be the structure chart of network multimedia player.Comprise processor, memory, LCD display module, user's input module, FM module, cable network module, wireless network module, wireless receiving processing module, peripheral expansion interface, audio processing modules.Wireless receiving processing module receives the packet that code identification pen is sent, by this data packet transmission to processor.Processor is reduced into code through resolution data bag, code is sent to the Database Administration Server on the webserver by cable network module or wireless network module, obtains unified resource status symbol and the multimedia messages of the remote content server on the webserver.The multimedia messages passed back comprises song multimedia name, creator, the information such as multimedia text.Processor is by the multimedia name in multimedia messages, and creator, the information transmission such as multimedia text show to LCD display module, and multimedia resource address is sent to cable network module or wireless network module.Use inner cable network module or wireless network module to connect this address according to the URL(uniform resource locator) player returned, obtain song resource and be transferred to processor.Processor is sent to external audio frequency output equipment by audio output interface and plays after being decoded by this multimedia resource.Memory storing multimedia data and program.FM module receiving broadcast signal, after being decoded by Signal transmissions, is sent to external audio frequency output equipment by audio output interface and plays to processor.The input of user's input module response user, processor is passed in this input, and processor sends corresponding instruction, as volume adjusting etc. according to the input of user.Peripheral expansion interface comprises audio output interface, USB interface, memory expansion card and boom box.
Network digital multimedia player is printed on the miniature coding on multimedia magazine surface by obtaining, the Database Administration Server be then coded on the webserver according to this finds corresponding song information table.By the title of the song in song information, singer, the information displaying such as the lyrics are on the display screen of network digital multimedia player; Connect the network address in song information, obtain song resource, play.The flow process of this player is used to be: to use code identification pen to click song on music magazine, code identification pen obtains the miniature coded image of this song of representative be imprinted on magazine, after obtaining coding by identification, coding is radioed to network digital multimedia player.After network digital multimedia player obtains this coding, be connected to the Database Administration Server of the webserver.The connected mode adopted according to network condition decision at that time, can be wired mode as LAN, or wireless mode is as WiFi.The Database Administration Server of the webserver has a song chained list, the content of this list comprises song encode, song information as title of the song, singer, the lyrics etc., song resource acquisition address.Song chained list can find song information representated by this coding and URL(uniform resource locator) according to song encode.Network digital multimedia player obtains song information corresponding to song encode and address from the Database Administration Server the webserver, and song information is displayed in LCD display.Network digital multimedia player logs in remote content server by URL(uniform resource locator) and obtains song resource, plays.
Embodiment 2
As shown in Figure 3 be the structure chart of network multimedia player.Comprise processor, memory, LCD display module, user's input module, FM module, cable network module, wireless network module, wireless receiving processing module, peripheral expansion interface, audio-frequency module and video module.Wireless receiving processing module receives the packet that code identification pen is sent, by this data packet transmission to processor.Processor is reduced into code through resolution data bag, code is sent to the Database Administration Server on the webserver by cable network module or wireless network module, obtains unified resource status symbol and the multimedia messages of the remote content server on the webserver.The multimedia messages passed back comprises video name, the information such as creator.Processor is by old for the video name in multimedia messages, and the information transmission such as creator show to LCD display module, and multimedia resource address is sent to cable network module or wireless network module.Use inner cable network module or wireless network module to connect this address according to the URL(uniform resource locator) player returned, obtain video resource and be transferred to processor and video module.Video is sent in LCD display by video module process, and is sent to external audio frequency output equipment by audio-frequency module output interface and plays after being decoded by this video resource by processor.Memory storing multimedia data and program.FM module receiving broadcast signal, after being decoded by Signal transmissions, is sent to external audio frequency output equipment by audio output interface and plays to processor.The input of user's input module response user, processor is passed in this input, and processor sends corresponding instruction, as volume adjusting etc. according to the input of user.Peripheral expansion interface comprises audio output interface, USB interface, memory expansion card and boom box.
Network digital multimedia player is printed on the miniature coding on multimedia magazine surface by obtaining, the Database Administration Server be then coded on the webserver according to this finds corresponding video information table.By the video name in video information, the information displaying such as creator are on the display screen of network digital multimedia player; Connect the network address of the remote content server in video information, obtain video resource, play.The flow process of this player is used to be: to use code identification pen to click the word corresponding to video file or figure that are printed on multimedia magazine, code identification pen obtain be imprinted on magazine with the miniature coding corresponding to video file, undertaken processing the rear coded message generating numeral by the miniature coding identified, the coded message of this numeral is radioed to network digital multimedia player.After player obtains this coded message, be connected to the Database Administration Server of the webserver.The connected mode adopted according to network condition decision at that time, can be wired mode as LAN, or wireless mode is as WiFi.The Database Administration Server of the webserver has a video chained list, the content of this list comprises Video coding, and video information is as video name, video creator etc., and video resource obtains address.Video chained list can find video information representated by this coding and URL(uniform resource locator) according to Video coding.Network digital multimedia player obtains video information corresponding to Video coding and address from the Database Administration Server the webserver, and video information is displayed in LCD display.Network digital multimedia player logs in remote content server by URL(uniform resource locator) and obtains video resource, plays.
As shown in Figure 4, the present invention also arranges reserved coding region, and user incessantly uses existing interactive music magazine and selects passively, can also click this reserved coding and then design different song information chained lists according to the hobby of oneself.In the present embodiment, at each, this interactive magazine arranges a reserved coding region.Each region sets a specific miniature coding.Reserved coding can be considered as operating control coding, each this magazine can be unified with such one group of reserved coding.User clicks the laggard line operate of reserved coding.One section of selected parts of song information chained list as shown in Figure 5.Can find out, can song title be obtained according to song encode, Yi Renming, album name and URL address.
Fig. 6 is the bidirectional authentication mechanism of the network digital multimedia player of this Play System and the webserver of web download platform, first received identity information and the service request of user's end by the webserver i.e. network service platform, then at network service platform, authentication is carried out to this request.User is provided to hold message address for this request command after being verified.The request step sent as the client of player in two-way authentication comprises:
(1) user's registration request;
(2) user that starts shooting verifies request;
(3) playlist update request;
(4) music download request;
(5) music request;
(6) inquiry into balance request.
As mentioned above, the present invention is by the literal/pattern information phase unique association of the unrecognizable miniature coding of human eye with song, and the literal/pattern information correspondence of above-mentioned miniature coding and song is printed at the same area of music magazine, user can be interior when a few second after clicking the song on music magazine, hears corresponding song.And the tonequality of song is outstanding, be also not easy to occur empty connection or the situation of incorrect link.Staff only needs regular update song chained list, just can ensure that user can enjoy the legal music of the good quality of renewal.Network digital multimedia player of the present invention is also by the paper carrier of supporting continuous renewal, and such as audio-video periodicals and magazines, realizes the popularization to information such as music and propagation.
Claims (18)
1. a network digital multimedia player system, it is characterized in that: described network digital multimedia player system comprises network digital multimedia player, described network digital multimedia player comprises memory module, signal receiving module, processor, playing module, LCD display module, radio receiver module and network connecting module
Described processor is connected with memory module, signal receiving module, playing module and network connecting module respectively,
Described processor by network connecting module by obtained multimedia information storage to memory module,
Described memory module also stores the digital coding command mappings table corresponding with manipulation instruction,
The coded message that described signal receiving module received code identification pen sends,
The treated device of described coded message and network connecting module are transferred into network service platform, after processor obtains the multimedia messages corresponding to coded message from described network service platform, processor is by the network multimedia storehouse of network connecting module interconnection network service platform, download or the online digital multimedia document playing described network multimedia storehouse
Described network service platform is Internet service platform, described Internet service platform comprises Database Administration Server and content server, described content server comprises network multimedia storehouse, network multimedia library storage digital multimedia document, described content server receives the multimedia messages that network digital multimedia player sends, and the multimedia file corresponding with this multimedia messages is gone out to give network digital multimedia player
Described network digital multimedia player coordinates the web download platform providing numerical data,
Described web download platform arranges the webserver, and the webserver is made up of Database Administration Server and remote content server;
Database Administration Server there are multimedia brief information and the URL(uniform resource locator) leaving multimedia file on remote content server in; The miniature coding in the code identification region on a described code identification recognition coding flat carrier, described code plane carrier is provided with reserved coding region, and user clicks this reserved coding and then designs different song information chained lists according to the hobby of oneself;
The specific miniature coding of described reserved coding region setting;
Described remote content server has deposited multimedia file;
Described Transmitting of Multi-media Information shows to LCD display module by described processor, and obtains described multimedia resource by URL(uniform resource locator) login remote content server, plays;
Described radio receiver module is connected with loud speaker with processor respectively.
2. network digital multimedia player system according to claim 1, it is characterized in that: described Database Administration Server stores multimedia messages, receive the digital coding multimedia messages that also feedback is corresponding with digital coding that network digital multimedia player sends.
3. network digital multimedia player system according to claim 1 and 2, it is characterized in that: described multimedia messages be the title of multimedia file, author, performing artist and or the network address information of corresponding multimedia file, described digital multimedia document is audio frequency, video, word or picture file.
4. network digital multimedia player system according to claim 1, is characterized in that: described network connecting module comprises network adapter and wireless network module.
5. network digital multimedia player system according to claim 1, is characterized in that: described signal receiving module is frequency 2.4G reception of wireless signals module.
6. network digital multimedia player system according to claim 1, it is characterized in that: described network digital multimedia player is independently box body structure, described memory module, digital multimedia playing module, reception of wireless signals module and processor and network connecting module are all arranged in this box body.
7. network digital multimedia player system according to claim 1, it is characterized in that: described network digital multimedia player also comprises loud speaker, the digital multimedia document of described acquisition exports loud speaker to through playing module after processor decodes process.
8. network digital multimedia player system according to claim 1, it is characterized in that: the digital multimedia player of described web download also comprises display screen, described processor exports display display to by the information that the network multimedia storehouse of network connecting module interconnection network service platform is downloaded after processor decodes process.
9. network digital multimedia player system according to claim 1, is characterized in that: described memory module comprises program storage block, described control command mapping table is stored in described program storage block.
10. network digital multimedia player system according to claim 1, it is characterized in that: described memory module also comprises data memory module, the multimedia information storage of described acquisition is to data memory module.
11. network digital multimedia player systems according to claim 10, is characterized in that: also comprise operation control key, and the operation control key described in control can the multimedia messages of acquisition in played data memory module.
12. network digital multimedia player systems according to claim 1, it is characterized in that: the wireless code signal of a described signal receiving module received code identification program request, the described wireless code signal contrast control command table of comparisons is obtained the control command corresponding to coded signal by processor.
13. network digital multimedia player systems according to claim 3, it is characterized in that, audio frequency in described digital multimedia document is the song of program request, and the characters/graphic information printing corresponding to the song of described program request is can on the paper carrier of term issue.
14. network digital multimedia player systems according to claim 13, is characterized in that, the position correspondence of the characters/graphic information of the printing song of described paper carrier prints corresponding micro-code information unique with the information of described song.
15. network digital multimedia player systems according to claim 1, is characterized in that, also comprise USB interface, can play the digital multimedia document in flash disk/portable hard drive by USB interface.
The flow process that coded message corresponding to a 16. network digital multimedia player system acceptance user operate coding identification requesting songs according to claim 1 obtains multimedia messages is:
(1) control command corresponding to the coded message corresponding to song of a code identification program request is obtained;
(2) confirm whether this locality exists the list of magazine song information, if not, then enters next step, if so, then enters step (4);
(3) obtain magazine information list by network connecting module interconnection network, and be stored into memory module;
(4) network address information of the song of institute's program request is obtained from the list of magazine song information;
(5) network address information is sent to the information of the song of network service platform acquisition institute program request by network connecting module;
(6) song selection result is waited for;
(7) confirm to download or play.
17. network digital multimedia player systems according to claim 16 obtain the flow process of multimedia messages, it is characterized in that, described network digital multimedia player carries out two-way authentication when being sent request by network connecting module interconnection network service platform, and described request step comprises:
(1) user's registration request;
(2) user that starts shooting verifies request;
(3) playlist update request;
(4) music download request;
(5) music request;
(6) inquiry into balance request.
The method of 18. 1 kinds of network digital multimedia player system to play multimedia files as claimed in claim 1, word or the graphical information of digital multimedia document is printed at code plane carrier surface, the region correspondence of word or graphical information that described code plane carrier prints digital multimedia document prints miniature coding, the word of described miniature coding and described digital multimedia document or graphical information is corresponding associates; It is characterized in that, code identification pen is clicked and is identified the miniature coding being printed on code plane carrier surface, by wireless transmission method, the wireless digital signal that the miniature coding of code identification pen identification generates is sent to network digital multimedia player; Network digital multimedia player is connected to the multimedia file of the miniature coding correspondence selected by the acquisition of Internet service platform by network connecting module and plays the network digital multimedia file obtained.
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| CN201010111870.8A CN101867562B (en) | 2009-04-15 | 2010-02-05 | Network digital multimedia player |
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| CN200910082360 | 2009-04-15 | ||
| CN201010111870.8A CN101867562B (en) | 2009-04-15 | 2010-02-05 | Network digital multimedia player |
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| CN101867562B true CN101867562B (en) | 2015-12-16 |
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| CN104767758A (en) * | 2015-04-20 | 2015-07-08 | 浪潮电子信息产业股份有限公司 | Command processing method and device |
| CN106572079A (en) * | 2016-10-13 | 2017-04-19 | 杭州鸿雁电器有限公司 | Multimedia network playing device and embedded network radio |
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| CN1945559A (en) * | 2006-11-01 | 2007-04-11 | 天津市阿波罗信息技术有限公司 | Method for realizing printing medium multimedia system of leading-in half-tone screen code |
| CN101102471A (en) * | 2006-07-03 | 2008-01-09 | 北京华旗资讯数码科技有限公司 | Reading system for capturing network audio and video files |
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| US20070013680A1 (en) * | 2003-12-19 | 2007-01-18 | Yeung Minerva M | Electronic pen-computer multimedia interactive system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101102471A (en) * | 2006-07-03 | 2008-01-09 | 北京华旗资讯数码科技有限公司 | Reading system for capturing network audio and video files |
| CN1945559A (en) * | 2006-11-01 | 2007-04-11 | 天津市阿波罗信息技术有限公司 | Method for realizing printing medium multimedia system of leading-in half-tone screen code |
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