CN100531297C - Digital multimedia transmission system and digital multimedia player set therein - Google Patents
Digital multimedia transmission system and digital multimedia player set therein Download PDFInfo
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- CN100531297C CN100531297C CNB2004100785713A CN200410078571A CN100531297C CN 100531297 C CN100531297 C CN 100531297C CN B2004100785713 A CNB2004100785713 A CN B2004100785713A CN 200410078571 A CN200410078571 A CN 200410078571A CN 100531297 C CN100531297 C CN 100531297C
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Abstract
This invention discloses a digital multimedia broad cast system and a broadcaster in it including a document server storing several groups of digital multimedia compressed data, a network and a digital multimedia broadcaster containing a network interface circuit connected with signals, a data bus of a large volume storage device, an artificial interface circuit of a large volume storage device electrically connected to the data bus, a control circuit connected between said network interface network and the artificial interface circuit to fetch one of the several multimedia compressed data and transfer the artificial interface circuit to the data bus and a decoder connected to the data bus.
Description
Technical field
The present invention relates to a kind of digital multimedia broadcasting system and setting digital multimedia player wherein, especially refer to a kind of digital multimedia broadcasting system and setting digital multimedia player wherein that is applied in the network system.
Background technology
See also Fig. 1, it is the function block diagram that existing common digital multimedia content is propagated, a file server 10 wherein mainly is set, deposit the file of content of multimedia on this document server 10, and main frame 11, main frame 12 etc. that connect to go up computer network 1 all can come to download from file server 10 file of content of multimedia by computer network 1, then main frame 12 again the hardware resource of utilization itself play.
And on the other hand, digital tv network then utilizes function block diagram as shown in Figure 2 to carry out the digital multimedia content propagation, wherein have a file server 20 equally, also deposit the file of content of multimedia on this document server 20, and the television set 21 or the digital television 22 that are provided with set-top box 210 just can obtain the digital multimedia content that file server 20 is initiatively sent out by TV network 2, or the function by video on demand (Video On Demand), initiatively read the optional network specific digit content of multimedia by TV network 2 again and play from file server 20.
And above-mentioned technical though all is to utilize file server to come supply company to be connected on digital multimedia content playing device on the network to carry out data and obtain and play, but above-mentionedly all incur a considerable or great expense in order to the main frame of finishing the digital multimedia content playing device, the television set that is provided with set-top box or the cost of digital television, being applied in other field may be improper.For example, if want that construction goes out a digital multimedia content Play System with a plurality of display screens in middle-size and small-size public places such as airport or show ground, can be in order on each display screen, to show because of place different image frame and sound-content, for instance, in the airport, the display screen of different terminals can only show the proprietary information of this terminal.But the cost that main frame that cost is too high or set-top box all make plan realize is too high.And how to improve the defective of above-mentioned conventional means, and then design a with low cost but multiple functional digital multimedia content playing device, for developing main purpose of the present invention.
Summary of the invention
Main purpose of the present invention is to utilize general handy DVD coding chip, finishes a network visual-signal system.Though the inner use of DVD also is MPEG-2 image compress technique, because the DVD chip output is big, the price that causes the DVD solution is far below existing MPEG-2 decoding system (the low approximately 50-70% of chip price).DVD drive uses because the DVD chip design need be arranged in pairs or groups, and the present invention designs a kind of interface especially, and network data is converted into emulation DVD data, allows cheap DVD technology can be used for video-signal system with network connections.
For achieving the above object, the invention provides a kind of digital multimedia player, be applied on the network, this player comprises: a network interface circuit, signal is connected in this network, it receives a digital multimedia packed data from this network, and this digital multimedia packed data exists with the data format of a mass storage; One mass storage data/address bus; One mass storage emulation interface (mass storageemulation interface) circuit is electrically connected on this mass storage data/address bus; One control circuit, be electrically connected between this network interface circuit and this mass storage emulation interface circuit, it reads this digital multimedia packed data from this network interface circuit, transfer on this mass storage data/address bus by this mass storage emulation interface circuit again; And a digital multimedia packed data decoder, being electrically connected on this mass storage data/address bus, it is deciphered this digital multimedia packed data that transmits on this mass storage data/address bus and broadcast.
According to above-mentioned conception, digital multimedia player of the present invention, wherein this network is an Ethernet or wireless network, this network interface circuit is an Ethernet interface circuit or radio network interface circuit.
According to above-mentioned conception, digital multimedia player of the present invention, wherein this digital multimedia packed data can be a part of multifunction laser optic disk video-audio data.
According to above-mentioned conception, digital multimedia player of the present invention, wherein this mass storage data/address bus can be one CD-ROM drive/Winchester disk drive bus, and this mass storage emulation interface circuit is one CD-ROM drive/Winchester disk drive emulation interface circuit, and this digital multimedia packed data decoder can be and has CD-ROM drive/a multifunction laser optic disk video-audio data decoder of Winchester disk drive bus interface.
According to above-mentioned conception, digital multimedia player of the present invention wherein also comprises a high-speed cache, and it is electrically connected on this controller, advances to provide this controller to deposit the data that some need be kept in.
Another aspect of the present invention provides a kind of digital multimedia broadcasting system, comprises: a file server (flie server), and wherein the data format with a mass storage stores array digital multimedia packed data; One network; And at least one digital multimedia player, it comprises: a network interface circuit, signal are connected in this network; One mass storage data/address bus; One mass storage emulation interface circuit is electrically connected on this mass storage data/address bus; One control circuit, be electrically connected between this network interface circuit and this mass storage emulation interface circuit, it reads in the array digital multimedia packed data that is stored in the file server one group by this network interface circuit and this network, and should organize the digital multimedia packed data and transfer on this mass storage data/address bus by this mass storage emulation interface circuit; And a digital multimedia packed data decoder, being electrically connected between this mass storage data/address bus and this display, it is deciphered this digital multimedia packed data that transmits on this mass storage data/address bus and broadcast.
According to above-mentioned conception, digital multimedia broadcasting system of the present invention, wherein this network is an Ethernet, this network interface circuit is an Ethernet interface circuit.
According to above-mentioned conception, digital multimedia broadcasting system of the present invention, wherein the array digital multimedia packed data that is stored in this document server can be a part of multifunction laser optic disk video-audio data.
According to above-mentioned conception, digital multimedia broadcasting system of the present invention, wherein this mass storage data/address bus can be one CD-ROM drive/Winchester disk drive bus, and this mass storage emulation interface circuit is one CD-ROM drive/Winchester disk drive emulation interface circuit, and this digital multimedia packed data decoder can be and has CD-ROM drive/a multifunction laser optic disk video-audio data decoder of Winchester disk drive bus interface.
According to above-mentioned conception, digital multimedia broadcasting system of the present invention wherein also comprises a high-speed cache, and it is electrically connected on this controller, advances to provide this controller to deposit the data that some need be kept in.
Below in conjunction with specific embodiment and accompanying drawing thereof the present invention is described in further detail.
Description of drawings
Fig. 1 is the function block diagram that existing common digital multimedia content is propagated.
Fig. 2 is the function block diagram of existing common digital tv network.
Fig. 3 is the preferred embodiment function block diagram that improves a kind of digital multimedia broadcasting system that defective developed out of known technology for the present invention.
Fig. 4 is the built-in function block diagram of digital multimedia player 31.
Wherein, description of reference numerals is as follows:
Computer network 1 file server 10
Set-top box 210 television sets 21
Network interface circuit 401 control circuits 402
High-speed cache 403 mass storage emulation interface circuit 404
Digital multimedia packed data decoder 406 mass storage data/address buss 405
CD-disc read-write equipment 407 displays and loud speaker 408
Embodiment
See also Fig. 3, it is the preferred embodiment function block diagram that improves a kind of digital multimedia broadcasting system that defective developed out of known technology for the present invention, it mainly is used as the backbone of transfer of data by a network 3, and file server 30 is connected on this network 3, data format with a mass storage in the file server 30 stores array digital multimedia packed data, and above-mentioned array digital multimedia packed data mainly is through the processing of a data compression coder 302 and form by many groups digital multimedia data 301.For instance, organize digital multimedia data 301 more and can be various digitized video voice data, and after the processing of the data compression coder of finishing through a for example MPEG-2 encoder 302, be stored in file server 30 again.Make file server 30 just can be considered to be the multifunction laser optic disk sheet (DVD disk) of an emulation, can just can be considered to be a part of multifunction laser optic disk video-audio data (partial DVDdata) by every group of digital multimedia packed data that leaves file server 30 in.The other end then can be provided with a plurality of digital multimedia players 31 and finish with network 3 and link to each other.And all can reading a certain group of part multifunction laser optic disk video-audio data (partial DVD data) independently from file server 30, plays each digital multimedia player 31.Give an example, this system builds and places in the airport, only need set up an ethernet local area network network or wireless network (being network 3) and a computer file server 30, and be placed with array part multifunction laser optic disk video-audio data (partial DVD data) in this computer file server 30, make this computer file server 30 on network, look like a large-capacity multifunctional videodisc sheet that has catalogue and can supply reading of data.Thus, build each digital multimedia player 31 that places different terminals respectively and just can independently read required part multifunction laser optic disk video-audio data (partial DVD data) and play, and reach the purpose that subregion is broadcast.
And part multifunction laser optic disk video-audio data (partial DVD data), referring to file server 30 does not need to wait for that producing the complete DVD data of a slice could begin to transmit image.30 of file servers need the generation data in several seconds, just can begin to be transferred to our media player.In transmission course, can produce down several seconds data again, wait former second to finish after, continuing spreads out of or the like.Thus, file server 30 can be in time from the image data end, as TV or video camera signal, the partial data that the information of obtaining converts the DVD form immediately to (partial DVD data), transmission is immediately broadcasted, in transmission course, produce next group partial data (partial data) again.This design is arranged, just can utilize native system to reach the application of timely image transmission fast.
See also Fig. 4 again, it is the built-in function block diagram of digital multimedia player 31, it consists predominantly of a network interface circuit 401, it is connected in this network 3 in order to signal, and the inside of digital multimedia player 31 mainly is to utilize a mass storage data/address bus 405 (common to be CD-ROM drive/Winchester disk drive bus, ATAPI/IDE BUS for example) carries out the binding of intermodule and the transmission of signal, and can be electrically connected with mass storages such as a mass storage emulation interface circuit 404 (when mass storage data/address bus 405 during for CD-ROM drive/Winchester disk drive bus, mass storage emulation interface circuit 404 just is one CD-ROM drive/Winchester disk drive emulation interface circuit) and a CD-disc read-write equipment 407 on the mass storage data/address bus 405.And control circuit 402 is electrically connected between this network interface circuit 401 and this mass storage emulation interface circuit 404, control circuit 402 can read in the array digital multimedia packed data that is stored in the computer file server 30 a certain group by this network interface circuit 401 and this network 3, and should organize the digital multimedia packed data and transfer to this mass storage data/address bus 405 by this mass storage emulation interface circuit 404, broadcast by display and loud speaker 408 by the decoding of digital multimedia packed data decoder 406 again.Generally can be a multifunction laser optic disk video-audio data decoder (DVD decoder) with mass storage data bus interface (that common is CD-ROM drive/Winchester disk drive bus interface, for example ATAPI/IDE BUS Interface) as for this digital multimedia packed data decoder.High-speed cache 403 then can be deposited the data that some need be kept in for controller, for example the data directory in the computer file server 30.
Having, is the DVD data that file server 30 produces because the present invention uses again, but not entity DVD, so the space that the present invention can change is very big.But a general DVD reproduction time was about about two hours.If utilize above-mentioned means to relay a ball match, may relay half, the space of a virtual DVD uses up and can't continue.And the present invention also can comprise a technology and improves this phenomenon, is exactly when server produces the DVD data, and data are produced into two program fragments (track).DVD can specify, and when a program fragment (track) when finishing, begins to play another program fragment (track) automatically.Our method produces the program fragment (track) of two weak points exactly, for example each one minute (not necessarily wanting this length certainly).We earlier file server 30 make first one minute program fragment (track) image, begin then to play.Playing first minute program fragment when (track), server produces second program fragment (track) of one minute, broadcasts subsequently.We specify in the DVD data simultaneously, second finished in one minute after, first minute fragment is play in rebound.When playing second one minute fragment, server produces first fragment data of minute again.When intact second fragment of player plays, during first fragment of rebound, player can be asked for the data of first fragment place section (sector) via network to server.First fragment with initial broadcast is different for the data that this moment, server was sent.So between these two fragments, switch, just can utilize the finite data space of DVD to play the video-audio signal of unlimited time span.
In sum as can be known, digital multimedia player 31 among the present invention can utilize general DVD drive to reequip for the basis, only network interface circuit 401, control circuit 402, high-speed cache 403 and the mass storage emulation interface circuit 404 that need set up among Fig. 4 gets final product, even CD-disc read-write equipment 407 can be removed.Compare main frame and set-top box in the conventional means, because the relative low price of DVD drive, therefore manufacturing cost of the present invention can decline to a great extent, system complexity is also significantly simplified, and therefore can finish a with low cost but multiple functional digital multimedia content playing device really, and then realize main purpose of the present invention.And wireless network mainly also has specifications such as IEEE802.11a and IEEE 802.11g to use except that IEEE 802.11b, and so frequency range is just enough.Certainly the present invention can be appointed by those skilled in the art and executes the craftsman and think and do suitable modification, but it does not all break away from protection scope of the present invention.
Claims (11)
1. digital multimedia player is applied to it is characterized in that on the network that this player comprises:
One network interface circuit, signal are connected in this network, and it receives a digital multimedia packed data from this network, and this digital multimedia packed data is that the data format with a mass storage exists;
One mass storage data/address bus;
One mass storage emulation interface circuit is electrically connected on this mass storage data/address bus;
One control circuit, be electrically connected between this network interface circuit and this mass storage emulation interface circuit, it reads this digital multimedia packed data from this network interface circuit, transfer on this mass storage data/address bus by this mass storage emulation interface circuit again; And
One digital multimedia packed data decoder is electrically connected on this mass storage data/address bus, and it is deciphered this digital multimedia packed data that transmits on this mass storage data/address bus and broadcast.
2. digital multimedia player as claimed in claim 1 is characterized in that, this network is an Ethernet or wireless network, and this network interface circuit is an Ethernet interface circuit or radio network interface circuit.
3. digital multimedia player as claimed in claim 1, wherein this digital multimedia packed data is a part of multifunction laser optic disk video-audio data.
4. digital multimedia player as claimed in claim 1, it is characterized in that, this mass storage data/address bus is one CD-ROM drive/Winchester disk drive bus, and this mass storage emulation interface circuit is one CD-ROM drive/Winchester disk drive emulation interface circuit, and this digital multimedia packed data decoder is the multifunction laser optic disk video-audio data decoder with CD-ROM drive/Winchester disk drive bus interface.
5. digital multimedia player as claimed in claim 1 is characterized in that, also comprises a high-speed cache, and it is electrically connected on this controller, deposits the data that some need be kept in.
6. a digital multimedia broadcasting system is characterized in that, comprises:
One file server, wherein the data format with a mass storage comes storage arrays digital multimedia packed data;
One network; And
At least one digital multimedia player, it comprises: a network interface circuit, signal are connected in this network; One mass storage data/address bus; One mass storage emulation interface circuit is electrically connected on this mass storage data/address bus; One control circuit, be electrically connected between this network interface circuit and this mass storage emulation interface circuit, it reads in the array digital multimedia packed data that is stored in the file server one group by this network interface circuit and this network, and should organize the digital multimedia packed data and transfer on this mass storage data/address bus by this mass storage emulation interface circuit; And a digital multimedia packed data decoder, being electrically connected on this mass storage data/address bus, it is deciphered this digital multimedia packed data that transmits on this mass storage data/address bus and broadcast.
7. digital multimedia broadcasting system as claimed in claim 6 is characterized in that, this network is an Ethernet, and this network interface circuit is an Ethernet interface circuit.
8. digital multimedia broadcasting system as claimed in claim 6, it is characterized in that, stored array digital multimedia packed data is an array part multifunction laser optic disk video-audio data in this document server, make this document server only need produce the data of a period of time, just can begin to be transferred to digital multimedia player and play.
9. digital multimedia broadcasting system as claimed in claim 6, it is characterized in that, this mass storage data/address bus is one CD-ROM drive/Winchester disk drive bus, this mass storage emulation interface circuit is one CD-ROM drive/Winchester disk drive emulation interface circuit, and this digital multimedia packed data decoder is the multifunction laser optic disk video-audio data decoder with CD-ROM drive/Winchester disk drive bus interface.
10. digital multimedia broadcasting system as claimed in claim 6 is characterized in that, also comprises a high-speed cache, and it is electrically connected on this controller, deposits the data that some need be kept in.
11. digital multimedia broadcasting system as claimed in claim 6, it is characterized in that, the stored array digital multimedia packed data of this document server is represented several program fragments respectively and is formed a program, and it is finished data in the mode of taking turns and produces and play.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100785713A CN100531297C (en) | 2004-09-15 | 2004-09-15 | Digital multimedia transmission system and digital multimedia player set therein |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100785713A CN100531297C (en) | 2004-09-15 | 2004-09-15 | Digital multimedia transmission system and digital multimedia player set therein |
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| CN1588986A CN1588986A (en) | 2005-03-02 |
| CN100531297C true CN100531297C (en) | 2009-08-19 |
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| CNB2004100785713A Expired - Lifetime CN100531297C (en) | 2004-09-15 | 2004-09-15 | Digital multimedia transmission system and digital multimedia player set therein |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100508466C (en) * | 2007-01-16 | 2009-07-01 | 华为技术有限公司 | A method, system, terminal and server for playing media resource |
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Granted publication date: 20090819 |