Summary of the invention:
In order to realize the flexible transmission and the broadcast of network multimedia information, patent of the present invention adopts wired and wireless access technology, directly inserts electric network, with the mode of online download, carries out the broadcast of multimedia information and the processing of data file.Himself have network connection and communication interface network-connectable and receive multimedia and data file; Storage device can be kept at multimedia that receives and data file in the storage medium; Through multimedia and data processor multimedia and data file are handled operation, again by output device output multimedia and data-signal.
Technical scheme:
The novel portable multimedia storing and playing terminal equipment is shown in (Figure of description) figure one:
The novel portable multimedia storing and playing terminal equipment comprises: Network Interface Unit; The processor controls of the work of each functional module of control system; The storage device of store media files and storage medium carry out multimedia and the data file processor and the output device of processing operations to various multimedias and data file.
1) work of each functional module of processor controls control system realizes the management of storage medium and the operation of talk various network protocols simultaneously like demonstration, power management etc., makes system can connect storage medium and access diverse network.The software architecture of processor controls is open, through software upgrading.
2) multimedia and data file processor can be supported the multimedia and the data file of various different-formats, and it can support the multimedia and the data file of present main flow, like audio file: MP3, WMA, OGG etc.; Video file: MPEG4, AVI etc., text or the like.Multimedia and data file processor system can load multiple decoding and processing protocol through software upgrading, to adapt to new multimedia file format.
3) storage device and storage medium will be in order to preserving through the multimedia and the data file of network download.Its storage medium can be selected built-in IC storage chip or storage card or micro harddisk for use, is used to preserve the multimedia and the data file of download.
4) multiple electric network communication interfaces such as the built-in WiFi of Network Interface Unit, mobile radio communication and Ethernet; Can add multiple various network access protocol through software or hardware mode; Can insert electric network according to reality and independently insert the respective electronic network, network communicating functions such as automatic searching multimedia and data file in the respective electronic network.
5) output device: output device can be pressed different modes with the signal of handling through multimedia and data file processor and show, plays and output.Demonstration and output interface that its characteristics novel portable multimedia storing and playing terminal equipment capable of using is built-in are play various multimedias and data file, also can output on the peripheral equipment through the signal that output device was handled multimedia and data file processor to show, play and output.
Below realize doing further introduction with regard to the key technology of each functional module of these innovation and creation:
(1) the hoc network ruton communication function of novel portable multimedia storing and playing terminal equipment:
Its implication of hoc network ruton communication function of terminal equipment need not be done complicated operations and setting for the user; Only need terminal equipment is plugged into to corresponding network insertion interface; Terminal equipment can be autonomous communication protocol and the information search of the network address of realization network, and accomplish diverse networks such as online playing and download and operate.As far as the terminal use, this equipment has the network accessibility of " plug and play ".And the network accessibility of novel portable multimedia storing and playing terminal equipment will satisfy the access capability of various dissimilar wired and wireless networks, realizes terminal use's network insertion requirement anywhere or anytime in moving.
For realizing the hoc network ruton communication function of novel portable multimedia storing and playing terminal equipment; Need design consideration from hardware and software two aspects: hardware aspect, novel portable multimedia storing and playing terminal equipment must have and meet various dissimilar wired and the physical link layer (PHY) of wireless network and the interfaces of media application layer (MAC).Through physical link layer (PHY) and media application layer (MAC), the novel portable multimedia storing and playing terminal equipment just can be implemented in the intercommunication on the hardware view with wireless network with wired, as the basis of network communication.
Software aspect: through hardware; After novel portable multimedia storing and playing terminal equipment and wired and wireless network are implemented in the intercommunication on the hardware view; Terminal equipment must pass through built-in network communication protocol software, realizes the Handshake Protocol of network communication, sends the order of corresponding network operation; Packet is downloaded and uploaded to autonomous search response media resource.Also must have the network type discrimination function at this novel portable multimedia storing and playing terminal equipment software,, move corresponding procotol to guarantee independently carrying out of network communication with to the various network type.
Below be example with existing the Internet (Internet), to the hoc network ruton communication function of novel portable multimedia storing and playing terminal equipment, do one from hardware and software two aspects and introduce:
Hardware interface is shown in (Figure of description) figure two:
The built-in multiple various network interface of novel portable multimedia storing and playing terminal equipment is to be directed against various dissimilar wireless and cable networks.
WiFi interface (802.11) with wireless mode earlier with the communication of WiFi access server, both accomplish communication handshake mutual after, insert the Internet through the WiFi access server again.
Ethernet interface directly inserts the Internet by router or from LAN server, and its interface meets 10M/100M ethernet standard interface.
3G mobile communication interface inserts the 3G mobile network with the communication mode of code division multiple access, and the multimedia information can be provided by the multimedia content server among the 3G mobile network, also can insert the Internet indirectly by the 3G mobile network again and obtain the multimedia information.
The novel portable multimedia storing and playing terminal equipment can be realized the expansion of network interface with the mode of more other network hardware interfaces of plugging into, with diversity and the development that adapts to network.
This shows; Diversity and extensibility through the built-in hardware net interface of novel portable multimedia storing and playing terminal equipment; Guaranteed that from hardware aspect the novel portable multimedia storing and playing terminal equipment can be fit to different wireless and cable networks and insert, to realize terminal equipment access network anywhere or anytime.
The software aspect: with present most widely used the Internet (Internet) is example; Automatic identification and automated communications access through software are described, are realized this novel portable multimedia storing and playing terminal equipment network access facility of " plug and play " in network.
Modal in the Internet inserts have a dual mode: in the local area network (LAN) through server and router access and with the dial-up access of modes such as ADSL shown in (Figure of description) figure three:
1) in local area network (LAN), insert through server and router:
Be docked with on the network interface at the novel portable multimedia storing and playing terminal equipment; Processor controls is the operational network communication software automatically; Earlier detect the 10/100M Ethernet interface through the interface automatic recognition software; Obtain interim IP address with embedded network communication protocol DHTP through router and LAN server; By the local network accessing Internet, according to the IP address (fixed IP addresses: can be provided with by the novel portable multimedia storing and playing terminal equipment) of multimedia content server, the multimedia information is uploaded and downloaded to processor controls operation ICP/IP protocol with the mode of IP bag again.Network communication software comprises that also network texts such as HTML, Java resolve software, can download and display web page, can on the novel portable multimedia storing and playing terminal equipment, carry out the operation of network, like search file, address etc. is set.
2) with the dial-up access of modes such as ADSL:
Be docked with on the network interface at the novel portable multimedia storing and playing terminal equipment; Processor controls is the operational network communication software automatically; Earlier detect dialing interface through the interface automatic recognition software; With equipment such as ADSL access device in the embedded dial-up program connection communication network and servers; Through automatic identity authentication, distribute an interim IP address by access server, insert the Internet through access server again; According to the IP address (fixed IP addresses: can be provided with by the novel portable multimedia storing and playing terminal equipment) of multimedia content server, the multimedia information is uploaded and downloaded to processor controls operation ICP/IP protocol with the mode of IP bag.Network communication software comprises that also network texts such as HTML, Java resolve software, can download and display web page, can on the novel portable multimedia storing and playing terminal equipment, carry out the operation of network, like search file, address etc. is set.Shown in (Figure of description) figure four:
More than for example, sketch the workflow of the network communication software of Ethernet, can insert other diverse networks in a similar manner equally.The network communication software bag of novel portable multimedia storing and playing terminal equipment is moved by processor controls, and its structure is an open architecture, can upgrade through software, to adapt to the needs of network development.As in the network of IPv6 of future generation, each novel portable multimedia storing and playing terminal equipment can have independent IP address, need not the interim distributing IP of access server, and the ability of its network insertion will increase greatly, and network insertion will be more convenient also.
Introduce second key technology of this novel portable multimedia storing and playing terminal equipment below:
(2) open architecture of multimedia and data file processor system: multimedia in the novel portable multimedia storing and playing terminal equipment and data file processor system can load multiple decoding and processing protocol through software upgrading, to adapt to new multimedia file format.
The multimedia information can be divided into several big type of text message, audio stream, video flowing etc. substantially.When transmission over networks; The multimedia information all occurs with the mode of digital signal (Digital Signal); Particularly because the file size of audio stream, video flowing is very big; At present according to the document characteristic of audio stream, video flowing, a series of compression algorithms to multimedia files such as audio stream, video flowings have appearred: as to the MP3 of audio stream, WMA, AMR, AAC, OGG etc. with to the MPEG of video flowing, WMV, Real, 3GPP etc.Above-described audio frequency and video compressed format all can abstractly be the compress mode (DigitalSignal Compression) of digital signal.And decompress(ion) and the reduction in the novel portable multimedia storing and playing terminal equipment, audio frequency and video compressed can abstractly be the processing (Digital Signal Process) of digital signal.
In order in this novel portable multimedia storing and playing terminal equipment, to play various dissimilar audio-video documents, also consider upgrading simultaneously to new audio frequency and video compressed format.Multimedia that in the novel portable multimedia storing and playing terminal equipment, adopts and data file processor are open architecture; Its system can be through software upgrading; And load multiple decoding and processing protocol; To adapt to various dissimilar multimedia file formats, can tackle the upgrading of multimedia file format simultaneously.
The system block diagram that below is multimedia and data file processor is shown in (Figure of description) figure five:
Digital signal processing unit is made up of several parts such as acoustic convolver, shift unit and metadata caches.Complicated Digital Signal Processing (DSP) computing all can be considered constituting by most basic digital signal computings such as convolution, displacements; The various combination that is made up of acoustic convolver, shift unit and metadata cache can be realized the various complex calculation of digital signal, like DCT/IDCT (number cosine converting/anti-number cosine converting), FFT (fast Fourier transform) etc.And various multimedia file formats can be considered like: MP3, MPEG4 etc. and are made up of the Digital Signal Processing of complicacy and conversion.Like this,, can accomplish the most complicated Digital Signal Processing function, comprise processing various multimedia file formats according to different compositions and order of operation by digital signal computings such as the simplest convolution and displacements.
In multimedia and data file processor,, will be stored in the digital signal processing algorithm program internal memory to the form algorithm of dissimilar multimedias and data file for realizing the processing of various different multimedia files and data file.When carrying out the processing of multimedia and data file, the operation program controller, takes out corresponding algorithm routine, and is loaded in the digital signal processing unit from the digital signal processing algorithm program internal memory according to the multimedia and the document format data of required processing.Like this, digital signal processing unit just can carry out corresponding multimedia and data file processing according to this algorithm routine.
Digital signal through digital signal processing unit is handled through the encoding-decoding process of digital signal codec, is reduced to raw digital signal such as audio frequency and video again.
Digital signals such as audio frequency and video export corresponding output device to again by digital signal input and output buffer unit.
Like this, multimedia and data file processor have just been accomplished processing and the output to multimedia file and data file.From the above; Because the corresponding data algorithm of multimedia and data file is loaded on digital signal processing unit by the algorithm routine internal memory; Like this; The framework of whole multimedia and data file processor is open, through loading the different algorithms program with regard to scalable support different multimedia and document format data, has guaranteed the upgradability and the flexibility of system.
Figure below be the functional flow diagram of multimedia and data file processor shown in (Figure of description) figure six:
The first step: in the metadata cache that the multimedia and the data file of required processing is inputed to digital signal processing unit by input-buffer;
Second step: the operation program controller detects multimedia and document format data type;
The 3rd step: the operation program controller is searched for corresponding algorithm software according to detected multimedia and data file class from the algorithm routine internal memory, and is loaded in the digital signal processing unit;
The 4th step: according to the algorithm software that is loaded, digital signal processing unit carries out calculation process with the synthetic corresponding multimedia of Digital Signal Processing functionalities such as convolution, displacement and data file Processing Algorithm and to it;
The 5th step: being reappeared through the digital codec coding by the digital signal after the digital signal processing unit processing is original digital signals such as audio frequency and video;
The 6th step: export digital signal to corresponding output device via output buffers again.
The beneficial effect of the invention is:
1) the novel portable multimedia storing and playing terminal equipment is with WiFi, 3G, and Ethernets etc. are various wiredly to be connected in the network with wireless interface technology, need not computer, realization network service that can be autonomous realizes online anywhere or anytime.
2) multimedia of novel portable multimedia storing and playing terminal equipment can load different decodings and processing protocol with data file processor, can carry out system upgrade through network, to adapt to new function and multimedia file format.
3) output device of novel portable multimedia storing and playing terminal equipment can be pressed the different modes demonstration with the signal of handling through multimedia and data file processor, play and output.Be characterized in that demonstration and output interface that novel portable multimedia storing and playing terminal equipment capable of using is built-in play various multimedias and data file, also can output on the peripheral equipment and show, play and output through the signal that output device was handled multimedia and data file processor.