CN1294755C - Multimedia terminal - Google Patents
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- CN1294755C CN1294755C CNB2004100393331A CN200410039333A CN1294755C CN 1294755 C CN1294755 C CN 1294755C CN B2004100393331 A CNB2004100393331 A CN B2004100393331A CN 200410039333 A CN200410039333 A CN 200410039333A CN 1294755 C CN1294755 C CN 1294755C
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- 238000004891 communication Methods 0.000 claims abstract description 70
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- 230000010365 information processing Effects 0.000 claims description 5
- 230000005236 sound signal Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 description 15
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
- H04N21/4351—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream involving reassembling additional data, e.g. rebuilding an executable program from recovered modules
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4331—Caching operations, e.g. of an advertisement for later insertion during playback
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/44209—Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/637—Control signals issued by the client directed to the server or network components
- H04N21/6375—Control signals issued by the client directed to the server or network components for requesting retransmission, e.g. of data packets lost or corrupted during transmission from server
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
- H04N7/163—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
- Databases & Information Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The present invention discloses a multimedia terminal which is used for enabling a television terminal to be connected to a data communication network. The present invention comprises a network interface unit, a data processing unit, a control unit, a storage unit, a decoding unit, a play output unit and an external control input unit, wherein the data processing unit is connected with the network interface unit; the control unit is respectively connected with the network interface unit, the data processing unit and all following units; the storage unit is connected with the data processing unit and is used for storing multimedia information separated from the data processing unit; the decoding unit is connected with the data processing unit and the storage unit, and the play output unit is respectively connected with the decoding unit and the television terminal; the external control input unit is connected with the control unit. The multimedia terminal of the present invention can download multimedia information requested by a user in advance under the condition that the existing data communication network can not completely ensure a user to access a bandwidth to enable the following non-real-time play can be carried out, and a user can watch programs which are continuously played.
Description
Technical field
The present invention relates to multimedia technology field, particularly a kind of multimedia terminal that is applied in the multimedia technology field.
Background technology
Along with the continuous development of modern network technology and multimedia communication technology, (STB, Set-Top-Box) series products begins little by little to come into huge numbers of families based on the set-top box of user-interactive video request program (VOD) technology.Such set-top box device has changed in the past, and the user can only passively watch limited the fixedly receive mode of broadcast TV channel, make the user can be according to the demand of oneself, select the multimedia resource on the playing network flexibly and easily, thereby be more suitable for the needs of home entertaining life.
The application of existing video frequency requested program broadcasting-like set-top box device, basically also just rest in the less network range of cell-level, in such network, can store certain multi-medium data resource on the server, be used for providing video-on-demand service to a limited number of users.For satisfying user's video request program demand, network must guarantee to provide the stable data bandwidth for each online user.For example, when the multi-medium data of user's program request MPEG2 form, network must guarantee to provide the data traffic of 3Mbps～8Mbps.The cell-level network is because customer volume is less, as long as the server configuration is suitable, just can satisfy user's demand preferably.
But, when the bigger metropolitan area level network of scope that video-on-demand service further is generalized to, because the rapid increase of number of users, may cause that network can't guarantee to distribute enough access bandwidths into each set-top box device, thereby cause set-top box receiving multimedia information continuously, make the user can not watch the program of continuous broadcast by set-top box; Even can cause set-top box go offline, can't access network and serious consequence such as network paralysis.
Simultaneously, because data communication network is interconnected, open, can make circulate on network safety of data, legitimacy be difficult to be protected.Scatter illegal speech by network, and also be to occur repeatedly on present internet by illegal activities such as network piracies.Therefore; when TV is connected to data communication network by set-top box device; how effectively the legitimacy of user identity to be verified flexibly; and prevent that illegal network side equipment from sending illegal media information to the user; and multi-medium data resource mutual on the network carried out knowledge copyright protection effectively etc., all be IVOD business urgent problem in the popularization process.
Summary of the invention
The present invention proposes a kind of multimedia terminal with memory function, can't guarantee under the situation of user's access bandwidth fully to be implemented in the available data communication network, can carry out the multimedia messages of downloaded stored user program request in advance, so that the follow-up non real-time that carries out plays, thereby make the user watch the program of continuous broadcast.
For addressing the above problem, the present invention proposes a kind of multimedia terminal, be used to make television terminal to be connected to data communication network, comprising:
Network interface unit is connected with described data communication network, is used for from data communication network transceive data information;
First descrambler is connected with data processing unit, is used for the isolated scrambled multimedia information of data processing unit is carried out scramble process; Be connected with memory cell, be used for the scrambled multimedia information of cell stores is carried out scramble process;
Data processing unit is connected with described network interface unit, sends to data communication network by network interface unit after being used for described multimedia terminal input various are uploaded the data message that information processing becomes to meet the data communication network respective protocol; Be used for simultaneously receiving the processing that the data message that comes separates multimedia messages and control information from network interface unit;
Wherein said data processing unit further comprises: the authentication subelement, be connected with described network interface unit, and the data message that is used for network interface unit is sent carries out the legitimacy authentication operations; The data separating subelement is connected with decoding unit with described authentication subelement respectively, is used for separate the operation of multimedia messages and control information through the legal data message after the authentication subelement authentication process; Data send subelement, be connected with network interface unit with described control unit respectively, be used for the input of described multimedia terminal upload the data message that information processing becomes to meet the data communication network respective protocol after send to corresponding data communication network by network interface unit;
Control unit is connected with described network interface unit, data processing unit and follow-up each unit respectively, is used to receive the control information that data processing unit sends and controls interworking between each unit;
Memory cell is connected with described data processing unit with decoding unit by first descrambler, is used to store the isolated multimedia messages of data processing unit;
Decoding unit is connected with memory cell with described data processing unit respectively, is used for the multimedia messages of isolated multimedia messages of data processing unit or cell stores is carried out decoding processing;
Intelligent card interface, be connected with described control unit, be used for reading the smart card stored user information, so that the user profile that the control unit utilization is read is carried out corresponding calculation process, and the scrambled multimedia information of the data processing unit being sent by first descrambler of Data Control after the calculation process or the scrambled multimedia information of cell stores are carried out scramble process;
Play output unit, be connected with television terminal with described decoding unit respectively, the multimedia messages after the decoding processing that is used for decoding unit is sent converts to and is suitable for the analog or digital signal that television terminal is play, and sends on the television terminal and plays;
The external control input unit is connected with described control unit, is used for user's operation information is input to control unit, so that control unit converts the operation information of user's input to the information of uploading of described multimedia terminal input.
Described multimedia terminal also comprises:
The multimedia messages input interface is used to read the multimedia messages of multimedia messages input equipment input;
Coding unit, be connected with data processing unit with described multimedia messages input interface respectively, the multimedia messages that is used for the multimedia messages input interface is read carries out encoding process, and the multimedia messages after the encoding process is sent to data processing unit as the information of uploading of described multimedia terminal input carries out data processing.
Wherein said coding unit further is connected with data processing unit by described memory cell, the multimedia information storage of described coding unit after with encoding process be to memory cell, so that the multimedia messages that the follow-up data processing unit reads in the memory cell behind the coding of storage is again handled or play-overed by described multimedia terminal.
Described multimedia terminal also comprises scrambler, described coding unit further is connected with data processing unit by this scrambler, described scrambler is used for handling carrying out scrambling through the multimedia messages after the coding unit encoding process, and the multimedia messages after scrambling handled sends to data processing unit as the input information of described multimedia terminal and carries out data processing.
Described multimedia terminal also comprises:
The cable TV network interface is connected with cable television network, is used to receive the radio-frequency (RF) digital TV signal that cable television network transmits;
Tuner is connected with described cable TV network interface, and the radio-frequency (RF) digital TV signal that is used for the cable TV network interface is sent is tuned to the intermediate frequency digital television signal;
Demodulator is connected with described tuner, and the intermediate frequency digital television signal that is used for tuner is sent is demodulated to the transport stream that mainly comprises digital audio and video signals, digital video signal; And
Demodulation multiplexer is connected with decoding unit with described demodulator respectively, is used for the transport stream that the transport stream sent at demodulator is extracted a program, and the transport stream that will extract program sends to decoding unit and carries out decode operation.
Described multimedia terminal also comprises second descrambler, described demodulation multiplexer further is connected with decoding unit by this second descrambler, described second descrambler sends to decoding unit again and carries out decoding processing after being used for the scrambling transport stream that demodulation multiplexer extracts program carried out scramble process.
The present invention can reach following beneficial effect:
The memory cell of multimedia terminal of the present invention by being provided with, can can't guarantee that each user has enough access bandwidths to carry out receiving data information at data communication network, thereby when causing the user to watch multimedia programming continuously, can download multimedia messages in advance, and with the multimedia information storage downloaded in memory cell, so that follow-up time reads out the multimedia messages of storage again from memory cell, carrying out the non real-time broadcast watches, therefore having solved at data communication network can not provide under the condition of enough access bandwidths, also can make the user watch the programme information of continuous broadcast.
Multimedia terminal of the present invention can be carried out descrambling and watch by first descrambler and intelligent card interface are set to the multimedia messages of scrambling, thus the fail safe that has improved multimedia messages.
Multimedia terminal of the present invention again and then increase the authentication subelement is arranged, can be carried out authentication process to the data message that the data communication network is sent, thereby can guarantee that the user can only receive legal data message in data processing unit.
Multimedia terminal of the present invention also is provided with multimedia messages input interface and coding unit simultaneously, can encode, preserve the multimedia messages of external multimedia input equipment input, watch or send to data communication network directly the multimedia messages decoding of preserving is play by follow-up multimedia terminal.
Multimedia terminal of the present invention can be inserted on the basis of data communication network existing, again and then increase cable TV network interface, tuner, demodulator and demodulation multiplexer, thereby make television terminal by multimedia terminal of the present invention, not only can carry out interactive type communication, and can receive the digital television signal of cable television network simultaneously with data communication network.
Description of drawings
Fig. 1 is the multimedia terminal of the present invention first example structure composition frame chart;
Fig. 2 is the multimedia terminal of the present invention second example structure composition frame chart;
Fig. 3 is multimedia terminal of the present invention the 3rd an example structure composition frame chart;
Fig. 4 is the concrete structure composition frame chart of data processing unit inside in the multimedia terminal of the present invention;
Fig. 5 is a concrete structure composition diagram of playing output unit inside in the multimedia terminal of the present invention;
Fig. 6 is the simple network structured flowchart that multimedia terminal of the present invention and digital cable TV net, data communication network are formed;
Fig. 7 utilizes data communication network to carry out the processing procedure schematic diagram of video communication between the multimedia terminal of the present invention:
Embodiment
With reference to Fig. 1, this figure is the multimedia terminal of the present invention first embodiment composition frame chart; The multimedia terminal mainly comprises network interface unit S1 among the figure, data processing unit S2, and the first descrambler S3, decoding unit S4 plays output unit S5, control unit S7, memory cell S8, intelligent card interface S9 and external control input unit S10; Wherein the effect of each unit and annexation thereof are as follows:
Network interface unit S1 is connected with described data communication network, is used for from data communication network transceive data bag; Wherein said data communication network can be Internet net, IP metropolitan area network etc.Network interface unit S1 can select different interface modules for use corresponding to different data access, as Ethernet card, ADSL (Asymmetric Digital Subscriber Line) (ADSL, Asymmetric Digital Subscriber Line) access card etc.Network interface unit S1 is according to different access waies, and its transmission rate is from 512Kbps to 10Mbps.It is a kind of process of two-way mutual that multimedia terminal and external data communication net communicate.Described network interface unit S1 initiates request according to user's operation control (as download, video request program etc.) to the server of data communication network; And the data message sent of the server that receives data communication network.
Data processing unit S2, S1 is connected with network interface unit, is used for the uploading after information processing becomes to meet the data message of data communication network respective protocol of the various inputs of multimedia terminal, and S1 sends to data communication network by network interface unit.Wherein the input information of multimedia terminal comprises user operation information of importing and the multimedia messages that utilizes multimedia messages input equipments inputs such as video camera, microphone etc.;
Data processing unit S2 also is used for the data message that network interface unit S1 sends is separated the processing of multimedia messages and control information simultaneously; Wherein the data message that feeds back to from data communication network generally comprises multimedia messages and control information etc., wherein multimedia messages is the demand information of user's program request, and isolated multimedia messages can further send to the first follow-up descrambler S3 or send among the memory cell S4; Control information mainly is a reflection data communication net state, and whether server state and user's operation successfully wait data message, can be forwarded to control unit S7 after wherein isolating control information.
Control unit S7 is connected with follow-up each unit with network interface unit S1, data processing unit S2 respectively, is used to receive the control information that data processing unit S2 sends and controls interworking between each unit; Control unit S7 also will control in real time to follow-up descrambling process simultaneously.
The first descrambler S3, S2 is connected with data processing unit, is used under the control of control unit S7, and the isolated scrambled multimedia information of data processing unit S2 is carried out scramble process.Because the multimedia messages of sending from data communication network can be the scrambled multimedia information after handling through scrambling, also can be the not scrambled multimedia information of handling without the mistake scrambling, when the isolated multimedia messages of data processing unit S2 is scrambled multimedia information, just need carry out scramble process by the first descrambler S3, and, just needn't carry out scramble process by the first descrambler S3 when the isolated multimedia messages of data processing unit S2 during for scrambled multimedia information not; But directly carry out follow-up decoding processing.
Memory cell S8, S2 is connected with data processing unit, be used to store the isolated multimedia messages of data processing unit S2, because in some cases, may be too much because of the number of users of vod server in the while visit data communication network, and it is narrow to make that each user inserts in the data communication network access bandwidth of vod server, thereby cause the user can not watch the multimedia programming of high speed dynamic change continuously, then in this case, multimedia terminal of the present invention can so that by after the multi-medium data that receives from network interface unit S1 the separating treatment through data processing unit S2, with isolated multimedia messages elder generation downloaded stored in this memory cell S8, after waiting until that then multimedia messages that the user needs all stores memory cell S8 into, carry out follow-up operation again.If the multimedia messages of storage is a scrambled multimedia information, then the multimedia messages that memory cell S8 is stored sends among the first descrambler S3 and carries out scramble process, and do not pass through under the situation of scrambling at the multimedia messages that data communication network is sent, then do not need to send to the first descrambler S3 and carry out scramble process, directly carry out decoding processing but directly send to decoding unit S4; Can be mobile memory medium or fixed memory medium such as disk, tape such as portable hard drive as this memory cell S8.
Decoding unit S4 is connected with the first descrambler S3 or directly is connected with memory cell S8, be used for the multimedia messages behind the first descrambler S3 descrambling is carried out decoding processing, or reading cells S8 in advance the multimedia messages of downloaded stored carry out decoding processing; If multimedia messages is during for scrambled multimedia information not, the first descrambler S3 just can not carry out any processing to the multimedia messages of isolated multimedia messages of data processing unit S2 or memory cell S8 storage, but directly carries out decoding processing by decoding unit S4;
Play output unit S5, be connected with television terminal S6 with described decoding unit S4 respectively, multimedia messages after the decoding processing that is used for decoding unit S4 is sent carries out all or part of digital-to-analogue conversion to be handled, after making it to convert to the analog or digital video/audio signal, send on the television terminal and play;
External control input unit S10, S7 is connected with control unit.It is that the user is input to control unit S7 to the information of choosing or the operation information of program that external control input unit S10 mainly acts on.Wherein this external control input unit S10 can be Infrared remote controller commonly used, also can be for keyboard/mouse equipment etc., and its operating process is similar to the input process of choosing of present TV programme or computerized information.
Intelligent card interface S9, also be connected on the control unit S7, be used for reading the smart card stored user information (generally speaking, for realizing watching to scrambled multimedia information, network side can carry out scrambling to the multimedia messages of user's request program according to a user's information to be handled, so in the multimedia terminal side, by these user profile of record in the smart card of handing the user, thereby can realize scrambled multimedia information is carried out the processing of descrambling), so that control unit S7 utilizes the user profile that reads to carry out corresponding calculation process, and, the scrambled multimedia information that data processing unit S2 sends is carried out scramble process by the Data Control first descrambler S3 after the calculation process.
With reference to Fig. 2, this figure is the multimedia terminal of the present invention second example structure composition frame chart.This embodiment is on the basis of above-mentioned first embodiment, again and then increase multimedia messages input interface S13 is arranged, coding unit S12 and scrambler S11, in the time of can carrying out interactive type communication with data communication network to be implemented in this multimedia terminal, again and then can realize that the data message that coded multimedia information that this multimedia terminal is received becomes to meet the data communication network respective protocol sends to data communication network, perhaps can and then store in order to follow-up play-overing and watch, wherein the effect of newly-increased each unit be:
Multimedia messages input interface S13 is used to read the multimedia messages of multimedia messages input equipment S14 input; Wherein multimedia messages input equipment S14 can be multimedia equipments such as existing video camera, camera and microphone, wherein multimedia messages input interface S13 is exactly a circumscription socket, multimedia messages input equipment S14 such as this socket can external these video cameras, camera and microphone are used for the multimedia messages that these multimedia messages input equipments S14 gathers is read in into;
Coding unit S12, be connected with data processing unit S2 with described multimedia messages input interface S13 respectively, be used for the multimedia messages that multimedia messages input interface S13 reads is carried out encoding process, and the multimedia messages after the encoding process is sent to data processing unit S2 as the information of uploading of above-mentioned multimedia terminal input carry out data processing, send to data communication network again with the data message form that is processed into respective protocol.Thereby realize the interactive function of the multimedia messages between the different multimedia terminal.
Certainly, coding unit S12 can also further be connected with data processing unit S2 by scrambler S11, so that after handling through the scrambling of this scrambler S11 again through the multimedia messages after the coding unit S12 encoding process, send to data processing unit S2 again and carry out sending to data communication network after the data message conversion process of respective protocol.
Coding unit S12 also can be connected with memory cell S8 simultaneously, so that directly be stored among the memory cell S8 through the multimedia messages after the coding unit S12 encoding process, watches to play-over at follow-up time.
Lifting a user below uses this multimedia terminal and data communication network to carry out the processing procedure of the two-way interactive of video communication, with reference to Fig. 7, this figure utilizes data communication network to carry out the processing procedure schematic diagram of video communication between the multimedia terminal of the present invention: concrete processing procedure is as follows
A holds (sender)
1) video camera 260 is connected respectively to the multimedia messages input interface S13 of multimedia terminal 220;
2) multimedia messages input interface S13 sends to coding unit S4 with multimedia messagess such as the multimedia image received, voice datas;
3) coding unit S4 carries out compressed encoding (as MPEG1,2, coded formats such as 4) with multimedia messagess such as multimedia image, audio-frequency informations according to set form, and the multimedia messages that will obtain after will compressing sends to scrambler S11;
4) if the user wishes to protect private data information, scrambler S11 can carry out scrambling operation to it, generates multimedia messages and key information after the scrambling respectively, sends it to data processing unit S2 then; If the user requires data message is not protected, scrambler S11 can carry out do-nothing operation, and the multimedia messages after directly will compressing sends to data processing unit S2;
5) data processing unit S2 handles the multimedia messages that receives, and is converted into the data message form of the respective communication agreement that meets data communication network, and sends to network terminal by network interface unit S1.
B holds (recipient)
6) the network interface unit S1 of receiving terminal multimedia terminal receives the data message that the A end subscriber sends from data communication network, and sends it to data processing unit S2;
7) data processing unit S2 separates the multimedia messages in the data message, and sends it to the first descrambler S3;
8) the first descrambler S3 at first judges the multimedia messages that receives, and as finding multimedia messages the scrambling operation has been arranged, just it is carried out corresponding scramble process; As find that multimedia messages does not carry out scrambling and handles, then the first descrambler S3 carries out do-nothing operation; Multimedia messages after the first descrambler S3 will handle sends to decoding unit S4;
9) decoding unit S4 carries out decode operation to the multimedia messages that receives, and digital audio, the video information that generates sent to broadcast output unit S5;
10) play output unit S5 audio frequency, vision signal are carried out corresponding digital-to-analogue conversion processing, it is play on television terminal.
In like manner, as the role transforming with A, B two ends, even A end is receiving terminal, the B end is transmitting terminal, and its workflow if A, B two ends are operated in dual-mode, just can realize the multimedia conversation business of two end subscribers as mentioned above.
With reference to Fig. 3, this figure is the 3rd an example structure composition frame chart of multimedia terminal of the present invention; This embodiment is on the basis of first embodiment, again and then add cable TV network interface S15, tuner S16, demodulator S17, the demodulation multiplexer S18 and the second descrambler S19, can carry out on the basis of interactive type communication with data communication network thereby be implemented in multimedia terminal of the present invention, can and then receive the digital television signal that cable television network is sent, wherein the concrete effect of each unit is as follows:
Cable TV network interface S15 is connected with cable television network, is used to receive the radio-frequency (RF) digital TV signal that cable television network transmits; It in multimedia terminal of the present invention an external interface;
Tuner S16, S15 is connected with the cable TV network interface, and the radio-frequency (RF) digital TV signal that is used for the cable TV network interface is sent converts the intermediate frequency digital television signal to;
Demodulator S17, S16 is connected with tuner, and the intermediate frequency digital television signal that is used for tuner S16 is sent is demodulated to the transport stream that mainly comprises digital audio and video signals, digital video signal; And
Demodulation multiplexer S18 is connected with decoding unit S4 with demodulator S17 respectively, is used for the transport stream that the transport stream sent at demodulator S17 is extracted a program, and the transport stream that will extract program sends to decoding unit S4 and carries out decode operation;
Certainly, demodulation multiplexer S18 can and then be connected with decoding unit S4 by the second descrambler S19, because the TV signal transport stream of sending for cable television network also is divided into scrambling transport stream and two kinds of situations of not scrambling transport stream, when receiving the scrambled television transport stream signal, will utilize the second descrambler S19 that the scrambling transport stream that receives is carried out sending to decoding unit S4 again after the scramble process and carry out decoding processing, and when receiving not the scrambled television transport stream signal, just needn't utilize the second descrambler S19 that the not scrambling transport stream that receives carry out scramble process, carry out decoding processing but directly send to decoding unit S4.
With reference to Fig. 6, this figure is the simple block diagram that multimedia terminal of the present invention and cable television network, data communication network are formed network configuration; As seen from the figure, multimedia terminal 220 of the present invention can receive the digital television program signal that Broadcast and Television Center 200 is provided by inserting in the cable television network 210, and then sends to after treatment on the television terminal S6 and play.Multimedia terminal 220 of the present invention can also be by being linked in the data communication network 250 simultaneously, and then and multimedia server 240 carry out interactive type communication, according to some TV program information of request program request of user, play the TV program information of program request more after treatment multimedia terminal 220 on television terminal S6 then.
With reference to Fig. 4, this figure is the concrete structure composition frame chart of data processing unit inside in the multimedia terminal of the present invention; Data processing unit S2 mainly comprises: authentication subelement S200, and data separating subelement S210 and data send subelement S220, and the concrete effect of each subelement is as follows:
Data send subelement S220, be connected with network interface unit S1, control unit S7, coding unit S12 and memory cell S8 simultaneously, behind the data message form of the data communication network respective protocol after the encoded cell S 12 of the information of uploading that the multimedia terminal that is used for that control unit is generated is imported is handled, send to corresponding data communication network by network interface unit S1; Also be used for simultaneously be stored in after the encoding process memory cell S8 upload the data message form that multimedia messages is converted to respective protocol after send to corresponding data communication network by network interface unit S1; After equally also being used for the information of uploading of external control input unit S10 input carried out protocol conversion process, send to corresponding data communication network by network interface unit S1.
Authentication subelement S200, be connected with data separating subelement S210 with network interface unit S1, control unit S7 respectively, be used under the control action of control unit S7, the data message that the data communication network that network interface unit S1 is received is sent carries out the authentication analysis.
Concrete authentication process is:
1. authentication subelement S200 receives the data message that network interface unit S1 sends;
2. control unit S7 reads the authentication information in the smart card, and sends it to authentication subelement S200;
3. the authentication information that provides according to smart card of authentication subelement S200 carries out the authentication computing to the data message that receives from data communication network, judges the validity of this data message.It is believed that in full breath is effective, authentication subelement S200 sends to data separating subelement S210 with this data message;
It is believed that in full breath is invalid, authentication subelement S200 abandons this data message, and sends miscue information to control unit S7.
Data separating subelement S210 is connected with memory cell S8 or with the first descrambler S3 with authentication subelement S200 respectively, and the data message that is used for data communication network is returned carries out classification transmission.The data message that data communication network returns generally partly is made up of multimedia messages and control information two.Wherein, multimedia messages is the required data message of user, data separating subelement S210 is after distinguishing multimedia messages, can be in the mode of operation of real-time VOD or non real-time download according to this multimedia terminal, this multimedia messages is forwarded to the first descrambler S3 respectively carry out descrambling operation or be transmitted to memory cell S8 carrying out downloaded stored in advance; Control information mainly is whether reflection network state, server state and user's operation successfully wait data message, and the data separating module can be forwarded to it control unit S7 after distinguishing control information.
With reference to Fig. 5, this figure is a concrete module composition frame chart of playing output unit inside in the multimedia terminal of the present invention; As figure, play output unit S5 under the control action of control unit S7, audio interface with decoding unit S4 and television terminal is connected with video interface respectively, be used for that the decoded digital audio of decoding unit S4, digital video information are carried out digital-to-analogue conversion and handle, make on its audio interface and video interface that can output to simulated television terminal or digital TV terminal respectively; As figure, further comprise audio frequency digital-to-analogue conversion subelement S50 and video digital-to-analogue conversion subelement S51 among the broadcast output unit S5, the concrete effect of its each part is as follows:
After broadcast output unit S5 receives decoded digital audio and video signals, digital video signal from decoding unit S4, because the television terminal that is connected on the multimedia terminal of the present invention can be common simulated television terminal, also digital TV terminal be can be, and video interface and audio interface all provided on simulated television terminal and the digital TV terminal.
For the simulated television terminal, play output unit S5 and need pass through audio frequency digital-to-analogue conversion subelement S50, after digital audio and video signals was converted to the simulated audio signal that the simulated television terminal can receive, the audio interface that just can send to the simulated television terminal was play; Need simultaneously by video digital-to-analogue conversion subelement S51, after digital video signal is converted to the analog video signal that the simulated television terminal can receive, just the video interface that can send to the simulated television terminal is play, promptly by after the conversion process of video digital-to-analogue conversion subelement S51, digital video signal is converted to row, field scan analog signal, for the simulated television terminal plays.
For digital TV terminal, play output unit S5 and can directly digital audio and video signals be sent to the audio interface of digital TV terminal, and do not need to pass through again the conversion process of audio frequency digital-to-analogue conversion subelement S50; During fast acquisition of digital video signals, handle by the digital-to-analogue conversion of video digital-to-analogue conversion subelement S51 equally, be about to digital video signal and be converted to row, field scan analog signal, play for digital TV terminal.
Certainly, on the basis of each embodiment that multimedia terminal of the present invention can also be said, carry out the combination in any of each embodiment in the above, to realize various objectives.
The above only is a preferred implementation of the present invention.Should be pointed out that for those skilled in the art under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1, a kind of multimedia terminal is used to make television terminal to be connected to data communication network, it is characterized in that, comprising:
Network interface unit is connected with described data communication network, is used for from data communication network transceive data information;
First descrambler is connected with data processing unit, is used for the isolated scrambled multimedia information of data processing unit is carried out scramble process; Be connected with memory cell, be used for the scrambled multimedia information of cell stores is carried out scramble process;
Data processing unit is connected with described network interface unit, sends to data communication network by network interface unit after being used for described multimedia terminal input various are uploaded the data message that information processing becomes to meet the data communication network respective protocol; Be used for simultaneously receiving the processing that the data message that comes separates multimedia messages and control information from network interface unit; Comprise: the authentication subelement, be connected with described network interface unit, the data message that is used for network interface unit is sent carries out the legitimacy authentication operations; The data separating subelement is connected with decoding unit with described authentication subelement respectively, is used for separate the operation of multimedia messages and control information through the legal data message after the authentication subelement authentication process; Data send subelement, be connected with network interface unit with described control unit respectively, be used for the input of described multimedia terminal upload the data message that information processing becomes to meet the data communication network respective protocol after send to corresponding data communication network by network interface unit;
Control unit is connected with described network interface unit, data processing unit and follow-up each unit respectively, is used to receive the control information that data processing unit sends and controls interworking between each unit;
Memory cell is connected with described data processing unit with decoding unit by first descrambler, is used to store the isolated multimedia messages of data processing unit;
Decoding unit is connected with memory cell with described data processing unit respectively, is used for the multimedia messages of isolated multimedia messages of data processing unit or cell stores is carried out decoding processing;
Intelligent card interface, be connected with described control unit, be used for reading the smart card stored user information, so that the user profile that the control unit utilization is read is carried out corresponding calculation process, and the scrambled multimedia information of the data processing unit being sent by first descrambler of Data Control after the calculation process or the scrambled multimedia information of cell stores are carried out scramble process;
Play output unit, be connected with television terminal with described decoding unit respectively, the multimedia messages after the decoding processing that is used for decoding unit is sent converts to and is suitable for the analog or digital signal that television terminal is play, and sends on the television terminal and plays;
The external control input unit is connected with described control unit, is used for user's operation information is input to control unit, so that control unit converts the operation information of user's input to the information of uploading of described multimedia terminal input.
2, multimedia terminal according to claim 1 is characterized in that, also comprises:
The multimedia messages input interface is used to read the multimedia messages of multimedia messages input equipment input;
Coding unit, be connected with data processing unit with described multimedia messages input interface respectively, the multimedia messages that is used for the multimedia messages input interface is read carries out encoding process, and the multimedia messages after the encoding process is sent to data processing unit as the information of uploading of described multimedia terminal input carries out data processing.
3, multimedia terminal according to claim 2, it is characterized in that, described coding unit further is connected with data processing unit by described memory cell, the multimedia information storage of described coding unit after with encoding process be to memory cell, so that the multimedia messages that the follow-up data processing unit reads in the memory cell behind the coding of storage is again handled or play-overed by described multimedia terminal.
4, multimedia terminal according to claim 2, it is characterized in that, also comprise scrambler, described coding unit further is connected with data processing unit by this scrambler, described scrambler is used for handling carrying out scrambling through the multimedia messages after the coding unit encoding process, and the multimedia messages after scrambling handled sends to data processing unit as the input information of described multimedia terminal and carries out data processing.
5, multimedia terminal according to claim 1 is characterized in that, also comprises:
The cable TV network interface is connected with cable television network, is used to receive the radio-frequency (RF) digital TV signal that cable television network transmits;
Tuner is connected with described cable TV network interface, and the radio-frequency (RF) digital TV signal that is used for the cable TV network interface is sent is tuned to the intermediate frequency digital television signal;
Demodulator is connected with described tuner, and the intermediate frequency digital television signal that is used for tuner is sent is demodulated to the transport stream that mainly comprises digital audio and video signals, digital video signal; And
Demodulation multiplexer is connected with decoding unit with described demodulator respectively, is used for the transport stream that the transport stream sent at demodulator is extracted a program, and the transport stream that will extract program sends to decoding unit and carries out decode operation.
6, multimedia terminal according to claim 5, it is characterized in that, also comprise second descrambler, described demodulation multiplexer further is connected with decoding unit by this second descrambler, described second descrambler sends to decoding unit again and carries out decoding processing after being used for the scrambling transport stream that demodulation multiplexer extracts program carried out scramble process.
7, multimedia terminal according to claim 1 is characterized in that, described television terminal is digital TV terminal or simulated television terminal.
8, multimedia terminal according to claim 7 is characterized in that, described broadcast output unit further comprises:
Video dac is connected with television terminal with described decoding unit respectively, is used for converting the decoded digital video signal that decoding unit is sent to analog video signal, and sends to television terminal and play; With
Audio digital to analog converter is connected with the simulated television terminal with described decoding unit respectively, is used for converting the decoded digital audio and video signals that decoding unit is sent to simulated audio signal, and sends to the simulated television terminal and play.
9, multimedia terminal according to claim 1 is characterized in that, described external control input unit is Infrared remote controller or keyboard/mouse equipment.
10, multimedia terminal according to claim 1 is characterized in that, described memory cell is fixed memory medium and/or mobile memory medium.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100393331A CN1294755C (en) | 2004-01-19 | 2004-01-19 | Multimedia terminal |
| PCT/CN2004/001375 WO2005076617A1 (en) | 2004-01-19 | 2004-11-29 | Multimedia terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100393331A CN1294755C (en) | 2004-01-19 | 2004-01-19 | Multimedia terminal |
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| CN1558674A CN1558674A (en) | 2004-12-29 |
| CN1294755C true CN1294755C (en) | 2007-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100393331A Expired - Lifetime CN1294755C (en) | 2004-01-19 | 2004-01-19 | Multimedia terminal |
Country Status (2)
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| CN (1) | CN1294755C (en) |
| WO (1) | WO2005076617A1 (en) |
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| US8335239B2 (en) | 2005-03-31 | 2012-12-18 | At&T Intellectual Property I, L.P. | Methods, systems, and devices for bandwidth conservation |
| US8306033B2 (en) | 2005-03-31 | 2012-11-06 | At&T Intellectual Property I, L.P. | Methods, systems, and computer program products for providing traffic control services |
| US8104054B2 (en) | 2005-09-01 | 2012-01-24 | At&T Intellectual Property I, L.P. | Methods, systems, and devices for bandwidth conservation |
| US8701148B2 (en) * | 2005-09-01 | 2014-04-15 | At&T Intellectual Property I, L.P. | Methods, systems, and devices for bandwidth conservation |
| US8903407B2 (en) * | 2006-11-25 | 2014-12-02 | Qualcomm Incorporated | System and method for adaptable multimedia download resulting in efficient airlink usage |
| CN101237624B (en) * | 2007-02-01 | 2012-10-03 | 英华达（南京）科技有限公司 | Communication device with network multimedia playing function |
| WO2010072030A1 (en) * | 2008-12-25 | 2010-07-01 | 中兴通讯股份有限公司 | Mobile terminal multimedia broadcast driving interface and realizing method |
| CN101778252A (en) * | 2009-01-08 | 2010-07-14 | 华通科技有限公司 | Method and device for playing mobile multimedia |
| CN203775349U (en) * | 2014-01-23 | 2014-08-13 | 深圳国微技术有限公司 | Television signal receiving socket |
| CN110290394A (en) * | 2019-07-15 | 2019-09-27 | 宁波华数广电网络有限公司 | A kind of video on-demand system and method |
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- 2004-01-19 CN CNB2004100393331A patent/CN1294755C/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2001058145A2 (en) * | 2000-02-04 | 2001-08-09 | Koninklijke Philips Electronics N.V. | Adaptive tv program recommender |
| WO2001063916A1 (en) * | 2000-02-25 | 2001-08-30 | Interval Research Corporation | Method and system for selecting advertisements |
| CN1406064A (en) * | 2001-09-12 | 2003-03-26 | 先锋株式会社 | Scheme for providing video-audio information to user's terminals |
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| Publication number | Publication date |
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| CN1558674A (en) | 2004-12-29 |
| WO2005076617A1 (en) | 2005-08-18 |
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