WO2005076617A1 - Multimedia terminal - Google Patents

Multimedia terminal Download PDF

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Publication number
WO2005076617A1
WO2005076617A1 PCT/CN2004/001375 CN2004001375W WO2005076617A1 WO 2005076617 A1 WO2005076617 A1 WO 2005076617A1 CN 2004001375 W CN2004001375 W CN 2004001375W WO 2005076617 A1 WO2005076617 A1 WO 2005076617A1
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WO
WIPO (PCT)
Prior art keywords
unit
multimedia
information
data
data processing
Prior art date
Application number
PCT/CN2004/001375
Other languages
French (fr)
Chinese (zh)
Inventor
Dahai Zhai
Zhibo Wang
Yanhui Yang
Xiaohu Gao
Original Assignee
Datang Telecom Technology Co., Ltd Optical Communication Branch
Datang Microelectronics Technology Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Datang Telecom Technology Co., Ltd Optical Communication Branch, Datang Microelectronics Technology Co., Ltd. filed Critical Datang Telecom Technology Co., Ltd Optical Communication Branch
Publication of WO2005076617A1 publication Critical patent/WO2005076617A1/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing 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
    • H04N21/435Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
    • H04N21/4351Processing 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing 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
    • H04N21/433Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • H04N21/4331Caching operations, e.g. of an advertisement for later insertion during playback
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing 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
    • H04N21/442Monitoring 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
    • H04N21/44209Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60Network 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 
    • H04N21/63Control 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
    • H04N21/637Control signals issued by the client directed to the server or network components
    • H04N21/6375Control 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/16Analogue secrecy systems; Analogue subscription systems
    • H04N7/162Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
    • H04N7/163Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only

Definitions

  • the present invention relates to the field of multimedia technology, and in particular, to a multimedia terminal applied in the field of multimedia technology.
  • set-top-box (STB) products based on user-interactive video-on-demand (VOD) technology have gradually entered millions of households.
  • This type of set-top box device has changed the way users can only passively watch a limited number of fixed radio and television channels. It allows users to flexibly and conveniently choose to play multimedia resources on the network according to their needs, which is more suitable for the needs of home entertainment.
  • the application of the existing video-on-demand set-top box devices basically only stays in the small network range of the community level.
  • the server will store certain multimedia data resources to provide a limited number of users. Video on demand service.
  • the network In order to meet the user's video-on-demand requirements, the network must guarantee a stable data bandwidth for each online user. For example, when users request multimedia data in the MPEG2 format, the network must guarantee to provide 3 Mbps to 8 Mbps data traffic. Due to the small number of users in a cell-level network, as long as the server is configured properly, it can better meet the needs of users.
  • the network may not be able to guarantee that sufficient access bandwidth is allocated to each set-top box device, resulting in a set-top box that cannot be continuous.
  • users cannot watch continuous broadcast programs through the set-top box; it may even cause serious consequences such as the set-top box being disconnected, unable to access the network, and network paralysis.
  • the present invention provides a multimedia terminal with a storage function, so as to realize that in the case that the existing data communication network cannot completely guarantee the user's access bandwidth, it can download and store the multimedia information requested by the user in advance, so that subsequent non-real-time playback is performed. So that the user can watch the continuously playing programs.
  • the present invention provides a multimedia terminal for connecting a television terminal to a data communication network, including:
  • a network interface unit connected to the data communication network and configured to send and receive data information from the data communication network
  • a data processing unit connected to the network interface unit and configured to process various uploaded information input by the multimedia terminal into data information conforming to a corresponding protocol of the data communication network and send the data information to the data communication network through the network interface unit;
  • the data information received from the network interface unit is processed to separate multimedia information and control information;
  • a control unit which is respectively connected to the network interface unit, the data processing unit, and each subsequent unit, and is configured to receive control information sent by the data processing unit and control interaction between the units;
  • a storage unit connected to the data processing unit and configured to store multimedia information separated by the data processing unit
  • a decoding unit respectively connected to the data processing unit and the storage unit, and configured to decode and process multimedia information separated by the data processing unit or multimedia information stored in the storage unit;
  • a playback output unit which is respectively connected to the decoding unit and the television terminal, and is configured to convert the decoded multimedia information sent by the decoding unit into an analog or digital signal suitable for playing by the television terminal, and send it to the television terminal for playing;
  • An external control input unit connected to the control unit and configured to input user operation information to the control unit, so that the control unit converts the operation information input by the user into the multimedia Upload information entered by the mobile terminal.
  • the multimedia terminal further includes a first descrambler, and the data processing unit and the storage unit are further connected through the first descrambler and the decoding unit, and the first descrambler is configured to scramble the data processing unit.
  • the multimedia information or the scrambled multimedia information stored in the storage unit is descrambled.
  • the multimedia terminal further includes a smart card interface connected to the control unit for reading user information stored in the smart card, so that the control unit uses the read user information to perform corresponding arithmetic processing, and controls the first A descrambler performs descrambling processing on the scrambled multimedia information sent by the data processing unit or the scrambled multimedia information stored in the storage unit.
  • the multimedia terminal further includes:
  • the encoding unit is respectively connected to the multimedia information input interface and the data processing unit, and is configured to perform encoding processing on the multimedia information read by the multimedia information input interface, and use the encoded multimedia information as upload information input by the multimedia terminal. Send to the data processing unit for data processing.
  • the encoding unit is further connected to the data processing unit through the storage unit, and the encoding unit stores the encoded multimedia information in the storage unit, so that the subsequent data processing unit reads the stored encoding in the storage unit.
  • the multimedia information is processed or directly played by the multimedia terminal.
  • the multimedia terminal further includes a scrambler, and the encoding unit is further connected to the data processing unit through the scrambler, and the scrambler is configured to perform scrambling processing on multimedia information that has been encoded and processed by the encoding unit, and The scrambled multimedia information is sent as input information of the multimedia terminal to a data processing unit for data processing.
  • the multimedia terminal further includes:
  • Cable television network interface connected to the cable television network, and used to receive radio frequency digital television signals from the cable television network;
  • a tuner connected to the cable television network interface and configured to send RF digital TV signals are tuned to IF digital TV signals;
  • a demodulator connected to the tuner and configured to demodulate the intermediate frequency digital television signal sent from the tuner into a transport stream mainly including digital audio signals and digital video signals;
  • a demultiplexer which is respectively connected to the demodulator and the decoding unit, and is configured to extract a transport stream of a program from the transport stream sent from the demodulator, and send the extracted transport stream to the decoding unit for decoding operation .
  • the multimedia terminal further includes a second descrambler, and the demultiplexer is further connected to the decoding unit through the second descrambler, and the second descrambler is used for scrambled transmission for the demultiplexer to extract programs After the stream is descrambled, it is sent to the decoding unit for decoding.
  • the data processing unit further includes:
  • An authentication subunit connected to the network interface unit and configured to perform a legality authentication operation on the data information sent by the network interface unit;
  • a data separation subunit which is respectively connected to the authentication subunit and the decoding unit, and is configured to separate multimedia information and control information from the legal data information after the authentication subunit is authenticated;
  • a data sending subunit which is respectively connected to the control unit and the network interface unit, and is configured to process the uploaded information input by the multimedia terminal into data information conforming to a corresponding protocol of the data communication network, and then send the corresponding data communication through the network interface unit network.
  • the multimedia terminal provided by the present invention can download multimedia information in advance when the data communication network cannot guarantee that each user has sufficient access bandwidth to receive data information, so that the user cannot continuously watch multimedia programs, and download the multimedia information in advance.
  • the multimedia information is stored in the storage unit, so that the stored multimedia information can be read from the storage unit at a later time for non-real-time playback and viewing. Therefore, it can solve the problem that the data communication network cannot provide sufficient access bandwidth. Allows users to watch continuous program information.
  • the multimedia terminal of the present invention can descramble and watch the scrambled multimedia information by setting a first descrambler and a smart card interface, thereby improving the security of the multimedia information.
  • the multimedia terminal of the present invention further adds an authentication subunit to the data processing unit, which can Authenticate the data information sent by the data communication network, so as to ensure that users can only receive legal data information.
  • the multimedia terminal of the present invention is also provided with a multimedia information input interface and an encoding unit, which can encode and save multimedia information input by an external multimedia input device, so that subsequent multimedia terminals can directly decode and play the saved multimedia information for viewing or sending to data communication. network.
  • the multimedia terminal of the present invention can access the data communication network, and further adds a cable television network interface, a tuner, a demodulator and a demultiplexer, so that the television terminal can not only communicate with the data through the multimedia terminal of the present invention.
  • the communication network performs interactive communication and can simultaneously receive digital television signals from the cable television network.
  • FIG. 1 is a block diagram showing the structure and composition of a first embodiment of a multimedia terminal according to the present invention
  • FIG. 2 is a block diagram showing a structure of a second embodiment of a multimedia terminal according to the present invention.
  • Figure 3 is a block diagram showing the structure of a third embodiment of the multimedia terminal of the present invention.
  • Fig. 4 is a block diagram of the specific structural components inside the data processing unit in the multimedia terminal of the present invention
  • Fig. 5 is a diagram of the specific structural components inside the playback output unit of the multimedia terminal of the present invention
  • Fig. 6 is the multimedia terminal and the digital cable television network of the present invention.
  • FIG. 7 is a schematic diagram of a process of video communication between data terminals using a data communication network according to the present invention.
  • FIG. 1 is a block diagram of a first embodiment of a multimedia terminal according to the present invention.
  • the multimedia terminal in the figure mainly includes a network interface unit S1, a data processing unit S2, a first descrambler S3, a decoding unit S4, and a playback output unit S5.
  • the control unit S7, the storage unit S8, the smart card interface S9, and the external control input unit S10; the functions of each unit and its connection relationship are as follows:
  • the network interface unit S1 is connected to the data communication network and is used from the data communication network! ⁇ Data packet;
  • the data communication network described herein may be an Internet network, an IP metropolitan area network, or the like.
  • the network interface unit S1 corresponds to different data access modes, and different interface modules can be selected, such as an Ethernet card, an Asymmetric Digital Subscriber Line (ADSL) access card, and the like.
  • the network interface unit SI has a transmission rate from 512Kbps according to different access methods. To 10Mbps. Communication between a multimedia terminal and an external data communication network is a two-way interactive process.
  • the network interface unit S1 initiates a request to a server of the data communication network according to a user's operation control (such as downloading, video on demand, etc.); and receives data information sent by the server of the data communication network.
  • the data processing unit S2 is connected to the network interface unit S1 and is configured to process various input uploaded information of the multimedia terminal into data information conforming to a corresponding protocol of the data communication network, and then send the data information to the data communication network through the network interface unit S1.
  • the input information of the multimedia terminal includes operation information input by a user and multimedia information input by using a multimedia information input device such as a camera and a microphone;
  • the data processing unit S2 is also used to separate the multimedia information and the control information from the data information sent by the network interface unit S1.
  • the data information returned from the data communication network generally includes multimedia information and control information.
  • the multimedia information For the demand information requested by the user the separated multimedia information can be further sent to the subsequent first descrambler S3 or sent to the storage unit S4;
  • the control information mainly reflects the status of the data communication network, the server status, and whether the user operation is successful, etc.
  • the data information is separated from the control information and forwarded to the control unit S7.
  • the control unit S7 is respectively connected to the network interface unit S1, the data processing unit S2, and each subsequent unit, and is configured to receive the control information sent by the data processing unit S2 and control the interaction between the various units. At the same time, the control unit S7 must also Real-time control of subsequent descrambling processes.
  • the first descrambler S3 is connected to the data processing unit S2, and is configured to perform descrambling processing on the scrambled multimedia information separated by the data processing unit S2 under the control of the control unit S7. Since the multimedia information sent from the data communication network may be scrambled multimedia information after being scrambled, or may be unscrambled multimedia information without being scrambled, when the multimedia information separated by the data processing unit S2 is When the multimedia information is scrambled, the first descrambler S3 needs to perform descrambling processing, and when the multimedia information separated by the data processing unit S2 is unscrambled multimedia information, the first descrambler S3 does not need to perform descrambling. Processing; instead, the subsequent decoding processing is performed directly.
  • the storage unit S8 is connected to the data processing unit S2 and is used to store the multimedia information separated by the data processing unit S2. Because in some cases, it may be There are too many users of the on-demand server in the information network, and each user accesses the on-demand server in the data communication network. The bandwidth of the on-demand server is too narrow, so that users cannot continuously watch high-speed and dynamically changing multimedia programs.
  • the multimedia terminal of the present invention may further download and store the separated multimedia information into the storage unit S8 after the multimedia data received from the network interface unit S1 is separated and processed by the data processing unit S2, and then wait for the multimedia required by the user. After all the information is stored in the storage unit S8, subsequent operations are performed.
  • this storage unit S8 may be a mobile storage medium such as a mobile hard disk or a magnetic disk, Fixed storage media such as magnetic tape.
  • the decoding unit S4 is connected to the first descrambler S3 or directly connected to the storage unit S8, and is configured to decode the multimedia information descrambled by the first descrambler S3, or read the storage unit S8 to download the stored multimedia in advance Information is decoded; if the multimedia information is unscrambled multimedia information, the first descrambler S3 will not perform any processing on the multimedia information separated by the data processing unit S2 or the multimedia information stored by the storage unit S8, but directly Decoding processing is performed by the decoding unit S4;
  • the playback output unit S5 is respectively connected to the decoding unit S4 and the television terminal S6, and is configured to perform all or part of the digital-to-analog conversion processing on the decoded multimedia information sent by the decoding unit S4, so as to convert it into analog or digital video. After the audio signal is sent to the TV terminal for playback;
  • the external control input unit S1 Q is connected to the control unit S7.
  • the external control input unit S10 is mainly used to input the user's selection information or operation information to the control unit S7.
  • the external control input unit S10 may be a commonly used infrared remote control, or a keyboard / mouse device, etc.
  • the operation process is similar to the current TV program selection or computer information input process.
  • the smart card interface S9 is also connected to the control unit S7, and is used to read user information stored in the smart card (in general, in order to realize the viewing of scrambled multimedia information, the network side will request the user's on-demand programs according to the information of a user.
  • Multimedia information is scrambled, so in On the multimedia terminal side, the scrambled multimedia information can be descrambled by recording these user information in a smart card held by the user, so that the control unit S7 uses the read user information to perform corresponding calculation processing, and through the calculation
  • the processed data controls the first descrambler S 3 to perform descrambling processing on the scrambled multimedia information sent by the data processing unit S 2 .
  • this figure is a block diagram showing the structure and composition of a second embodiment of the multimedia terminal of the present invention.
  • a multimedia information input interface S13, a coding unit S12, and a scrambler S11 are further added, so that when the multimedia terminal can perform interactive communication with a data communication network, Furthermore, the multimedia information received by the multimedia terminal can be encoded into data information that complies with the corresponding protocol of the data communication network and sent to the data communication network, or can be stored for subsequent direct playback and viewing.
  • the functions of the newly added units are: multimedia The information input interface S 1 3 is used to read the multimedia information input by the multimedia information input device S14.
  • the multimedia information input device S14 can be an existing multimedia device such as a video camera, a camera, and a microphone.
  • the multimedia information input interface S13 is an external device.
  • a socket which can be connected to multimedia information input devices S14 such as cameras, cameras, and microphones, for reading in the multimedia information collected by these multimedia information input devices S14;
  • the encoding unit S12 is respectively connected to the multimedia information input interface S13 and the data processing unit S2, and is configured to encode the multimedia information read by the multimedia information input interface S13, and use the encoded multimedia information as the multimedia terminal input.
  • the uploaded information is sent to the data processing unit S 2 for data processing, and is processed into a data information format of a corresponding protocol, and then sent to the data communication network. Thereby, the interactive function of multimedia information between different multimedia terminals is realized.
  • the encoding unit S12 may further be connected to the data processing unit S2 through the scrambler S11, so that the multimedia information encoded by the encoding unit S12 is subjected to the scrambling processing of the scrambler S11 and then sent to the data processing.
  • the unit S2 performs data information conversion processing of the corresponding protocol and sends it to the data communication network.
  • the encoding unit S12 may also be connected to the storage unit S8 at the same time, so that the multimedia information encoded by the encoding unit S12 is directly stored in the storage unit S8 for direct playback and viewing at a later time.
  • the following is a process of a user using the multimedia terminal and a data communication network to perform two-way interactive communication.
  • FIG. 7 this figure is a schematic diagram of a process of video communication between multimedia terminals of the present invention using a data communication network. Specific processing The process is as follows,
  • the cameras 260 are respectively connected to the multimedia information input interface S 13 of the multimedia terminal 220;
  • the multimedia information input interface S13 sends the received multimedia information such as multimedia images and audio data to the coding unit S4;
  • the encoding unit S4 compresses and encodes multimedia information such as multimedia images and audio information in a fixed format (such as MPEG1, 2, 4 and other encoding formats), and sends the compressed multimedia information to the scrambler S11;
  • the scrambler S11 will perform a scrambling operation to generate the scrambled multimedia information and key information respectively, and then send them to the data processing unit S2; if the user does not require the Data information is protected, the scrambler S11 performs a no-operation, and directly sends the compressed multimedia information to the data processing unit S2;
  • the data processing unit S2 processes the received multimedia information, converts it into a data information format conforming to the corresponding communication protocol of the data communication network, and sends it to the network end through the network interface unit S1.
  • the network interface unit S1 of the receiving-end multimedia terminal receives the data information sent by the A-side user from the data communication network, and sends it to the data processing unit S2;
  • the data processing unit S2 separates the multimedia information in the data information and sends it to the first descrambler S3;
  • the first descrambler S3 first judges the received multimedia information, and if it is found that the multimedia information has been scrambled, it performs corresponding descrambling processing; if it is found that the multimedia information has not been scrambled, the first The descrambler S3 performs a null operation; the first descrambler S3 sends the processed multimedia information to the decoding unit S4;
  • the decoding unit S4 performs a decoding operation on the received multimedia information, and sends the generated digital audio and video information to the playback output unit S5;
  • the playback output unit S5 performs corresponding digital-to-analog conversion processing on the audio and video signals, Play it on a TV terminal.
  • FIG. 3 is a block diagram showing the structure and composition of a third embodiment of a multimedia terminal according to the present invention.
  • This embodiment is based on the first embodiment, and further adds a cable television network interface S15, a tuner S16, and a demodulator S17.
  • the demultiplexer S18 and the second descrambler S19 so as to realize that the multimedia terminal of the present invention can receive digital television signals sent from the cable television network on the basis of interactive communication with the data communication network, and each unit thereof
  • the specific functions are as follows:
  • the cable television network interface S15 is connected to the cable television network and used to receive radio frequency digital television signals from the cable television network.
  • the multimedia terminal of the present invention it is an external interface;
  • the tuner S16 is connected to the cable television network interface S15, and is configured to convert the radio frequency digital television signal sent from the cable television network interface into an intermediate frequency digital television signal;
  • the demodulator S17 is connected to the tuner S16 and is used for demodulating the intermediate frequency digital television signal sent from the tuner S16 into a transport stream mainly including digital audio signals and digital video signals;
  • the demultiplexer S18 is respectively connected to the demodulator S17 and the decoding unit S4, and is configured to extract a transport stream of a program from the transport stream sent from the demodulator S17, and send the transport stream of the extracted program to the decoding unit S4. Perform decoding operations;
  • the demultiplexer S18 can be further connected to the decoding unit S4 through the second descrambler S19, because the TV signal transmission stream sent by the cable television network is also divided into two types: scrambled transport stream and unscrambled transport stream.
  • the second scrambler S19 is used to descramble the received scrambled transport stream and then sent to the decoding unit S4 for decoding processing.
  • the television signal transport stream is scrambled, it is not necessary to use the second descrambler S19 to perform descrambling processing on the received unscrambled transport stream, but directly to the decoding unit S4 for decoding processing.
  • this figure is a simple block diagram of the network structure of the multimedia terminal, cable television network, and data communication network of the present invention.
  • the multimedia terminal 220 of the present invention can receive the broadcast television center 200 by accessing the cable television network 210 The distributed digital television program signal is further processed and sent to the television terminal S6 for playback.
  • the multimedia terminal of the present invention 220 can also access the data communication network 250, and then perform interactive communication with the multimedia server 240, and request some TV program information according to the user's request, and then the multimedia terminal 220 processes the on-demand TV program information in the TV terminal.
  • Play on S6. 4 this figure is a block diagram of the specific internal structure of the data processing unit in the multimedia terminal of the present invention.
  • the data processing unit S2 mainly includes: an authentication subunit S200, a data separation subunit S210 and a data sending subunit S220, and each subunit The specific role is as follows:
  • the data sending sub-unit S220 is connected to the network interface unit S1, the control unit S7, the encoding unit S12, and the storage unit S8 at the same time, and is used to correspondingly process the upload information input by the multimedia terminal generated by the control unit through the encoding unit S12 to the data communication network After the data format of the protocol is sent, it is sent to the corresponding data communication network through the network interface unit S1.
  • the unit S1 is sent to the corresponding data communication network; it is also used to perform protocol conversion processing on the upload information input by the external control input unit S10, and then send it to the corresponding data communication network through the network interface unit S1.
  • the authentication subunit S200 is connected to the network interface unit S1, the control unit S7, and the data separation subunit S210, respectively, and is configured to control the data sent from the data communication network received by the network interface unit S1 under the control of the control unit S7. Information for authentication analysis.
  • the specific authentication process is:
  • the authentication subunit S200 receives the data information sent by the network interface unit S1; 2.
  • the control unit S7 reads the authentication information in the smart card and sends it to the authentication subunit
  • the authentication subunit S200 performs an authentication operation on the data information received from the data communication network according to the authentication information provided by the smart card to determine the validity of the data information. If the data information is valid, the authentication subunit S200 sends the data information to the data separation subunit S210; if the data information is invalid, the authentication subunit S200 discards the data information and sends an error prompt message to the control unit S7.
  • the data separation subunit S210 is respectively connected to the authentication subunit S200 and the storage unit S8, or to the first descrambler S3, and is configured to classify and forward the data information returned by the data communication network.
  • the data information returned by the data communication network is generally composed of two parts: multimedia information and control information.
  • the multimedia information is data information required by the user. After distinguishing the multimedia information, the data separation sub-unit SO will forward the multimedia information to the first one according to whether the multimedia terminal is in a real-time on-demand or non-real-time downloading operation state.
  • the descrambler S3 performs descrambling operation or forwards it to the storage unit S8 for pre-downloading and storing.
  • the control information mainly reflects data information such as the network status, server status, and whether the user operation is successful. After the data separation module distinguishes the control information, it will It is forwarded to the control unit S7.
  • this figure is a block diagram of specific modules inside a playback output unit in a multimedia terminal according to the present invention.
  • the playback output unit S5 is under the control of the control unit S7, and is respectively connected to the audio interface of the decoding unit S4 and the television terminal and The video interface connection is used to perform digital-to-analog conversion processing on the digital audio and digital video information decoded by the decoding unit S4, so that it can be output to the audio interface and video interface of the analog television terminal or digital television terminal, respectively.
  • the output unit S5 further includes an audio digital-to-analog conversion sub-unit S50 and a video digital-to-analog conversion sub-unit S51.
  • the specific functions of each component are as follows:
  • the television terminal connected to the multimedia terminal of the present invention can be a common analog television terminal or a digital television terminal, and the analog Video and audio interfaces are provided on both the TV terminal and the digital TV terminal.
  • the playback output unit S5 needs to convert the digital audio signal into an analog audio signal that can be received by the analog TV terminal through the audio digital-to-analog conversion sub-unit S50 before sending it to the audio interface of the analog TV terminal for playback;
  • the video digital-to-analog conversion subunit S51 needs to be converted into an analog video signal that can be received by an analog television terminal before it can be sent to the video interface of the analog television terminal for playback, that is, the video digital-to-analog conversion subunit S51
  • the digital video signal is converted into a line and field scan analog signal for playback by an analog television terminal.
  • the playback output unit S5 can directly send digital audio signals to the audio interface of the digital TV terminal without having to go through the conversion processing of the audio digital-to-analog conversion sub-unit S50; when processing digital video signals, it also passes The digital-to-analog conversion process of the video digital-to-analog conversion subunit S51 converts digital video signals into line and field scan analog signals for digital television terminals to play.
  • the multimedia terminal of the present invention can also perform any combination of the embodiments on the basis of the above-mentioned embodiments to achieve different purposes.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Databases & Information Systems (AREA)
  • Computer Security & Cryptography (AREA)
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Abstract

The present invention relates to a multimedia terminal for connecting the TV terminal to the data communication network. It comprises a network interface unit, a data processing unit which is connected to the network interface unit, a control unit which is connected to the network interface unit, the data processor unit, and the following respective units, a storage unit which is connected to the data processing unit and is used for storing the multimedia information separated by the data processing unit, a decoder unit which is connected to the data processing unit and the storage unit, an display output unit which is connected to the decoder unit and the TV terminal, and an external control input unit which is connected to the control unit. The multimedia terminal of the invention is capable of previously downloading and storing the multimedia information demanded by the subscribers in the case that the existing data communication network can not entirely ensure the bands accessed by the subscribers, so as to perform a non-real time broadcasting, and enable the subscribers to view the programs continuously and uninterruptedly.

Description

多媒体终端  Multimedia terminal
技术领域 Technical field
本发明涉及多媒体技术领域, 特别涉及一种应用在多媒体技术领域 内的多媒体终端。  The present invention relates to the field of multimedia technology, and in particular, to a multimedia terminal applied in the field of multimedia technology.
背景技术 Background technique
随着现代网络技术和多媒体通信技术的不断发展, 基于用户交互式 视频点播 ( VOD )技术的机顶盒(STB, Set-Top-Box )类产品开始逐渐 地走进千家万户。 该类机顶盒设备改变了以往用户只能被动收看有限个 固定广播电视频道的接收方式, 使用户能够根据自己的需求, 灵活方便 地选择播放网络上的多媒体资源, 因而更适合家庭娱乐生活的需要。 现有视频点播类机顶盒设备的应用, 基本上还只是停留在小区级的较小 的网络范围内,在该类网络中, 服务器上会存储一定的多媒体数据资源, 用来向数量有限的用户提供视频点播服务。 为满足用户的视频点播需求, 网络必须保证为每个在线用户提供稳定的数据带宽。 例如, 当用户点播 MPEG2格式的多媒体数据时, 网络必须保证提供 3Mbps ~ 8Mbps的数据 流量。 小区级网络由于用户量较小, 只要服务器配置合适, 就能够较好 地满足用户的需求。  With the continuous development of modern network technology and multimedia communication technology, set-top-box (STB) products based on user-interactive video-on-demand (VOD) technology have gradually entered millions of households. This type of set-top box device has changed the way users can only passively watch a limited number of fixed radio and television channels. It allows users to flexibly and conveniently choose to play multimedia resources on the network according to their needs, which is more suitable for the needs of home entertainment. The application of the existing video-on-demand set-top box devices basically only stays in the small network range of the community level. In this type of network, the server will store certain multimedia data resources to provide a limited number of users. Video on demand service. In order to meet the user's video-on-demand requirements, the network must guarantee a stable data bandwidth for each online user. For example, when users request multimedia data in the MPEG2 format, the network must guarantee to provide 3 Mbps to 8 Mbps data traffic. Due to the small number of users in a cell-level network, as long as the server is configured properly, it can better meet the needs of users.
但是, 在将视频点播服务进一步推广到范围较大的城域级网络时, 由于用户数量的急剧增加, 可能会引起网络无法保证为每个机顶盒设备 分配足够的接入带宽, 从而导致机顶盒不能连续接收多媒体信息, 使用 户不能通过机顶盒收看到连续播放的节目; 甚至会导致机顶盒掉线、 无 法接入网络和网络瘫痪等严重后果。  However, when the video-on-demand service is further extended to a large-scale metropolitan area network, due to the sharp increase in the number of users, the network may not be able to guarantee that sufficient access bandwidth is allocated to each set-top box device, resulting in a set-top box that cannot be continuous. When receiving multimedia information, users cannot watch continuous broadcast programs through the set-top box; it may even cause serious consequences such as the set-top box being disconnected, unable to access the network, and network paralysis.
同时, 由于数据通信网络互联、 开放的特点, 会使得网络上流通数 据的安全性、 合法性很难得到保障。 通过网络散布非法言论, 以及通过 网络盗版等违法行为在现在的互联网络上也是屡屡出现。 因此, 在将电 视通过机顶盒设备连接到数据通信网络时, 如何灵活有效地对用户身份 的合法性进行验证, 并防止非法的网络端设备向用户发送非法媒体信息, 以及对网络上交互的多媒体数据资源进行有效地知识版权保护等, 都是 交互式视频点播业务在推广过程中急需解决的问题。 At the same time, due to the interconnected and open nature of data communication networks, it will be difficult to guarantee the security and legality of data circulating on the network. Dissemination of illegal speech through the Internet and illegal acts such as piracy through the Internet have also repeatedly appeared on the current Internet. Therefore, when connecting a TV to a data communication network through a set-top box device, how to flexibly and effectively verify the legitimacy of a user ’s identity and prevent an illegal network-side device from sending illegal media information to the user, And effective knowledge copyright protection of multimedia data resources interactive on the network, etc., are all problems that need to be solved urgently in the promotion process of interactive video on demand services.
发明内容 Summary of the invention
本发明提出一种具有存储功能的多媒体终端, 以实现在现有数据通 信网无法完全保证用户接入带宽的情况下, 能够进行预先下载存储用户 点播的多媒体信息, 以使后续进行非实时播放, 从而使用户收看到连续 播放的节目。  The present invention provides a multimedia terminal with a storage function, so as to realize that in the case that the existing data communication network cannot completely guarantee the user's access bandwidth, it can download and store the multimedia information requested by the user in advance, so that subsequent non-real-time playback is performed. So that the user can watch the continuously playing programs.
为解决上述问题, 本发明提出了一种多媒体终端, 用于使电视终端 连接到数据通信网, 包括:  To solve the above problems, the present invention provides a multimedia terminal for connecting a television terminal to a data communication network, including:
网络接口单元, 与所述数据通信网连接, 用于从数据通信网收发数据信 息; A network interface unit connected to the data communication network and configured to send and receive data information from the data communication network;
数据处理单元, 与所述网络接口单元连接, 用于把所述多媒体终端 输入的各种上传信息处理成符合数据通信网相应协议的数据信息后通过 网络接口单元发送到数据通信网; 同时用于从网络接口单元接收来的数 据信息进行分离多媒体信息和控制信息的处理;  A data processing unit connected to the network interface unit and configured to process various uploaded information input by the multimedia terminal into data information conforming to a corresponding protocol of the data communication network and send the data information to the data communication network through the network interface unit; The data information received from the network interface unit is processed to separate multimedia information and control information;
控制单元, 分别与所述网络接口单元、 数据处理单元和后续每个单 元连接, 用于接收数据处理单元发来的控制信息并控制各个单元之间的 交互工作;  A control unit, which is respectively connected to the network interface unit, the data processing unit, and each subsequent unit, and is configured to receive control information sent by the data processing unit and control interaction between the units;
存储单元, 与所述数据处理单元连接, 用于存储数据处理单元分离 出的多媒体信息;  A storage unit connected to the data processing unit and configured to store multimedia information separated by the data processing unit;
解码单元, 分别与所述数据处理单元和存储单元连接, 用于对数据 处理单元分离出的多媒体信息或存储单元存储的多媒体信息进行解码处 理;  A decoding unit, respectively connected to the data processing unit and the storage unit, and configured to decode and process multimedia information separated by the data processing unit or multimedia information stored in the storage unit;
播放输出单元, 分别与所述解码单元和电视终端连接, 用于将解码 单元发来的解码处理后的多媒体信息转换成适合于电视终端播放的模拟 或数字信号, 发送到电视终端上进行播放;  A playback output unit, which is respectively connected to the decoding unit and the television terminal, and is configured to convert the decoded multimedia information sent by the decoding unit into an analog or digital signal suitable for playing by the television terminal, and send it to the television terminal for playing;
外部控制输入单元, 与所述控制单元连接, 用于将用户的操作信息 输入到控制单元, 以使控制单元将用户输入的操作信息转换成所述多媒 体终端输入的上传信息。 An external control input unit connected to the control unit and configured to input user operation information to the control unit, so that the control unit converts the operation information input by the user into the multimedia Upload information entered by the mobile terminal.
所述多媒体终端还包括第一解扰器, 所述数据处理单元和存储单元 进一步通过该第一解扰器和解码单元连接, 所述第一解扰器用于对数据 处理单元分离出的加扰多媒体信息或存储单元存储的加扰多媒体信息进 行解扰处理。  The multimedia terminal further includes a first descrambler, and the data processing unit and the storage unit are further connected through the first descrambler and the decoding unit, and the first descrambler is configured to scramble the data processing unit. The multimedia information or the scrambled multimedia information stored in the storage unit is descrambled.
所述多媒体终端还包括连接到所述控制单元的智能卡接口, 用于读 取智能卡中存储的用户信息, 以使控制单元利用读取的用户信息进行相 应运算处理, 并通过运算处理后数据控制第一解扰器对数据处理单元发 来的加扰多媒体信息或存储单元存储的加扰多媒体信息进行解扰处理。  The multimedia terminal further includes a smart card interface connected to the control unit for reading user information stored in the smart card, so that the control unit uses the read user information to perform corresponding arithmetic processing, and controls the first A descrambler performs descrambling processing on the scrambled multimedia information sent by the data processing unit or the scrambled multimedia information stored in the storage unit.
所述多媒体终端还包括:  The multimedia terminal further includes:
多媒体信息输入接口, 用于读取多媒体信息输入设备输入的多媒体 信息;  A multimedia information input interface for reading multimedia information input by a multimedia information input device;
编码单元, 分别与所述多媒体信息输入接口和数据处理单元连接, 用于对多媒体信息输入接口读取的多媒体信息进行编码处理, 并将编码 处理后的多媒体信息作为所述多媒体终端输入的上传信息发送给数据处 理单元进行数据处理。  The encoding unit is respectively connected to the multimedia information input interface and the data processing unit, and is configured to perform encoding processing on the multimedia information read by the multimedia information input interface, and use the encoded multimedia information as upload information input by the multimedia terminal. Send to the data processing unit for data processing.
其中所述编码单元进一步通过所述存储单元和数据处理单元连接, 所述编码单元将编码处理后的多媒体信息存储到存储单元, 以使后续数 据处理单元再到存储单元中读取存储的编码后的多媒体信息进行处理或 由所述多媒体终端进行直接播放。  The encoding unit is further connected to the data processing unit through the storage unit, and the encoding unit stores the encoded multimedia information in the storage unit, so that the subsequent data processing unit reads the stored encoding in the storage unit. The multimedia information is processed or directly played by the multimedia terminal.
所述多媒体终端还包括加扰器, 所述编码单元进一步通过该加扰器 和数据处理单元连接, 所述加扰器用于对经过编码单元编码处理后的多 媒体信息进行加扰处理, 并将加扰处理后的多媒体信息作为所述多媒体 终端的输入信息发送给数据处理单元进行数据处理。  The multimedia terminal further includes a scrambler, and the encoding unit is further connected to the data processing unit through the scrambler, and the scrambler is configured to perform scrambling processing on multimedia information that has been encoded and processed by the encoding unit, and The scrambled multimedia information is sent as input information of the multimedia terminal to a data processing unit for data processing.
所述多媒体终端还包括:  The multimedia terminal further includes:
有线电视网接口, 与有线电视网连接, 用于接收有线电视网传来的 射频数字电视信号;  Cable television network interface, connected to the cable television network, and used to receive radio frequency digital television signals from the cable television network;
调谐器, 与所述有线电视网接口连接, 用于将有线电视网接口发来的 射频数字电视信号调谐成中频数字电视信号; A tuner connected to the cable television network interface and configured to send RF digital TV signals are tuned to IF digital TV signals;
解调器, 与所述调谐器连接, 用于将调谐器发来的中频数字电视信 号解调成主要包含数字音频信号、 数字视频信号的传输流; 及  A demodulator connected to the tuner and configured to demodulate the intermediate frequency digital television signal sent from the tuner into a transport stream mainly including digital audio signals and digital video signals; and
解复用器,分别与所述解调器和解码单元连接, 用于在解调器发来的 传输流中提取一个节目的传输流,并将提取节目的传输流发送给解码单元 进行解码操作。  A demultiplexer, which is respectively connected to the demodulator and the decoding unit, and is configured to extract a transport stream of a program from the transport stream sent from the demodulator, and send the extracted transport stream to the decoding unit for decoding operation .
所述多媒体终端还包括第二解扰器,所述解复用器进一步通过该第二 解扰器和解码单元连接,所述第二解扰器用于对解复用器提取节目的加扰 传输流进行解扰处理后 , 再发送给解码单元进行解码处理。  The multimedia terminal further includes a second descrambler, and the demultiplexer is further connected to the decoding unit through the second descrambler, and the second descrambler is used for scrambled transmission for the demultiplexer to extract programs After the stream is descrambled, it is sent to the decoding unit for decoding.
其中所述数据处理单元进一步包括:  The data processing unit further includes:
鉴权子单元, 与所述网络接口单元连接, 用于对网络接口单元发来 的数据信息进行合法性鉴权操作;  An authentication subunit connected to the network interface unit and configured to perform a legality authentication operation on the data information sent by the network interface unit;
数据分离子单元, 分别与所述鉴权子单元和解码单元连接, 用于对 经过鉴权子单元鉴权处理后的合法数据信息进行分离多媒体信息和控制 信息的操作; 和  A data separation subunit, which is respectively connected to the authentication subunit and the decoding unit, and is configured to separate multimedia information and control information from the legal data information after the authentication subunit is authenticated; and
数据发送子单元, 分别与所述控制单元和网络接口单元连接, 用于 将所述多媒体终端输入的上传信息处理成符合数据通信网相应协议的数 据信息后通过网络接口单元发送到相应的数据通信网。  A data sending subunit, which is respectively connected to the control unit and the network interface unit, and is configured to process the uploaded information input by the multimedia terminal into data information conforming to a corresponding protocol of the data communication network, and then send the corresponding data communication through the network interface unit network.
本发明能够达到以下有益效果:  The invention can achieve the following beneficial effects:
本发明多媒体终端通过设置的存储单元,可以在数据通信网无法保证 每个用户有足够接入带宽进行接收数据信息,从而导致用户不能够连续收 看多媒体节目时, 能够预先下载多媒体信息, 并将下载的多媒体信息存储 到存储单元中, 以使后续时间再从存储单元读取出存储的多媒体信息,进 行非实时播放收看,因此解决了在数据通信网不能提供足够接入带宽的条 件下, 也能使用户收看到连续播放的节目信息。  The multimedia terminal provided by the present invention can download multimedia information in advance when the data communication network cannot guarantee that each user has sufficient access bandwidth to receive data information, so that the user cannot continuously watch multimedia programs, and download the multimedia information in advance. The multimedia information is stored in the storage unit, so that the stored multimedia information can be read from the storage unit at a later time for non-real-time playback and viewing. Therefore, it can solve the problem that the data communication network cannot provide sufficient access bandwidth. Allows users to watch continuous program information.
本发明多媒体终端通过设置第一解扰器和智能卡接口,能够对加扰的 多媒体信息进行解扰收看, 从而提高了多媒体信息的安全性。  The multimedia terminal of the present invention can descramble and watch the scrambled multimedia information by setting a first descrambler and a smart card interface, thereby improving the security of the multimedia information.
本发明多媒体终端在数据处理单元中又进而增加有鉴权子单元,能够 对数据通信网发来的数据信息进行鉴权处理,从而能够保证用户只能接收 到合法的数据信息。 The multimedia terminal of the present invention further adds an authentication subunit to the data processing unit, which can Authenticate the data information sent by the data communication network, so as to ensure that users can only receive legal data information.
本发明多媒体终端还同时设置有多媒体信息输入接口和编码单元,能 够对外部多媒体输入设备输入的多媒体信息进行编码、保存, 以被后续多 媒体终端直接将保存的多媒体信息解码播放收看或发送到数据通信网。  The multimedia terminal of the present invention is also provided with a multimedia information input interface and an encoding unit, which can encode and save multimedia information input by an external multimedia input device, so that subsequent multimedia terminals can directly decode and play the saved multimedia information for viewing or sending to data communication. network.
本发明多媒体终端在现有能够接入数据通信网的基础上, 又进而增 加有线电视网接口、 调谐器、 解调器和解复用器, 从而使电视终端通过 本发明多媒体终端, 不但能够和数据通信网进行交互式通信, 而且同时 能够接收有线电视网的数字电视信号。  The multimedia terminal of the present invention can access the data communication network, and further adds a cable television network interface, a tuner, a demodulator and a demultiplexer, so that the television terminal can not only communicate with the data through the multimedia terminal of the present invention. The communication network performs interactive communication and can simultaneously receive digital television signals from the cable television network.
附图说明 BRIEF DESCRIPTION OF THE DRAWINGS
图 1是本发明多媒体终端第一实施例结构组成框图;  FIG. 1 is a block diagram showing the structure and composition of a first embodiment of a multimedia terminal according to the present invention;
图 2是本发明多媒体终端第二实施例结构组成框图;  FIG. 2 is a block diagram showing a structure of a second embodiment of a multimedia terminal according to the present invention; FIG.
图 3是本发明多媒体终端第三实施例结构组成框图;  Figure 3 is a block diagram showing the structure of a third embodiment of the multimedia terminal of the present invention;
图 4是本发明多媒体终端中数据处理单元内部的具体结构组成框图; 图 5是本发明多媒体终端中播放输出单元内部的具体结构组成图; 图 6 是本发明多媒体终端和数字有线电视网、 数据通信网组成的简 单网络结构框图;  Fig. 4 is a block diagram of the specific structural components inside the data processing unit in the multimedia terminal of the present invention; Fig. 5 is a diagram of the specific structural components inside the playback output unit of the multimedia terminal of the present invention; Fig. 6 is the multimedia terminal and the digital cable television network of the present invention. A block diagram of a simple network structure composed of a communication network;
图 7 是本发明多媒体终端之间利用数据通信网进行视频通信的处理 过程示意图。  FIG. 7 is a schematic diagram of a process of video communication between data terminals using a data communication network according to the present invention.
具体实施方式 detailed description
参照图 1 , 该图是本发明多媒体终端第一实施例组成框图; 图中多媒 体终端主要包括网络接口单元 S1 , 数据处理单元 S2, 第一解扰器 S3, 解 码单元 S4 , 播放输出单元 S5 , 控制单元 S7 , 存储单元 S8, 智能卡接口 S9和外部控制输入单元 S10; 其中各个单元的作用及其连接关系如下: 网络接口单元 S1 , 与所述数据通信网连接, 用于从数据通信网! ^数据 包; 其中所述的数据通信网可以为 Internet网, IP城域网等。 网络接口 单元 S1相应于不同的数据接入方式, 可以选用不同的接口模块, 如以太 网卡、 非对称数字用户线(ADSL, Asymmetric Digi tal Subscr iber Line ) 接入卡等。网絡接口单元 SI根据不同的接入方式,其传输速率从 512Kbps 到 10Mbps。 多媒体终端与外部数据通信网进行通信是一种双向交互式的 过程。 所述网络接口单元 S1根据用户的操作控制(如下载、视频点播等) 向数据通信网的服务器发起请求; 并接收数据通信网的服务器发来的数 据信息。 1, this figure is a block diagram of a first embodiment of a multimedia terminal according to the present invention. The multimedia terminal in the figure mainly includes a network interface unit S1, a data processing unit S2, a first descrambler S3, a decoding unit S4, and a playback output unit S5. The control unit S7, the storage unit S8, the smart card interface S9, and the external control input unit S10; the functions of each unit and its connection relationship are as follows: The network interface unit S1 is connected to the data communication network and is used from the data communication network! ^ Data packet; The data communication network described herein may be an Internet network, an IP metropolitan area network, or the like. The network interface unit S1 corresponds to different data access modes, and different interface modules can be selected, such as an Ethernet card, an Asymmetric Digital Subscriber Line (ADSL) access card, and the like. The network interface unit SI has a transmission rate from 512Kbps according to different access methods. To 10Mbps. Communication between a multimedia terminal and an external data communication network is a two-way interactive process. The network interface unit S1 initiates a request to a server of the data communication network according to a user's operation control (such as downloading, video on demand, etc.); and receives data information sent by the server of the data communication network.
数据处理单元 S2 , 与网络接口单元 S1连接, 用于把多媒体终端的各 种输入的上传信息处理成符合数据通信网相应协议的数据信息后, 通过 网络接口单元 S1发送到数据通信网。 其中多媒体终端的输入信息包括用 户输入的操作信息和利用摄像机、 麦克风等多媒体信息输入设备输入的 多媒体信息等;  The data processing unit S2 is connected to the network interface unit S1 and is configured to process various input uploaded information of the multimedia terminal into data information conforming to a corresponding protocol of the data communication network, and then send the data information to the data communication network through the network interface unit S1. The input information of the multimedia terminal includes operation information input by a user and multimedia information input by using a multimedia information input device such as a camera and a microphone;
同时数据处理单元 S2还用于对网络接口单元 S1发来的数据信息进 行分离多媒体信息和控制信息的处理; 其中从数据通信网反馈回的数据 信息一般包括多媒体信息和控制信息等, 其中多媒体信息为用户点播的 需求信息, 分离出的多媒体信息可以进一步发送到后续的第一解扰器 S3 或发送到存储单元 S4中; 控制信息主要是反映数据通信网状态, 服务器 状态和用户操作是否成功等数据信息, 其中分离出控制信息后会转发到 控制单元 S7。  At the same time, the data processing unit S2 is also used to separate the multimedia information and the control information from the data information sent by the network interface unit S1. The data information returned from the data communication network generally includes multimedia information and control information. Among them, the multimedia information For the demand information requested by the user, the separated multimedia information can be further sent to the subsequent first descrambler S3 or sent to the storage unit S4; the control information mainly reflects the status of the data communication network, the server status, and whether the user operation is successful, etc. The data information is separated from the control information and forwarded to the control unit S7.
控制单元 S7 , 分别与网络接口单元 Sl、 数据处理单元 S2和后续每 个单元连接, 用于接收数据处理单元 S2发来的控制信息并控制各个单元 之间的交互工作;同时控制单元 S7还要对后续的解扰过程进行实时控制。  The control unit S7 is respectively connected to the network interface unit S1, the data processing unit S2, and each subsequent unit, and is configured to receive the control information sent by the data processing unit S2 and control the interaction between the various units. At the same time, the control unit S7 must also Real-time control of subsequent descrambling processes.
第一解扰器 S3, 与数据处理单元 S2连接, 用于在控制单元 S7的控 制下, 对数据处理单元 S2分离出的加扰多媒体信息进行解扰处理。 由于 从数据通信网发来的多媒体信息可以为经过加扰处理后的加扰多媒体信 息, 也可以为未经过加扰处理的未加扰多媒体信息, 当数据处理单元 S2 分离出的多媒体信息为加扰多媒体信息时, 就需要由第一解扰器 S3进行 解扰处理, 而当数据处理单元 S2分离出的多媒体信息为未加扰多媒体信 息时, 就不必由第一解扰器 S3进行解扰处理; 而是直接进行后续的解码 处理。  The first descrambler S3 is connected to the data processing unit S2, and is configured to perform descrambling processing on the scrambled multimedia information separated by the data processing unit S2 under the control of the control unit S7. Since the multimedia information sent from the data communication network may be scrambled multimedia information after being scrambled, or may be unscrambled multimedia information without being scrambled, when the multimedia information separated by the data processing unit S2 is When the multimedia information is scrambled, the first descrambler S3 needs to perform descrambling processing, and when the multimedia information separated by the data processing unit S2 is unscrambled multimedia information, the first descrambler S3 does not need to perform descrambling. Processing; instead, the subsequent decoding processing is performed directly.
存储单元 S8, 与数据处理单元 S2连接, 用于存储数据处理单元 S2 分离出的多媒体信息, 由于在有些情况下, 可能会因为同时访问数据通 信网中点播服务器的用户数量过多, 而使得每个用户接入数据通信网中 点播服务器的接入带宽过窄, 从而导致用户不能连续收看高速动态变化 的多媒体节目, 则在这种情况下, 本发明多媒体终端可以进而通过从网 络接口单元 S1接收到的多媒体数据经过数据处理单元 S2的分离处理后, 将分离出的多媒体信息先下载存储到该存储单元 S8中, 然后等到用户需 要的多媒体信息全部存储到存储单元 S8后, 再进行后续的操作。 如果存 储的多媒体信息为加扰多媒体信息, 则将存储单元 S8存储的多媒、体信息 发送到第一解扰器 S3中进行解扰处理, 而在数据通信网发来的多媒体信 息没有经过加扰的情况下,则不需要发送给第一解扰器 S3进行解扰处理, 而是直接发送给解码单元 S4直接进行解码处理; 如这个存储单元 S8可 以为移动硬盘等移动存储介质或磁盘、 磁带等固定存储介质。 The storage unit S8 is connected to the data processing unit S2 and is used to store the multimedia information separated by the data processing unit S2. Because in some cases, it may be There are too many users of the on-demand server in the information network, and each user accesses the on-demand server in the data communication network. The bandwidth of the on-demand server is too narrow, so that users cannot continuously watch high-speed and dynamically changing multimedia programs. In this case, The multimedia terminal of the present invention may further download and store the separated multimedia information into the storage unit S8 after the multimedia data received from the network interface unit S1 is separated and processed by the data processing unit S2, and then wait for the multimedia required by the user. After all the information is stored in the storage unit S8, subsequent operations are performed. If the stored multimedia information is scrambled multimedia information, the multimedia and body information stored in the storage unit S8 is sent to the first descrambler S3 for descrambling processing, and the multimedia information sent by the data communication network has not been scrambled. In the case of interference, it does not need to be sent to the first descrambler S3 for descrambling processing, but is directly sent to the decoding unit S4 for direct decoding processing. For example, this storage unit S8 may be a mobile storage medium such as a mobile hard disk or a magnetic disk, Fixed storage media such as magnetic tape.
解码单元 S4, 与第一解扰器 S3连接或直接和存储单元 S8连接, 用 于对第一解扰器 S3解扰后的多媒体信息进行解码处理, 或读取存储单元 S8预先下载存储的多媒体信息进行解码处理; 如果多媒体信息为未加扰 多媒体信息时, 第一解扰器 S3就不会对数据处理单元 S2分离出的多媒 体信息或存储单元 S8存储的多媒体信息进行任何处理, 而是直接由解码 单元 S4进行解码处理;  The decoding unit S4 is connected to the first descrambler S3 or directly connected to the storage unit S8, and is configured to decode the multimedia information descrambled by the first descrambler S3, or read the storage unit S8 to download the stored multimedia in advance Information is decoded; if the multimedia information is unscrambled multimedia information, the first descrambler S3 will not perform any processing on the multimedia information separated by the data processing unit S2 or the multimedia information stored by the storage unit S8, but directly Decoding processing is performed by the decoding unit S4;
播放输出单元 S5 , 分别与所述解码单元 S4和电视终端 S6连接, 用 于对解码单元 S4发来的解码处理后的多媒体信息进行全部或部分数模转 换处理, 使之转换成模拟或数字视音频信号后, 发送到电视终端上进行 播放;  The playback output unit S5 is respectively connected to the decoding unit S4 and the television terminal S6, and is configured to perform all or part of the digital-to-analog conversion processing on the decoded multimedia information sent by the decoding unit S4, so as to convert it into analog or digital video. After the audio signal is sent to the TV terminal for playback;
外部控制输入单元 S1 Q,与控制单元 S7连接。外部控制输入单元 S10 主要作用是将用户对节目的选取信息或操作信息输入到控制单元 S7。 其 中该外部控制输入单元 S10可以为常用的红外遥控器, 也可以为键盘 /鼠 标设备等, 其操作过程类似于现在电视节目的选取或计算机信息的输入 过程。  The external control input unit S1 Q is connected to the control unit S7. The external control input unit S10 is mainly used to input the user's selection information or operation information to the control unit S7. The external control input unit S10 may be a commonly used infrared remote control, or a keyboard / mouse device, etc. The operation process is similar to the current TV program selection or computer information input process.
智能卡接口 S9 , 也连接在控制单元 S7上, 用于读取智能卡中存储的 用户信息 (一般情况下, 为实现对加扰多媒体信息的收看, 网络侧会根 据一个用户的信息对用户点播节目的多媒体信息进行加扰处理, 所以在 多媒体终端侧, 通过在用户手持的智能卡中记录这些用户信息, 从而可 以实现对加扰多媒体信息进行解扰的处理), 以使控制单元 S7 利用读取 的用户信息进行相应运算处理, 并通过运算处理后数据控制第一解扰器 S 3 , 对数据处理单元 S2发来的加扰多媒体信息进行解扰处理。 The smart card interface S9 is also connected to the control unit S7, and is used to read user information stored in the smart card (in general, in order to realize the viewing of scrambled multimedia information, the network side will request the user's on-demand programs according to the information of a user. Multimedia information is scrambled, so in On the multimedia terminal side, the scrambled multimedia information can be descrambled by recording these user information in a smart card held by the user, so that the control unit S7 uses the read user information to perform corresponding calculation processing, and through the calculation The processed data controls the first descrambler S 3 to perform descrambling processing on the scrambled multimedia information sent by the data processing unit S 2 .
参照图 2 , 该图是本发明多媒体终端第二实施例结构组成框图。 该实 施例在上述第一实施例的基础上, 又进而增加有多媒体信息输入接口 S13 , 编码单元 S12和加扰器 S11 , 以实现在该多媒体终端能够和数据通 信网进行交互式通信时, 又进而可以实现将该多媒体终端接收到的多媒 体信息编码成符合数据通信网相应协议的数据信息发送给数据通信网, 或者可以进而存储以备后续直接播放收看, 其中新增各个单元的作用是: 多媒体信息输入接口 S 1 3,用于读取多媒体信息输入设备 S14输入的 多媒体信息; 其中多媒体信息输入设备 S14 可以为现有的摄像机、 摄像 头和麦克风等多媒体设备, 其中多媒体信息输入接口 S13 就是一个外接 插口, 该插口可以外接这些摄像机、 摄像头和麦克风等多媒体信息输入 设备 S14 ,用于将这些多媒体信息输入设备 S 14采集的多媒体信息读入进 来;  Referring to FIG. 2, this figure is a block diagram showing the structure and composition of a second embodiment of the multimedia terminal of the present invention. In this embodiment, on the basis of the above-mentioned first embodiment, a multimedia information input interface S13, a coding unit S12, and a scrambler S11 are further added, so that when the multimedia terminal can perform interactive communication with a data communication network, Furthermore, the multimedia information received by the multimedia terminal can be encoded into data information that complies with the corresponding protocol of the data communication network and sent to the data communication network, or can be stored for subsequent direct playback and viewing. The functions of the newly added units are: multimedia The information input interface S 1 3 is used to read the multimedia information input by the multimedia information input device S14. The multimedia information input device S14 can be an existing multimedia device such as a video camera, a camera, and a microphone. The multimedia information input interface S13 is an external device. A socket, which can be connected to multimedia information input devices S14 such as cameras, cameras, and microphones, for reading in the multimedia information collected by these multimedia information input devices S14;
编码单元 S12 ,分别与所述多媒体信息输入接口 S13和数据处理单元 S2连接, 用于对多媒体信息输入接口 S13读取的多媒体信息进行编码处 理, 并将编码处理后的多媒体信息作为上述多媒体终端输入的上传信息 发送给数据处理单元 S 2进行数据处理, 以处理成相应协议的数据信息格 式再发送给数据通信网。 从而实现不同多媒体终端之间的多媒体信息的 交互功能。  The encoding unit S12 is respectively connected to the multimedia information input interface S13 and the data processing unit S2, and is configured to encode the multimedia information read by the multimedia information input interface S13, and use the encoded multimedia information as the multimedia terminal input. The uploaded information is sent to the data processing unit S 2 for data processing, and is processed into a data information format of a corresponding protocol, and then sent to the data communication network. Thereby, the interactive function of multimedia information between different multimedia terminals is realized.
当然, 编码单元 S12还可以进一步通过加扰器 S11和数据处理单元 S2连接, 以使经过编码单元 S12编码处理后的多媒体信息再经过该加扰 器 S11的加扰处理后, 再发送给数据处理单元 S2进行相应协议的数据信 息转换处理后发送给数据通信网。  Of course, the encoding unit S12 may further be connected to the data processing unit S2 through the scrambler S11, so that the multimedia information encoded by the encoding unit S12 is subjected to the scrambling processing of the scrambler S11 and then sent to the data processing. The unit S2 performs data information conversion processing of the corresponding protocol and sends it to the data communication network.
编码单元 S12也可以同时和存储单元 S8连接,以使经过编码单元 S12 编码处理后的多媒体信息直接存储在存储单元 S8中, 以在后续时间进行 直接播放收看。 下面举一个用户使用该多媒体终端和数据通信网进行枧频通信的双 向交互的处理过程, 参照图 7, 该图是本发明多媒体终端之间利用数据通 信网进行视频通信的处理过程示意图: 具体处理过程如下, The encoding unit S12 may also be connected to the storage unit S8 at the same time, so that the multimedia information encoded by the encoding unit S12 is directly stored in the storage unit S8 for direct playback and viewing at a later time. The following is a process of a user using the multimedia terminal and a data communication network to perform two-way interactive communication. Referring to FIG. 7, this figure is a schematic diagram of a process of video communication between multimedia terminals of the present invention using a data communication network. Specific processing The process is as follows,
A端 (发送者):  A side (sender):
1 )摄像机 260分别连接到多媒体终端 220的多媒体信息输入接口 S 13; 1) The cameras 260 are respectively connected to the multimedia information input interface S 13 of the multimedia terminal 220;
2 ) 多媒体信息输入接口 S13将收到的多媒体图象、 音频数据等多媒 体信息发送到编码单元 S4; 2) The multimedia information input interface S13 sends the received multimedia information such as multimedia images and audio data to the coding unit S4;
3 )编码单元 S4 将多媒体图象、 音频信息等多媒体信息按照固定的 格式进行压缩编码(如 MPEG1、 2、 4等编码格式), 并将压缩后得到的多 媒体信息发送到加扰器 S11;  3) the encoding unit S4 compresses and encodes multimedia information such as multimedia images and audio information in a fixed format (such as MPEG1, 2, 4 and other encoding formats), and sends the compressed multimedia information to the scrambler S11;
4 )如果用户希望保护私人数据信息, 加扰器 S11会对其进行加扰操 作, 分别生成加扰后的多媒体信息和密钥信息, 然后将其发送到数据处 理单元 S2; 如果用户不要求对数据信息进行保护, 加扰器 S11会执行空 操作, 直接将压缩后的多媒体信息发送到数据处理单元 S2;  4) If the user wishes to protect the private data information, the scrambler S11 will perform a scrambling operation to generate the scrambled multimedia information and key information respectively, and then send them to the data processing unit S2; if the user does not require the Data information is protected, the scrambler S11 performs a no-operation, and directly sends the compressed multimedia information to the data processing unit S2;
5 )数据处理单元 S2 对接收到的多媒体信息进行处理, 将其转换为 符合数据通信网的相应通信协议的数据信息格式, 并通过网络接口单元 S1发送到网络端。  5) The data processing unit S2 processes the received multimedia information, converts it into a data information format conforming to the corresponding communication protocol of the data communication network, and sends it to the network end through the network interface unit S1.
B端 (接收者) B-side (receiver)
6 )接收端多媒体终端的网络接口单元 S1从数据通信网接收到 A端 用户发送来的数据信息, 并将其发送到数据处理单元 S2;  6) The network interface unit S1 of the receiving-end multimedia terminal receives the data information sent by the A-side user from the data communication network, and sends it to the data processing unit S2;
7 )数据处理单元 S2 将数据信息中的多媒体信息分离出来, 并将其 发送到第一解扰器 S3;  7) The data processing unit S2 separates the multimedia information in the data information and sends it to the first descrambler S3;
8 ) 第一解扰器 S3 首先对接收的多媒体信息进行判断, 如发现多媒 体信息已经有加扰操作, 就对其进行相应的解扰处理; 如发现多媒体信 息未进行加扰处理, 则第一解扰器 S3进行空操作; 第一解扰器 S3将处 理后的多媒体信息发送到解码单元 S4;  8) The first descrambler S3 first judges the received multimedia information, and if it is found that the multimedia information has been scrambled, it performs corresponding descrambling processing; if it is found that the multimedia information has not been scrambled, the first The descrambler S3 performs a null operation; the first descrambler S3 sends the processed multimedia information to the decoding unit S4;
9 )解码单元 S4对接收到的多媒体信息进行解码操作, 并将生成的 数字音频、 视频信息发送到播放输出单元 S 5;  9) The decoding unit S4 performs a decoding operation on the received multimedia information, and sends the generated digital audio and video information to the playback output unit S5;
10 )播放输出单元 S5对音频、 视频信号进行相应的数模转换处理, 将其在电视终端上进行播放。 10) the playback output unit S5 performs corresponding digital-to-analog conversion processing on the audio and video signals, Play it on a TV terminal.
同理, 如将 A、 B两端的角色转换, 即使 A端为接收端, B端为发送 端, 其工作流程如上所述, 如果 A、 B两端工作在双工模式, 就可以实现 两端用户的多媒体会话业务。  Similarly, if the roles of A and B are switched, even if A is the receiving end and B is the sending end, the working process is as described above. If both ends of A and B work in duplex mode, both ends can be realized. User's multimedia session service.
参照图 3, 该图是本发明多媒体终端的第三实施例结构组成框图; 该 实施例在第一实施例的基础上, 又进而加入有线电视网接口 S15, 调谐器 S16, 解调器 S17, 解复用器 S18和第二解扰器 S19, 从而实现在本发明 多媒体终端能够在和数据通信网进行交互式通信的基础上, 能够进而接 收有线电视网发来的数字电视信号, 其中各个单元的具体作用如下: 有线电视网接口 S15, 与有线电视网连接, 用于接收有线电视网传来的射 频数字电视信号; 在本发明多媒体终端中就是一个外部接口;  Referring to FIG. 3, which is a block diagram showing the structure and composition of a third embodiment of a multimedia terminal according to the present invention. This embodiment is based on the first embodiment, and further adds a cable television network interface S15, a tuner S16, and a demodulator S17. The demultiplexer S18 and the second descrambler S19, so as to realize that the multimedia terminal of the present invention can receive digital television signals sent from the cable television network on the basis of interactive communication with the data communication network, and each unit thereof The specific functions are as follows: The cable television network interface S15 is connected to the cable television network and used to receive radio frequency digital television signals from the cable television network. In the multimedia terminal of the present invention, it is an external interface;
调谐器 S16, 与有线电视网接口 S15连接, 用于将有线电视网接口发 来的射频数字电视信号转换成中频数字电视信号;  The tuner S16 is connected to the cable television network interface S15, and is configured to convert the radio frequency digital television signal sent from the cable television network interface into an intermediate frequency digital television signal;
解调器 S17, 与调谐器 S16连接, 用于将调谐器 S16发来的中频数字电视 信号解调成主要包含数字音频信号、 数字视频信号的传输流; 及 The demodulator S17 is connected to the tuner S16 and is used for demodulating the intermediate frequency digital television signal sent from the tuner S16 into a transport stream mainly including digital audio signals and digital video signals; and
解复用器 S18, 分别与解调器 S17和解码单元 S4连接, 用于在解调 器 S17发来的传输流中提取一个节目的传输流,并将提取节目的传输流发 送给解码单元 S4进行解码操作;  The demultiplexer S18 is respectively connected to the demodulator S17 and the decoding unit S4, and is configured to extract a transport stream of a program from the transport stream sent from the demodulator S17, and send the transport stream of the extracted program to the decoding unit S4. Perform decoding operations;
当然, 解复用器 S18可以进而在通过第二解扰器 S19和解码单元 S4 连接,因为对于有线电视网发来的电视信号传输流也分为加扰传输流和未 加扰传输流两种情况, 当接收到加扰电视信号传输流时, 就要利用笫二解 扰器 S19对接收到的加扰传输流进行解扰处理后再发送给解码单元 S4进 行解码处理, 而当接收到未加扰电视信号传输流时, 就不必利用第二解扰 器 S19对接收到的未加扰传输流进行解扰处理,而是直接发送给解码单元 S4进行解码处理。  Of course, the demultiplexer S18 can be further connected to the decoding unit S4 through the second descrambler S19, because the TV signal transmission stream sent by the cable television network is also divided into two types: scrambled transport stream and unscrambled transport stream. In some cases, when a scrambled television signal transport stream is received, the second scrambler S19 is used to descramble the received scrambled transport stream and then sent to the decoding unit S4 for decoding processing. When the television signal transport stream is scrambled, it is not necessary to use the second descrambler S19 to perform descrambling processing on the received unscrambled transport stream, but directly to the decoding unit S4 for decoding processing.
参照图 6, 该图是本发明多媒体终端和有线电视网、数据通信网组成 网络结构的简单框图; 由图中可见, 本发明多媒体终端 220 可以通过接 入有线电视网 210中接收广播电视中心 200发放的数字电视节目信号, 进而经过处理后发送到电视终端 S6上进行播放。 同时本发明多媒体终端 220还可以通过接入到数据通信网 250中,进而和多媒体服务器 240进行 交互式通信, 根据用户的请求点播一些电视节目信息, 然后多媒体终端 220再将点播的电视节目信息经过处理后在电视终端 S6上进行播放。 参照图 4 ,该图是本发明多媒体终端中数据处理单元内部的具体结构组成 框图; 数据处理单元 S2 主要包括: 鉴权子单元 S200 , 数据分离子单元 S210和数据发送子单元 S220, 各个子单元的具体作用如下: Referring to FIG. 6, this figure is a simple block diagram of the network structure of the multimedia terminal, cable television network, and data communication network of the present invention. As can be seen from the figure, the multimedia terminal 220 of the present invention can receive the broadcast television center 200 by accessing the cable television network 210 The distributed digital television program signal is further processed and sent to the television terminal S6 for playback. Meanwhile, the multimedia terminal of the present invention 220 can also access the data communication network 250, and then perform interactive communication with the multimedia server 240, and request some TV program information according to the user's request, and then the multimedia terminal 220 processes the on-demand TV program information in the TV terminal. Play on S6. 4, this figure is a block diagram of the specific internal structure of the data processing unit in the multimedia terminal of the present invention. The data processing unit S2 mainly includes: an authentication subunit S200, a data separation subunit S210 and a data sending subunit S220, and each subunit The specific role is as follows:
数据发送子单元 S220, 同时与网絡接口单元 Sl、 控制单元 S7、 编码 单元 S12和存储单元 S8连接, 用于将控制单元生成的多媒体终端输入的 上传信息经编码单元 S12 处理后的数据通信网相应协议的数据信息格式 后, 通过网络接口单元 S1发送到相应的数据通信网; 同时也用于将编码 处理后存储在存储单元 S8中的上传多媒体信息转换为相应协议的数据信 息格式后通过网络接口单元 S1发送到相应的数据通信网; 同样也用于对 外部控制输入单元 S10输入的上传信息进行协议转换处理后, 通过网络 接口单元 S1发送到相应的数据通信网。  The data sending sub-unit S220 is connected to the network interface unit S1, the control unit S7, the encoding unit S12, and the storage unit S8 at the same time, and is used to correspondingly process the upload information input by the multimedia terminal generated by the control unit through the encoding unit S12 to the data communication network After the data format of the protocol is sent, it is sent to the corresponding data communication network through the network interface unit S1. At the same time, it is also used to convert the uploaded multimedia information stored in the storage unit S8 after the encoding process into the data format of the corresponding protocol and then through the network interface The unit S1 is sent to the corresponding data communication network; it is also used to perform protocol conversion processing on the upload information input by the external control input unit S10, and then send it to the corresponding data communication network through the network interface unit S1.
鉴权子单元 S200, 分别与网络接口单元 Sl、 控制单元 S7和数据分 离子单元 S210连接, 用于在控制单元 S7的控制作用下, 对网络接口单 元 S1接收到的数据通信网发来的数据信息进行鉴权分析。  The authentication subunit S200 is connected to the network interface unit S1, the control unit S7, and the data separation subunit S210, respectively, and is configured to control the data sent from the data communication network received by the network interface unit S1 under the control of the control unit S7. Information for authentication analysis.
具体鉴权过程为:  The specific authentication process is:
1.鉴权子单元 S200接收到网络接口单元 S1发送来的数据信息; 2.控制单元 S7读取智能卡内的鉴权信息, 并将其发送到鉴权子单元 1. The authentication subunit S200 receives the data information sent by the network interface unit S1; 2. The control unit S7 reads the authentication information in the smart card and sends it to the authentication subunit
S200; S200;
3.鉴权子单元 S200根据智能卡提供的鉴权信息, 对从数据通信网接 收到的数据信息进行鉴权运算, 来判断该数据信息的有效性。 如数据信 息有效, 鉴权子单元 S200将该数据信息发送到数据分离子单元 S210; 如 数据信息无效, 鉴权子单元 S200丟弃该数据信息, 并向控制单元 S7发 出错误提示信息。  3. The authentication subunit S200 performs an authentication operation on the data information received from the data communication network according to the authentication information provided by the smart card to determine the validity of the data information. If the data information is valid, the authentication subunit S200 sends the data information to the data separation subunit S210; if the data information is invalid, the authentication subunit S200 discards the data information and sends an error prompt message to the control unit S7.
数据分离子单元 S210 , 分别与鉴权子单元 S200和存储单元 S8、 或 和第一解扰器 S3连接,用于将数据通信网返回的数据信息进行分类转发。 数据通信网返回的数据信息一般由多媒体信息和控制信息两部份叙成。 其中, 多媒体信息为用户所需求的数据信息, 数据分离子单元 S O在区 分出多媒体信息后 , 会根据该多媒体终端处于实时点播或非实时下载的 操作状态, 来将该多媒体信息分别转发到第一解扰器 S3进行解扰操作或 转发给存储单元 S8进行预先下载存储; 控制信息主要是反映网络状态、 服务器状态和用户操作是否成功等数据信息, 数据分离模块在区分出控 制信息后, 会将其转发到控制单元 S7。 The data separation subunit S210 is respectively connected to the authentication subunit S200 and the storage unit S8, or to the first descrambler S3, and is configured to classify and forward the data information returned by the data communication network. The data information returned by the data communication network is generally composed of two parts: multimedia information and control information. The multimedia information is data information required by the user. After distinguishing the multimedia information, the data separation sub-unit SO will forward the multimedia information to the first one according to whether the multimedia terminal is in a real-time on-demand or non-real-time downloading operation state. The descrambler S3 performs descrambling operation or forwards it to the storage unit S8 for pre-downloading and storing. The control information mainly reflects data information such as the network status, server status, and whether the user operation is successful. After the data separation module distinguishes the control information, it will It is forwarded to the control unit S7.
参照图 5 ,该图是本发明多媒体终端中播放输出单元内部的具体模块 组成框图; 如图, 播放输出单元 S5在控制单元 S7的控制作用下, 分别 与解码单元 S4和电视终端的音频接口和视频接口连接, 用于对解码单元 S4 解码后的数字音频、 数字视频信息进行数模转换处理, 使其能够分别 输出到模拟电视终端或数字电视终端的音频接口和视频接口上; 如图, 播放输出单元 S5中进一步包括音频数模转换子单元 S50和视频数模转换 子单元 S51 , 其各个组成部分的具体作用如下:  Referring to FIG. 5, this figure is a block diagram of specific modules inside a playback output unit in a multimedia terminal according to the present invention. As shown in the figure, the playback output unit S5 is under the control of the control unit S7, and is respectively connected to the audio interface of the decoding unit S4 and the television terminal and The video interface connection is used to perform digital-to-analog conversion processing on the digital audio and digital video information decoded by the decoding unit S4, so that it can be output to the audio interface and video interface of the analog television terminal or digital television terminal, respectively. The output unit S5 further includes an audio digital-to-analog conversion sub-unit S50 and a video digital-to-analog conversion sub-unit S51. The specific functions of each component are as follows:
播放输出单元 S5从解码单元 S4接收到解码后的数字音频信号、 数 字视频信号后, 因为连接在本发明多媒体终端上的电视终端可以是普通 的模拟电视终端, 也可以为数字电视终端, 而模拟电视终端和数字电视 终端上都提供有视频接口和音频接口。  After the playback output unit S5 receives the decoded digital audio signals and digital video signals from the decoding unit S4, the television terminal connected to the multimedia terminal of the present invention can be a common analog television terminal or a digital television terminal, and the analog Video and audio interfaces are provided on both the TV terminal and the digital TV terminal.
对于模拟电视终端而言, 播放输出单元 S5需要通过音频数模转换子 单元 S50,将数字音频信号转换为模拟电视终端可以接收的模拟音频信号 后, 才能发送到模拟电视终端的音频接口进行播放; 同时需要通过视频 数模转换子单元 S51 , ^数字视频信号转换为模拟电视终端可以接收的模 拟视频信号后, 才能发送到模拟电视终端的视频接口进行播放, 即通过 视频数模转换子单元 S51 的转换处理后, 将数字视频信号转换为行、 场 扫描模拟信号, 供模拟电视终端播放。  For an analog TV terminal, the playback output unit S5 needs to convert the digital audio signal into an analog audio signal that can be received by the analog TV terminal through the audio digital-to-analog conversion sub-unit S50 before sending it to the audio interface of the analog TV terminal for playback; At the same time, the video digital-to-analog conversion subunit S51 needs to be converted into an analog video signal that can be received by an analog television terminal before it can be sent to the video interface of the analog television terminal for playback, that is, the video digital-to-analog conversion subunit S51 After the conversion process, the digital video signal is converted into a line and field scan analog signal for playback by an analog television terminal.
对于数字电视终端而言, 播放输出单元 S5可以直接将数字音频信号 发送到数字电视终端的音频接口, 而不需要再经过音频数模转换子单元 S50 的转换处理; 处理数字视频信号时, 同样通过视频数模转换子单元 S51的数模转换处理, 即将数字视频信号转换为行、 场扫描模拟信号, 供 数字电视终端播放。 当然, 本发明多媒体终端还可以在上面所讲的各个实施例的基础上, 进行各个实施例的任意组合, 以实现不同目的。 For a digital TV terminal, the playback output unit S5 can directly send digital audio signals to the audio interface of the digital TV terminal without having to go through the conversion processing of the audio digital-to-analog conversion sub-unit S50; when processing digital video signals, it also passes The digital-to-analog conversion process of the video digital-to-analog conversion subunit S51 converts digital video signals into line and field scan analog signals for digital television terminals to play. Of course, the multimedia terminal of the present invention can also perform any combination of the embodiments on the basis of the above-mentioned embodiments to achieve different purposes.
以上所述仅是本发明的优选实施方式。 应当指出, 对于本技术领域 的普通技术人员来说, 在不脱离本发明原理的前提下, 还可以作出若干 改进和润饰, 这些改进和润饰也应视为本发明的保护范围。  What has been described above are only preferred embodiments of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

权 利 要 求 Rights request
1、 一种多媒体终端, 用于使电视终端连接到数据通信网, 其特征在 于, 包括:  1. A multimedia terminal for connecting a television terminal to a data communication network, characterized in that it includes:
网络接口单元, 与所述数据通信网连接, 用于从数据通信网收发数 据信息;  A network interface unit connected to the data communication network and configured to send and receive data information from the data communication network;
数据处理单元, 与所述网络接口单元连接, 用于把所述多媒体终端 输入的各种上传信息处理成符合数据通信网相应协议的数据信息后通过 网络接口单元发送到数据通信网; 同时用于从网络接口单元接收来的数 据信息进行分离多媒体信息和控制信息的处理;  A data processing unit connected to the network interface unit and configured to process various uploaded information input by the multimedia terminal into data information conforming to a corresponding protocol of the data communication network and send the data information to the data communication network through the network interface unit; The data information received from the network interface unit is processed to separate multimedia information and control information;
控制单元, 分别与所述网络接口单元、 数据处理单元和后续每个单 元连接, 用于接收数据处理单元发来的控制信息并控制各个单元之间的 交互工作;  A control unit, which is respectively connected to the network interface unit, the data processing unit, and each subsequent unit, and is configured to receive control information sent by the data processing unit and control interaction between the units;
存储单元, 与所述数据处理单元连接, 用于存储数据处理单元分离 出的多媒体信息;  A storage unit connected to the data processing unit and configured to store multimedia information separated by the data processing unit;
解码单元, 分别与所述数据处理单元和存储单元连接, 用于对数据 处理单元分离出的多媒体信息或存储单元存储的多媒体信息进行解码处 理;  A decoding unit, respectively connected to the data processing unit and the storage unit, and configured to decode and process multimedia information separated by the data processing unit or multimedia information stored in the storage unit;
播放输出单元, 分别与所述解码单元和电视终端连接, 用于将解码 单元发来的解码处理后的多媒体信息转换成适合于电视终端播放的模拟 或数字信号, 发送到电视终端上进行播放;  A playback output unit, which is respectively connected to the decoding unit and the television terminal, and is configured to convert the decoded multimedia information sent by the decoding unit into an analog or digital signal suitable for playing by the television terminal, and send it to the television terminal for playing;
外部控制输入单元, 与所述控制单元连接, 用于将用户的操作信息 输入到控制单元, 以使控制单元将用户输入的操作信息转换成所述多媒 体终端输入的上传信息。  The external control input unit is connected to the control unit and is configured to input user operation information to the control unit, so that the control unit converts the operation information input by the user into upload information input by the multimedia terminal.
2、 根据权利要求 1所述的多媒体终端, 其特征在于, 还包括第一解 扰器, 所述数据处理单元和存储单元进一步通过该第一解扰器和解码单 元连接, 所述第一解扰器用于对数据处理单元分离出的加扰多媒体信息 或存储单元存储的加扰多媒体信息进行解扰处理。 .  2. The multimedia terminal according to claim 1, further comprising a first descrambler, wherein the data processing unit and the storage unit are further connected through the first descrambler and a decoding unit, and the first descrambler The scrambler is configured to perform descrambling processing on the scrambled multimedia information separated by the data processing unit or the scrambled multimedia information stored in the storage unit. .
3、 根据权利要求 2所述的多媒体终端, 其特征在于, 还包括: 连接到所述控制单元的智能卡接口, 用于读取智能卡中存储的用户 信息, 以使控制单元利用读取的用户信息进行相应运算处理, 并通过运 算处理后数据控制第一解扰器对数据处理单元发来的加扰多媒体信息或 存储单元存储的加扰多媒体信息进行解扰处理。 3. The multimedia terminal according to claim 2, further comprising: The smart card interface connected to the control unit is configured to read user information stored in the smart card, so that the control unit uses the read user information to perform corresponding operation processing, and controls the first descrambler to process data through the operation processed data. The descrambling multimedia information sent by the processing unit or the scrambled multimedia information stored in the storage unit is descrambled.
4、 根据权利要求 1所述的多媒体终端, 其特征在于, 还包括: 多媒体信息输入接口, 用于读取多媒体信息输入设备输入的多媒体 信息;  4. The multimedia terminal according to claim 1, further comprising: a multimedia information input interface for reading multimedia information input by the multimedia information input device;
编码单元, 分别与所述多媒体信息输入接口和数据处理单元连接, 用于对多媒体信息输入接口读取的多媒体信息进行编码处理, 并将编码 处理后的多媒体信息作为所述多媒体终端输入的上传信息发送给数据处 理单元进行数据处理。  The encoding unit is respectively connected to the multimedia information input interface and the data processing unit, and is configured to perform encoding processing on the multimedia information read by the multimedia information input interface, and use the encoded multimedia information as upload information input by the multimedia terminal. Send to the data processing unit for data processing.
5、 根据权利要求 4所述的多媒体终端, 其特征在于, 所述编码单元 进一步通过所述存储单元和数据处理单元连接, 所述编码单元将编码处 理后的多媒体信息存储到存储单元, 以使后续数据处理单元再到存储单 元中读取存储的编码后的多媒体信息进行处理或由所述多媒体终端进行 直接播放。  5. The multimedia terminal according to claim 4, wherein the encoding unit is further connected to the data processing unit through the storage unit, and the encoding unit stores the multimedia information after encoding processing in the storage unit, so that The subsequent data processing unit then reads and stores the encoded multimedia information in the storage unit for processing or direct playback by the multimedia terminal.
6、根据权利要求 4所述的多媒体终端, 其特征在于,还包括加扰器, 所述编码单元进一步通过该加扰器和数据处理单元连接, 所述加扰器用 于对经过编码单元编码处理后的多媒体信息进行加扰处理, 并将加扰处 理后的多媒体信息作为所述多媒体终端的输入信息发送给数据处理单元 进行数据处理。  6. The multimedia terminal according to claim 4, further comprising a scrambler, wherein the encoding unit is further connected to the data processing unit through the scrambler, and the scrambler is configured to encode and process the encoded unit. The scrambled multimedia information is scrambled, and the scrambled multimedia information is sent as input information of the multimedia terminal to a data processing unit for data processing.
7、 根据权利要求 1所述的多媒体终端, 其特征在于, 还包括: 有线电视网接口, 与有线电视网连接, 用于接收有线电视网传来的射频 数字电视信号;  7. The multimedia terminal according to claim 1, further comprising: a cable television network interface connected to the cable television network for receiving radio frequency digital television signals transmitted from the cable television network;
调谐器, 与所述有线电视网接口连接, 用于将有线电视网接口发来的 射频数字电视信号调谐成中频数字电视信号;  A tuner connected to the cable television network interface for tuning a radio frequency digital television signal sent from the cable television network interface into an intermediate frequency digital television signal;
解调器, 与所述调谐器连接, 用于将调谐器发来的中频数字电视信 号解调成主要包含数字音频信号、 数字视频信号的传输流; 及 解复用器,分别与所述解调器和解码单元连接, 用于在解调器发来的 传输流中提取一个节目的传输流,并将提取节目的传输流发送给解码单元 进行解码操作。 A demodulator connected to the tuner and configured to demodulate the intermediate frequency digital television signal sent from the tuner into a transport stream mainly including digital audio signals and digital video signals; and A demultiplexer, which is respectively connected to the demodulator and the decoding unit, and is configured to extract a transport stream of a program from the transport stream sent from the demodulator, and send the extracted transport stream to the decoding unit for decoding operation .
8、 根据权利要求 7所述的多媒体终端, 其特征在于, 还包括笫二解 扰器, 所述解复用器进一步通过该第二解扰器和解码单元连接,所述第二 解扰器用于对解复用器提取节目的加扰传输流进行解扰处理后,再发送给 解码单元进行解码处理。  8. The multimedia terminal according to claim 7, further comprising a second descrambler, wherein the demultiplexer is further connected to the decoding unit through the second descrambler, and the second descrambler is used for After descrambling the scrambled transport stream extracted by the demultiplexer, the program is sent to the decoding unit for decoding.
9、 根据权利要求 1所述的多媒体终端, 其特征在于, 所述数据处理 单元进一步包括:  9. The multimedia terminal according to claim 1, wherein the data processing unit further comprises:
鉴权子单元, 与所述网络接口单元连接, 用于对网络接口单元发来 的数据信息进行合法性鉴权操作;  An authentication subunit connected to the network interface unit and configured to perform a legality authentication operation on the data information sent by the network interface unit;
数据分离子单元, 分别与所述鉴权子单元和解码单元连接, 用于对 经过鉴权子单元鉴权处理后的合法数据信息进行分离多媒体信息和控制 信息的操作; 和  A data separation subunit, which is respectively connected to the authentication subunit and the decoding unit, and is configured to separate multimedia information and control information from the legal data information after the authentication subunit is authenticated; and
数据发送子单元, 分别与所述控制单元和网络接口单元连接, 用于 将所述多媒体终端输入的上传信息处理成符合数据通信网相应协议的数 据信息后通过网絡接口单元发送到相应的数据通信网。  A data sending subunit, which is respectively connected to the control unit and the network interface unit, and is configured to process the uploaded information input by the multimedia terminal into data information conforming to a corresponding protocol of the data communication network and then send the corresponding data communication through the network interface unit network.
10、 根据权利要求 1 所述的多媒体终端, 其特征在于, 所述电视终 端为数字电视终端或模拟电视终端。  10. The multimedia terminal according to claim 1, wherein the television terminal is a digital television terminal or an analog television terminal.
11、 根据权利要求 10所述的多媒体终端, 其特征在于, 所述播放输 出单元进一步包括:  11. The multimedia terminal according to claim 10, wherein the playback output unit further comprises:
视频数模转换器, 分别与所述解码单元和电视终端连接, 用于将解 码单元发来的解码后的数字视频信号转换成模拟视频信号, 并发送到电 视终端进行播放; 和  A video digital-to-analog converter, which is respectively connected to the decoding unit and the television terminal, and is configured to convert the decoded digital video signal sent by the decoding unit into an analog video signal, and send it to the television terminal for playing; and
音频数模转换器,分别与所述解码单元和模拟电视终端连接, 用于将 解码单元发来的解码后的数字音频信号转换成模拟音频信号,并发送到模 拟电视终端进行播放。  An audio digital-to-analog converter is connected to the decoding unit and the analog television terminal, respectively, and is configured to convert the decoded digital audio signal sent from the decoding unit into an analog audio signal and send it to the analog television terminal for playback.
12、 根据权利要求 1 所述的多媒体终端, 其特征在于, 所述外部控 制输入单元为红外遥控器或键盘 /鼠标设备。 12. The multimedia terminal according to claim 1, wherein the external control The control input unit is an infrared remote control or a keyboard / mouse device.
13、 根据权利要求 1所述的多媒体终端, 其特征在于, 所述存储单元为 固定存储介质和 /或移动存储介质。  13. The multimedia terminal according to claim 1, wherein the storage unit is a fixed storage medium and / or a mobile storage medium.
PCT/CN2004/001375 2004-01-19 2004-11-29 Multimedia terminal WO2005076617A1 (en)

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