WO2005046219A1 - Systeme de telecommande de reglage de television et procede a base de reseau tcp/ip - Google Patents

Systeme de telecommande de reglage de television et procede a base de reseau tcp/ip Download PDF

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Publication number
WO2005046219A1
WO2005046219A1 PCT/CN2003/000941 CN0300941W WO2005046219A1 WO 2005046219 A1 WO2005046219 A1 WO 2005046219A1 CN 0300941 W CN0300941 W CN 0300941W WO 2005046219 A1 WO2005046219 A1 WO 2005046219A1
Authority
WO
WIPO (PCT)
Prior art keywords
module
host
client
internet
command
Prior art date
Application number
PCT/CN2003/000941
Other languages
English (en)
Chinese (zh)
Inventor
Shitian Tang
Original Assignee
Televiewer Systems 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 Televiewer Systems Ltd. filed Critical Televiewer Systems Ltd.
Priority to PCT/CN2003/000941 priority Critical patent/WO2005046219A1/fr
Priority to AU2003277479A priority patent/AU2003277479A1/en
Priority to US10/998,495 priority patent/US20050120382A1/en
Priority claimed from US10/998,495 external-priority patent/US20050120382A1/en
Publication of WO2005046219A1 publication Critical patent/WO2005046219A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/65—Transmission of management data between client and server
    • H04N21/658—Transmission by the client directed to the server
    • H04N21/6581—Reference data, e.g. a movie identifier for ordering a movie or a product identifier in a home shopping application
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
    • H04N21/4183—External card to be used in combination with the client device, e.g. for conditional access providing its own processing capabilities, e.g. external module for video decoding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/4227—Providing Remote input by a user located remotely from the client device, e.g. at work
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42684—Client identification by a unique number or address, e.g. serial number, MAC address, socket ID
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4383—Accessing a communication channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/482—End-user interface for program selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6125—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via Internet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6156—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network
    • H04N21/6175—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network involving transmission via Internet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/643—Communication protocols
    • H04N21/64322—IP
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/65—Transmission of management data between client and server
    • H04N21/654—Transmission by server directed to the client
    • H04N21/6543—Transmission by server directed to the client for forcing some client operations, e.g. recording

Definitions

  • the present invention relates to the field of communications, and in particular, to a remote television tuning control system and method based on a TCP / IP network. Background technique
  • TV Program buffering The principle of (TV Program buffering) is to capture and store the content of TV programs to a hard disk, and the visitors read the data streams of these programs from a remote location for playback.
  • This method has many disadvantages, such as taking up a large amount of hard disk space, Poor performance, such as the inability to tune TV channels. Summary of the invention
  • the purpose of the present invention is to propose a remote TV tuning control system and method based on the TCP / IP network, so as to solve the shortcomings of poor real-time performance and unable to perform instant tuning in the existing IPTV technology.
  • the present invention adopts the following scheme:
  • a remote television tuning control system based on a TCP / IP network which is characterized by including a host-side module and a client-side module connected through the Internet;
  • the host-side module is connected with a TV card with a TV tuner, and the TV card is connected to the TV antenna through the TV card, receives and interprets commands sent by the client through the Internet, and performs corresponding operations on the client's TV;
  • the client module is installed with a client program for playing video / audio data from the host module, and sending control commands to the host module via the Internet;
  • the host-side module and the client-side module communicate through the TCP / IP protocol.
  • the host-side module further includes:
  • Socket transceiver module command encoder / decoder module and DirectShow TV tuning execution unit module;
  • the socket transceiver module receives a control command from a client module and passes the control command to a command encoder / decoder module; receives video / audio data from an antenna end, and encodes the data and sends it to a client through the Internet End module
  • the command encoder / decoder module decodes the control command received by the socket transceiver module and triggers the DirectShow television tuning execution unit to execute the corresponding command; and sends the corresponding tuning result feedback information to the socket transceiver module to the Client module; Controls the TV tuner according to the control commands passed by the command encoder / decoder module.
  • the client module further includes: a television tuner interface simulation module, a command encoder module, and a socket transceiver module;
  • the television tuner interface simulation module completes the input of user control commands
  • the command encoder module assembles the user's control command into a data packet and sends it to the host-side module via the socket transceiver module;
  • the socket transceiver module sends or receives data from the host-side module via the Internet.
  • the command includes a combination of one or more of channel scanning, channel switching, channel increasing, and channel decreasing.
  • the television antenna may be a cable television antenna or an ordinary television antenna.
  • the Internet connection may be a wired connection or a wireless connection.
  • a remote control method for TV tuning based on TCP / IP network, Microsoft is installed on the host side
  • the DirectShow program which communicates with the client through the Internet to control the TV tuner, is characterized by:
  • Encoding step The client encodes the control command
  • Sending steps Send the encoded data to the host end via the socket module via the Internet;
  • Decoding step the host receives the data sent by the client and decodes it;
  • Execution steps The host performs corresponding operations according to the decoded control command
  • the client receives the data sent by the ifc host through the Internet;
  • Playback steps The client plays the video / audio data sent by the host.
  • the control command includes one or a combination of channel scanning, channel switching, channel increasing, and channel decreasing.
  • the method further includes:
  • the response message includes a flag indicating whether the execution is successful.
  • the control command is carried by a separate protocol.
  • the connection between the host and the client over the Internet may be a wired connection or a wireless connection.
  • the host side further performs the following steps:
  • Initialization steps Initialize the DirectShow program, and search for the device alias corresponding to the capture card where the TV tuner is located;
  • Bundle steps Bundle the device alias corresponding to the capture card with the Filter;
  • Steps for determining the pointer Find the TV tuner control interface (IID-IAM TV Tuner) pointer from the Filter;
  • Steps to create a socket Create a server Socket
  • Step of calling the interface pointer After receiving the TV tuning message from the client, call the TV Tuner control function of the interface pointer put-channel to perform the corresponding tuning action.
  • the invention provides a remote electric tuning technology solution on an IP network. It has real-time and comprehensive advantages. It enables users to tune the receiver that the host end is connected to a closed-circuit television or antenna to receive. All channels, and not limited by TV system. BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a schematic diagram of a system connection of the present invention
  • FIG. 2 is a schematic structural diagram of a host-side module according to the present invention.
  • FIG. 3 is a schematic structural diagram of a client module of the present invention.
  • FIG. 4 is a schematic diagram of a graphical interface of a user-side television tuner emulation according to the present invention.
  • FIG. 5 is a schematic diagram of a communication protocol stack according to the present invention.
  • FIG. 6 is a flowchart of the present invention.
  • FIG. 7 is a schematic flowchart of a client for remote control in a specific embodiment of the present invention
  • FIG. 8 is a schematic flowchart of a host for remote control in a specific embodiment of the present invention.
  • FIG. 1 it is a schematic diagram of the connection of a remote television tuning control system based on the TCP / IP network of the present invention.
  • the present invention includes two different modules: a host module (Host) and a client module (Client).
  • the host-side module runs on an OS that supports DirectShow 8.0 or higher (generally Microsoft Windows series Windows 98 / ME / 2000 / XP / 2003 Server or later). It loads the Microsoft DirectShow program.
  • the Microsoft DirectShow provides the function of controlling hardware to directly drive the TV card;
  • the host-side module has a DirectShow-recognizable TV card, which is connected to a closed-circuit TV or an antenna;
  • the client module runs on a supported TCP / IP operating system.
  • the operating system can be Microsoft PC Windows series, Unix, Linux, Mac OS, Windows CE, Palm OS, OS9000 and other embedded operating systems.
  • Both the host module and the client module 3 ⁇ 4 are connected to the Internet.
  • the connection medium can be wireless or wired, depending on the specific environment and conditions.
  • the client module of the present invention can be PC, MAC, SUN Workstation, and PocketPC, which need to meet two conditions:
  • the operating system must support the TCP / IP protocol
  • the host-side module For the host-side module, it must support DirectX 8.0 or higher, generally Microsoft Windows series (can be Windows 98, Windows ME, Windows 2000, Windows XP, Windows Server 2003 or later). It must have a TV tuning device recognized by DirectShow and the device Connected to CCTV or TV antenna.
  • the client module needs to be connected to the Internet.
  • the IP of the host module can be a global IP address or a ⁇ 5 address of the local area network. However, only clients in the local area network can access it.
  • the host-side module of the present invention mainly includes: a socket transceiver module, a command encoder / decoder module, and a DirectShow television Tuning execution unit module, where:
  • the socket transceiver module receives the control command from the client module and passes the control command to the command encoder / decoder module; receives the video / audio data from the antenna, and encodes the data and sends it to the client module via the Internet ;
  • the command encoder / decoder module decodes the control command received by the socket transceiver module and triggers the DirectShow TV tuning execution unit to execute the corresponding command; and sends the corresponding tuning result feedback information to the client module through the socket transceiver module ;
  • the DirectShow TV Tuning Unit calls Microsoft DirectShow, and the control command passed by the command encoder / decoder module implements control of the TV tuner.
  • FIG. 3 it is a schematic diagram of the logical structure of the client module of the present invention. As can be seen from the figure, it mainly includes a television tuner interface simulation module, a command encoder module, and a socket transceiver module, where: The TV tuner interface simulation module completes the input of user control commands;
  • the command encoder module assembles user control commands into data packets and sends them to the host-side module via the socket transceiver module;
  • the socket transceiver module sends or receives data from the host-side module via the Internet.
  • FIG. 4 it is a schematic diagram of a user-side television tuner simulation graphical interface according to the present invention.
  • the interface simulation of the user-side television tuner is a television tuner simulation graphical interface, or it may be a pure command string. "12", the client sends a command to the host to switch to 12 channels.
  • the client module and the host module of the present invention communicate through TCP / IP or UDP / IP, but on top of TCP or UDP, we have added a layer of its own protocol, which can be called CP (Command Protocol as shown in Figure Figure 5 is a schematic diagram of the protocol stack of the present invention, where CP is a layer of protocol over TCP or UDP, and one or more CP data packets can be used as TCP or UDP raw data to be transmitted.
  • CP Common Protocol as shown in Figure Figure Figure 5 is a schematic diagram of the protocol stack of the present invention, where CP is a layer of protocol over TCP or UDP, and one or more CP data packets can be used as TCP or UDP raw data to be transmitted.
  • msgld is a predefined message identifier.
  • message identifiers are defined in this embodiment:
  • This message is used by the Client to send a TV tuning command to the Host. If the first bit of data is 0, the host performs channel scanning; if the first bit of data is 1, it means to add a channel; if the first bit of data is 2, it means to decrease one channel; if the first bit of data is 3, It means that the current channel is changed to the channel indicated by the second data, and the channel value can be 0-255.
  • This message is used by the host to send a confirmation message to the client. If the value of the next bit of data is 0, it indicates that the command was executed successfully, and the other values were failed.
  • This variable is the length of the data packet, and the maximum value is 65500 bytes;
  • Source address definition srcAddr
  • This quantity is the source IP address.
  • the general format of an IP address is xxx.xxx.xxx.xxx.xxx. We convert each field value to hexadecimal, so that it becomes OxFFFFFF, which can be represented by an unsigned long data.
  • This variable is the destination IP address, and its format is the same as srcAddr;
  • This variable can be used to record the transaction number of the packet so that the receiver can track successful and failed packets.
  • FIG. 6 it is a schematic flowchart of the present invention. As can be seen from the figure, the use of the present invention may include the following steps:
  • the client encodes the control command
  • the client module encodes the command to be sent according to the requirements, and the encoding method can use the content described earlier in this embodiment;
  • S2 Send the encoded data to the host through the socket module via the Internet;
  • the client module sends the above data to the host via the Internet
  • S3 The host receives the data sent by the client and decodes it
  • the host end decodes the received data according to the encoding rules to obtain the client's original command
  • the host performs corresponding operations according to the content of the control command, including content such as channel switching;
  • S5 The client receives data sent by the host via the Internet
  • the host sends the content of the operation after the command is executed to the client through the Internet;
  • the client plays the video / audio data sent by the host.
  • FIG. 7 and FIG. 8 are schematic flowcharts of a specific implementation manner of the foregoing protocol structure according to the present invention.
  • the detailed process of the host and client processes of a remote TV tuning control may include:
  • For the client module includes the following steps:
  • Step one Initialize the socket and create a client socket for the host-side IP and Port;
  • Step 2 Create the user interface. If the client wants to play the video from the host, you need to initialize the corresponding player.
  • Step 3 If the user interacts with the corresponding command control, encode the corresponding command and send it to the host through the socket
  • For host-side modules include the following steps:
  • Step 1 Initialize DirectShow, search for the alias of the capture card where the TV tuner is located;
  • Step 2 Build CaptureBuilder2 and create a Filter diagram
  • Step 3 Bundle the device alias corresponding to the digital camera with the video filter (Filter); Step 4: Associate the Filter graph with CaptureBuilder2;
  • Step 5 Add the video capturer (Filter) to the picture
  • Step 6 Find the TV tuner control interface (IID—IAM TV Tuner) pointer from the video capturer (Filter);
  • Step 7 If all of the above are successful, create a server socket and wait for data from the client; Step 8: If a TV tuning message from the client is received, call the function put_chamiel of the TV Tuner control interface pointer to perform the corresponding tuning action A response message is sent to the client, whose first data bit contains the success or failure of the above action.
  • the present invention adopts network remote control technology and method, and has the following positive effects:
  • the operation is simple and flexible, and the introduction of remote control through the network can make the use of the TV tuner flexible and convenient, and get rid of the obstacle of the distance brought by manual control;
  • the operating platform used in the present invention can be consistent with the platform used in the remote network control in the prior art, and the operating system used is also a commonly used operating system, and there is no need to make much improvement in implementation.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Software Systems (AREA)
  • Human Computer Interaction (AREA)
  • Power Engineering (AREA)
  • Selective Calling Equipment (AREA)

Abstract

La présente invention a trait à un système et un procédé de télécommande de réglage de télévision à base de réseau TCP/IP. Le système comporte un module hôte et un module client ; le module hôte assure la connexion de la carte de télévision comprenant un dispositif d'accord de télévision, de l'antenne de télévision par la carte de télévision ; le module client est muni d'un programme client pour la lecture de données vidéo/audio à partir du module hôte, transmet une commande de contrôle au module hôte par Internet. Le procédé comprend : une étape de codage : le client effectue le codage de commande de contrôle ; une étape de transmission : la transmission des données codées vers l'hôte par un module de port de connexion ; une étape de décodage : l'hôte reçoit les données transmises en provenance du client et en effectue le décodage ; une étape de réalisation : l'hôte effectue une opération correspondante selon la commande de contrôle ; une étape de réception : le client reçoit les données transmises en provenance de l'hôte par Internet; une étape de lecture ; le client effectue la lecture des données vidéo/audio transmises en provenance de l'hôte. La présente invention permet le développement d'un nouveau domaine pour l'utilisation d'un dispositif d'accord de télévision.
PCT/CN2003/000941 2003-11-07 2003-11-07 Systeme de telecommande de reglage de television et procede a base de reseau tcp/ip WO2005046219A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/CN2003/000941 WO2005046219A1 (fr) 2003-11-07 2003-11-07 Systeme de telecommande de reglage de television et procede a base de reseau tcp/ip
AU2003277479A AU2003277479A1 (en) 2003-11-07 2003-11-07 Remote television tune control system and method based on tcpap network
US10/998,495 US20050120382A1 (en) 2003-11-07 2004-11-29 System and method of remotely controlling a TV tuner over a TCP/IP network

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/CN2003/000941 WO2005046219A1 (fr) 2003-11-07 2003-11-07 Systeme de telecommande de reglage de television et procede a base de reseau tcp/ip
US10/998,495 US20050120382A1 (en) 2003-11-07 2004-11-29 System and method of remotely controlling a TV tuner over a TCP/IP network

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/998,495 Continuation US20050120382A1 (en) 2003-11-07 2004-11-29 System and method of remotely controlling a TV tuner over a TCP/IP network

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Publication Number Publication Date
WO2005046219A1 true WO2005046219A1 (fr) 2005-05-19

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0632655A2 (fr) * 1993-06-29 1995-01-04 Link Research Limited Appareil de télévision
JP2003022224A (ja) * 2001-07-09 2003-01-24 Fujitsu Ltd ネットワークを介して相互接続された複数の機器の連携動作の制御
JP2003032311A (ja) * 2001-07-19 2003-01-31 Sony Corp 制御方法、伝送システム及び伝送装置
CN1411663A (zh) * 1999-10-18 2003-04-16 金钟海 可寻址电视广播系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0632655A2 (fr) * 1993-06-29 1995-01-04 Link Research Limited Appareil de télévision
CN1411663A (zh) * 1999-10-18 2003-04-16 金钟海 可寻址电视广播系统
JP2003022224A (ja) * 2001-07-09 2003-01-24 Fujitsu Ltd ネットワークを介して相互接続された複数の機器の連携動作の制御
JP2003032311A (ja) * 2001-07-19 2003-01-31 Sony Corp 制御方法、伝送システム及び伝送装置

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