WO2007028309A1 - Procede de mise en oeuvre et systeme de mise en oeuvre de television a decalage temporel - Google Patents

Procede de mise en oeuvre et systeme de mise en oeuvre de television a decalage temporel Download PDF

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Publication number
WO2007028309A1
WO2007028309A1 PCT/CN2006/001814 CN2006001814W WO2007028309A1 WO 2007028309 A1 WO2007028309 A1 WO 2007028309A1 CN 2006001814 W CN2006001814 W CN 2006001814W WO 2007028309 A1 WO2007028309 A1 WO 2007028309A1
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WO
WIPO (PCT)
Prior art keywords
channel
time
live
service system
shifted
Prior art date
Application number
PCT/CN2006/001814
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English (en)
Chinese (zh)
Inventor
Qianpeng Liu
Yonghong Guo
Xutong Fan
Feng Xu
Original Assignee
Zte Corporation
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 Zte Corporation filed Critical Zte Corporation
Publication of WO2007028309A1 publication Critical patent/WO2007028309A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications
    • H04N7/17318—Direct or substantially direct transmission and handling of requests
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/231—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
    • H04N21/23106—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion involving caching operations
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
    • H04N21/26258—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists for generating a list of items to be played back in a given order, e.g. playlist, or scheduling item distribution according to such list
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
    • H04N21/26266—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists for determining content or additional data repetition rate, e.g. of a file in a DVB carousel according to its importance
    • 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
    • H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
    • H04N21/47208—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting near-video-on-demand content

Definitions

  • the invention relates to a method for controlling media playing in the field of a network set-top box, in particular to a method and a system for implementing a time-shifted television when a set-top box is broadcasted.
  • the control method is not rich enough, and the technical solution is not mature enough.
  • the IPTV set-top box has operations such as fast forward, fast rewind, pause, resume, and positioning playback for on-demand programs, but there are not many control methods for live programs, such as channel switching, playing, and stopping; watching live programs, traditional
  • the concept is also passive, there is no similar operation on demand.
  • the technical problem to be solved by the present invention is to provide a method for realizing a time-shifted television and an implementation system thereof, which solves the technical problem that the prior art cannot perform on-demand operation on a live program.
  • the present invention provides a method for implementing a time-shifted television, characterized in that the video service system performs real-time playback of a program of a preset time-shifted channel, and simultaneously performs real-time recording and storage; the user terminal and the video
  • the service system establishes a live channel, watches the live broadcast program, and establishes a time shift channel, and performs on-demand playback of the recorded program on the time shift channel through various control operations.
  • the method for implementing the time-shifted television is characterized in that the method further includes the following steps: Step 1: The video service system records and stores the program of the time-shifted channel, and establishes between the set-top box of the user end and the video service system. Live channel, and live broadcast reception, the live channel includes a signaling channel and a live media channel;
  • Step 2 After receiving the time shift operation of the control terminal of the user end, the set top box establishes a time shift channel with the video service system, and performs time shift media reception;
  • the method for implementing the time-shifted television is characterized in that, within the range recorded by the video service system, the control terminal of the user terminal performs various control operations of the on-demand service through the set-top box of the user terminal.
  • the method for implementing the time shift television is characterized in that, when the set top box receives the control terminal The set top box notifies the video service system to disconnect through the signaling channel when the channel switching command or the stop command is issued.
  • Step 11 The set-top box acquires a live broadcast address, a port, and a media stream description information from the video service system, and completes establishing the signaling channel. The interaction process of the connection;
  • Step 12 The set top box directly receives the media stream from the live broadcast address, maintains the signaling channel, and maintains until the time shift channel reception ends.
  • the method for implementing the time-shifted television is characterized in that: the step 2 further includes: Step 21, the set-top box sends a time-shift operation request to the video service system in the signaling channel;
  • Step 22 The video service system uses the signaling channel to notify the set top box to perform live to time shifting.
  • Step 23 The video service system transmits time-shifted media data on a time-shifted channel.
  • the method for implementing the time-shifted television is characterized in that, after the content of the time-shifted channel catches up with the playing content of the live channel, the video service system performs switching from the time-shifted channel to the live channel.
  • the method for implementing the time-shifted television is characterized in that, in the channel list, the video service system performs time-shifting marking on the time-shifted channel to distinguish it from an ordinary live channel.
  • the method for implementing the time-shifted television is characterized in that: the various control operations of the on-demand service include: pause play, resume play, fast forward, rewind, position play, stop play, one button to the end, and one button to the end.
  • the one-key to the first finger is in a live broadcast or time-shift state, and the program can be switched to the beginning of the time-shifted program by pressing a button, wherein in the live broadcast state, the set-top box is to be switched from live broadcast to time shift;
  • the key to the tail refers to the time shift state, press a button, the program can catch up with the current live program, and switch the time shift channel to the live channel.
  • the time shift television implementation method is characterized in that: the time shift channel and the live channel can be switched by a control operation, or can be simultaneously viewed through a time shift channel and a live channel.
  • the present invention further provides an implementation system for a time-shifted television, comprising: a video service system and a client; the video service system is configured to preset a time shift channel The live live program is recorded; the client is configured to establish a time shift channel with the video service system, and perform on-demand playback of the recorded program on the time shift channel through various control operations.
  • the implementation system of the time-shifted television is characterized in that the video service system performs switching of a live channel and a time-shift channel, playback control of a time-shifted channel medium, and closing of a time-shifted channel according to the various control operations.
  • the implementation system of the time-shifted television is characterized in that: the user terminal comprises: a set top box, a control terminal and a display device; the control terminal is configured to send various control operations of the time shift operation and the on-demand service to the set top box;
  • the set top box establishes a signaling channel and a live media channel connection with the video service system, establishes a time shift channel connection with the video service system after receiving the time shift operation, and performs the various types through the signaling channel.
  • Control operation the display device is used for live or time-shifted media playback.
  • the present invention is a time shift control method for a live program, that is, for a live program, a similar on-demand control method can be performed.
  • the time shift control method proposed by the invention has the characteristics of simple implementation, intuitive interface and flexible operation. By adopting the method of the invention, the time shift control of the time shift channel can be realized, so that the time-shifted live program can be flexibly played back, and the program can no longer be passively viewed.
  • the method of the invention is simple to implement, the interface is intuitive, and the operation is flexible and convenient. Greatly enhance the advantages and competitiveness of IPTV set-top boxes. BRIEF DESCRIPTION OF THE DRAWINGS
  • Figure 1 is a composition diagram of the system of the present invention
  • Figure 2 is a time shift state transition diagram of the present invention
  • Figure 3 is a flow chart of a typical time shift control process of the present invention.
  • FIG. 4 is a flow chart of the steps of the method of the present invention. The best way to implement the invention
  • the method for implementing a time-shifted television of the present invention is used for a time-shifted television implementation system including a video service system and a client, wherein the video service system performs real-time playback of a program of a preset time-shifted channel, and simultaneously performs real-time recording and storage.
  • the client establishes a live channel with the video service system, watches the real-time broadcast program, and establishes a time shift channel, and performs on-demand playback of the recorded program on the time shift channel through various control operations.
  • Figure 4 is a flow chart showing the steps of the method of the present invention. As shown in FIG.
  • Step 401 The video service system performs real-time playback on a time-shifted channel, simultaneously performs real-time recording and storage, and establishes signaling between the set-top box and the video service system. Channel and live media channel, and live broadcast reception;
  • Step 402 After receiving the time shift operation of the remote controller, the set top box establishes a time shift channel connection with the video service system, and performs time shift media reception;
  • Step 403 The control terminal device performs various control operations of the on-demand service through the set-top box in a range recorded by the video service system.
  • Step 404 When the set top box receives the channel switching command or the stop command of the control terminal, the set top box notifies the video service system to disconnect through the signaling channel.
  • the time-shifted media channel may be an original live signaling channel, that is, the time-shifted media data may be transmitted in the signaling channel, or may be a separate channel established separately;
  • the live broadcast is a play form, a service name, and technically You can use unicast or multicast.
  • the time shift system includes: a control terminal 101, a set top box 102, a video service system 103, and a display device 104.
  • the control terminal 101 can be a remote controller, a wireless keyboard, etc., and the time shift control button is set to send a wireless signal to perform time shift control operation on the set top box 102.
  • the time shift control button is the same as the on-demand control button, such as the positioning button for the positioning control, the increase button, the decrease button, the determine button, the number button, the fast forward, rewind, pause/resume for the playback speed control, one button to the first , one-click to the end, stop, etc.
  • the increase key and decrease key can be replaced by "volume + ", "volume one", or other keys can be used to complete the function.
  • a button to the head refers to the live broadcast or time shift state
  • press a button the program can switch to the beginning of the time shift program, in the live broadcast state, the set top box to live broadcast to time shift.
  • the program In the one-touch to the tail-finger time-shifting state, by pressing a button, the program can catch up with the current live program, and perform time-shifting of the channel to the live channel, and turn off the time-shifted channel.
  • buttons can be marked with text, graphically, or simultaneously.
  • the table below indicates the graphical representation of some of the buttons.
  • the set top box 102 can perform functions such as live broadcast, on-demand, and the like, and can communicate with the video service system 103 according to the control of the control terminal 101 to parse commands and media data from the video service system 103.
  • the video service system 103 can provide time-shifted and live broadcast transmissions, and can provide on-demand and live broadcast services according to the requirements of the set-top box 102. For time-shifted channels, the recorded broadcast service can be provided. The video service system 103 can respond accordingly based on the request of the set top box 102. The control request for the time shift can be correspondingly responded and processed according to the agreed interface with the set top box 102.
  • the display device 104 is responsible for displaying the video and images that the set top box 102 is required to play.
  • Control of the time shift channel between the video service system 103 and the set top box 102 is performed through a contracted interface.
  • the set-top box For time-shifted channel playback, the set-top box needs to establish a signaling channel connection with the video service system, such as RTSP (Real Time Streaming Protocol) connection, and maintains the reception of this time-shifted channel.
  • the set-top box then receives the multicast media stream and starts the playback of a live program.
  • the set top box issues a command request to the video service system through the RTSP connection channel.
  • the set top box stops receiving media data from the multicast channel, but receives the unicast media data through the RTSP connection channel, which may be referred to as a time shift state.
  • time shift state if the time shift operation is continued, time shift control and unicast data reception are continued on the RTSP connection channel.
  • the state switch between the time shift and the live broadcast, the VCR parameter change, the time stamp change, and the RTP (Real-time Transport Protocol) is a transmission protocol for the multimedia data stream on the Internet.
  • the package serial number is changed, the corresponding processing is performed.
  • the video page service system issues live media data in the live channel.
  • the video service system can record and order on-demand. Tell the set-top box when there is an RTSP connection from the set-top box Basic information about the time shift channel, time shift range, and the like.
  • the set-top box requests a time-shift operation,
  • the RTSP connection channel notifies the set-top box to perform multicast to unicast switching and transmits corresponding media data.
  • the set-top box is notified to move to the live state transition, and the transmission of the mobile media data is stopped.
  • the video service system also issues information such as VCR parameter changes, time stamp changes, and RTP packet number changes to the set-top box in the corresponding cases.
  • the process of on-demand and normal live broadcast is a known process.
  • the following describes the communication interface between the set-top box and the video service system involved in the time shifting part in the implementation scheme:
  • the signaling between the set-top box and the video service system uses the RTSP protocol. Both parties follow the instructions below.
  • the standard text of the RTSP protocol is used for the parts not mentioned below:
  • the current location is as follows:
  • the current position of the program is the starting position of the program, and the current location of the live program is the media stream currently received by the streaming server. position.
  • the set-top box uses the standard DESCRIBE command to initiate a connection request to the streaming server, and the streaming server responds.
  • the streaming server When the streaming server does not support the current command of the set-top box (such as receiving a fast-forward command in the live broadcast state), it needs to send a response notification to the set-top box, indicating that the command is not supported in the current state.
  • the live broadcast interface of the ISMA MP4 can be implemented by using the signaling of the RTSP.
  • the basic process is equivalent to the on-demand interface, and only the information in the DESCRIBE response of the streaming server is used to identify the current live broadcast interface.
  • the set-top box will establish the live channel reception by itself, and the DESCRIBE response can use the field to indicate that the current time-shifted TV is live.
  • the streaming server DESCRIBE response field contains a live broadcast address, it indicates that the current RTSP connection is a live broadcast connection, and the live broadcast address is notified in this field.
  • Time-shifted TV is a function of adding on-demand (time shifting) to the live broadcast, so that the recorded live content can be VCR (pause/fast forward/rewind/restore, etc.).
  • the live broadcast is divided into unicast and multicast modes.
  • the unicast mode is the same as the on-demand process.
  • the unicast mode is the same as the on-demand process.
  • the multicast mode is not supported.
  • the multicast stream can be received, but for time-shifted TV, a signaling channel needs to be maintained for transmitting time-shifted signaling, and a media channel needs to be maintained for transmitting the time-shifted stream.
  • the embodiment is uniformly defined as follows:
  • the flow and signaling interface of the time-shifted TV adopts the RTSP on-demand flow and signaling interface, and is only distinguished on the specific fields of the message. See the subsequent description. If there is no special description, the corresponding command interface and message field of the time-shifted TV It is exactly the same as the on-demand interface.
  • the time-shifted part of the time-shifted TV is unified.
  • the RTSP signaling (TCP) channel is transmitted, whether the multicast part is multicast or UDP unicast or TCP unicast.
  • Time-shifted program URL (Uniform Resoure Locator) definition: Time-shifted URL is exactly the same as on-demand implementation
  • the playback request and URL of the time-shifted channel are exactly the same as the program-on-demand.
  • the set-top box can determine whether the current program is live or on-demand through the response message of the DESCRIBE by the streaming server (see 1.2). For the live program, the DESCRIBE response message field indicates that this is Time shift Channel.
  • the streaming server should notify the set-top box to switch to the normal playing state, using the RTSP SET—
  • the PARAMETER command extension is used to implement this function by notifying the set-top box to switch to live or recording and the current playback rate by the SET-PARAMETER command.
  • the set-top box will switch according to the above two streaming server control commands at any time, but for time-shifted TV, it is necessary to follow certain user logic to ensure that the switching conforms to the user's usage habits. See the instructions below for instructions.
  • the server judges according to the actual situation, if it is not allowed, the response is cancelled. If it is allowed, the direct response can be, and the relevant time stamp, serial number and other messages are added in the additional field.
  • the PLAY response can be. Send a message notification when rewinding to the head. The subsequent behavior at this time is that the streaming server plays by default from the recording head.
  • the server judges according to the actual situation. If it is not allowed, the response is cancelled. If it is allowed, the direct response can be made, and the relevant time stamp, serial number and other messages are added in the additional field.
  • the server sends a field notification. The subsequent behavior at this time is that the server directly sends the live stream, and no response from the set-top box is required.
  • the server judges according to the actual situation, if it is not allowed, the response is canceled. If it is allowed, the direct response can be made, and the relevant time stamp, serial number and other messages are added in the additional field. At this time, it is the recording mode. Note that the switching of the live broadcast mode is determined by the server, and the set-top box is notified according to the foregoing interface. d. If it is paused, whether to allow the suspension, the server judges according to the actual situation, if it is not allowed, the response is cancelled. If it is allowed, the direct response can be. When entering the fast forward/rewind or normal play mode by pause, the standard RTSP command must be used to switch to the recording stream. When the pause is switched to fast forward/rewind or normal mode, the flow is described in the corresponding section. .
  • the set-top box If the positioning is played, the set-top box sends a standard RTSP PLAY command notification during positioning playback, the server responds and switches to the recording mode. If the set-top box is positioned to the current live location (the scroll bar is in the end), the set-top box still reports via the RTSP PLAY command. Server, indicating that the current location starts, the server responds to accept (and can also send a rejection) and then switches to live broadcast by sending SetParameter.
  • the set-top box still informs the server through the RTSP PLAY command, indicating that the server response is acceptable from the current position (it can also send 455 rejection) and then switch to live broadcast by sending SetParameter.
  • the duration of the recorded program has been notified.
  • the set-top box uses this field to complete the positioning time shift.
  • Step 301 entering a live broadcast of a time shift program
  • Step 302 press the fast back button
  • Step 303 rewinding and playing back
  • Step 304 press the fast forward button
  • Step 305 fast forward and time shift playback
  • Step 306 it is determined whether the notification is received when the streaming server is received, and if yes, step 307 is performed; otherwise, step 305 is performed;
  • Step 307 switch to the live broadcast, and exit the time shift play.
  • the invention relates to a method for controlling media playing in the technical field of a network set-top box, in particular to a technology for realizing time-shifted television when a set-top box is in live broadcast.
  • time shift control of a time-shifted channel can be effectively realized, so that the live broadcast program is no longer only
  • the program can be passively viewed, and the playback of the live program is similarly on-demand, and the method of the invention is simple, flexible and convenient, and greatly enhances the advantages and competitiveness of the set-top box.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Human Computer Interaction (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

L'invention concerne un procédé de mise en oeuvre et un système de mise en oeuvre de télévision à décalage temporel, le procédé comprenant les étapes suivantes: lecture du programme de diffusion directe du canal de fréquence à décalage temporel prédéterminé en temps réel par le système de serveur de vidéo, et enregistrement et stockage simultanés dudit programme; établissement du canal de diffusion directe entre les terminaux utilisateurs et le système de serveur de vidéo, et programme de visualisation lancé en temps réel; et établissement du canal à décalage temporel, et demande et lecture du programme enregistré sur ledit canal à décalage temporel par le biais de l'opération de différents contrôles.
PCT/CN2006/001814 2005-09-06 2006-07-24 Procede de mise en oeuvre et systeme de mise en oeuvre de television a decalage temporel WO2007028309A1 (fr)

Applications Claiming Priority (2)

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CNA2005100863613A CN1929596A (zh) 2005-09-06 2005-09-06 一种时移电视的实现方法及其实现系统
CN200510086361.3 2005-09-06

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CN105338420B (zh) * 2014-08-15 2019-02-26 中国电信股份有限公司 媒体播放方法和装置以及提供装置和播放系统
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CN114339432A (zh) * 2022-01-12 2022-04-12 中国联合网络通信集团有限公司 视频假直播方法、装置、设备及介质

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