CN101374210B - Shift method, system and digital TV set-top boxes - Google Patents

Shift method, system and digital TV set-top boxes Download PDF

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Publication number
CN101374210B
CN101374210B CN 200710076639 CN200710076639A CN101374210B CN 101374210 B CN101374210 B CN 101374210B CN 200710076639 CN200710076639 CN 200710076639 CN 200710076639 A CN200710076639 A CN 200710076639A CN 101374210 B CN101374210 B CN 101374210B
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shift
channel
service
broadcast
time
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CN 200710076639
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Chinese (zh)
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CN101374210A (en
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罗伟
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华为技术有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/16Analogue secrecy systems; Analogue subscription systems
    • H04N7/173Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309Transmission or handling of upstream communications
    • H04N7/17318Direct or substantially direct transmission and handling of requests
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/21Server components or server architectures
    • H04N21/218Source of audio or video content, e.g. local disk arrays
    • H04N21/2187Live feed
    • 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
    • H04N21/47End-user applications
    • H04N21/472End-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
    • H04N21/47208End-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
    • 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
    • H04N21/47End-user applications
    • H04N21/472End-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
    • H04N21/47214End-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 content reservation or setting reminders; for requesting event notification, e.g. of sport results or stock market
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording

Abstract

本发明涉及通信技术,公开了一种数字电视时移方法、系统及机顶盒。 The present invention relates to communication technologies, shift method, system, and discloses a digital set-top box when the television. 本发明中,在收到DTV直播频道的时移请求时,从DTV直播频道与该频道的时移服务的对应关系中查找与所请求的直播频道对应的时移服务,输出该时移服务提供的该直播频道的时移码流,从而使得用户在接收DTV时,能够使用时移服务。 In the present invention, the time shift request is received at the DTV broadcast channel, the corresponding relationship when the DTV broadcast channel from the channel shift in the service lookup with live channel shift corresponding to the requested service, the service providing output shift when the shift live channel stream, so that the user upon receiving a DTV, the service time shift can be used. 该对应关系至少包括:直播频道的频点、直播服务标识Service ID、时移服务标识。 The correspondence relationship comprising at least: frequency live channel, broadcast service identification Service ID, time-shifted service identification.

Description

数字电视时移方法、系统及机顶盒 Shift method, system and digital TV set-top boxes

技术领域 FIELD

[0001] 本发明涉及通信技术,特别涉及数字电视时移技术。 [0001] The present invention relates to communication technology, particularly relates to shifting the digital television technology. 背景技术 Background technique

[0002] 随着多媒体通信尤其是数字视频技术的发展、以及社会的需求,各种各样的视频技术随之诞生。 [0002] With the development of multimedia communication, especially digital video technology, and the needs of the community, a variety of video technology will be born. 目前最受关注的有两大视频业务:已经发展得较为成熟的数字电视(Digital Television,简称“DTV”),和之后出现的交互式网络电视(Internet Protocol Television,简称“ IPTV,,)。 Currently there are two most talked about video services: IPTV appear after it has been developed more mature DTV (Digital Television, referred to as "DTV"), and (Internet Protocol Television, referred to as "IPTV ,,).

[0003] 传统的DTV是通过原有的模拟电视通道(包括有线网络、卫星广播、地面广播)提供直播业务,将原来的模拟频道数字化,为用户提供数字化的电视直播频道。 [0003] Traditional DTV broadcast service is provided via the existing analog television channels (including a wired network, a satellite broadcast, terrestrial broadcast), the original digital analog channel, to provide users with digital broadcast television channels. 为了在原有电视机上开展DTV业务,一般需要增加一个机顶盒(Set Top Box,简称“STB”),由STB对数字信号进行处理后再传送到电视机上。 In order to carry out business in the original TV DTV, generally need to add a set-top box (Set Top Box, referred to as "STB"), processes the digital signal and then transmitted by the STB to the TV.

[0004] IPTV主要通过IP网络为用户提供传统的电视直播频道,除了传统的电视直播频道外,IPTV还可以提供视频点播(Video on Demand,简称“V0D”,)、时移等交互业务。 [0004] IPTV specializes in traditional live TV channels to users, in addition to the traditional TV broadcast channels, IPTV can also provide video on demand (Video on Demand, referred to as "V0D",), time-shifted and other interactive services over IP networks. 时移业务是指允许用户在观看直播电视时,在一定时间范围内,进行暂停、快进、快退操作。 When the shift is meant allowing business users while watching live TV, within a certain time frame, pause, fast forward, rewind operation.

[0005] IPTV业务通过如图1所示的直播源、交互业务系统和机顶盒实现上述功能,该交互业务系统包括以下功能模块:编码器、业务管理系统(BusinessManage System,简称“BMS”)、VOD 服务器、电子节目指南(ElectronicProgram Guide,简称“EPG”)。 [0005] IPTV service broadcast by a source as shown in FIG, interactive services and the set-top box system to achieve the above functions, the interactive service system includes the following functional blocks: an encoder business management system (BusinessManage System, referred to as "BMS"), VOD server, an electronic program guide (ElectronicProgram Guide, referred to as "EPG").

[0006] 直播源经过编码器编码后进入VOD服务器,VOD服务器对每个频道提供对外直播服务,同时将码流录制到服务器上,当用户通过机顶盒要求时移时,VOD服务器将录制在服务器上的码流文件按时移的位置进行相关的播放,如暂停、快退、快进。 [0006] After the broadcast source encoder for encoding into the VOD server, a VOD server provides service for each broadcast channel outside while the stream recording to the server, the user moves through the set-top box required, recorded on the server VOD server the time-shifted code stream file related to the play position, such as pause, rewind, fast forward.

[0007] 然而,由于IPTV业务需要IP网承载所有频道的直播业务,对IP网的投资要求很高,而且在服务质量(Quality of krvice,简称“QoS”)得不到很好保障的情况下,频道的直播质量没有数字电视通过广播通道提供的直播质量好。 Under [0007] However, due to the IPTV business needs IP network carrying live traffic in all channels of high investment requirements IP network, but also in the quality of service (Quality of krvice, referred to as "QoS") are not very good security situation , broadcast quality digital television channels did not live through good quality broadcast channels provide. 所以,为了结合两种业务的优点, 目前开始尝试在DTV上提供时移业务。 So, in order to combine the advantages of both services, the current began to try to shift the provision of services on DTV.

[0008] DTV与IPTV最大的不同,在于DTV仍然利用原有的电视直播通道提供直播频道业务,而不像IPTV是利用IP通道进行直播。 [0008] The biggest difference DTV and IPTV, DTV is still using the original live television channels provide live channels of business, rather than using IP IPTV channels broadcast live. 现有技术直接在当前的DTV业务中调用部分IPTV 中的功能,即调用交互业务系统,来实现在DTV上提供时移服务,如图2所示。 The prior art call IPTV functional part directly in the current DTV service, i.e. call interactive service system, to achieve shifting while the service is provided on the DTV, as shown in FIG. 图2中左半部分为DTV相关功能模块,右半部分为调用的交互业务系统。 FIG 2 is a left half DTV module related functions, the right part of the interactive service system call.

[0009] 在以DTV为基础提供时移服务时,由DTV传统头端提供直播业务,交互业务系统提供直播/时移/录播业务,用户使用时移业务时,需要先切换到交互业务系统的直播,再进行时移,此时DTV传统头端与交互业务系统相对独立。 Time shift [0009] When shifting services, broadcast services provided by a conventional DTV at the head end to provide a basis for the DTV, the service system providing interactive live / / taped service, when the user uses the time-shifted service, interactive services need to switch to the system live, then time-shifted, and at this time the head end of the conventional DTV system is relatively independent interactive service.

[0010] 然而本发明的发明人发现,上述方式中,交互业务系统虽然不必提供所有频道的直播业务,可以降低IP网的建设成本,但用户不能从DTV直播频道直接切换到时移,业务体 [0010] However, the present inventors found that the above-described embodiment, the interactive service system, although not necessary to provide live broadcast services of all channels, can reduce the construction cost of the IP network, but the user can not be moved when the DTV live channel switch directly to the business body

验非常差。 Very poor experience. 发明内容 SUMMARY

[0011] 本发明实施方式要解决的主要技术问题是提供一种数字电视时移方法、系统及机顶盒,使得在接收数字电视时能使用时移服务。 [0011] Embodiment of the present invention is to shift the main technical problem is a method, system, and a set top box providing a digital television, so that the shift can be used when the service when receiving a digital television.

[0012] 为解决上述技术问题,本发明的实施方式提供了一种数字电视时移方法,包括以下步骤: When shift method [0012] To solve the above problems, embodiments of the present invention provides a digital television, comprising the steps of:

[0013] 接收数字电视直播频道的时移请求; [0013] shift request receiving digital television broadcast channel;

[0014] 从数字电视直播频道与该频道的时移服务的对应关系中查找与所请求的直播频道对应的时移服务; [0014] When the corresponding relationship between channels with the digital broadcast television channels and services from the mobile service looks shifted when live channel corresponding to the request;

[0015] 通过IP通道输出该时移服务提供的该直播频道的时移码流。 [0015] The output of the live channel service provided by the time shift frameshift stream through IP channel.

[0016] 本发明的实施方式还提供了一种数字电视时移系统,包括: Shifting system [0016] embodiment of the present invention also provides a digital television, comprising:

[0017] 存储单元,用于保存数字电视直播频道与该频道的时移服务的对应关系;查找单元,用于在在收到数字电视直播频道的时移请求时,从存储单元保存的对应关系中查找与所请求的直播频道对应的时移服务; [0017] The storage unit during storage for digital broadcast television channels with the channel shift corresponding relationship between the service; searching unit, configured to time shift request is received at the digital broadcast television channels, from the correspondence relationship stored in the storage unit Find time to the requested broadcast channel corresponding to the shift of services;

[0018] 码流输出单元,用于通过IP通道输出对应该直播频道的时移服务提供的时移码流。 [0018] The stream output unit configured to output through the IP channel should be shifted to the live channel when the service providing frameshift stream.

[0019] 本发明的实施方式还提供了一种机顶盒,包括: [0019] Embodiment of the present invention also provides a set-top box, comprising:

[0020] 存储单元,用于保存数字电视直播频道与该频道的时移服务的对应关系; [0020] The storage unit configured to store correspondence relationship between a digital broadcast television channels with the channel shift and services;

[0021] 查找单元,用于在在收到数字电视直播频道的时移请求时,从存储单元保存的对应关系中查找与所请求的直播频道对应的时移服务;码流接收单元,用于接收对应该直播频道的时移服务通过IP通道提供的时移码流。 [0021] The searching unit configured to time shift request is received at the digital broadcast television channels, lookup with live channel shift corresponding to the requested service from the correspondence relationship stored in the storage unit; code stream receiving unit, configured when live channel reception should be shifted when the service provided by IP flow passage frameshift.

[0022] 本发明实施方式与现有技术相比,主要区别及其效果在于:在收到DTV直播频道的时移请求时,从数字电视直播频道与该频道的时移服务的对应关系中查找与所请求的直播频道对应的时移服务,输出该时移服务提供的该直播频道的时移码流,从而使得用户在接收DTV时,能够使用时移服务。 [0022] Embodiment of the present invention compared to the prior art, the main differences and effects that: when a time shift request is received DTV broadcast channel, the corresponding relationship between digital television broadcast channels and the channel from the mobile services find when the live channel shift corresponding to the requested service, when the output stream shifted live channel in the time shifted service provided, so that the user upon receiving a DTV, the service time shift can be used. 且由于在使用时移服务时,无需进行直播频道的切换,使得用户能够得到良好的业务体验。 And because in the use of time-shifted service, without the need for live channel switching, enabling users to get good business experience.

附图说明 BRIEF DESCRIPTION

[0023] 图1是现有技术中实现IPTV业务的系统结构示意图; [0023] FIG. 1 is a prior art schematic diagram of a system configuration to realize IPTV service;

[0024] 图2是现有技术中DTV与IPTV结合的示意图; [0024] FIG. 2 is a schematic view of the prior art in combination with the IPTV DTV;

[0025] 图3是根据本发明第一实施方式的数字电视时移方法中涉及的元件示意图; [0025] FIG. 3 is a schematic diagram of a digital television element shifted first embodiment of the present invention relates to a process;

[0026] 图4是根据本发明第一实施方式的数字电视时移方法流程图; [0026] FIG. 4 is a flowchart of a method according to the shifted digital television of the first embodiment of the present invention;

[0027] 图5是根据本发明第三实施方式的数字电视时移系统结构图; [0027] FIG. 5 is a system configuration diagram of a shift when the digital TV to the third embodiment of the present invention;

[0028] 图6是根据本发明第四实施方式的机顶盒结构图。 [0028] FIG. 6 is a configuration diagram of a set top box according to a fourth embodiment of the present invention.

具体实施方式 Detailed ways

[0029] 为使本发明的目的、技术方案和优点更加清楚,下面将结合附图对本发明的实施方式作进一步地详细描述。 [0029] To make the objectives, technical solutions, and advantages of the present invention will become apparent in conjunction with the following drawings, embodiments of the present invention will be described in further detail.

[0030] 本发明第一实施方式涉及一种数字电视时移方法,该方法中涉及的元件如图3所示。 [0030] shift when a first embodiment of the invention relates to a method of digital television, the elements involved in the process as shown in FIG. 图3中,左半部分的元件主要进行数字电视直播,与现有技术相同,右半部分元件主要完成数字电视的时移,使得在无需从IP网络接收直播的情况下,能够在数字电视上实现时移。 In FIG. 3, the left half portion of the main element of digital television broadcast, the same as the prior art, the right half of the main elements of the digital television shift is completed, in the case where such live without receiving from the IP network, the digital TV can be time shift to achieve.

[0031] 具体流程如图4所示,在步骤401中,编码器2从数字电视直播源接收直播频道的码流,该直播源可以是卫星接收机、DVD或复用器输出的直播频道信号。 [0031] The specific process shown in Figure 4, in step 401, encoder 2 receives the stream from the digital broadcast television channel broadcast source, the source may be a broadcast channel signal broadcast satellite receivers, DVD, or the output of the multiplexer .

[0032] 在步骤402中,编码器2对直播源输出的直播码流进行编码,编码包括格式转换、 码率变换、接口适配等,将直播信号转为适合VOD服务器录制与STB点播的格式与速率。 [0032] In step 402, encoder two pairs of live broadcast stream output from the source encoding, including the encoding format conversion, rate conversion, interface adapter and the like, the broadcast signal into a format suitable for recording a VOD server and the STB demand and rates.

[0033] 在步骤403中,编码器2将编码后的直播码流通过IP通道发送给VOD服务器。 [0033] In step 403, the live encoder 2 encoded code stream to the VOD server via IP channel.

[0034] 在步骤404中,BMS创建与直播频道对应的时移频道,并通知VOD服务器该时移频道的相关信息,包括编码器2输出的IP地址、端口号、录制时长等信息。 [0034] In step 404, BMS-shifted channel to create a time corresponding to the live channel, and notifies the VOD server shift when the channel related information, IP addresses, including the output of the encoder 2, the port number, and other information recording length.

[0035] 在步骤405中,时移频道创建成功,BMS随时可以向VOD发送指令,要求VOD服务器启动时移频道的录制,即创建时移服务。 [0035] In step 405, the time-shift channel is successfully created, BMS can always send a command to the VOD, VOD server requires shift recording channels at startup, when the service is created shift.

[0036] 在步骤406中,VOD服务器收到BMS的指令后,将从编码器2接收到的码流录制到本地存储。 [0036] In step 406, the VOD server BMS receives instructions from the encoder 2 receives the code stream recorded to the local storage.

[0037] 在步骤407中,BMS上建立提供时移服务的直播频道列表,以及每个直播频道与该频道的时移服务的标识的对应关系,如下所示。 [0037] In step 407, establishing a correspondence relationship shifted service providing live channel list on the BMS, and identifying each broadcast channel when the channel is shifted and services, as shown below. 其中,直播频道一般可以用频点、Service ID(直播服务标识)等信息描述,时移服务标识一般可以用URL描述。 Wherein the broadcast channel frequencies can be used generally, Service ID (identification broadcast service) and other information describing the time-shift service identifier can be generally described by the URL.

[0038] 频点1,Service IDl,时移服务标识1 [0038] frequency 1, Service IDl, time-shifted service marks 1

[0039] 频点2,Service ID2,时移服务标识2 [0039] frequency 2, Service ID2, time shifted service identifier 2

[0040] 需要说明的是,当前许多区域采用了分前端技术,即在该区域的DTV传统头端中建设一个分前端,通过该分前端改变直播频道的频点、krvice ID等信息,通过改变后的Service ID提供直播。 [0040] Incidentally, many of the current region using the sub-front technique, i.e. the construction of a sub-front in the DTV conventional head end of the region, to change the frequency live channel through which the sub-front information krvice ID and the like, by changing the after the Service ID provides live. 在此情况下,BMS上还需要为这些区域分别建立对应关系,该对应关系中包括相应的区域标识、该区域对应的直播频道的频点、Service ID和时移服务标识,如下所示。 In this case, the BMS also need to establish corresponding relationship to these regions, the correspondence relationship comprising a respective area identifier, the frequency region corresponding to the live channel, Service ID identifies the service and time-shifted, as shown below.

[0041] 区域IDl :频点1,Service IDl,时移服务标识1 [0041] zone IDl: frequency 1, Service IDl, a time shift service identifier

[0042] 区域IDl :频点2,Service ID2,时移服务标识2 [0042] zone IDl: frequency point 2, Service ID2, time shifted service identifier 2

[0043] 区域ID2 :频点3,Service ID3,时移服务标识1 [0043] The region ID2: frequency 3, Service ID3, a time shift service identifier

[0044] 区域ID2 :频点4,Service ID4,时移服务标识2 [0044] region ID2: frequency point 4, Service ID4, time shifted service identifier 2

[0045] 举例而言,假设直播频道1对应时移服务1,直播频道2对应时移服务2,在未使用分前端改变直播频道的频点之前,直播频道ι对应的频点为100,Service ID为111 ;直播频道2对应的频点为300,Service ID为333,则对于未使用分前端对直播频道的频点进行改变的区域,统一建立如下的对应关系: [0045] For example, assuming shifted service 1 corresponds to a live channel, the mobile service live channel 2 corresponding to 2, before changing the frequency is not used sub-front live channel, broadcast channel frequency corresponding to ι 100, Service ID 111; live channel frequency corresponding to 2 to 300, Service ID 333, to the distal end of an unused area division of the frequency change of the live channel, establish the following correspondence between the unity:

[0046] 100,111,时移服务标识1 [0046] 100, 111, a time shift service identifier

[0047] 300,333,时移服务标识2 [0047] 300,333, a time shift service identifier 2

[0048] 假设区域1 (对应区域IDl)使用分前端对直播频道1的播放频点进行了改变,改为120,Service ID改为222 ;并将直播频道2的播放频点改为320,Service ID改为444 ; 则需要为该区域1建立独立的对应关系: [0048] Suppose a region (region corresponding to IDl) using the sub-front of a live channel frequency player 1 has been changed to 120, Service ID to 222; and playing live channel frequency of 2 to 320, Service ID to 444; the need for an independent correspondence between the region 1:

[0049] 区域IDl : 120,222,时移服务标识1 [0049] The region IDl: 120,222, a time shift service identifier 1

[0050] 区域IDl =320,444,时移服务标识2 [0050] region IDl = 320,444, time shifted service identifier 2

[0051] 在步骤408中,BMS将提供时移服务的直播频道列表、及各直播频道与时移服务标识的对应关系传送到EPG上。 [0051] At step 408, BMS will provide a list of time-shifted broadcast channels and services, the time-shift live channel and each correspondence relationship between the service identifier transmitted to the EPG.

[0052] STB开机后,进入步骤409和步骤410。 After [0052] STB power, and step 410 proceeds to step 409. 其中,步骤409为可选步骤。 Wherein, the step 409 is an optional step.

[0053] 在步骤409中,STB通过DTV传统头端接收直播频道,与现有技术相同,在此不再详述。 [0053] In step 409, STB receives the head end by conventional DTV broadcast channel, the same as the prior art, not described in detail herein.

[0054] 在步骤410中,STB向EPG请求获取提供时移服务的直播频道列表、及直播频道与相应的时移服务标识的对应关系。 [0054] In step 410, STB shift request to obtain a list of EPG service providing live channel, and the broadcast channel to the corresponding shift corresponding relationship between service identification.

[0055] 在步骤411中,EPG根据发起请求的STB的相关标识,如STB登录EPG时的VOD业务帐号或STB的ID,查找STB所属区域,并将该区域中提供时移服务的直播频道列表、及对应关系下发给STB。 [0055] In step 411, according to the relevant EPG initiation request identifies the STB, the STB such as the VOD service account and the login ID of the EPG or STB, STB to find relevant area, and a list of services when shifted providing the live channel region STB issued under, and correspondence.

[0056] 在步骤412中,STB收到来自用户的时移请求。 [0056] In step 412, STB receives the move request from the user. 为了避免用户请求对不支持时移服务的直播频道进行时移,STB可以在用户观看直播频道时,根据当前直播频道所处频点、 Service ID查找提供时移服务的直播频道列表,获知当前的直播频道是否提供时移服务, 并可以向用户提示相关信息,便于用户正确使用时移业务;或者,STB还可以在收到来自用户的时移请求时,查找提供时移服务的直播频道列表,获知当前直播频道是否提供时移服务,如果确定当前直播频道不支持时移服务,则拒绝用户的时移请求(如显示操作无效等),避免无效请求对交互业务系统产生负担。 In order to avoid a user request for time-shifting live channel does not support shifting services performed, STB can be viewed at the user when the live channel, which according to the current live channel frequency, Service ID lookup list when shifting services to provide live channels, informed the current live channels whether shift service, and may prompt the relevant information to the user, easy to shift the business user the proper use; or, STB also receives from the user at the time of shift requests, find a list of shifting services providing live channels, when informed of the current shift service live channels whether, if it is determined shift service does not support the current live channel, the user's request is denied shift (such as display invalid operation, etc.) to avoid generating invalid request burden of interactive services system.

[0057] 在步骤413中,用户请求进行时移的直播频道支持时移,即在提供时移服务的直播频道列表中,STB可以根据当前直播频道所处频点、Service ID在对应关系中找到该直播频道的时移服务标识。 When [0057] In step 413, the user requests the time shift live channel support for shift, i.e., when the broadcast channel list of the service providing shift, which may be the STB according to the current frequency point live channel, Service ID in the correspondence found in when the live channel shift service marks.

[0058] 在步骤414中,STB使用时移服务标识向EPG请求时移服务授权。 [0058] In step 414, using the time-shift shift STB authorized service request to the service identifier when the EPG.

[0059] 在步骤415中,EPG向BMS请求该STB的时移服务授权验证。 When [0059] In step 415, EPG requests the STB to the shift BMS service authorization verification.

[0060] 在步骤416中,验证通过后,STB将从EPG获取提供该时移服务的VOD服务器及该服务器对外提供时移服务的媒体标识。 After [0060] In step 416, verified by, STB from the EPG acquisition provides media identification when the VOD server and time-shifted services that the server provides a shift of foreign services.

[0061] 在步骤417中,STB使用所获取的媒体标识向对应的VOD服务器请求时移服务。 [0061] In step 417, when the STB using the acquired media ID to request the VOD server corresponding to the service shift.

[0062] 在步骤418中,VOD服务器向STB提供时移服务,可以通过IP网络直接向STB提供时移码流,也可以在交互业务系统设置一个IP正交振幅调制(Quadrature Amplitude Modulation,简称“QAM”),通过该IP QAM设备从Cable (电缆)网络向STB提供时移码流。 [0062] In step 418, when the VOD server provides service to the STB shift, shifting stream may be provided directly to the STB when the IP network, IP may be provided a quadrature amplitude modulation (Quadrature Amplitude Modulation in interactive services system, referred to as " QAM "), move through the stream supplied from the device IP QAM cable (cable) network to the STB.

[0063] 在步骤419中,STB对直播码流定帧后,切换到时移码流。 [0063] In step 419, STB after the live broadcast code stream of a given frame, the switching time to shift the code stream. 为避免在直播向时移切换过程中,发生因时移码流还未到达STB而导致黑屏或马赛克的情况,STB在收到并解出时移码流的第一个I帧前,仍然持续播放在直播频道收到的I帧。 To avoid handover procedure when shifting to live, time shift occurs due to the stream STB result has not reached the black screen or a mosaic, before the first I-frame shifted stream STB upon receipt and solving, persists I play live channel frame received.

[0064] 在步骤420中,根据用户向STB发送的指示,进行时移电视的暂停、快退、快进、以及退出时移,其中快进可以是按倍速快进,也可以是一键跳转到头。 [0064] In step 420, according to an instruction sent by the user to the STB, shifted TV when to pause, rewind, fast forward, and the shift exit, wherein the fast forward can be press times the normal speed, and may be a key to jump go to the head. 当快进到头追到直播时,即在该时移服务输出的时移码流快进到该时移服务录制的最新码流时,STB会退出时移服务,切换到直播频道。 When the fast-forward to the end to catch live, time-shifted services that is output at the time of shift-stream fast-forward to the time shift service of the latest stream recording, the STB will exit when the shift service, switch to the live channel. 或者,当用户向STB发送退出时移的指示时,STB也会退出时移服务,切换到直播频道。 Alternatively, when a user sends instructions to exit shift to STB, STB will shift when exiting the service, switching to the live channel.

[0065] 可见,在本实施方式中,通过在收到DTV直播频道的时移请求时,从DTV直播频道与该频道的时移服务的对应关系中查找与所请求的直播频道对应的时移服务,输出该时移服务提供的该直播频道的时移码流,从而使得用户在接收DTV时,能够使用时移服务。 [0065] visible, in the present embodiment, the time shift request is received at the DTV broadcast channel, the corresponding relationship when the DTV broadcast channel from a mobile channel in the lookup service when live channel shift corresponding to the requested when the service, the time shift output provided by the service live channel frameshift stream, so that the user upon receiving a DTV, the service time shift can be used. 且由于在使用时移服务时,无需进行直播频道的切换,使得用户能够得到良好的业务体验。 And because in the use of time-shifted service, without the need for live channel switching, enabling users to get good business experience. [0066] 由于本实施方式可以融合DTV直播通道与IP交互通道,共同提供直播业务与时移业务,从而合理利用网络资源,降低系统建设整体成本。 [0066] Since the present embodiment can be integrated DTV broadcast channels and interactive IP channel, providing live together business and business-shifting, so the rational use of network resources, reduce the overall cost of system construction.

[0067] 本发明第二实施方式同样涉及一种数字电视时移方法,与第一实施方式大致相同,其区别在于,在第一实施方式中,在BMS上配置直播频道与该频道的时移服务的对应关系,并通过IP通道将该对应关系发送给STB,在本实施方式中,在DTV传统头端配置直播频道与该频道的时移服务的对应关系,并通过直播通道将对应关系下发到STB。 [0067] The method of shifting the second embodiment of the present invention also relates to a digital television, and substantially the same manner as the first embodiment, except that, in the first embodiment, the configuration of the channel when the broadcast channel to shift the BMS service correspondence relationship, and transmits the IP correspondence relationship between the channel to the STB, in the present embodiment, the configuration corresponding relationship with the channel when a channel broadcast service in the conventional shift a DTV head end, and by the correspondence relationship between the broadcast channel sent to the STB.

[0068] 需要说明的是,在第一或第二实施方式中,将DTV直播频道与该频道的时移服务的对应关系发送到STB,由STB根据用户的时移请求,从该对应关系中查找与所请求的直播频道对应的时移服务;而在实际应用中,该对应关系也可以不下发给STB,直接保存在交互业务系统中,STB收到用户的时移请求后,将该请求发送给交互业务系统,由交互业务系统(可以是交互业务系统中的BMS、EGP、或VOD服务器中任一元件)根据用户的时移请求,从该对应关系中查找与所请求的直播频道对应的时移服务。 [0068] Incidentally, in the first embodiment or the second embodiment, the DTV transmission channel corresponding relation with the channel when the broadcast service to STB shift, shift by the STB in accordance with the user's request, from the correspondence relationship Find live channel when the corresponding shift of the requested service; and in practical application, the correspondence can be sent to no less than STB, interactive services directly stored in the system, after the shift request, the STB receives the user's request sent to the interactive service system, the interactive service system (which may be interactive service system BMS, EGP, or the VOD server of any one element) shift request according to the user's check corresponding to the broadcast channel requested from the correspondence relationship the time-shifted services.

[0069] 本发明第三实施方式涉及一种数字电视时移系统,如图5所示,包括:存储单元, 用于保存数字电视直播频道与该频道的时移服务的对应关系;查找单元,用于在在收到数字电视直播频道的时移请求时,从存储单元保存的对应关系中查找与所请求的直播频道对应的时移服务;码流输出单元,用于输出对应该直播频道的时移服务提供的时移码流。 [0069] The third embodiment of the present invention shift time relates to a digital television system, shown in Figure 5, comprising: a storage unit configured to save a correspondence relationship when the digital broadcast television channels with the channel shift and services; searching unit, when used in a digital television broadcast channel shift request is received, stored in the storage unit to find from the correspondence relationship when live channel shift corresponding to the requested service; stream output means for outputting to be live channel when time-shifted services provided frameshift stream.

[0070] 该存储单元保存的对应关系中至少包括以下内容:直播频道的频点、直播服务标识(Service ID)、时移服务标识;查找单元根据时移请求中包括的直播频道的频点和Service ID,查找与所请求的直播频道对应的时移服务。 [0070] The correspondence relationship memory cell stored in at least include the following: frequency live channel, broadcast service identity (Service ID), a time shift service identifier; time shift search unit according to a request included in the frequency live channel, and service ID, when looking to the requested broadcast channel corresponding shift service.

[0071] 如果数字电视直播频道的频点或%1~^(^ ID在一个区域被改变,则存储单元为该区域保存独立的对应关系,该对应关系中还包括:区域标识;查找单元根据发送时移请求的区域、时移请求包含的直播频道的频点和krvicelD,查找与所请求的直播频道对应的时移服务。 [0071] If the frequency of digital broadcast television channels or% 1 ~ ^ (^ ID is changed in a region, the region for the memory cell separately stored correspondence relationship, the correspondence relationship further comprising: a region identification; The searching unit request time shift transmission area, when the shift request frequency channel and comprising live krvicelD, when the look-shift live channel service corresponding to the requested.

[0072] 上述各单元可以位于数字电视网络的不同元件中,也可以位于用户设备中,如存储单元和查找单元可以位于数字电视网络的BMS、EGP、或VOD服务器中任一元件中,也可以位于用户的STB中,在此不进行限定。 Different elements [0072] each unit may be located digital television network, may be located in user equipment, such as a storage unit and search unit may be located BMS digital television network, EGP, or the VOD server of any one element may be the STB user is located, and is not to be limiting.

[0073] 可见,在本实施方式中,通过在收到DTV直播频道的时移请求时,从DTV直播频道与该频道的时移服务的对应关系中查找与所请求的直播频道对应的时移服务,输出该时移服务提供的该直播频道的时移码流,从而使得用户在接收DTV时,能够使用时移服务。 [0073] visible, in the present embodiment, the time shift request is received at the DTV broadcast channel, the corresponding relationship when the DTV broadcast channel from a mobile channel in the lookup service when live channel shift corresponding to the requested when the service, the time shift output provided by the service live channel frameshift stream, so that the user upon receiving a DTV, the service time shift can be used. 且由于在使用时移服务时,无需进行直播频道的切换,使得用户能够得到良好的业务体验。 And because in the use of time-shifted service, without the need for live channel switching, enabling users to get good business experience.

[0074] 本发明第四实施方式涉及一种机顶盒,如图6所示,包括:对应关系接收单元,用于从交互业务系统接收数字电视直播频道与该频道的时移服务的对应关系;存储单元,用于保存所收到的对应关系;查找单元,用于在在收到数字电视直播频道的时移请求时,从存储单元保存的对应关系中查找与所请求的直播频道对应的时移服务;请求单元,用于向交互业务系统请求该时移服务;码流接收单元,用于从交互业务系统接收该时移服务提供的时移码流。 [0074] The fourth embodiment of the present invention relates to a set-top box, as shown in FIG. 6, comprising: a receiving unit a correspondence relationship, the correspondence relationship used when the system receives interactive services digital television channels on the channel from the mobile services; storage means for saving the received correspondence relationship; a searching unit, configured to time shift request is received at the digital broadcast television channels, to find the time-shift live channel corresponding with the requested information from the correspondence relationship stored in the storage unit services; request means for requesting the interaction service system to the time shift service; code stream receiving unit for receiving the time-shift service providing frameshift stream from the interactive service system. 通过从DTV直播频道与该频道的时移服务的对应关系中查找与所请求的直播频道对应的时移服务,使得机顶盒能够正确接收该直播频道的时移码流,从而使得用户在接收DTV时,能够正常使用时移服务。 Look through the correspondence relationship when the DTV broadcast channel to the channel from the mobile services when the broadcast channel corresponding to the requested shift service, so that the set top box can be correctly received when the live channel frameshift stream, so that the user when receiving DTV when using the normal shift service. 且由于在使用时移服务时,无需进行直播频道的切换, 使得用户能够得到良好的业务体验。 And because in the use of time-shifted service, without the need for live channel switching, enabling users to get good business experience. [0075] 该存储单元保存的对应关系中至少包括以下内容:直播频道的频点、Service ID、 时移服务标识;查找单元根据时移请求中包括的直播频道的频点和krvice ID,查找与所请求的直播频道对应的时移服务。 [0075] The corresponding relationship stored in the storage means comprises at least the following: frequency live channel, Service ID, a time shift service identifier; frequency point search unit of the transfer request comprises a live channel and krvice ID, search and when the requested service live channel corresponding to the shift.

[0076] 该机顶盒还可以包括:输出显示单元,用于输出显示对应关系中包括的允许时移的直播频道;和/或,判断单元,用于在收到数字电视直播频道的时移请求后,判断对应关系中是否包括所请求的直播频道,如果包括则指示请求单元向交互业务系统请求该直播频道的时移服务,并指示接收单元在得到所请求的时移服务的授权后,接收该时移服务提供的时移码流。 [0076] The set-top box may further comprise: an output display unit for displaying the output of a corresponding relationship comprises a time shift allows live channel; and / or, judging means for shifting request when receiving the digital broadcast television channels after determining correspondence between whether to include the requested broadcast channel, if including the indication request means a request to the interactive service system of the live channel shift service, and instructs the license receiving unit when obtaining the requested shift service, to receive the when time-shifted services provided frameshift stream.

[0077] 综上所述,在本发明的实施方式中,在收到DTV直播频道的时移请求时,从DTV直播频道与该频道的时移服务的对应关系中查找与所请求的直播频道对应的时移服务,输出该时移服务提供的该直播频道的时移码流,从而使得用户在接收DTV时,能够使用时移服务。 [0077] As described above, in the embodiment of the present invention, when receiving the DTV live channel shift request, the corresponding relationship when the DTV broadcast channel from a mobile channel with the broadcast service looks up the requested channel when the corresponding service shift, shifting the output of the live channel stream when the time shift provided by the service, so that the user upon receiving a DTV, the service time shift can be used. 且由于在使用时移服务时,无需进行直播频道的切换,使得用户能够得到良好的业务体验。 And because in the use of time-shifted service, without the need for live channel switching, enabling users to get good business experience.

[0078] 由于本发明实施方式可以融合DTV直播通道与IP交互通道,共同提供直播业务与时移业务,从而合理利用网络资源,降低系统建设整体成本。 [0078] Since the embodiment of the present invention may be fused with a DTV broadcast channel IP interaction channel, broadcast services provide common services to the time shift, so that reasonable use of network resources, reduce the overall cost of system construction.

[0079] 该对应关系至少包括:直播频道的频点、直播服务标识、时移服务标识。 [0079] The correspondence relationship comprising at least: frequency live channel, broadcast service identifier, a time shift service identification. 通过直播频道的频点和直播服务标识能够唯一标识一个直播频道,进而查找对应的时移服务,十分方便,且所保存的信息量较小。 When the small channel that can uniquely identify a live broadcast channels by frequency and broadcast service marks, and then find the corresponding shift service, very convenient, and the stored information.

[0080] 如果一个区域的DTV传统头端有分前端,即数字电视直播频道的频点或直播服务标识在该区域被改变,则为该区域建立独立的对应关系;该对应关系还包括:区域标识。 [0080] If the head of a conventional DTV watched distal end region, i.e. frequency channels of digital television broadcast or broadcast service to the identified region is changed, the corresponding relationship was established independent of the region; the correspondence further comprises: area identity. 通过区域标识、直播频道的频点和直播服务标识能够唯一标识一个直播频道,进而查找对应的时移服务,从而能够更好地满足不同区域的需要。 Through the area identification, and channel frequency live broadcast service identifier that uniquely identifies a live channel, and thus find the corresponding shift service, thereby better meet the needs of different regions.

[0081] 机顶盒在收到时移码流并解码出时移码流的第一个I帧之前,持续播放直播频道的I帧,从而避免从DTV直播频道切换到时移过程中出现黑屏或马赛克,改善用户的业务体验。 Before [0081] I frame shifting the first stream when the stream STB frameshift received and decoded at the time, live channel continues to play an I frame, thereby avoiding the process of shifting from the DTV broadcast channel switching to a black screen or a mosaic improve the user's service experience.

[0082] 虽然通过参照本发明的某些优选实施方式,已经对本发明进行了图示和描述,但本领域的普通技术人员应该明白,可以在形式上和细节上对其作各种改变,而不偏离本发明的精神和范围。 [0082] While the invention has been shown and described with reference to certain preferred embodiments of the present invention, but those of ordinary skill in the art should be understood that various changes may be made thereto in form and details without departing from the spirit and scope of the invention.

Claims (15)

1. 一种数字电视时移方法,其特征在于,包括以下步骤:接收数字电视直播频道的时移请求;从数字电视直播频道与该频道的时移服务的对应关系中查找与所请求的直播频道对应的时移服务;通过IP通道输出该时移服务提供的该直播频道的时移码流。 1. A method of time-shifted digital television, characterized by comprising the steps of: when receiving a digital television broadcast channel shift request; correspondence relationship digital television broadcast channels and the channel from the mobile broadcast service looks up the requested a channel shift corresponding to the service; live channel output of the service provided by the time shift frameshift stream through IP channel.
2.根据权利要求1所述的数字电视时移方法,其特征在于,所述查找步骤之前,还包括以下步骤:建立数字电视直播频道与该频道的时移服务的对应关系。 2. The method of time-shift of the digital television according to claim 1, wherein, prior to said step of searching further comprises the step of: establishing a corresponding relationship with the digital television broadcast channels and services of the shift channel.
3.根据权利要求1所述的数字电视时移方法,其特征在于,所述数字电视直播频道与该频道的时移服务的对应关系至少包括以下内容:直播频道的频点、和直播服务标识、和时移服务标识。 The digital television when shift method according to claim 1, wherein the correspondence relation when the digital broadcast television channels with the channel shift service comprises at least the following: frequency live channel, and broadcast service identifier , and time-shifted service marks.
4.根据权利要求3所述的数字电视时移方法,其特征在于,所述时移请求中包括所述直播频道的频点和直播服务标识;所述查找的步骤中,根据所述直播频道的频点和直播服务标识查找所述与所请求的直播频道对应的时移服务。 According to claim 4. A method of shifting the digital television according to claim 3, characterized in that the frequency shift request includes the broadcast channel and the broadcast service identifier when; in the lookup step according to the live channel the broadcast frequency and searching for the service identifier and service time shifted broadcast channel corresponding to the request.
5.根据权利要求2所述的数字电视时移方法,其特征在于,如果数字电视直播频道的频点或直播服务标识在一个区域被改变,则所述建立数字电视直播频道与该频道的时移服务的对应关系的步骤中,包括以下子步骤:建立对应该区域的数字电视直播频道与该频道的时移服务的对应关系,该对应关系至少包括以下内容:区域标识、和直播频道的频点、和直播服务标识、和时移服务标识。 5. The digital TV according to claim 2 shift method, wherein, if the frequency of the digital TV broadcast channels or broadcast service is changed in a region identification, digital television broadcast channels and the channel is established the step correspondence between the shift of services, including the sub-steps of: establishing a corresponding relationship to be shifted services digital live television channels and the channel region, the correspondence includes at least the following: regional identity, frequency and broadcast channels. point, and broadcast service marks, service marks, and time-shifted.
6.根据权利要求5所述的数字电视时移方法,其特征在于,所述时移请求中包括所述直播频道的频点和直播服务标识;所述查找的步骤中,根据发送所述时移请求的区域、所述时移请求包含的直播频道的频点和直播服务标识,查找所述与所请求的直播频道对应的时移服务。 6. The digital television of claim 5, wherein the time-shift method, wherein, when said request comprises shifting frequency of the live channel and broadcast service identifier; in the lookup step, according to the transmission when the shifting region request, the time-frequency shift request and contains live video service channel identifier, the lookup live channel to the requested service corresponding to the shift.
7.根据权利要求1所述的数字电视时移方法,其特征在于,所述输出该时移服务提供的该直播频道的时移码流的步骤之后,还包括以下步骤:机顶盒在收到所述时移码流并解码出所述时移码流的第一个I帧之前,持续播放所述直播频道的I帧。 After the digital television according to claim 1, the time shift method, wherein, when the output of the time shift provided by the service live channel stream shift step, further comprising the step of: receipt of the set top box before stream when said shift and decodes the first I-frame of the time shift stream, continuous playback of the I-frame live channel.
8.根据权利要求1所述的数字电视时移方法,其特征在于,还包括以下步骤:在所述时移服务输出的时移码流快进到该时移服务录制的最新码流时,将所述时移服务切换回所对应的直播频道。 8. The method of time-shifted digital television as claimed in claim 1, characterized by further comprising the step of: a service shift output stream shifted to the shift fast-forward service stream recording the latest when the time, move back to the service switching channel corresponding to the broadcast time.
9.根据权利要求1至8中任一项所述的数字电视时移方法,其特征在于,还包括以下步骤:将所述对应关系下发到机顶盒,由机顶盒输出显示所述对应关系中包括的允许时移的直播频道;或者将所述对应关系下发到机顶盒,所述机顶盒在收到所述数字电视直播频道的时移请求后,如果所述对应关系中不包括所请求的直播频道,则拒绝所述时移请求。 The method shifted digital television as claimed in any one of claims 1 to 8, characterized in that, further comprising the step of: the set-top box will be sent to the corresponding relationship, the output displayed by the set top box includes the corresponding relationship the time shift allows live channel; or the set-top box will be sent to the correspondence relation, when the set top box after the digital broadcast television channel shift request is received, if the correspondence relation does not comprise live channel requested shifting request, rejecting the time.
10. 一种数字电视时移系统,其特征在于,包括:存储单元,用于保存数字电视直播频道与该频道的时移服务的对应关系;查找单元,用于在在收到数字电视直播频道的时移请求时,从所述存储单元保存的对应关系中查找与所请求的直播频道对应的时移服务;码流输出单元,用于通过IP通道输出所述对应该直播频道的时移服务提供的时移码流。 10. A shifted digital television system, characterized by comprising: a storage unit configured to save a correspondence relationship when the digital broadcast television channels with the channel shift and services; searching unit, configured to receive the digital television broadcast channels when a time shift request, look when live channel shift corresponding to the requested service from the correspondence relationship stored in the storage unit; stream output means for displacing the service through the IP output channel to be live channel providing frameshift stream.
11.根据权利要求10所述的数字电视时移系统,其特征在于,所述存储单元保存的对应关系中至少包括以下内容:直播频道的频点、和直播服务标识、和时移服务标识;所述查找单元根据所述时移请求中包括的直播频道的频点和直播服务标识,查找所述与所请求的直播频道对应的时移服务。 11. The digital television as claimed in claim 10, said shifting system, wherein, the correspondence relationship stored in said storage means comprises at least the following: frequency live channel, and broadcast service identifier, service identifier, and when shifting; the search unit according to the frequency shift when a request included in the broadcast channel and the broadcast service identifier, a lookup to the requested broadcast service corresponding to the channel shift.
12.根据权利要求11所述的数字电视时移系统,其特征在于,如果数字电视直播频道的频点或直播服务标识在一个区域被改变,则所述存储单元为该区域保存独立的对应关系,为该区域保存的独立的对应关系中还包括:区域标识;所述查找单元根据发送所述时移请求的区域、所述时移请求包含的直播频道的频点和直播服务标识,查找所述与所请求的直播频道对应的时移服务。 The correspondence relationship according to claim 11, wherein the shifted digital television system, wherein, if the frequency of the digital TV broadcast channels or broadcast service identifier is changed in a region, the storage unit for the separate storage area , for the corresponding relationship between the independent storage region further comprises: identifying regions; the regions lookup unit according to the transmission time shift request, the request frequency shift included in the live channel, and the broadcast service identifier when the lookup when said channel to the requested broadcast service corresponding to the shift.
13. —种机顶盒,其特征在于,包括:存储单元,用于保存数字电视直播频道与该频道的时移服务的对应关系; 查找单元,用于在在收到数字电视直播频道的时移请求时,从所述存储单元保存的对应关系中查找与所请求的直播频道对应的时移服务;码流接收单元,用于接收所述对应该直播频道的时移服务通过IP通道提供的时移码流。 13. - kind of a set top box, wherein, comprising: a storage unit configured to save a correspondence relationship when the digital broadcast television channels with the channel shift and services; searching unit, configured to receive a request when shifting the digital television broadcast channels. when, Find the corresponding relationship stored in the storage unit when live channel shift corresponding to the requested service; code stream receiving unit, for receiving said pair when shifting live channel service should be provided through the IP channel shift stream.
14.根据权利要求13所述的机顶盒,其特征在于,所述存储单元保存的对应关系中至少包括以下内容:直播频道的频点、和直播服务标识、和时移服务标识;所述查找单元根据所述时移请求中包括的直播频道的频点和直播服务标识,查找所述与所请求的直播频道对应的时移服务。 14. The top box as claimed in claim 13, wherein the correspondence relationship stored in said storage means comprises at least the following: frequency live channel, and broadcast service identifier, service identifier, and a time shift; the searching unit the frequency shift upon a request included in the broadcast channel and a broadcast service identifier, a lookup to the requested broadcast service corresponding to the channel shift.
15.根据权利要求13所述的机顶盒,其特征在于,还包括: 对应关系接收单元,用于从交互业务系统接收所述对应关系;输出显示单元,用于输出显示所述对应关系中包括的允许时移的直播频道;和/或判断单元,用于在收到所述数字电视直播频道的时移请求后,判断所述对应关系中是否包括所请求的直播频道,如果包括则指示所述接收单元接收对应所述直播频道的时移服务提供的时移码流。 15. The top box as claimed in claim 13, characterized in that, further comprising: a correspondence relationship receiving unit for receiving interactive service system from said corresponding relationship; an output display unit for displaying the output of the corresponding relationship comprises allow time-shift live channel; and / or determination means for, after said digital broadcast television channel shift request is received, the determination whether the correspondence relation including live channel requested, if the indicating comprising when the receiving unit receives a corresponding shift of service providing live channel frameshift stream.
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