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VeröffentlichungsnummerCN101453652 B
PublikationstypErteilung
AnmeldenummerCN 200710194586
Veröffentlichungsdatum1. Mai 2013
Eingetragen5. Dez. 2007
Prioritätsdatum5. Dez. 2007
Auch veröffentlicht unterCN101453652A
Veröffentlichungsnummer200710194586.X, CN 101453652 B, CN 101453652B, CN 200710194586, CN-B-101453652, CN101453652 B, CN101453652B, CN200710194586, CN200710194586.X
Erfinder吕越峰, 藤井由纪夫, 长屋茂喜
Antragsteller株式会社日立制作所
Zitat exportierenBiBTeX, EndNote, RefMan
Externe Links:  SIPO, Espacenet
Program guiding information generating device and television receiver
CN 101453652 B
Zusammenfassung  übersetzt aus folgender Sprache: Chinesisch
本发明涉及一种导视信息生成设备及电视接收装置,该导视信息生成设备包括:解包器,将数据包解包成电视节目复用流;解复用器,从所述电视节目复用流中解复用视频流和频道信息;频道信息控制器,根据所述频道信息生成导视频道信息;帧选择器,从所述视频流中选择多个帧;复用器,将所述选择的帧和所述导视频道信息复用为导视频道的信息流;打包器,将所述导视频道的信息流打包为附有导视信息的数据包。 The present invention relates to an information generating apparatus and guides the television receiving apparatus, which guides the information generating apparatus comprising: a depacketizer, unpacks the packet multiplexed stream into a television program; demultiplexer, from the television program complex with a stream demultiplexing the video stream and channel information; information channel controller, according to the channel information generation guides channel information; frame selection means for selecting a plurality of frames from the video stream; multiplexer, the The guides and the frame selection channel information multiplexing for traffic channel guides; packer, the channel guides the flow of information packaged with guides for information packets.
Ansprüche(14)  übersetzt aus folgender Sprache: Chinesisch
1.一种导视信息生成设备,其特征在于:包括解包器,将数据包解包成电视节目复用流; 解复用器,从所述电视节目复用流中解复用视频流和频道信息; 频道信息控制器,根据所述频道信息生成导视频道信息; 帧选择器,从所述视频流中选择多个帧内编码帧; 复用器,将所述选择的帧和所述导视频道信息复用为导视频道的信息流; 打包器,将所述导视频道的信息流打包为附有导视信息的数据包; 该导视信息生成设备置于发送端和接收端之间。 An information generating apparatus guides, characterized in that: comprising unpacker, unpack the packet multiplexed stream into a television program; demultiplexer, multiplexing the video stream from the video stream demultiplexing and channel information; control channel information, the channel information is generated based on the channel information guides; frame selection means for selecting from said plurality of intra-coded video stream frames; multiplexer, the selection of the frame and the reference guides multiplex channel information channels for the flow of information guides; packer, the flow of information packed into the channel guides guides with information packets; the guides information generating unit on the transmitter and receiver between the ends.
2.如权利要求1所述的导视信息生成设备,其特征在于: 所述帧选择器,从所述视频流中选择规定的各个频道中的I帧,并输出给所述复用器。 2. The guides information generating apparatus according to claim 1, wherein: said frame selection means for selecting from the video stream as specified in the respective channels I frame, and outputs it to the multiplexer.
3.如权利要求1所述的导视信息生成设备,其特征在于: 所述频道信息控制器控制所述复用器,对所述被选择的多个帧进行排列,并将重新排列后的多个帧和所述导视频道信息复用为信息流。 3. The guides information generating apparatus according to claim, wherein: the channel information the controller controls the multiplexer, to the selected plurality of frames arranged and rearranged a plurality of frames and said multiplexed channel information guides for information flow.
4.如权利要求1〜3中任何一项所述的导视信息生成设备,其特征在于: 所述打包器将所述复用器复用后的所述导视频道的信息流打包为所述附有导视信息的数据包。 The guides 1~3 any information generating apparatus according to one of the preceding claims, characterized in that: said packer will multiplexer multiplexing the information stream after the channel guides for the package reference guides with information packets.
5.如权利要求1〜3中任何一项所述的导视信息生成设备,其特征在于: 所述打包器将由所述解包器解包后的所述电视节目复用流和所述复用器复用后的所述导视频道的信息流一起打包为所述附有导视信息的数据包。 5. 1~3 guides any information generating apparatus according to one of the preceding claims, characterized in that: said packer by the depacketizer unpacked the television program and the multiplexed stream multiplexed Appliances multiplexed stream the channel guides packaged together with guides for the information packets.
6.如权利要求1所述的导视信息生成设备,其特征在于: 还具有码率控制器,根据所述被选择的当前的帧计算导视频道的码率增加值,并将所述码率增加值与当前的可用带宽进行比较, 在所述码率增加值小于可用带宽时,将所述被选择的当前的帧复用到所述导视频道的息流中, 在所述码率增加值大于可用带宽时,丢弃所述被选择的当前的帧。 6. The guides information generating apparatus according to claim 1, wherein: the controller further having a code rate, the increase rate calculated based on the current value of the channel guides said selected frame, and said code increased rate value and compares the current available bandwidth, the bit rate increases when the value is less than the available bandwidth, the current frame is multiplexed into the selected channel of information flow in the guides, at the rate When the added value is greater than the available bandwidth, discards the current frame is said selected.
7.如权利要求1或2所述的导视信息生成设备,其特征在于: 多个所述导视信息生成设备级联, 在第一级的所述导视信息生成设备以外的所述导视信息生成设备中,设置有导视频道控制器, 所述导视频道控制器,对收到的来自上级的所述导视频道的信息流进行判断, 不对所述来自上级的所述导视频道的信息流进行变更,或者,增加或删除该导视频道的信息流中的规定频道的帧。 7. guides information generating apparatus according to claim 1 or claim 2, wherein: a plurality of said guides cascade information generating apparatus, said guide in a first stage the guides outside information generating device visual information generating apparatus, the channel controller is provided with guides, said guides channel controller, the flow of information received from the upper guides of the channel to judge, not from the higher level of the guides information flow channels to make changes, or add or delete frames that guides the flow of information in the specified channel channels.
8.如权利要求7所述的导视信息生成设备,其特征在于: 在不对所述来自上级的所述导视频道的信息流进行变更时,使所述来自上级的所述导视频道的信息流直接通过,并在所述复用器中进行复用,后由所述打包器打包发送。 8. The guides information generating apparatus according to claim 7, characterized in that: when the information does not flow from the upper channel of the guides will be changed, so that the channel from the higher level of the guides information flow directly through, and reuse the multiplexer, after sent packing by the packer.
9.如权利要求7所述的导视信息生成设备,其特征在于: 当在来自上级的所述导视频道的信息流中增加规定频道的帧的情况下,仅对所述规定的频道的帧进行选择,并由所述复用器复用到该导视频道的信息流后,由所述打包器打包发送。 9. The guides information generating apparatus according to claim 7, characterized in that: when the increase in the frame of a prescribed channel guides the flow of information in the channel from the upper case, only the predetermined channel Frame selection by the multiplexer multiplexed into the guides after the flow of information channels, sent packing by the packer.
10.如权利要求7所述的导视信息生成设备,其特征在于: 当在来自上级的所述导视频道的信息流中删除规定频道的帧的情况下,所述导视频道控制器接收由所述解包器解析的导视频道信息,从中删除规定频道,所述复用器对所述多个帧中所述规定频道以外的帧和变更后的所述导视频道信息复用为导视频道的信息流后,由所述打包器打包发送。 10. The guides information generation apparatus according to claim 7, wherein: when the predetermined channel frame is deleted in the information flow from the upper channel of the guides in the case, the channel controller receives the guides by the unpacker guides resolved channel information deleted from a predetermined channel, the multiplexer of the plurality of frames of said predetermined channel information frame and the guides outside after changing channels multiplexed into After guides the flow of information channels, sent packing by the packer.
11.如权利要求1所述的导视信息生成设备,其特征在于: 所述频道信息控制器对每个频道附加权重并添加到导视频道信息中,并由所述复用器根据所述权重对所述频道的缩略图进行排序,并复用为导视频道信息流。 11. The guides information generating apparatus according to claim 1, wherein: said channel control information for each channel and the additional weights added to the channel information in the guides, by said multiplexer according to the Weights on a thumbnail to sort the channel, and the channel multiplexing for guides the flow of information.
12.一种电视接收装置,其特征在于, 接收数字TV广播,并在该数字广播信号中包含有,由如权利要求1〜9中任何一项所述的导视信息生成设备生成的导视频道,并具有: 解调器,接收网络调制信号; 解包器,将数据包解包成电视节目复用流; 解复用器,从所述电视节目复用流中解复用视频流和频道信息; 解码器,解码视频流数据成为未压缩的图像信号,并解码完全由帧内编码帧组成的视频数据; 图像处理器,读取所述解复用器抽取的包含频道信息与时间戳关系表的段数据,找出当前收到的帧内编码帧所隶属的频道信息,对于来自所述解码器的所述导视频道的信息流中的各个频道的所述被选择的多个帧生成多个缩略图,并对所述多个缩略图进行排序, 显示单元,显示来自所述图像处理器的图像输出。 12. A television receiver apparatus, wherein the receiving digital TV broadcasting, and included in the digital broadcast signal has, 1~9 guides any information generating apparatus according to one generated by the guides claim channel, and comprising: a demodulator, the modulation signal receiving network; depacketizer, unpacks the packet multiplexed stream into a television program; demultiplexer, the television program from the multiplexed stream demultiplexing a video stream and channel information; decoder decodes the video stream data becomes uncompressed picture signal, and decodes the video data composed entirely intra-coded frame; an image processor, reading said demultiplexer comprises extracting channel information and time stamp data segment relational tables, to find out channel information belongs intra-coded frame currently received, the flow of information for a plurality of frames from the channel decoder in the guides of each channel is selected generating a plurality of thumbnails, and sorting the plurality of thumbnails, the display unit, the display image output from the image processor.
13.如权利要求12所述的电视接收装置,其特征在于: 所述图像处理器,将所述被选择的多个帧中的、与指定频道相对应的帧还原为本来的尺寸,并输出至所述显示单元。 13. A television receiver apparatus according to claim 12, wherein: said image processor, a plurality of frames of said selected, with the frame corresponding to the specified channel is reduced to the original size, and outputs to the display unit.
14.如权利要求12或13所述的电视接收装置,其特征在于: 所述图像处理器,对由所述导视频道信息流解码的、与各个频道相对应的帧进行更新。 14. A television receiver apparatus according to claim 12 or claim 13, wherein: said image processor, said guides by the channel information stream decoder, and corresponding to the respective channel frame update.
Beschreibung  übersetzt aus folgender Sprache: Chinesisch

导视信息生成设备及电视接收装置 Guides information generating apparatus and a television receiver apparatus

技术领域 FIELD

[0001] 本发明涉及数字电视,视频编码技术,传输技术,特别是在IPTV传输网络节点上对传输IP包进行处理,生成包含静止和活动图像的节目导视频道,并在接收终端中将其解码显示的技术。 [0001] The present invention relates to digital television, video coding technology, transmission technology, especially in the IPTV transmission network nodes transmit IP packets, and generates comprising still and moving images of the program guide channel, and in the receiving terminal in its decoding technology display.

背景技术 BACKGROUND

[0002] IPTV是一种基于宽带网络上的互联网协议(IP)进行信号传送的数字电视系统。 [0002] IPTV is based on the Internet Protocol (IP) broadband network on a digital television signal transmission system. 在发送端,数字化的视频、音频和其他数据信号压缩成特定的编码格式,例如MPEG-2视频,MPEG-4视频,H.264,AAC音频格式和SI等等。 In the transmitter, the digitized video, audio and other data into a particular signal compression encoding format, such as MPEG-2 Video, MPEG-4 video, H.264, AAC audio formats and SI and the like. 这些数据格式有助于降低原始信号的比特率。 These data formats help to reduce the bit rate of the original signal. 进而,他们被按照特定格式分段打包,来保持数据之间的同步性,网络性能和实现总比特率的控制。 Further, they are packed in a specific format segment, to maintain data synchronization between the network performance and to achieve control of the total bit rate. 这类打包格式包括MPEG-2TS,RTP或者RTSP包。 Such packaging formats include MPEG-2TS, RTP or RTSP packets. 最后,这些打包的数据被再次分段或打包成适合网络传输的数据包结构中,如M)P,TCP和IP。 Finally, the packed data is segmented or packed into packet structure suitable for network transmission, such as M) P, TCP and IP again. IP包是能够在不同类型的物理链接上传递的统一的数据格式。 IP packet is a unified data format can be different types of physical links on the transmission. 在接收端,以上打包的数据信号经过以上相反的顺序解包和解码,电视节目最终被播放。 At the receiving end, the above data signal through the above packed in reverse order to unpack and decode television programs eventually be played.

[0003] IPTV的一个技术上的优势就是更容易实现用户与发送端之间的互动操作,因为IP网络是双向传输网络,很自然的提供了从用户端到发送端的反向信道。 [0003] A technical advantage of IPTV is easier to achieve interactivity between the user and the transmitting side, because the IP network is bidirectional transmission network, it is naturally provided from the end of the sending user reverse channel.

[0004] 部署IPTV网络的方式是很灵活的,可以直接利用传统互联网的结构也可以为电视传送单独组网。 [0004] way to deploy IPTV networks is very flexible, you can directly use the traditional structure of the Internet can also be a separate network for television transmission. 尽管如此,网络都是由称作节点的基本单位构成的。 Nevertheless, the basic unit of the network are referred to by the node configuration. 节点可以是以下类型中的某一种:网关,路由和交换机。 Node can be certain of the following types: a gateway, routing and switching. 差异在于他们在网络中的角色和对数据包的处理过程。 The difference is that their role in the network and packet processing. 网关作为两类不同网络之间的接口,把IP包里面的负载转换成另一种形式;路由同样用于连接两类不同的网络,但它只负责确定IP包的正确传输路径的选择;交换机则是在单一网络中连接不同部分的设备,它并不对IP包的传输路径和负载做变更。 Gateway as an interface between two different networks, the IP packet inside the load into another form; the same route used to connect two different networks, but it is only responsible for determining the correct selection of the IP packet transmission path; switch is connected to different parts of the devices in a single network, it is not an IP packet transmission path and the load make changes. 本发明可以被置于网关和路由这两种类型的节点中。 The present invention may be placed in these two types of gateways and routing nodes.

[0005] 为了使观众直观的了解到正在播放的来自不同频道的电视节目内容,人们发明了导视频道。 [0005] In order to make the audience understand the intuitive live TV programs from different channels of content, people invented channel guides. 通常电视屏幕显示由许多节目的缩略图构成,排列在一起就像马赛克的形状;每一块缩略图都来自于不同的频道(图14)。 Typically the television screen is displayed by the thumbnail many programs constituted, arranged together like a mosaic shape; each piece of thumbnails from different channels (Fig. 14).

[0006] 通常,有两种方式实现导视功能。 [0006] Generally, there are two ways to achieve guides feature. 一种是在播放端生成独立的导视频道。 One is to generate independent guides channels broadcast ends. 把捕获下来的许多视频缩小后重新编排成一个新的节目频道。 Rearranged into a new program channels after the capture of many video narrowed down. 电视接收机只要像正常接收节目一样调谐到该频道,就可以播放出导视信息了。 As long as a normal television receiver is tuned to receive programs like the channel, you can play out guides the information. 另一种方法是在电视接收机中实现导视功能。 Another method is to realize a bumper functions in the television receiver. 电视接收机通过一个解调器扫描所有的需要进入导视信息的频道生成静态的导视画面,这种画面中每个频道的缩略图的捕获时间是不同的,也就是非实时的,并且在扫描两个频道时,最短的切换间隔受到等待视频帧内编码帧的影响,通常平均缩略图更新间隔约不少于1.5秒,这是很不方便的;另一种方法,通过多个解调器,解复用器和视频解码器生成实时导视活动图像画面。 The television receiver via a demodulator to scan all the required information into the guides of the channel guides to generate static images, such a thumbnail picture of each channel acquisition time is different, i.e., non-real-time, and When scanning the two channels, the shortest switching interval to wait by the impact of intra-coded frame of video, is generally less than the average update interval thumbnails for about 1.5 seconds, which is inconvenient; another method, a plurality of demodulation by , demultiplexers and video decoder to generate real-time moving picture screen guides. 导视画面中缩略图的数量决定了解调器、解复用器和视频解码器组的个数;并且由于IPTV系统中最终用户往往没有同时接收到所有频道的能力,导视信息只能包含极少数量的频道。 Guides thumbnail picture number decision demodulator, the number of multiplexer and Solutions video decoder group; and because IPTV end-user system is received while the ability often not all channels, guides only contain information pole a small number of channels. 未决专利200610127723.X是后者的一种实现。 Pending patent 200610127723.X is an implementation of the latter. 它利用接收到的节目信号生成实时多媒体EGP。 It uses the received signal to generate real-time multimedia program EGP.

[0007] 用以上两种方式实现IPTV系统的导视功能还有几个显著的不足之处。 [0007] The above two ways to achieve IPTV system guides feature several notable shortcomings. 首先,置于广播发送端的导视信息生成方法缺乏灵活性。 First, the broadcast transmitting side guides placed information generating method lacks flexibility. 如果电视广播网络拥有一个以上的提供商,用户必须接收多个导视频道,而在这些频道中切换带来不便。 If the TV broadcasting network has more than one provider, the user must receive a plurality of guides channels, these channels are switched in inconvenience. 同时,一旦生成了导视频道,它不能适应网络中不同位置上的不同的订户群,如果为了每个订户群专门生成导视频道,将大量占用发送端的频道数量。 Meanwhile, upon generating the channel guides, it can not adapt to different networks at different locations on the subscriber base, if generated specifically for each channel guides subscriber base, the number of channels occupied by a large number of the transmission side. 而且,增加的导视信息频道将占用从发送端到接收端的全程带宽,其中大部分的线路都不是直接连接接收机的。 Moreover, increasing the information channel guides will occupy the receiving end from the transmitting end to the whole bandwidth, most of the lines are not directly connected to the receiver. 另一种接收端实现的情形下,为了提供实时的多频道静止或活动画面缩略图,置于接收机中的导视功能需要额外的解调器,解复用器和视频解码器,显著增加接收机的复杂度。 Another case where the receiving end, in order to provide real-time multi-channel thumbnail still or motion pictures, the receiver is placed in the guides requires an additional demodulator, demultiplexer and the video decoder, a significant increase in receiver complexity.

发明内容 SUMMARY

[0008] 本发明的目标是弥补以上IPTV导视系统的不足。 Target [0008] The present invention is to remedy the above guides IPTV system deficiencies. 在发送端不需要任何设备和操作,在接收机中也不需要格外的解调器,解复用器和视频解码器的情况下,实现导视频道的生成和回放和级联处理。 In the sender does not require any equipment and operation, the receiver does not need extra demodulator, demultiplexer and video decoder, the realization of generation and playback and processing guides cascade channels.

[0009] 本发明的导视信息生成设备,包括:解包器,将数据包解包成电视节目复用流;解复用器,从上述电视节目复用流中解复用视频流和频道信息;频道信息控制器,根据上述频道信息生成导视频道信息;帧选择器,从上述视频流中选择多个帧;复用器,将上述选择的帧和上述导视频道信息复用为导视频道的信息流;打包器,将上述导视频道的信息流打包为附有导视信息的数据包。 [0009] GUIDE information generating apparatus of the present invention, comprising: a depacketizer, unpacks the packet multiplexed stream into a television program; demultiplexer, said television program from the multiplexed stream demultiplexing a video stream and channel information; control channel information, the channel information is generated based on the channel information guides; frame selection means for selecting a plurality of frames from said video stream; multiplexer, the guides and said frame of the selected channel information is multiplexed pilot Information streaming video channel; packer, will channel the flow of information packed into these guides guides with information packets.

[0010] 另外,本发明的导视信息生成设备,优选帧选择器,从上述视频流中选择规定的各个频道中的I帧,并输出给上述复用器。 [0010] Further, the present invention guides the information generating device, preferably a frame selection means for selecting from the video stream as specified in the respective channels I frame, and is output to the multiplexer. 优选上述频道信息控制器控制上述复用器,对上述被选择的多个帧进行排列,并将重新排列后的多个帧和上述导视频道信息复用为信息流。 Preferably, the channel information control means controls said multiplexer, said plurality of frames are arranged to be selected, and guides back a plurality of frames and said channel information is arranged after the multiplexed stream. 并且优选上述打包器将由上述解包器解包后的上述电视节目复用流和上述复用器复用后的上述导视频道的信息流一起打包为上述附有导视信息的数据包。 And preferably above the packer by said depacketizer unpacked said video program stream and said multiplexer multiplexing said guides traffic channels multiplexed packets packaged together with the above-mentioned guides information. 并优选上述打包器将上述复用器复用后的上述导视频道的信息流打包为上述附有导视信息的数据包。 And preferably, the packer will stream after said multiplexer multiplexing said channel guides packed with guides for said data packet information.

[0011] 本发明的导视信息生成设备,还可以具有码率控制器,根据上述被选择的当前的帧计算导视频道的码率增加值,并将上述码率增加值与当前的可用带宽进行比较,在上述码率增加值小于可用带宽时,将上述被选择的当前的帧复用到上述导视频道的信息流中,在上述码率增加值大于可用带宽时,丢弃上述被选择的当前的帧。 [0011] GUIDE information generating apparatus of the present invention, may also have a rate controller, the increase rate calculated based on the current value of the channel guides of said frame is selected, and the current value of said rate of increase in available bandwidth comparing, in said bit rate value is less than the available bandwidth increases, the current frame is said selected information streams multiplexed into the channel of said guides, in the above-described increase rate is greater than the available bandwidth value, discarding said selected current frame. 由此可以实现对网络带宽的控制,根据网络的可用带宽来调节导视频道的容量。 It can be realized for network bandwidth control, depending on the available bandwidth of the network to adjust the capacity of the channel guides.

[0012] 本发明的导视信息生成设备,还可以实现多个上述导视信息生成设备级联,在此情况下,在第一级的上述导视信息生成设备以外的上述导视信息生成设备中,设置有导视频道控制器,上述导视频道控制器,对收到的来自上级的上述导视频道的信息流进行判断,不对上述来自上级的上述导视频道的信息流进行变更,或者,增加或删除该导视频道的信息流中的规定频道的帧。 [0012] GUIDE information generating apparatus of the present invention, a plurality of the guides may also be realized cascade information generating apparatus, in this case, other than the first stage of said guides of said information generating apparatus information generating apparatus guides , the channel controller is provided with guides, said guides channel controller, said receiving the information flow from the upper channel guides to judge, not to the above-described information flow of said guides from the upper channel will be changed, or , add or delete frames that guides the flow of information in the specified channel channels.

[0013] 而且,在不对上述来自上级的上述导视频道的信息流进行变更时,使上述来自上级的上述导视频道的信息流直接通过,并在上述复用器中进行复用,后由上述打包器打包发送。 [0013] Moreover, when the above information does not flow from the upper channel guides above were changed so that the above information flow channels above guides directly from superiors, and re-used in the above multiplexer, after the above the packer sent packing. 另外,当在来自上级的上述导视频道的信息流中增加规定频道的帧的情况下,仅对上述规定的频道的帧进行选择,并由上述复用器复用到该导视频道的信息流后,由上述打包器打包发送。 Further, when the increase in the frame of a prescribed channel of information flow from the upper channel of said guides, the frame of only the predetermined channel is selected, the above-described information multiplexed into multiplexer channel by the guides After the stream, sent packing by the packer. 当在来自上级的上述导视频道的信息流中删除规定频道的帧的情况下,上述导视频道控制器接收由上述解包器解析的导视频道信息,从中删除规定频道,上述复用器对上述多个帧中上述规定频道以外的帧和变更后的上述导视频道信息复用为导视频道的信息流后,由上述打包器打包发送。 When dropping frames specified in the information flow channel from the upper channel guides above the case, the channel guides channel controller receives information from these guides unpacker resolved, remove provisions channels, these multiplexers of said guides and changes the channel information frame a plurality of frames other than the predetermined channel after multiplexing traffic guides after channel, transmitted by the packetizer packaged. 由此,可以实现对不同的用户群发送与之相对应的导视频道。 This makes it possible to realize the different user groups with the corresponding transmit channel guides.

[0014] 本发明的导视信息生成设备,还优选上述频道信息控制器对每个频道附加权重并添加到导视频道信息中,并由上述复用器根据上述权重对上述被选择的帧进行排序,并复用为导视频道信息流。 [0014] GUIDE information generating apparatus of the present invention, the controller is also preferable that the channel information for each channel and the additional weights added to the channel information in the guides, said multiplexer based on the weight of the frame were selected by sorting and reuse of information flow channel guides.

[0015] 另外,本发明还提供一种电视接收装置,接收数字TV广播,并在该数字广播信号中包含有,由如权利要求1〜9中任何一项上述的导视信息生成设备生成的导视频道,并具有:解调器,接收网络调制信号;解包器,将数据包解包成电视节目复用流;解复用器,从上述电视节目复用流中解复用视频流和频道信息;解码器,解码视频流数据成为未压缩的图像信号;图像处理器,利用来自上述解复用器解复用得到的导视频道信息,对于来自上述解码器的上述导视频道的信息流中的各个频道的上述被选择的多个帧生成多个缩略图,并对上述多个缩略图进行排序,显示单元,显示来自上述图像处理器的图像输出。 [0015] Further, the present invention also provides a television receiving apparatus for receiving digital TV broadcasting, and included in the digital broadcast signal has, generated by generating device as claimed in any one of the above-described 1~9 information requirements of guides channel guides, and comprising: a demodulator, the modulation signal receiving network; depacketizer, unpacks the packet multiplexed stream into a television program; demultiplexer, said television program from the multiplexed stream demultiplexing a video stream and channel information; decoder decodes the video stream data becomes uncompressed image signal; an image processor, the channel use information from the guides said demultiplexer demultiplexing obtained from the above-mentioned guides channel decoder of said plurality of frames of the selected information streams of each channel to generate a plurality of thumbnails, and to sort the plurality of thumbnails, the display unit, the display image output from the image processor. 因此,在本发明的电视接收设备中,无需像现有的电视设备那样,为了观看多个频道的导视信息而使用多路解码器。 Thus, in the television receiving apparatus of the present invention, like conventional television device without the need, as guides for viewing information using a plurality of channels multiplexed decoder.

[0016] 另外,上述电视接收装置,优选上述图像处理器,可以将上述被选择的多个帧中的、与指定频道相对应的帧直接显示为本来的尺寸,并输出至上述显示单元。 [0016] Further, the television receiving apparatus, preferably, the image processor, the plurality of frames may be selected in, and the specified channel corresponding to the original frame size for direct display, and output to the display unit. 并且,优选对由上述导视频道信息流解码的、与各个频道相对应的帧进行更新。 It is preferable for the channel guides the flow of information by the decoding, with each channel corresponding to a frame update.

附图说明 Brief Description

[0017] 图1是导视信息生成器结构图; [0017] FIG. 1 is a configuration diagram of guides information generator;

[0018] 图2是路由功能结构图; [0018] FIG. 2 is a functional block diagram of the route;

[0019] 图3是表示IPTV网络划分的图; [0019] FIG. 3 is a diagram showing division IPTV network;

[0020] 图4导视信息节点在IPTV网络中的位置的示意图; [0020] Figure 4 a schematic view of a bumper in the IPTV network information node position;

[0021] 图5IPTV网络中节点和子网的说明图; [0021] Figure 5IPTV network nodes and subnets explanatory diagram;

[0022] 图6IPTV典型协议栈的示意图; [0022] Figure 6IPTV schematic of a typical protocol stack;

[0023] 图7IPTV典型包结构的说明图; [0023] FIG 7IPTV explanatory view showing the structure of a typical packet;

[0024] 图8导视信息生成器安装于路由中的结构图; [0024] Figure 8 guides routing information generator mounted in the configuration diagram;

[0025] 图9路由运作过程的流程图; [0025] Figure 9 flowchart of the operation procedure of the route;

[0026] 图10导视信息生成器运作过程的流程图; [0026] FIG. 10 guides a flow chart of operation of the information generator;

[0027] 图11频道信息控制器的运作过程的流程图; [0027] The operation of the process flow diagram in Figure 11 channel controller information;

[0028] 图12频道时间戮关系表/[目息结构的不意图; [0028] Figure 12 channel time kill relational tables / [are not intended to mesh structure of interest rates;

[0029] 图13导视频道的数据结构和生成过程的流程图; [0029] data structure and flow chart generation process guides 13 channels;

[0030] 图14典型马赛客导视信息显示画面; [0030] Figure 14 Typical Marseille guides passenger information display screen;

[0031] 图15含有码率控制器的导视信息生成器的结构图; [0031] FIG. 15 guides information generator comprising a configuration diagram of the rate controller;

[0032] 图16码率控制器的运作过程的流程图; [0032] The flowchart of the operation of the process rate controller 16 of FIG;

[0033] 图17广播模式下的子网导视频道传输的示意图;[0034] 图18组播模式下的子网导视频道传输的示意图; [0033] a schematic view of the transmission channel guides subnet broadcast mode in FIG. 17; [0034] a schematic view of the transmission channel 18 guides subnet multicast mode of;

[0035] 图19接收端的电视接收装置的结构图; [0035] Figure 19 the receiving side configuration diagram of television receiving apparatus;

[0036] 图20接收端的电视接收装置的处理过程的流程图; Flowchart [0036] FIG. 20 of the television receiver apparatus receiving side processing procedure;

[0037] 图21级联下导视信息生成器结构图; [0037] Figure 21 below guides information cascade generator diagram;

[0038] 图22级联下导视频道传送网络图; [0038] Figure 22 below guides cascade channel transmission network map;

[0039] 图23多头端下导视频道传送网络图; [0039] Figure 23 long end under the guides channel transmission network map;

[0040] 图24增加频道观看统计信息的频道时间戳关系表的示意图; [0040] Figure 24 increase channel viewing statistics schematic channel timestamp relational tables;

[0041] 图25视频导视信息生成器结构图 [0041] Figure 25 video guides Information Chart Builder

[0042] 图26接收端视频导视信息回放设备结构 [0042] Figure 26 guides the receiving end of the video playback device configuration information

[0043] 图27接收端视频导视信息回放过程的数据格式转换 [0043] Figure 27 guides the receiving end of the video information during playback of data format conversion

具体实施方式 DETAILED DESCRIPTION

[0044] 以下结合附图对本发明的实施方式以IPTV为例进行具体的说明。 [0044] THE DRAWINGS Embodiments of the present invention to IPTV as an example will be specifically described.

[0045] 对本发明的第一实施方式的系统组成进行详细说明,同时说明其中出现的基本概念。 [0045] The first embodiment of the present invention will be described in detail the composition of the system, but to illustrate the basic concepts which occur. 在该实施方式中,导视频道信息是由不断更新的图像构成的,采用MPEG-2视频的压缩方式。 In this embodiment, the channel information guides are constituted by a continuously updated image, using the MPEG-2 video compression method.

[0046] 本实施方式中,如图5所示,在利用本发明实现的IPTV网络中,在网络节点501上设置有导视频道生成器,在作为接收端的网络节点502上设置有导视频道回放设备(电视接收装置)。 [0046] In the present embodiment, shown in Figure 5, using the present invention implemented in an IPTV network, the channel guides are provided on the network node generator 501, as provided in the network node on the receiving end of the channel 502 has guides playback device (television receiver). 在此,为了说明的便利,把设置有本发明的导视信息生成器的节点称作导视生成节点。 Here, for convenience of explanation, the information generator is provided with a bumper of the present invention is a node called guides generation node.

[0047] 下面,进一步具体说明本发明所应用的典型环境和本发明在该环境中的位置,但是可以理解,这一典型环境仅是对本发明构成的一个具体的实例,并不能构成对本发明的限制。 [0047] Next, a further specification location exemplary context of the present invention is applied, and the present invention in this environment, it will be appreciated that a typical environment is only one specific example of the present invention is constructed, and does not constitute the present invention. limit.

[0048] 首先,图3表示了一个基于ITU-TJ.281标准的典型IPTV网络架构,在该IPTV网络中主要由四部分构成:头端301、核心网302、接入网303及接收端304,另外,还接入互联网(internet) 305。 [0048] First, FIG. 3 shows a typical IPTV network architecture based on ITU-TJ.281 standard, in the IPTV network mainly consists of four parts: the head end 301, the core network 302, access network 303 and the receiver 304 , In addition, Internet access (internet) 305. 头端301负责协调电视信号和产生TS流,此外进行IP包封装,生成IP包(数据包)。 Headend 301 is responsible for coordinating the TV signal and generating TS stream, in addition to the IP packet encapsulation, generate IP packets (packets). 在同一个系统中含有至少一个头端。 In a system with at least one head-end. 核心网302负责以足够的传输质量传输进入每个接入网的IP包。 Core network 302 is responsible for a sufficient transmission quality of the transmission of each access network into the IP packet. 接入网303负责连接接收端304和核心网302,还可能提供接收端设备与互联网305之间的连接。 The access network 303 is responsible for connecting the receiver 304 and the core network 302 may also provide the receiving end device with an Internet connection 305 between.

[0049] 上述有关IPTV网络的构成大致与现有的IPTV网络相同,但是不同点在于,头端可以不生成单独的导视频道,而在整个网络的任意位置上设置导视生成节点,即导视生成节点可以位于核心网或接入网中的任意一者中。 [0049] For the above-described IPTV network configured substantially the same as the existing IPTV network, but is different in that the head-end may not generate a separate channel guides, guides generation node provided at an arbitrary position on the entire network, i.e., the guide Depending generation node may be located in the core network or access network of any one of a. 而利用该导视节点所生成的导视信息所能被传播的范围就是由该节点所指定的IP包的传送路径。 The transmission path information by using the bumper guides range generated by the node can be propagated by the node is the designated IP packet. 例如,如果该节点位于核心网中,那么该导视信息将被传送到所有与该节点有关的接入网;如果该节点位于接入网中,那么该导视信息将被传送到所有该节点以下的子网中。 For example, if the node is located in the core network, then the information will be transmitted to all the guides of the node associated with the access network; if the node is in the access network, then the information will be transmitted to all the guides of the node The following subnet. 因此,本发明也不受是否在核心网或接入网的限制,在此,为了说明的便利,把导视信息所能传送到的网络区域定义为子网。 Accordingly, the present invention is also not in the core network or access network limits, in this, in order to facilitate the explanation, the guides can transmit information to the network area is defined as a subnet.

[0050] 其次,说明在适用本发明的IPTV网络中所采用的典型协议栈。 [0050] Next, typical IPTV network protocol in the application of this invention employed in the stack. 图6显示了应用广泛的一种IP包上承载MPEG-2TS流的协议栈,与ITU-T标准J.281中的一致。 Figure 6 shows the carrying MPEG-2TS stream on a prevalent IP packet protocol stack, in line with ITU-T standard in J.281. IP协议栈分层的结构是处于网络结构,传输效率和划分处理职能的考虑。 IP protocol stack is a layered structure in the network structure, consider dividing the transmission efficiency and processing functions. IP协议层在整个网络中,数据包拥有唯一且固定传送地址,是与具体连接方式无关的一层。 IP protocol layers throughout the network, the packet has a unique address and fixed carriers, has nothing to do with the specific connection layer. IP协议层以上的数据也是以包的形式存在,被打包在一个或多个IP包内,如图7所示。 IP protocol layer above the data also exist in the form of packets, are packaged in one or more IP packets, as shown in Fig. IP包由包头和所负载的IP数据两部分构成,IP包头中有IP包传送的源地址、目的地址及长度等信息。 IP packet header and IP data from the load of two parts, the IP source address of the IP packet header has sent, destination address and length information. IP数据中装载m)P和TCP的数据包。 IP data is loaded m) P and TCP packets.

[0051] UDP,即用户数据报协议,是不提供重传机制的一种协议,适于大比特率的不需要重传的多媒体信息传送。 [0051] UDP, namely, User Datagram Protocol, is a protocol does not provide a retransmission mechanism, suitable for multimedia messaging does not require retransmission bitrate. 它也包含头部和数据负载两部分。 It also contains the header and data load in two parts. m)P数据部分装载RTP包。 m) P Data partially loaded RTP packets. RTP,实时传输协议提供了对多媒体数据的网络适应性。 RTP, the real-time transport protocol provides multimedia data network adaptability. MPEG-2TS流被打包进RTP数据中。 MPEG-2TS stream is packaged into RTP data. TS,传输流,是将音、视频和数据等数字信号复用在一起的打包协议,并能保证音视频的同步。 TS, transport stream, is such as sound, video, and data signals are multiplexed together digital package agreement, and to ensure the synchronization of audio and video. 每个TS流中可以传输一套或数套电视节目,即音视频。 Each TS stream can be transferred one or more sets of television programs, namely audio and video. TS流有两种类型的负载:PES,即打包基本流,负责装载音视频的数字信号;段数据,装载了轮播的数据服务,PSI/SI信息或ECM/EMM。 TS stream has two types of load: PES, i.e., packetized elementary stream, responsible for loading audio and video digital signal; segment data, loaded carousel data service, PSI / SI information or ECM / EMM. 段数据是为了实现数据信息,控制信息和加密信息的传送。 Data segment is to achieve data information, control information and transmits the encrypted information. 其中,PES中传送的视频信号通常是经过前向预测编码算法压缩的,例如MEPG-2视频,MPEG-4视频,MPEG-4AVC等等。 Wherein the video signal is usually transmitted PES through predictive coding algorithm before compression, e.g. MEPG-2 Video, MPEG-4 video, MPEG-4AVC and the like. 他们共同的特点是包含两种帧编码方式,帧内和帧间编码。 Their common feature is the included two frame encoding, intra and inter coding. 帧内编码是指不依赖于其他帧的信息,基于这一帧的压缩信息就可以完全解码这一帧,也称作I帧。 Intraframe coding means does not depend on other frames of information, based on the compression information of the frame can be completely decoded this frame, also referred to as an I frame. 帧间编码是指该帧的解码需要利用来自于其他帧的信息,自身不能独立解码。 Inter-frame coding refers to the need to use the decoded frame information from other frames, itself can not be decoded independently. 本实施方式中,采用了MPEG-2视频压缩格式。 In this embodiment, using the MPEG-2 video compression format.

[0052] IP层支持的另一种上层数据协议是TCP,一种支持重传机制,可以保证传送到达的协议。 [0052] IP layer protocol support another upper layer data is TCP, a retransmission mechanism can guarantee delivery to reach agreement. 其上层的RTSP,即实时流协议,用于向用户提供双向信道的控制信息的传送服务。 Its upper RTSP, i.e., real-time streaming protocol, the service provided to the user for transmitting bi-directional channel control information. 依靠它,可以实现对视频点播和频道切换等回放功能。 Rely on it, you can achieve on-demand video playback and channel switching.

[0053] 事实上,可以被用作IPTV信号传送的协议栈不限于这一种,作为运载视频压缩数据的应用层协议会有所不同,但都在IP包的框架内。 Within the framework [0053] In fact, can be used as IPTV signaling protocol stack is not limited to one, as carrying video compression application layer protocol data will vary, but in IP packets. 因此,通过采用应对不同应用层协议栈,可以将本发明可应用于其他各种形式的IPTV网络中。 Thus, by using different application layer protocol stack response, the present invention can be applied to various other forms of IPTV network.

[0054] 本实施方式中,节点类型为路由。 [0054] In the present embodiment, the node type for routing. 路由的功能就是过滤接收到的IP包,并把它们按照目的IP地址转发到指定的输出路径上,如图2、图3及图9所示。 Routing function is to filter the received IP packets and forward them to the destination IP address in accordance with the output path specified in Figure 2, Figure 3 and Figure 9. 每一个输出路径,都对应在这个节点以下的一个子网。 Each output path corresponds to a subnet node below. 同一子网内的设备都具有比不同子网间的设备更加相近的IP地址。 Devices within the same subnet have more similar than different subnets device's IP address. 在某个子网上传输的电视节目频道数目不多于输入这个节点的全部电视节目数。 In a number of sub-transmission of television channels online more than all of the input node number of television programs. 这里,对应每一个子网,把这种功能的设备称作包过滤器202。 Here, each corresponding to a subnet, to put this function device called a packet filter 202. 通过将本发明的导视信息生成器设置在该节点上,可以在该节点的输出路径上添加包含导视信息的导视频道。 Information generated by the guides of the present invention is provided on the node, can be added guides contain information on the channel guides the output path of the node. 另夕卜,从用户端到头端的反向信道可以通过诸如RTSP等协议实现。 Another Xi Bu, ended headend reverse channel from the user via protocols such as RTSP, etc. can achieve. 通过建立路由表,包过滤器202有判别IP包需要被发送到目的子网的能力。 Through the establishment of the routing table, the packet filter 202 discriminative IP packets need to be sent to the ability of the purpose of the subnet. 在经过路由转发到该节点的某一子网的节目对应目的地为该子网内的一系列地址的IP包链接,每个IP包内通常携带一个或多个TS码流(参照图9)。 After routing and forwarding to the node of a subnet IP packets destined for the corresponding program links a series of addresses within the subnet, usually carrying one or more TS stream (see Fig. 9) in each IP packet .

[0055] 此外,以下首先讨论子网是广播的情形。 [0055] In addition, the following case is discussed first subnet broadcast. 如图17所示,导视信息生成器所在的(路由)节点1704向子网1703发送导视频道。 As shown in Figure 17, where the guides information generator (route) node 1704 sends the channel guides to the subnet 1703. 由于是广播方式,子网1703内的所有接收端都无差别的收到该路由节点1704所发送的所有IP包和接收对应的电视频道。 Because it is broadcast manner, all within the receiving end 1703 subnets are undifferentiated receipt of the routing nodes 1704 all IP packets sent and receive the corresponding TV channels.

[0056] 在导视生成节点中,导视信息生成器111的结构如图1所示。 [0056] In the bumper generating node, information generator 111 guides the structure shown in Figure 1. 它由如下几部分构成:解包器105,用于将数据包解包成电视节目复用流,即将IP、UDP、RTP协议的分层包结构逐层解开,而恢复成电视节目复用流;解复用器106,用于对解包器解包的电视节目复用流中的一套或多套音视频和数据信号进行解复用,分离出单项信号,其中包括视频流和频道信息,用作对相应导视信息的控制和描述;频道信息控制器108,根据来自解复用器的频道信息生成导视频道信息;帧选择器107,从解复用后的视频流中选择出帧内编码帧(I帧)数据,但不对其进行解码;复用器109,由频道信息控制器控制,将导视频道信息和由帧选择器所选择的多个帧复用为信息流;打包器110,用于将导视频道的信息流打包为附有导视信息的IP包(即,数据包)。 It consists of the following components: depacketizers 105 for packet unpack multiplexed stream into a television program about to IP, hierarchical packet structure UDP, RTP protocol layer by layer removed, and restored to the television program reuse stream; demultiplexer 106, for unpacker unpacks television demultiplexes multiplexed stream with one or more sets of audio, video and data signals, separate the individual signals, including streaming video and channel information, used as guides for the corresponding control and information description; channel information controller 108 generates channel information based on channel information guides from the demultiplexer; frame selector 107, to select from a video stream demultiplexed in the intra-coded frame (I-frame) data, but does not decode; multiplexer 109, the controller controls the channel information, the channel information guides and a plurality of frames by the frame selected by the selector for the multiplexed stream; packer 110 for information flow channel guides guides with information packaged as an IP packet (ie, packet). 由于解包器用于把所有的经过该节点的IP包进行处理,也就是所有电视频道都被过滤,然后按照子网的频道组合生成适于该子网的导视频道。 Because unpacker for all IP packets through the node for processing, that is, all the TV channels are filtered, and then follow the channel combination subnet generate suitable channel guides that subnet.

[0057] 图8显示了本发明的导视信息生成器安装在网络节点中的例子,该网络节点类型是实现图2所示功能的路由器。 [0057] Figure 8 shows an example of a bumper information generator of the present invention is installed in a network node, the network node is a router to achieve functional type shown in Figure 2. IP包过滤器202使这个节点具有了对三个不同的子网节目组合分别生成三个导视频道的能力。 IP packet filter 202 nodes with the ability to make the three guides on three different channels subnets program combinations were generated.

[0058] 以下结合图8和图10具体说明在该路由节点中的本发明的导视信息生成器111的运作过程。 [0058] with reference to FIGS. 8 and 10 illustrate the operation of the specific information generator guides the process of the present invention in the routing node 111.

[0059] 对每一个发送到该路由节点的IP包进行输入(S1001),由IP包解包器105对所有IP包进行逐层解包直至获得MEPG-2TS码流(S1002);然后,由解复用器106对TS流解复用,分离出视频流,同时,将对应该视频流的时间和频道信息送至频道信息控制器108(S1003);接着,由帧选择器107分离出各个频道节目中的所有的I帧并生成全部由I帧构成的视频PES流(S1004);再接着,频道信息控制器108控制TS流复用器109将生成的视频PES流与每个I帧对应的频道标识的数据信息复用进TS流(S1005)。 [0059] For each routing node transmits to the IP packets input (S1001), layer by layer unpacked until MEPG-2TS stream (S1002) the IP packet unpacking 105 for all IP packets; then, by demultiplexer 106 demultiplexes the TS stream, the video stream separated at the same time, the video stream will be the time and channel information to the channel information controller 108 (S1003); then, separated by the frame selector 107 of each channel programs in all of the I frames and generates all the I frames of a video PES stream (S1004); Subsequently, the controller 108 controls the channel information TS stream multiplexer 109 generates a video PES stream corresponding to each I frame channel identification data information multiplexed into the TS stream (S1005). 这样在每个原先的TS流中都附加了一个导视频道,而且,为了减小数据处理量,对于一个IP连接中承载多个TS流的情况,只需要对其中一个TS流加入导视信息即可。 So that each original TS stream channel guides have attached a, and, in order to reduce the amount of data processing, an IP connection for multiple TS stream carrying case, one only needs to join TS stream information guides can be. 由于在原TS流中增加了导视频道的内容,而使数据量的加大,TS包的个数会有所增加。 With the addition of the contents of the channel guides in the original TS stream, leaving the amount of data increased, TS packet number will increase. 最后,打包器110从协议栈参数缓冲区中取出对应当前TS数据的原始发送、目的IP地址等信息对新合成的TS流进行IP包封装(S1006),使得该IP包拥有与图2中原始路由中相同的网络路由特性,经过包过滤器202后送达到各个目的子网中(S1007)。 Finally, the packetizer 110 is removed from the stack parameters TS data buffer corresponding to the current original transmission, the destination IP address and other information on the newly synthesized TS stream encapsulation IP packet (S1006), so that the IP packet has the original in Fig. 2 the same route network routing features, through the packet filter 202 evacuation reach each destination subnet (S1007). 由此,完成在网络路由节点上的导视信息生成器的运作。 Thus, complete information generator guides on the network routing node operation.

[0060] 其中,频道信息控制器108控制复用器109的具体步骤如图11所示,对照图12和图13,说明如下: [0060] wherein, the channel information controller 108 controls the multiplexer 109 is the specific steps shown in Figure 11, with reference to Figs. 12 and 13, as follows:

[0061] 首先如图13所示,以针对包含3个频道的TS流进行说明,这3个频道流分别是:频道(Channel N0.)4(1201)、频道5 (1202)频道6 (1203)。 [0061] First, as shown in FIG. 13, in order for the TS stream containing the three channels will be described below, these three flow channels are: (. Channel N0) Channel 4 (1201), Channel 5 (1202) Channel 6 (1203 ). 进入帧选择器107的视频帧结构的时间分布(1201,1202,1203),I帧的位置是相互独立的。 Frame Selector time profile into the video frame structure 107 (1201,1202,1203), the location of I-frames are independent. 可见帧选择器输出的视频帧结构1204在时间上不均匀分布。 Video frame structure visible frame selector 1204 outputs unevenly distributed in time. 因此,在向复用器输入来自上述帧选择器的I帧后(SllOO),首先控制TS流复用器将I帧构成的PES缓存(SllOl);然后,对每个I帧的PES生成均匀分布的时间戳(S1102);接着,按照该时间戳等间隔的取出缓存中的I帧PES包(S1103);同时,不断将频道信息与时间戳关系表格(图12)生成私有段数据(S1104);最后将以上I帧PES包和段数据包复用为TS包(S1105)。 Thus, the I frame to the multiplexer input from the frame selector rear (SllOO), the first stream multiplexer control TS PES buffer I frame configuration (SllOl); then, to form a uniform frame of each PES I timestamp (S1102) distribution; then, according to the time stamp fetching buffer I frame interval in the PES packet (S1103); at the same time, to keep the channel information and the relationship between the timestamp table (Fig. 12) generating a private segment data (S1104 ); Finally, the above paragraph I frame PES packets and packets are multiplexed into a TS packet (S1105). 在TS流中,I帧输出的间隔被调整为基本均匀,如图13的1205所示。 In TS streams, I-frame interval of the output is adjusted to a substantially uniform, as shown in FIG. 13 of 1205.

[0062] 以上是对第一实施方式的导视信息生成器的说明。 [0062] The above is the first embodiment of the guides information generator of Fig. 但是,本发明并不局限于上述实施方式,下面讨论将本发明的导视信息生成设备应用于路由节点的不同类型。 However, the present invention is not limited to the above embodiments, the following will discuss the different types of guides information generating apparatus of the present invention is applied to the routing node. 路由节点的子网可以因为路由具有不同的IP包传送特性而分为单播子网,广播子网和组播子网。 Subnet routing nodes may have different IP because the routing packet transfer characteristics into unicast subnet, subnet broadcast and multicast subnet. 三者的区别在于子网中接收到由同一个IP地址发送出来的IP包的设备范围。 Difference between the three that received the subnet IP address by sending the same out of the range of IP packets device. 子网中的设备与头端建立一对一的连接称作单播;子网中所有设备都能收到头端向特定地址发送的IP包称作广播;头端向子网中指定的某一组设备发送IP包称作组播。 Subnet headend equipment and establish a one to one connection is called unicast; subnet all devices can receive IP packet header sends broadcast referred to a specific address; headend to specify a particular subnet group called multicast device sends IP packets. 因此组播有助于在同一个物理网络中实现区分传送节目,而不必与每个接受端建立重复的一对一连接。 Therefore contributes to distinguish multicast transmit programs in the same physical network, without having to establish connections with each one repeating the receiving end. 如图18所示,导视信息生成器位于节点1801中,对于子网1809中的用户1806和1807提供了添加导视频道的节目1802,由于子网1809支持组播,节点1801不需要对每个用户1806和1807分别建立连接,而只需要建立到子网内的节点1804的一个组播连接就可以了。 Shown, guides information generator located 18 nodes 1801, 1809 for the subnet in 1806 and 1807 provided the user to add the program guides 1802 channels, due to support multicast subnet 1809, 1801 is not required for each node 1806 and 1807 respectively users to establish a connection, but only need to establish a multicast connection subnet node 1804 will be able to. 由此可见,本发明中的导视信息生成器可用于支持组播的路由,只要IP包过滤器及对应的子网能够支持组播,导视信息就可以被传送到对应的组播组中。 Thus, the present invention guides information generator can be used to support multicast routing, as long as IP packet filters and the corresponding subnet to support multicast, guides information can be transferred to the corresponding multicast group . 与前面所述的不同在于,包过滤器发往同一个子网中的IP包将有所不同,并传送给不同的组播组。 Unlike the front that sent the packet filter to the same subnet IP packet will be different, and send it to different multicast groups. 组播的应用是实现多订户组的典型方式。 Multicast applications are typically multi-mode subscriber group.

[0063] 因为本发明中的导视信息发生器不影响原先节点和子网的已有功能类型,只是添加导视频道到输出子网。 [0063] Since the present invention does not affect the existing guides information generator function type original nodes and subnets, just add to the output channel guides subnet. 本发明可以应用在其它类型的节点上,例如网关。 The present invention may be applied to other types of nodes, such as gateways. 因为网关改变IP包内负载内容,即同一个IP包可能被重新构建。 Because the gateway IP packet payload contents change within that same IP packets may be rebuilt. 因此包过滤器的作用将不只是判断整个IP包的路由路径,而要判断负载中每部分的路由路径要求。 Therefore, the role of the packet filter will not only judge the entire IP packet routing paths, and to determine the routing path for each part of the load requirements. 对于本发明的部分不需要改变。 For part of the present invention does not need to change.

[0064] 另外,视频压缩的格式也可能不同,但只要该压缩格式中存在独立的帧内编码帧,本发明的设备和方法可以通过选择适当的帧内编码帧得以实现。 [0064] In addition, video compression formats may be different, but independent of the presence of intra-coded frame format as long as the compression apparatus and method of the present invention can be obtained by selecting the appropriate intra-coded frame can be achieved.

[0065] 由于网络节点中的导视信息发生器只做解包、打包和解复用等数据封装格式的转换,而不进行计算量较大的视频解压缩、压缩计算,因此,运算负荷相对每个频道视频解码再编码生成导视频道小得多。 [0065] As the network node information generator guides only unpacking, packing and demultiplexing conversion formats such as data encapsulation, without a large amount of computation video decompression, compression calculation, therefore, the relative computational load per channels of video decoding re-encoded to generate smaller channel guides. 而接收端的导视信息回放设备只处理通常的视频帧内编码帧的解码,是接收端原本具有的能力范围,因此实现难度也很小。 The receiving end of the information playback apparatus guides only treatment is typically decoded intra-coded video frames, is the capability of the receiving terminal originally has, and therefore difficult to achieve very small. 也可以通过对接收端的视频解码器进行更改而实现图像处理器的相应功能。 Also can be obtained by the receiving end to change the video decoder and corresponding function of the image processor.

[0066] 此外,本实施方式中,帧选择器可以应用为其他帧过滤装置。 [0066] Further, the present embodiment, the frame selector can apply a filter means for the other frames. 例如能够判断关键帧的关键帧过滤器,用于能够提取视频统计上的关键镜头帧。 Such as the ability to determine keyframe keyframe filters can be used to extract key statistics on the frame of the video camera. 但是,这种应用对硬件复杂度和运算能力有较高的要求。 However, this application of hardware complexity and computing power have higher requirements.

[0067]以上,本实施方式描述了将导视频道作为每个接收端当前收到的TS流中的增加的视频ES流进行传输的方式。 Above [0067], the present embodiment describes the guides of each channel as received by the receiving end of the current increase in TS stream video ES stream transmitted. 事实上,对于有固定IP地址的路由或网关,可以将导视频道的ES流单独封装在一个独立的TS中,进而打包在一个独立的IP连接中,成为一个独立的频道,而不是与任何其他节目共享TS流。 In fact, there is a fixed IP address for routing or gateway, you can stream channels ES guides individually packaged in a separate TS, and then packaged in a single IP connection, become an independent channel, rather than with any Other programs shared TS stream. 这个连接只当接收端频道切换到该频道时才会被建立。 This connection only when the channel is switched to the receiving end of the channel will be established. 好处是,不需要始终占用从该节点直至接收端的每个连接的带宽,但需要占用一个独立网络服务频道。 The advantage is that the connection does not need to always occupy the bandwidth for each node until it receives from the terminal, but need to take a separate network service channel. 在这种情况下,接收端观看导视频道的方式就是将频道切换到该节点所发送的频道中,即建立到这个节点的一条新连接。 In this case, the receiving end guides channel viewing mode is switched to the node to channel transmitted channel, i.e., establishing a new connection to this node.

[0068] 下面,对本发明的第二实施方式进行详细说明,在第二实施方式的导视信息生成器中集成控制复用器的码率控制器,因此,可以实现根据网络的带宽来调节导视频道的占用带宽的功能。 [0068] Next, a second embodiment of the present invention will be described in detail, in the second embodiment of the guides integrated control information generator in multiplexer rate controller, therefore, can be realized according to the bandwidth of the network regulating pilot function bandwidth video channel.

[0069] 本发明第二实施方式的导视信息生成器,如图15所不。 [0069] The second embodiment of the present invention guides information generator, not shown in Figure 15. 在第一实施方式的基础上增加了码率控制器1512,用于调节生成的导视频道的码率。 On the basis of the first embodiment adds the rate controller 1512 for adjusting the code rate to generate the channel guides. 对该码率控制器1512的输入包括,从网络节点的网络设备中获得的当前子网可用带宽数据1501和从帧选择器1509获得的当前滤出的I帧码流1505的码率。 Enter the rate controller 1512 includes, for the current subnet obtained from the network devices in the network node 1501 and the current data available bandwidth filter out the I-frame code obtained from the frame selector 1509 1505 Flow rate.

[0070] 它的运作过程如图16所示。 [0070] It is the operation of the process shown in Figure 16. 当帧选择器滤出一帧I帧后(S1601),码率控制器1512由当前I帧视频码率估算出当前用户链接中的导视频道码率的增加值(S1602);比较该增加值是否小于子网中该用户链接的可用网络带宽(S1603),如果小于该可用网络带宽,则将该帧复用进TS流中的导视频道,或者将该帧复用进单独的导视频道(S1604);如果大于可用带宽;则丢弃该I帧(S1605)。 When the frame selector filter out an I frame after frame (S1601), the rate controller 1512 by the current I-frame video bit rate to estimate the current value-added links in the user guides channel bit rate (S1602); comparing the added value is less than the subnet of the network bandwidth available to the user link (S1603), if less than the available network bandwidth, then the frame is multiplexed into TS stream channel guides, or the frame is multiplexed into a single channel guides (S1604); if greater than the available bandwidth; it drops the I frame (S1605). 重复以上过程使每个用户的连接都能够在可用带宽内。 Repeat the process so that each user can be connected within the available bandwidth.

[0071] 具体码率控制算法可有不同。 [0071] Specific rate control algorithm can be different. 例如,可以加入对所有频道的滤出的I帧都能够均匀的被传输的考虑。 For example, consideration may be added to filter out all the channels of the I-frame can be uniformly transmitted. 也就是在接收端回放时,导视频道的导视图像中每个频道的缩略图能被等速率的更新。 Is played back at the receiving end, be like a thumbnail update rate of each channel in the channel guides the image guides.

[0072] 实际应用中,码率控制会带来接收端回放导视信息时,缩略图更新速度的下降,但是可以消除大量I帧造成的较大的码率增加对子网中收看效果的影响。 [0072] In practical applications, the rate control will bring the receiving end guides playback information, thumbnail update rate decreases, but can eliminate a large number of big rate increase caused by the I-frame on the subnet viewing results .

[0073] 而且,本发明的导视信息生成器还可以在网络中形成级联的形式,下面利用第三实施方式说明本发明在级联中的应用。 [0073] Further, guides information generator of the present invention may be formed in the form of a cascade in the network, following the use of a third embodiment of the application of the present invention in cascade.

[0074] 如前所述导视信息生成器对其所在的网络节点以下的子网提供导视信息服务(如图4)。 [0074] As mentioned guides subnet information generator where its network nodes following guides provide information services (Figure 4). 而且,如图22所示,本发明除了在节点2201上设置了上述本发明的导视信息生成器以外,还可以在该子网内的其它节点(例如节点2206)中设置另一个导视信息生成器,形成导视信息生成器的级联。 Further, as shown, in addition to the present invention is provided on node 2201 guides information generator of the present invention may also be other nodes in the subnet 22 (e.g., node 2206) provided another information guides generator, forming guides information generator cascade. 图21显示了在导视信息生成器进行级联的节点上导视信息生成器的结构。 Figure 21 shows a bumper information generator on a node in the information generator guides cascaded structure. 相对于第一实施方式的结构,增加了导视频道控制器2102,用于对收到的导视频道进行判断,并控制频道信息控制器对输出的导视频道进行调整。 With respect to the structure of the first embodiment, the controller 2102 increases the channel guides, channel guides for the received judgment, and the control channel information output from the controller to adjust the channel guides. 帧选择器2106的输入2108变为需要加入到导视信息中的频道,而不对所有的频道进行过滤。 2106 input frame selector 2108 becomes necessary to add to the information in the channel guides, not all of the channels are filtered.

[0075] 级联下,子网中节点可能遇到如下几种情况中的一种。 By [0075] cascade, subnet node may encounter the following situations in one.

[0076] 第一,如图22所示,两级级联的导视信息生成器分别在节点2201和节点2206上。 [0076] First, as shown in FIG. 22, two-stage cascade guides information generator 2201, respectively, to the node and node 2206. 节点2206的某个子网2205的订户观看频道与该节点接收到的频道一致。 A subnet node 2206 2205 subscribers to watch the channel and the channel node receives the same. 则该节点上的导视信息生成器不需要对导视信息做任何变更或重新编排,让该导视频道直通即可。 Then guides the information generated on the node does not need to make any changes to the information on the guides or rescheduling, so that direct access to the channel guides.

[0077] 第二,如果子网2205用户有权观看的节目频道少于节点2206可收到的频道,即子网2205不应该在导视频道中看到他无权收看的节目。 [0077] Second, if the user has permission to view the subnet 2205 than 2206 channels of TV channels can be received by the node, Subnet 2205 should not see him the right to watch the show in the channel guides. 节点2206上的导视信息生成器的导视频道控制器2102将接收解包器2105解析出的频道列表信息,并与子网2205的有效频道比较,控制频道信息控制器2103变更频道时间戳关系表,删除无效的频道。 Guides information generator 2206 on a node controller 2102 receives the channel guides unpacker 2105 parse out the channel list information, and compared with the subnet effective channel 2205, the control channel controller 2103 to change the channel timestamp information relationship table, remove the invalid channels. 然后控制复用器2104将不把无效频道复用到TS流中。 Then control multiplexer 2104 will not be the invalid channels multiplexed into TS stream. 同时由于频道数目的变化,数据量也会有所降低,需要重新调整时间戳,即输出的导视频道I帧的间隔。 And because the number of channels changes, the amount of data will be reduced, the need to re-adjust the time stamp, i.e., the output of the channel guides I frame interval.

[0078] 第三,因为所有节目都是头端发送至用户,因此在只有一个头端的情况下,节点以下的子网的有效频道数目不可能比节点以上的频道数多。 [0078] Third, because all programs are transmitted to the head-end user, and therefore in the case of only one head end, the number of active channels is not possible subnet node less than the number of channels or more nodes. 但这种情况可以出现在多于一个头端连接到节点的情况中。 However, this situation may occur in more than one head end connected to the node case. 如图23所示。 As shown in Figure 23. 节点2304及子网2306拥有两个节目输入,分别来自节点2301和节点2302。 2304 and 2306 subnet node has two program inputs, respectively, from 2301 nodes and node 2302. 而这两个节点都提供了导视频道分别复用在连接2308和2303中。 And these two nodes are provided guides multiplexed channels were connected in 2308 and 2303. 此时,节点2304中的导视信息生成器的导视频道控制器2102将比较子网2307的有效频道与收到的两个头端的频道列表。 At this point, the channel controller guides information guides Builder node 2304 in 2102 to compare the two heads valid subnet channel list and receive channels 2307 ends. 做出如第一和第二种情况中的直通或删减处理。 Made as the first and the second case of straight-through processing or deletion.

[0079] 因此,利用上述导视信息生成器的级联,可以实现对子网中的导视频道内容的变更。 [0079] Thus, using the above information guides cascade generator, can change the channel on the subnet guides content.

[0080] 以下第四实施方式说明通过节点上的导视信息生成器产生辅助用户观看节目的附加信息,而用户可以利用此信息了解网络中关于热点频道的统计信息。 [0080] The following description of the fourth embodiment assist the user to view additional information generated by the program guides the information generated on the node, and the user can use this information to understand the network statistical information about the hot channel. [0081] 由于IPTV对于用户是双向网络,用户的观看请求会通过反向信道发向节点或头端,并根据此信息建立连接。 [0081] Since the IPTV user is bidirectional network, the user's viewing request will be sent to the node or head end via a reverse channel, and establishes a connection based on this information. 因此,每时每刻的观看的频道信息都可以被网络节点捕获和统计。 Therefore, every time the viewing channel information can be captured and statistical network nodes.

[0082] 仍然采用图1所示的结构,但频道信息控制器将会把每个频道的用户相关信息通过复用器添加到输出的TS流中。 [0082] still uses the configuration shown in FIG. 1, but will be channel information of the user of each controller channel information added by the multiplexer to the output of the TS stream. 图24为需要打包进TS流的段数据信息。 Figure 24 is a need to be packaged into the TS segment data. 相对第一实施方式,增加权重一栏。 Relative to the first embodiment, an increase in the weight column. 权重为统计导视信息生成器所在节点的所有子网中当前观看的频道数目的统计值。 Statistics the number of channels to watch the weight of statistical information guides the node builder all current subnet.

[0083] 相应的在接收端,如图19所示,图像处理器1905按照该权重值动态的显示网络中所有用户的观看统计,可以了解到那些频道是当前的热点频道。 [0083] In the respective receiving end, the image processor 1905 shown in Figure 19 in accordance with the viewing statistics weights dynamically displays all network users can understand that the channel is the current hot spot channels. 典型的显示方式是,将频道缩略图按照热播(观看人数多寡)排序。 A typical display is in accordance with the channel thumbnail hit (Viewed amount) order.

[0084] 下面,对可以收看附带有由上述本发明的导视信息生成器所生成的导视频道的接收装置,结合第五实施方式进行详细说明 [0084] Next, the flat guides supplied with the receiving channel by means guides information generator of the present invention is generated by combining the fifth embodiment will be described in detail

[0085] 图19所示为对应于本实施方式前部分导视信息生成器的接收端解码回放设备的结构。 [0085] Figure 19 is the receiving end corresponding to the front portion of the present embodiment guides the decoding configuration information generator of the playback device. 该设备可以附加在现有IPTV接收装置(电视机)内,或者单独作为机顶盒提供额外的导视信息,而不需要变更原来的接收装置(电视机)结构。 The device can be attached in a conventional IPTV receiving device (television), or separately as a set-top box guides provide additional information, without the need to change the original receiving device (television) structure. 导视信息回放设备由以下部件所组成:解调器1901,用以接收网络调制信号;解包器1902,用于将IP包逐层解开,输出MPEG-2 TS流;解复用器1903,用于将视频信号分离出来;图像处理器1904,利用来自解复用器的导视频道信息,对于来自解码器的导视频道的信息流中的各个频道的帧进行缩略图处理并排列;显示器1905,显示来自图像处理器的图像输出。 Guides the information playback apparatus is composed by the following components: a demodulator 1901 for receiving the network modulation signal; unpacker 1902 for IP packet layer by layer untied, output MPEG-2 TS streams; demultiplexer 1903 for separating out the video signal; an image processor 1904, the use of channel guides information from the demultiplexer, for a frame stream from the decoder of the channel guides in the respective channels and arranging thumbnail processing performed; Display 1905 displays an image output from the image processor.

[0086] 详细导视信息回放过程如图20所示。 [0086] For more information guides playback process shown in Figure 20. 在接收装置中还设置有用户界面,用于用户对接收装置进行控制。 In the receiving apparatus is also provided with a user interface, for user control of the receiving apparatus. 当用户输入指令切换至导视频道后(S2000),将允许用户选择导视信息的显示方式(S2001),例如图14是通常以马赛克形式进行显示的导视信息显示方式。 When the user input commands after switching to channel guides (S2000), will allow users to choose how to display information guides (S2001), for example, 14 is usually in the form of a mosaic display guides the information displayed. 每一个缩略图都来自于一个电视频道,这些缩略图的数据由所接收的频道的I帧组成的导视频道中取得。 Each thumbnail is derived from a television channel, the channel guides the thumbnail data from the I channel of the received frame composed achieved. 接下来,解码器解码完全由I帧组成的视频数据,并且将解码后的非压缩图像存入缓存(S2002);同时,图像处理器读取解复用器抽取的包含频道信息与时间戳关系表(参照图12)的段数据(S2003),找出当前收到的I帧所隶属的频道信息,将解码图像从缓存中取出并缩小成缩略图,排列成导视画面(S2004);最终显示在屏幕上,并直到接收到新的用户指令,不断进行以上步骤,不断更新导视画面(S2005)。 Next, the video data decoder decodes composed entirely of I-frames, and the non-compressed decoded image stored in the cache (S2002); the same time, the image processor reads the channel information containing the extracted timestamp demultiplexer relationship table (see FIG. 12) of the segment data (S2003), to find out channel information belongs currently received I frames, the decoded image was taken out and reduced into a thumbnail from the cache, arranged guides screen (S2004); final displayed on the screen, and until a new user command, the above steps continuously, constantly updated guides screen (S2005). 由于所有缩略图事实上都是完整的I帧缩小而成的,因此可以使图像处理器控制为,用户可选中某个缩略图并将其切换成全屏大小进一步仔细观看。 Due to the fact that all the thumbnails are complete I-frame is made narrow, so you can make the image processor control, the user can select the thumbnail for a switch to full-screen size and more carefully watched.

[0087] 另外,根据本发明,可以提供在网络节点上生成视频导视频道信息的导视信息生成器和对含有视频导视信息生成器生成的导视频道在接收端进行回放的设备。 [0087] Further, according to the present invention, channel guides may be provided to generate video information on a network node information generator guides and guides containing guides channel video information generated by the generator at the receiving end of the playback device. 下面就对该视频导视频道信息的导视信息生成器和回放设备进行说明。 Here's the video guides channel information generator information guides and playback device is described.

[0088] 图25显示了导视信息生成节点上视频导视信息生成器的结构。 [0088] Figure 25 shows a bumper structure of the video information generating node information generator of guides. 与第一实施方式不同在于用视频下变换器2508替代了帧选择器107,用于将输入的视频码流的尺寸缩小成便于直接拼接成导视图的缩略图视频,并作为ES输出发送给复用器2510。 The first embodiment except that the down converter 2508 instead of the video frame selector 107 for the size of the input video stream is reduced to facilitate direct spliced into guides a thumbnail video, and sent as an output to the multiplexing ES Appliances 2510. 这样,进入复用器2510的数据包括:原本在该TS流中的所有节目数据,视频下变换器输出的所有有效节目视频的对应缩略视频ES流。 Thus, entering data multiplexer 2510 include: All program data in the original TS stream, corresponding video converter output all valid ES program video thumbnail video streams. 复用器2510将该缩略ES流与原来该TS流中的数据复用为新的TS流。 The abbreviated ES stream multiplexer 2510 with the original data in the TS stream multiplexing for the new TS stream. 这样每个TS流中就增加了所有频道的缩略图频道。 So that each TS stream channels increases the thumbnails of all channels. 频道数量与该子网的有效电视频道数相等。 Equal to the number of channels and the effective number of television channels that subnet.

[0089] 接收端的结构如图26所示。 [0089] The structure of the receiving side shown in Figure 26. 与第一实施方式的接收装置不同在于用多路解码器2604替代了解码器1904,用以同时解码多路压缩视频数据流。 And the receiving apparatus of the first embodiment except that the multi-channel decoder 2604 replaces the decoder 1904, for simultaneously decoding multiple compressed video data stream. 图27说明了接收端中多路解码器2604和图像处理器2605的处理过程和数据格式的变化。 Figure 27 illustrates the variation in the receiving end in the multiplexer 2604 and decoder 2605 of the image processor processing and data format. 进入多路解码器2604的多路视频包是交替串行的,输出到图像处理器2605的解码缩略图视频数据在每一帧的间隔内对应所有的视频频道,图像处理器2605把缩略图图像排列在屏幕上,并且在每一帧时长内,对所有缩略图进行刷新。 Entering the multi-channel decoder 2604 is a multi-channel video packets alternate serial output to the image processor 2605 decodes the video data of the thumbnail of each frame in the interval corresponding to all of the video channels, the image processor 2605 thumbnail image are arranged on the screen, and the length of time in each frame, the thumbnails of all refreshed.

[0090] 类似第一实施方式中的讨论,视频导视信息可以通过将所有频道的缩略图视频流复用在当前所有的TS流中,也可以将它们复用在一个新的独立TS流中,成为独立的导视TS流。 [0090] similar to the first embodiment of the discussion, video guides information can be obtained by thumbnail video stream all channels multiplexed on all current TS stream, or they can be reused in a new independent TS stream become independent guides TS stream.

[0091] 虽然以上结合附图和实施例对本发明进行了具体说明,但是可以理解,上述说明不以任何形式限制本发明,本领域技术人员在不偏离本发明的实质精神和范围的情况下可以根据需要对本发明进行变形和变化。 By [0091] While the above embodiments of the accompanying drawings and the present invention has been specifically described, it is understood that the above description does not limit the invention in any way, those skilled in the art without departing from the true spirit and scope of the present invention may be the case The present invention according to need modification and variations. 这些变形和变化均落入本发明的范围内。 These modifications and variations are within the scope of the present invention.

Patentzitate
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US2003/0014752 Titel nicht verfügbar
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Klassifizierungen
Internationale KlassifikationH04N21/236, H04N21/434
Juristische Ereignisse
DatumCodeEreignisBeschreibung
10. Juni 2009C06Publication
5. Aug. 2009C10Request of examination as to substance
1. Mai 2013C14Granted