CN1545790B - 基于被捕获实况广播频道的互联网流的广播视频频道冲浪系统 - Google Patents
基于被捕获实况广播频道的互联网流的广播视频频道冲浪系统 Download PDFInfo
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Abstract
一种用于查看广播频道的方法。该方法包括:在第一站点处以比它的广播质量降低的质量捕获至少一个广播频道;在第二站点处接收该至少一个降低质量的广播频道,该第二站点远离该第一站点;以及在该第二站点处查看该至少一个降低质量的广播频道。优选地,降低质量的广播频道在对应于一个互联网地址的视频服务器处被捕获,并且通过无线传输而从互联网被下载到蜂窝电话、PDA等。
Description
发明背景
1.发明领域
本发明总地涉及用于查看广播频道的设备和方法,更具体地,涉及用于查看在视频服务器上以降低的质量捕获且在设备上接收以便查看的广播频道的设备和方法,其中该设备优选地是无线通信设备。
2.现有技术
在本领域中,已经知道在电视中使用“画中画”(PIP)特性来给予观众一种在查看另一个广播频道的同时观看一个广播频道的能力。典型地,具有PIP特性的电视机需要两个调谐器,一个调谐器显示所观看的主广播频道,以及第二个调谐器用于显示被查看的另一个广播频道。通常,来自第二调谐器的显示内容在电视屏幕的一小部分中被显示。
PIP的一个显著缺点在于,它干扰主频道的观众,并且在电视机中需要第二调谐器,以便在观看一个频道的同时浏览其它频道。另外,PIP不支持在家庭以外进行频道浏览。
发明概要
所以,在技术上有一种需要:以降低的质量观看(可替换地,在这里称为“冲浪”或“浏览”)广播频道,诸如以慢的帧速率和/或低分辨率观看。这个需要在以下的情形下特别重要:
(1)当第一个人或第一组人员正在观看广播电视频道时,第二个人可用手持设备浏览其它频道(这样他或她就不会干扰第一个人或第一组人员);以及
(2)当用户在他或她的家的外面时,他或她可以在PDA或蜂窝电话上通过无线连接检验电视频道或其他广播频道。
所以,本发明的一个目的是提供一种用于在观看主频道的同时浏览广播频道而不需要另一个用于被浏览的频道的调谐器的方法。
本发明的另一个目的是提供一种不干扰主频道的观众的、用于在观看一个主频道的同时浏览其它广播频道的方法。
本发明的再一个目的是提供一种可远程地完成的、用于在观看一个主频道的同时浏览其它广播频道的方法。
因此,提供了一种用于查看广播频道的方法。该方法包括:在第一站点处以比它的广播质量降低的质量捕获至少一个广播频道;在第二站点处接收该至少一个降低质量的广播频道,该第二站点远离该第一站点;以及在该第二站点处查看该至少一个降低质量的广播频道。
优选地,捕获步骤包括在对应于至少一个互联网地址的至少一个视频服务器处捕获至少一个降低质量的广播频道;以及接收步骤包括接入该至少一个互联网地址以及从那里下载该至少一个降低质量的广播频道。
该至少一个降低质量的广播频道优选地包括多个降低质量的广播频道,其中接收步骤优选地包括从该至少一个互联网地址多播多个降低质量的广播频道。可替换地,接收步骤包括在第二站点接收该至少一个降低质量的广播频道的无线传输。
该至少一个广播频道优选地是广播电视频道,以及降低的质量是较低的速度和/或较低的分辨率。
还提供了用于查看广播频道的系统。该系统包括:捕获装置,用于在第一站点处以从它的广播质量降低的质量捕获至少一个广播频道;接收装置,用于在第二站点处接收该至少一个降低质量的广播频道,该第二站点远离第一站点;以及查看装置,用于在第二站点处查看该至少一个降低质量的广播频道。
捕获装置优选地包括对应于至少一个互联网地址的视频服务器,并且接收装置优选地包括用于接入该至少一个互联网地址的接入装置和用于从那里下载该至少一个降低质量的广播频道的下载装置。优选地,互联网是通过无线传输被接入的。
再提供了一种用于查看广播频道的设备。该设备包括:接收装置,用于以比先前在远端站点处捕获的广播质量降低的质量接收至少一个广播频道;以及查看装置,用于查看该至少一个降低质量的广播频道。
接收装置优选地包括用于接入该至少一个互联网地址的接入装置和用于从那里下载该至少一个降低质量的广播频道的下载装置。优选地,在第二站点处通过该至少一个降低质量的广播频道的无线传输而接入互联网。该查看装置优选地是与该设备集成在一起的、用于显示降低质量广播电视频道的显示器。
附图简述
参考以下的说明、所附权利要求和附图,将更好地了解本发明的设备和方法的这些和其他特性、方面与优点,其中:
图1显示本发明的、用于查看广播频道的系统的优选实施方案。
图2A示出其上显示有一个广播频道的图1的无线通信设备。
图2B示出其上显示有多个广播频道的图1的无线通信设备。
优选实施例详细描述
虽然本发明可应用于许多和各种类型的广播频道,但已经发现它实际上在广播电视频道的环境下是有用的。所以,在不将本发明的应用性限制于广播电视频道的情况下,本发明将在这样的环境下进行描述。
现在参考图1,图上显示了用于查看广播频道的系统的优选实施方案,该系统总的用参考数字100来表示。系统100包括捕获装置,用于在第一站点处捕获至少一个广播频道。优选地,捕获多个广播频道,例如本地电视广播频道(ABC、CBS、NBC、FOX等等)和/或有线广播频道(HBO、DISNEY、ESPN等等)。然而,电视广播频道仅仅是作为例子给出的,因此没有限制本发明的范围或精神。例如,也可以捕获无线广播频道,或只捕获电视广播频道的音频部分。
在广播频道是电视广播频道的场合,捕获装置优选地是视频服务器102。因此,电视广播频道被输入到视频服务器102。优选地,视频服务器把广播频道提供到至少一个互联网地址104。然而,也可以使用许多互联网地址,每个地址相应于预定数目的广播频道,或者每个地址相应于单个广播频道。
广播频道以比它们的广播质量降低的质量被提供到互联网地址。例如,在广播频道是电视广播频道的场合下,它们可以以降低的帧速度或降低的分辨率或者者以降低的帧速率和分辨率而被捕获。诸如通过降低广播频道的帧速度和/或它们的分辨率而降低广播频道的质量在本领域是熟知的,例如通过把适当的滤波器应用到视频广播频道输入端。
接收装置在远离捕获广播频道的远端站点处接收降低质量的广播频道。接收装置优选地是无线通信设备106,例如个人数字助理(PDA)或蜂窝电话。然而,可以使用其他接收装置,而不背离本发明的范围或精神,例如通过因特网服务供应商(ISP)112接入到互联网108的个人计算机110。
优选地,接收装置具有用于接入互联网地址104的装置,诸如web浏览器114(图2A和2B)。通过个人计算机提供互联网接入在本领域是熟知的。而且,通过诸如PDA或蜂窝电话之类的无线设备提供互联网接入在本领域也是熟知的,例如使用无线应用协议(WAP)的那些无线设备。
接收装置也包括用于从互联网地址下载该至少一个降低质量的广播频道的装置,诸如通过固定线路(诸如电缆或电话线116)或通过无线连接、经天线118和基站120进行通信的调制解调器(未示出)。用于下载数据的调制解调器在本领域是熟知的,因此在这里不作讨论。虽然在“下载”(其中,内容被第二站点拉取)与“流”(其中,内容被第一站点推送)之间可能有技术差别,但这里它们被同义地使用,即,用作数据传送。
优选地,接收装置也具有查看装置(诸如显示器122)用于查看具有降低质量的广播频道,和/或扬声器123用于重现音频广播频道和/或电视广播频道的音频分量。在接收装置是个人计算机108的场合下,显示器122和扬声器123包括计算机的监视器和内置的扬声器。在接收装置是无线通信设备106(诸如PDA或蜂窝电话)的场合下,显示器122和扬声器123优选地是被集成在该设备中的LCD和扬声器,这些LCD和扬声器并不是专用于本发明的系统100的。
现在参照图1、2A、和2B来描述本发明的系统100的运行。假设有100个电视广播频道是可提供的。多个视频服务器102以某个合理的速度和分辨率以及以某些标准格式(例如使用JPEG、MPEG1、或MPEG4格式)来捕获这些频道。
对于在无线通信设备106或个人计算机108处接收这些频道信号流的用户来说,有两个优选的选项。第一个是通过多播,其中视频服务器102在某些熟知的IP地址104上多播捕获的广播频道信号流。具有适当的多播客户的接收装置可“调谐”到这些地址并接收信号流。第二个选项是通过单播,其中,在接收装置可以接收广播频道信号流之前,在视频服务器102与接收装置之间建立专用连接。这两个选项可以用互联网视频流技术来实施,这些在本领域中是熟知的。
因此,本发明的方法提供了一种用于捕获广播频道和优选地通过互联网(宽带或窄带)把它们传送到有互联网能力的设备的方法。例如,如果用户站在超级市场的结帐线处,并且想要知道NBA比赛的分数和观看部分比赛。通过本发明的系统100,他或她可以使用无线通信设备106(诸如蜂窝电话或PDA)并拨号到具有NBA比赛广播的降低质量版本的网址104。无线通信设备首先联系它位于特定小区的基站120,该基站进而又联系ISP 112,ISP 112提供对互联网110的接入,并且最后接入到其中可接入NBA比赛广播的互联网地址104。在接收装置是个人计算机108的场合下,接收装置直接通过ISP 112接入到互联网110,这在本领域中是熟知的。
现在参照图2A和2B,图上显示了图1的无线通信设备106。然后,用户通过web浏览器114选择广播NBA比赛的频道124,并且激活该频道。广播频道马上以合理的速度(例如,每秒一帧)被馈送给用户。在观看降低质量的广播频道时,在无线接收装置的情形下保持低带宽要求是很重要的。因为观看的目的之一是对正常电视收看的补充(例如,使用户被更新给在其他的频道上正在广播的内容),所以把较少的、但优选地是“关键”的帧发送到接收装置。识别视频内容中的“关键”帧在本领域中是熟知的。
本领域的技术人员将会看到,通过本发明的系统,用户不受他们的电视机上调谐器数目的限制,而是由传送广播频道信号流的视频服务器102与接收装置之间的数据吞吐量限制。
一旦通过web浏览器114接入互联网地址,用户就可通过浏览器114选择观看在互联网地址104处可提供的任何广播频道。而且,可被浏览的广播频道是不限于本地的,这与只能捕获由本地业务提供者提供的节目的PIP相反。
通过本发明的系统100可以观看单个广播频道,如图2A的显示器122上显示的,或用户可通过在接收机显示器122上缓慢改变的频道的多个“简略图”126同时观看多个广播频道,如图2B所示。作为另一个替换例,浏览器114可循环通过预定的喜爱的广播频道,在每个频道停留几秒钟,或在循环到下一个频道之前等待用户的提示。
诸如有关电影和比赛的补充信息之类的附加业务可以连同广播频道的视频流一起被传送。补充信息然后连同降低质量的广播频道一起被显示。这样的信息可以具有音频和视频内容的形式,例如对在特定频道上当前广播的电影的口头或书面评论。在补充信息是音频或具有音频分量的场合下,音频优选地由与个人计算机108或无线通信设备106集成在一起的扬声器123重现。
虽然这里显示和描述了被认为是本发明优选实施例的部分,但是,当然应该理解,可以容易地在形式或细节上作出各种修正和改变而不背离本发明的精神。所以,本发明不打算局限于所描述和显示的完全一样的形式,本发明应当覆盖落入所附权利要求范围内的所有修正。
Claims (14)
1.一种用于查看广播频道的方法,该方法包括:
在对应于至少一个互联网地址(104)的至少一个视频服务器(102)处,在第一站点处以比它的广播质量降低的质量捕获多个广播频道;
能够在远离该第一站点的第二站点处观看该至少一个降低质量的广播频道;
通过接入该至少一个互联网地址(104)并从那里下载该至少一个降低质量的广播频道,能够在第二站点处接收该降低质量的广播频道;以及
能够利用手持设备在该第二站点处查看和浏览该降低质量的广播频道。
2.权利要求1的方法,其中,该至少一个降低质量的广播频道包括多个降低质量的广播频道,并且其中接收步骤还包括从该至少一个互联网地址(104)处多播该多个降低质量的广播频道。
3.权利要求1的方法,其中,接收步骤包括在第二站点处接收该至少一个降低质量的广播频道的无线传输。
4.权利要求1的方法,其中,该至少一个广播频道是广播电视频道,而降低的质量是较低的速度和较低的分辨率中的至少一项。
5.权利要求1的方法,还包括在第二站点处接收相应于该至少一个降低质量的广播频道的补充信息的步骤。
6.权利要求1的方法,其中,该至少一个降低质量的广播频道包括多个降低质量的广播频道,并且其中查看步骤包括浏览多个降低质量的广播频道。
7.权利要求6的方法,其中,查看步骤还包括以预定的速率循环通过预定数目的多个降低质量的广播频道。
8.一种用于查看广播频道的系统,该系统包括:
捕获装置,用于在第一站点处以比它的广播质量降低的质量捕获多个广播频道,其中该捕获装置包括对应于至少一个互联网地址(104)的视频服务器(102);
能够在远离该第一站点的第二站点处接收并观看该至少一个降低质量的广播频道的装置;
接收装置,用于在第二站点处接收该降低质量的广播频道,其中该接收装置包括用于接入该至少一个互联网地址(104)的接入装置以及用于从那里下载该至少一个降低质量的广播频道的下载装置;以及
查看装置,用于利用手持装置在第二站点处查看和浏览该至少一个降低质量的广播频道。
9.权利要求8的系统,其中,该至少一个降低质量的广播频道包括多个降低质量的广播频道,并且其中接收装置包括多播装置,用于从该至少一个互联网地址(104)处多播多个降低质量的广播频道。
10.权利要求8的系统,其中,接收装置包括用于在第二站点处接收该至少一个降低质量的广播频道的无线传输的无线接收装置(106)。
11.权利要求8的系统,其中,该至少一个降低质量的广播频道包括多个降低质量的广播频道,并且其中查看装置包括用于浏览多个降低质量的广播频道的浏览装置。
12.一种用于查看广播频道的设备,该设备包括:
接收装置,用于在对应于至少一个互联网地址(104)的至少一个视频服务器(102)处,以比先前在远端站点处捕获的其广播质量降低的质量接收至少一个广播频道,其中所述接收是通过接入该至少一个互联网地址(104)并从那里下载该至少一个降低质量的广播频道进行的;以及
查看装置,用于利用手持装置,在包括能够接收并观看至少一个广播质量的广播频道的装置的站点查看及浏览该至少一个降低质量的广播频道。
13.权利要求12的设备,其中,接收装置包括用于在第二站点处接收该至少一个降低质量的广播频道的无线传输的无线接收装置(106)。
14.权利要求12的设备,其中,查看装置是与该设备集成在一起的显示器(122),用于显示降低质量的广播电视频道。
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KR20040030991A (ko) | 2004-04-09 |
JP2005501482A (ja) | 2005-01-13 |
EP1421761A1 (en) | 2004-05-26 |
US20030041334A1 (en) | 2003-02-27 |
KR100934923B1 (ko) | 2010-01-06 |
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