CN1682530A - 按要求的电子节目指南视频片断预览 - Google Patents

按要求的电子节目指南视频片断预览 Download PDF

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CN1682530A
CN1682530A CNA028262999A CN02826299A CN1682530A CN 1682530 A CN1682530 A CN 1682530A CN A028262999 A CNA028262999 A CN A028262999A CN 02826299 A CN02826299 A CN 02826299A CN 1682530 A CN1682530 A CN 1682530A
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CN100559848C (zh
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S·C·贝茨
H·P·哈斯
A·弗兰肯
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InterDigital CE Patent Holdings SAS
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Abstract

一种被设计成提供电子节目指南(EPG)的互动电视系统，在该系统中，在对EPG的栏目引导从头到尾进行浏览和导航到一个加亮的节目标题单元、并且在预定的延时内保持在这样的加亮的单元后，通过自动发出视频片断预览，从而提供按要求的视频片断预览。显示处理过程是一个在进行浏览时不需要由观众选择的“非接触显示”过程。

Description

按要求的电子节目指南视频片断预览
                      发明领域
本发明涉及互动电视系统，更具体地，涉及包括电子节目指南(EPG)的互动电视系统，在从头到尾浏览EPG的栏目引导和对其进行导航的同时该电子节目指南显示视频片断预览。
                      发明背景
视频点播(VOD)系统通常具有图形化的(常常是HTML)预订菜单，它连同“电影海报”的静止图像，或节目内容的某些代表一起显示基于文本的节目描述。根据该预订菜单，存在有导航到一个“按钮”以启动对于节目的请求以及在节目被传递供观看之前确认花费具体美元数量的需要的手段。在某些情形下，根据该同一个预订菜单，在“预订”按钮旁边有“预览”按钮，用来执行免费预览的VOD传递。然而，节目与免费视频预览没有以软件相链接(逻辑地)的形式。作为替代，节目与免费视频预览被处理为请求和供给必须是互相独立地进行的两个分开的视频内容段。
在EPG和个人视频记录器(PVR)目录上缺乏视频预览内容是最大的缺点。因此，观众被提供有限的或很少的有关可获得节目的信息，并且给内容拥有者提供了很少的方式用于在这个媒体上促销它们的内容。虽然例行地存在有电影和即将要广播的广播电视节目的视频预览，但它们是在广告间隙期间被广播的。无法保证对这种内容感兴趣的观众实际上会在这些广告间隙看到播放的内容。因此，广播商和/或节目拥有者只有有限的向潜在观众推销他们节目的方式，以及必须购买或分配许多广告时间间隙来充分提高让感兴趣的观众知道它们的内容和对这些内容感兴趣的机会。按要求的视频片断(clip)预览的可获得性将以成本更加经济的方式帮助观众知道即将广播的节目并对这些节目感兴趣，这种成本更加经济的方式提高观众的娱乐经验。
即使当视频预览是可获得的时候，诸如在VOD例子中，仍旧有某些缺点：观众必须明确地按压按钮以接入到视频预览，然后回到预订菜单，并且再按压按键以预订节目，而这些是烦琐的。鉴于上述的情形，对于互动电视系统存在有一种持续的需要：在预定的延时后，并且假设观众想要看视频片断预览(如果可提供的话)，于是该系统通过自动发出电子节目指南(EPG)的加亮的节目标题单元的视频片断预览来提供按要求的视频片断预览，由此使得购物、导航和浏览经历更加方便和有趣。
而且，对于互动电视系统有一个持续的需要：即把视频片断预览与它的相关的“目的地内容”相链接来进一步便于在现在或将来进行观看、预订、或记录“目标(destination)”节目。
                      发明概要
一种具有电子节目指南(EPG)的互动电视系统，在该系统中，在对EPG的栏目引导从头到尾进行浏览和导航到一个加亮的节目标题单元、并且在预定的延时内保持在这样的加亮的单元后，通过自动发出视频片断预览从而提供按要求的视频片断预览。
                      附图简述
图1A示出按照本发明的电子节目指南。
图1B示出显示视频片断预览的、按照本发明的电子节目指南。
图1C示出全屏幕视频片断预览。
图2显示本发明的遥控装置。
图3是显示按照本发明的、用于显示视频片断预览的处理过程的流程图。
图4显示按照本发明的互动电视或广播系统。
                    发明详细描述
图1A和1B显示在显示屏幕18上显示的、按照本发明的电子节目指南(EPG)12的EPG栏目引导14。EPG栏目引导14包括多个节目标题单元16，这些节目标题单元在显示的安排时间内来显示频道22的节目的节目标题。当在EPG栏目引导14内导航时，显示节目标题的节目标题单元16’可被加亮。通过使用在遥控器30上的向上/向下/向左/向右导航按钮32(图2)，观众通过EPG栏目引导14导航，不单发现当前正在广播的内容，而且还发现在不久的将来计划要广播的节目。现在，某些EPG存储多达14天的这种将来的节目。通常，所显示的EPG栏目引导14是单个显示页并且典型地包括表示多达14天的将来节目的多个页。
虽然EPG栏目引导14具有许多格式，但许多EPG栏目引导14具有较小的显示窗口20A被使用来显示当前调谐的节目，其中当前调谐的节目在选择和显示EPG栏目引导14之前被显示在显示屏幕18上。因此，对于即将来临的节目，当观众导航和浏览EPG栏目引导14时，当前调谐的节目的情景不一定丢失。在一个实施例中，当显示窗口20A被装载时，显示窗口20A被使用来显示视频片断预览28。
在另一个实施例中，第二显示窗口20B(以透视图显示)同时显示窗口20A中显示的当前调谐的节目与视频片断预览28。然而，当正在显示视频片断预览28时，用于视频片断预览28的音道处于支配地位。显示窗口20A和20B以相似的方式起到图像和图像显示的功能，但具有视频图像的不同的相对缩放和不同的图形组合。
当观众对EPG栏目引导14和加亮的节目标题单元16’从头到尾导航和浏览时，显示出说明性文本(这些说明性文本有时被称为与这些节目标题相关的“元数据”)。同样地，在观看所述内容期间，如果观众诸如通过按压与向上/向下/向左/向右导航按钮32相邻的“INFO”按钮34作出选择，则显示出与这样的节目标题有关的同一说明性文本。
遥控器30还包括“引导”按钮44，用来在显示屏幕18上发出EPG12。而且，遥控器30包括频道向上/向下和音量向上/向下按钮38、数字键盘40、包括“记录”按钮46的VCR控制按钮42。遥控器30还包括其他按钮，用于接通和关断显示屏幕18和用于执行其他常规的功能。在播放视频片断预览28期间或在播放视频片断预览28后，如果节目与视频片断预览28有关，则观众可选择记录任选项。记录任选项可记录被安排在将来或现在广播的、与视频片断预览28有关的节目。
现在参照图3，图上显示按照本发明的、用于显示视频片断预览的处理过程100的流程图。处理过程在步骤102开始，其中EPG栏目引导14被显示在显示屏幕18并且当前调谐的节目被显示在较小的显示窗口20A。步骤102后面接着是步骤S104，在步骤S104作出观众是否正在导航的决定。如果决定是“否定”，则处理过程100在步骤102继续，来显示EPG栏目引导14和当前调谐的节目。然而，如果决定是“肯定，则步骤102后面接着进行步骤S106，在步骤S106响应于导航，单元被加亮。
步骤S106后面接着是步骤S108，在步骤S108作出视频片断预览对于单元16’(换句话说，对于节目标题)是否是可获得的决定。此外，节目标题单元16中具有可供观看的视频片断预览28的那些单元可被着色、加粗或以某种方式区分开，以便向消费者提供这种可获得性的指示。如果决定是“否定”，则步骤108后面接着进行步骤S110，在步骤S110小的显示窗口20A继续显示当前调谐的节目。然而，如果决定是“肯定，则步骤108后面接着进行步骤S112，在步骤S112作出对于预定的延时(诸如1秒，但不局限于此)是否将单元加亮的决定。如果决定是“否定”，则步骤112后面接着进行步骤S110，在步骤S110小的显示窗口20A继续显示当前调谐的节目。然而，如果决定是“肯定，则步骤112后面接着进行步骤S114，在步骤S114把对于视频片断预览28的请求发送到VOD服务器或头端，发出视频片断预览28。
在另一个实施例中，预定的延时用“一次接触显示”格式替换，其中观众必须主动请求视频片断预览28，诸如通过按压如下面详细描述的“预览”按钮36。替代“预览”按钮36，一个虚拟“预览”按钮可被提供在EPG栏目引导14上或某些其他装置上用于选择预览任选项以显示可获得的视频片断预览。希望通过消除不“实际”的那些请求而保留网络带宽的网络运营商可能喜爱本实施例，这是以牺牲观众的方便为代价。
步骤114后面接着是步骤S116，在步骤S116装载消息或图标24被显示，用来立刻通知观众将被显示的视频片断预览。步骤116后面接着是步骤S118，在步骤S118视频片断预览28被显示在小的显示窗口20A或可任选的显示窗口20B上，其中视频片断预览28的声道占支配地位并且被听见。如果只提供一个显示窗口20A，则装载消息或图标24被显示在这样的窗口上或紧靠该窗口附近处。
在再一个替换实施例中，可获得的视频片断预览28的静止图像可以显示在小的显示窗口20B上。在这样的替换实施例中，装载消息或图标24可以是任选的。装载消息或图标24或可替换的视频片断预览的静止图像提供了通知观众即将来临的视频片断预览28的显示的一种方式。
鉴于上述内容，在预订的延时后，本发明通过自动发出加亮的节目标题单元16’的视频片断预览28而提供按要求的视频片断预览。当单元16’对于所述预订的延时保持为加亮时，如果视频片断预览28是可获得的话，则假设观众想要观看与单元16’有关的视频片断预览28。因此，观众不必作出任何选择(按压任何按钮)，来显示可获得的视频片断预览。因为观众只需要操纵和浏览来加亮节目标题的单元，以请求可获得的视频片断预览，所以这样的显示过程被称为“非接触显示”过程。“非接触显示”过程根据在所述预定的延时过去之前实施的、节目标题单元16’被加亮的假设原理发出视频片断预览28。
现在参照图1C和2，遥控器30配备有“预览”按钮36，它允许观众在全屏幕显示18上显示视频片断预览28。可替换地，或除了“预览”按钮36以外，遥控器30允许观众导航到显示窗口20B并且选择视频片断预览28。在选择显示的视频片断预览28后，视频片断预览28被显示在全屏幕显示18上。因此，本发明提供用于观看视频片断预览的“一次接触全屏幕显示”任选项。
在其中使用“一次接触显示”格式的实施例中，观众通过按压“预览”按钮36而主动请求视频片断预览28。此后，视频片断预览28被显示在全屏幕显示18上。
在VOD系统中，对于视频片断预览28的请求被发送到位于局域网的、相当接近于用户家庭的一个或多个VOD服务器。典型地，VOD服务器被使用来预备全长度特性影片。现在，VOD服务器将服务于有限数目的本地用户，大约是在1000个本地用户左右，假设使用率为约10％。这些服务器在设计上可被专用化，以服务于短形式的视频内容，在“基本时间”期间同时使用率百分数接近90％。
当视频片断预览28按“全屏幕”格式被观看时，视频片断预览28可以从开始播放到结束。此后，显示屏幕18自动回复以显示EPG栏目引导14，或可替换地，显示VOD/投币式自动电唱机预订菜单(未示出)。对于与预订的电影有关的视频片断预览28来讲后者是优选的。
在优选实施例中，视频片断预览28可被限制于父母控制。传统上，EPG建立，诸如Direc TV用户接口，具有不需要使用密码的通用目的的用户简档。其它的用户简档要求密码。例如，通常的“家庭”用户简档可以在内容分级方面具有限制，以排除某些内容分级，例如，PG-13，R，或X，节目。因此，与PG-13，R，或X级节目标题有关的视频片断预览28被排除在这些简档之外。可替换地，EPG 12可以具有虚拟“按钮”作为EPG栏目引导14的一部分，以启动节目的记录。
现在参照图4，本发明的互动电视或广播系统10包括遥控器30，显示屏幕18和被耦合到节目传递系统5的EPG 12。节目传递系统5可包括电缆头端、卫星系统和/或至少一个VOD服务器。如可以理解的是，显示屏幕18包括电视机、PC监视器等等。此外，电视可以是现成的电缆电视或可以耦合到电缆盒或其他用于记录、预订显示屏幕18、并与显示屏幕18互动的设备。
EPG 12把视频片断预览18链接到目的地内容(节目)，以便目的地内容(节目)可被观看、预订、记录或在观看与它有关的视频片断预览期间启动该目的地内容(节目)。本发明把预期的命令诸如由RTSP概述的预订协议嵌入到视频片断预览28的上下文。
在一个实施例中，多个视频片断预览28可被预先装载到机顶盒装置内的硬盘驱动器，以加速装载和播放这样的预览，从而克服了网络拥挤。
鉴于上述的说明，对于本发明的大量修正和替换实施例对于本领域技术人员将是显而易见的。因此，本说明应当被认为仅仅是说明性的并且是出于教导本领域技术人员来实施本发明最好模式的目的。结构的细节可以很大地变化在基本上没有背离本发明精神的情况下可以进行结构细节上的改变，并且保留了落入附属权利要求书范围的所有的修改。

Claims (20)

1.一种互动电视/广播系统，包括：
显示屏幕；
电子节目指南(EPG)，具有至少一个显示窗口和一个栏目引导，该栏目引导包括在显示屏幕上显示的多个节目标题单元，其中在从头到尾浏览和导航栏目引导以便加亮一个节目标题单元、并且在预定的延时内保持在加亮的节目标题单元后，EPG通过自动发出视频片断预览而按要求在至少一个显示窗口上显示视频片断预览。
2.按照权利要求1的系统，其中该至少一个显示窗口包括第一显示窗口，用于显示当前调谐的节目，和第二显示窗口，用于显示视频片断预览，其中该视频片断预览的音道是可听的。
3.按照权利要求2的系统，其中如果在显示视频片断预览之前该视频片断预览对于加亮的节目标题单元是可获得的，则第二显示窗口立即显示视频片断预览的静止图像。
4.按照权利要求2的系统，其中至少一个显示窗口显示代表即将来临的视频片断预览的装载消息或图标。
5.按照权利要求2的系统，还包括遥控器，该遥控器具有用于导航到至少一个显示窗口和选择至少一个显示窗口来将视频片断预览显示在显示屏幕上的装置。
6.按照权利要求1的系统，还包括遥控器，该遥控器包括：
导航按钮，用于通过对栏目引导从头到尾进行浏览和导航；以及
预览按钮，用于在显示屏幕上选择显示视频片断预览。
7.按照权利要求6的系统，其中遥控器还包括记录按钮，用于记录节目，该节目具有与其有关的适合于被显示在至少一个显示窗口的视频片断预览。
8.按照权利要求1的系统，其中EPG包括用于排除至少一个内容级别的节目和相关视频片断预览的至少一个用户简档。
9.按照权利要求1的系统，其中多个节目标题单元中具有与其有关的视频片断预览的那些节目标题单元在外观上与不具有相关的视频片断预览以指示该视频片断预览的可获得性的其他节目标题单元是不同的。
10.一种显示按要求的视频片断预览的方法，包括以下步骤；
在显示屏幕上显示电子节目指南(EPG)，该电子节目指南具有至少一个显示窗口和栏目引导，该栏目引导包括多个节目标题单元；
对栏目引导从头到尾进行浏览；
在浏览步骤期间，加亮节目标题单元；以及
在加亮步骤期间，当加亮的节目标题单元在预定的延时内保持加亮时，在至少一个显示窗口上自动显示视频片断预览。
11.按照权利要求10的方法，其中至少一个显示窗口包括第一显示窗口和第二显示窗口，以及
还包括以下步骤：
在第一显示窗口上显示当前调谐的节目；以及
在第二显示窗口上显示视频片断预览；
与视频片断预览的显示步骤同时地播放视频片断预览的音道。
12.按照权利要求11的方法，还包括在显示视频片断预览的步骤之前的以下步骤：如果视频片断预览对于加亮的节目标题单元是可获得的，则在第二显示窗口上显示视频片断预览的静止图像。
13.按照权利要求11的方法，还包括以下步骤：在至少一个显示窗口上显示代表即将来临的视频片断预览的装载消息或图标。
14.按照权利要求11的方法，还包括以下步骤：导航到至少一个显示窗口以及选择该至少一个显示窗口以便将视频片断预览显示在屏幕上。
15.按照权利要求10的方法，还包括以下步骤：选择预览按钮和在屏幕上显示视频片断预览。
16.按照权利要求10的方法，还包括以下步骤：选择用于记录节目的记录任选项，其中该节目具有与其有关的适合于被显示在至少一个显示窗口上的视频片断预览，并且其中在播放视频片断预览期间或以后可以执行选择。
17.按照权利要求16的方法，其中记录任选项可记录与被安排在将来或现在进行广播的视频片断预览有关的节目。
18.按照权利要求10的方法，还包括以下步骤：
确定用于EPG的被控制的安排的节目的用户简档；以及
限制该被控制的安排的节目的内容级别，以排除与该至少一个内容级别类型的节目有关的至少一个节目和视频片断预览的内容级别类型。
19.一种互动电视/广播系统，包括：
具有显示屏幕的显示屏幕设备；
电子节目指南(EPG)，具有至少一个显示窗口和栏目引导，该栏目引导包括多个显示在显示屏幕上的节目标题单元，其中当选择预览任选项时EPG显示按要求的全屏幕视频片断预览。
20.按照权利要求19的系统，还包括遥控器，用于控制显示屏幕设备和选择预览任选项。
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