CN1786961A - 视频显示器 - Google Patents

视频显示器 Download PDF

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CN1786961A
CN1786961A CNA2005101298555A CN200510129855A CN1786961A CN 1786961 A CN1786961 A CN 1786961A CN A2005101298555 A CNA2005101298555 A CN A2005101298555A CN 200510129855 A CN200510129855 A CN 200510129855A CN 1786961 A CN1786961 A CN 1786961A
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D·W·特雷佩斯
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Sony Europe BV United Kingdom Branch
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    • G11B27/3081—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is a video-frame or a video-field (P.I.P)
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    • H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
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  • Engineering & Computer Science (AREA)
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  • Theoretical Computer Science (AREA)
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  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Databases & Information Systems (AREA)
  • Data Mining & Analysis (AREA)
  • Software Systems (AREA)
  • Computational Linguistics (AREA)
  • User Interface Of Digital Computer (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

一种用于显示一个或多个候选视频项的目录供重放的视频显示设备，在目录中通过具有至少一个所显示代表图像的目录条目所表示的各视频项包括可用于通过选择－拖拉操作对所显示目录条目调整大小的用户控制装置；以及响应目录条目的大小调整而选择多个不同代表图像以便相对于那个视频项进行显示、使得所显示的数量随着增加的目录条目大小而增加、同时各代表图像的显示大小相对目录条目大小的变化实质上保持恒定的部件。

Description

视频显示器
技术领域
本发明涉及视频显示器。
背景技术
在视频显示系统、例如基于计算机的视频显示系统中，通常难以让用户了解什么视频材料可用于查看而无需浪费大量时间人工搜索材料。
已经提出采用所谓的代表图像(常常称作“缩略图”或“关键帧”)来表示一段视频材料的内容。代表图像通常取自一段材料中的固定点，例如第一帧。在一长段材料中，这种单一图像可能不提供对于材料的整体内容的良好指示。具体来说，序列的第一图像可能无效-例如空白图像或测试图案。
为了解决这个问题，已经提出可采用多个代表图像。M.Guillemot等人的“通过互联网浏览视频的分层关键帧用户界面”的论文(IDIAP-COM 03-02，2003年8月)公开了一种配置，用户借此可选择一级或两级增加的细节，其中的每个提供更多数量的代表图像。
发明内容
本发明提供一种用于显示一个或多个候选视频项的目录供重放的视频显示设备，各视频项在目录中通过具有至少一个所显示代表图像的目录条目来表示；该设备包括：
用户控制装置，可用于通过选择-拖拉操作对所显示目录条目调整大小；以及
响应目录条目的大小调整而选择多个不同代表图像以便相对于那个视频项进行显示、使得所显示的数量随着增加的目录条目大小而增加、同时各代表图像的显示大小相对目录条目大小的变化实质上保持恒定的部件。
在本发明的实施例中，只通过一次快速交互，用户便可询问视频项的内容，其程度可让他们查看到足够的内容以便判定是否查看视频项，从而让他们满意。
当用户展开目录条目时，系统智能地采用那个视频项的更多代表图像来填充空间。用户展开的目录条目越多，则他们查看到更多信息。这种扩展性使用户可以查看他们进行媒体是否是他们正寻找的判定所需的内容。当他们看到足够内容时，他们便结束选择-拖拉操作(例如从鼠标上抬起他们的手指)，并转移到下一个操作。
本发明使用户可以快速询问目录，而无需开启界面中的另一个屏幕或面板(例如“更多信息”、“详细情况”、“情节串连图板”等)。
Guil lemot等人的论文为用户提供目录列表。紧挨着每个代表图像的是“+”按钮。用户必需点击“+”按钮以查看代表图像表示的项目的情节串连图板。紧挨着各另一个图像的是另一个“+”按钮，用户点击此按钮来提供另一个图像之下的快照细目分类。应当注意：
(a)这要求3次交互来询问单一项目，并且可能是一个缓慢的过程。
(b)“+”按钮类似于“更多信息”或“情节串连图板”按钮，并且看来不会增加优于传统情节串连图板的任何好处。
(c)系统向用户显示的代表图像的数量是固定的，使得用户不可以选择他们已经查看到足够内容的时间。
本发明采用有利的一流灵活便捷的用户界面配置来解决这些缺陷，使用户可以通过简单的选择-拖拉操作来改变他查看的信息数量。
本发明的其它相应方面在所附权利要求书中定义。
附图说明
通过以下结合附图对说明性实施例的详细说明，本发明的上述和其它特征及优点将会非常明显，附图包括：
图1示意说明视频重放系统；
图2示意说明显示屏幕；
图3A至3D示意说明可调整大小的目录条目；
图4示意说明一组代表关键帧；以及
图5A至5E示意说明另一组代表关键帧。
具体实施方式
图1是基于通用计算机10的视频重放系统的示意图，其中具有包括程序和数据的磁盘存储器30、连接到诸如以太网或因特网等的网络50的网络接口卡40的处理器单元20、诸如阴极射线管装置60等的显示装置、键盘70以及诸如鼠标80等的输入装置。系统在程序控制下进行工作，程序存储在磁盘存储器30中，以及例如通过网络50、可移动磁盘(未示出)或者在磁盘存储器30中预先安装来提供。
图2示意说明例如在显示器60上显示的显示屏幕。为了清楚起见，显示屏幕的所有特征不一定全部示出，但重要的特征为：播放器窗口100、视频播放器控件110以及含有代表关键帧(图像)130的目录区域120。
各代表关键帧130对应于不同的相应视频材料段。关键帧例如可以是相应视频项的第一图像，或者可通过诸如色调直方图的分析等的统计技术作为“最具代表性的”图像导出。这类技术是已知的，不需要在本描述中进一步说明。
用户可通过把鼠标指针放置于关键帧130上并进行单次“点击”来选择视频材料的项目。这会使所选视频项的第一帧以“暂停”方式显示在重放窗口100中。然后可通过从控件110中选择播放控件来开始重放。
或者，在关键帧130上的“双击”使得在查看窗口100中开始(从头开始)相应视频项的回放。
目录120中的每个条目(关键帧)可调整大小。图3A至3D示意说明可调整大小的目录条目以及大小调整技术背后的目的。
参照图3A，示出关键帧130。为了使这个关键帧在图3A至3D中被沿用，关键帧标记为关键帧(A)。
采用鼠标指针160，用户可“抓取”(点击保持)关键帧130，并对它调整大小。这在实际上不改变初始关键帧A的大小或位置，而是打开窗口、区域或框150(称作“框”，但不一定将它限制为矩形)，它在展开时容纳更多关键帧。
因此，在图3B中，包含另一个关键帧132(标记为“B”)。在图3C中，框150已经被展开，以致于包含另外两个关键帧134和136(“C”和“D”)。在图3d中，框150的形状已经改变，使得包含另外两个关键帧138和140。注意，它们标记为“E”和“F”，尽管实际上可能是关键帧“C”和“D”。但是，它们不必与“C”和“D”相同。
一般来说，在这个过程中，一旦已经在相对初始关键帧130的某个显示位置上显示关键帧，它继续被显示，只要框150大到仍然足以包含它。
关键帧最好是仅作为整体关键帧被添加。也就是说，随着框150展开，当它通过大到足以包含一个或多个另外的关键帧的阈值大小时，那一个或多个另外的关键帧在单个步骤中被添加。也就是说，不显示部分关键帧。但是，相反的情况无疑是可能的，使得当框少量展开时，显示相应的少量新显示关键帧。
下面参照图4和图5来描述关键帧“B至F”的起源。
再参照图2，可以看到，对于至少一些关键帧130，当框150从关键帧展开时，它可能遮掩显示的其它重要部分。但是，在本实施例中，一旦关键帧中的一个被选取以便开始重放，框150即消失，因而可再次看到查看窗口。
显示为框150的关键帧从视频项的不同部分被扩展。因此，当框展开时，为用户提供视频项的整个内容的加深印象。另外，假定各关键帧在视频项中具有相应的时间位置，优选的是，当选取关键帧(通过上述点击或双击操作)时，建立或开始视频重放，自对应于那个关键帧的时间位置开始。因此，关键帧提供到视频材料中的不同时间位置的链接。同样，这对于尝试快速浏览视频材料段的用户可能极为有用。
基本上，可采用这种技术来显示任何数量的关键帧。当与关键帧的大小进行比较时，限制无疑是显示屏幕60上可用的图像大小。关键帧最好是当框150展开时保持相同大小，也就是说，关键帧的数量增加，但各关键帧的大小既不增加也不减小。
图4示意说明从视频材料项中导出的一组代表关键帧。视频项由水平条200表示，其中的时间沿水平方向继续。垂直条210示意说明如已知的画面变化检测算法所检测的视频材料中的画面变化。对10的画面变化把视频项200分为相应段，以及对于各相应画面导出关键帧G...L。(这可能例如是各画面的中心帧，或者例如是各画面的“最具代表性”帧，如上所述)。
排列顺序与关键帧G...L关联。这个顺序规定，关键帧中的一个(例如来自第一画面-G-的关键帧)被选择为目录120中显示的单一关键帧130。此后，顺序与关键帧关联，使得框50被展开时，关键帧以连续顺序显示。顺序例如可使得关键帧以画面长度的顺序排列，或者以材料等中的画面位置排序)。如果材料中没有充分的画面来提供可显示的关键帧的数量，则例如可通过取画面中间隔开的帧，从各画面中导出多关键帧。
用于驱动关键帧以便显示的另一种技术如图5A至5E所示。在这里，第一关键帧M被看作视频材料的第一帧。在图5B中，第二关键N被看作材料的最后帧。当需要第三关键帧0时，它被看作材料的中间(或最接近中部)关键帧。
在图5D和图5E中，可以看到，现在各种选项呈现它们自己。在需要第四关键帧时，一个选项是细分两个现有关键帧之间的间隙，从而提供新的关键帧P。这表示下一个关键帧位置在图5D中将为位置220。这种配置的优点在于，已经显示的关键帧不会通过新关键帧P的添加而改变。但是，一个备选方案如图5E所示，其中，在各级，在添加一个或多个新的关键帧时，关键帧被洗牌，使得它们在视频材料中在时间上等距。这表示来自图5C的前一个关键帧0停止显示，而提供新的关键帧0’和P’。它的优点在于，在任何级，在屏幕上显示的关键帧为等距，因此应当提供对视频材料中的内容极良好的表示。
本发明可通过软件、可编程硬件(例如FPGA、ASIC)、硬件或其组合来体现。在软件组件的情况下，本发明还包括提供这种软件的提供(例如存储、传送)媒体。
虽然本文参照附图对本发明的说明性实施例进行了详细描述，但大家要理解，本发明不限于那些具体的实施例，本领域的技术人员可以对其进行各种变更和修改，而没有背离所附权利要求定义的本发明的范围和精神。

Claims (12)

1.一种用于显示一个或多个候选视频项的目录供重放的视频显示设备，各视频项在所述目录中通过具有至少一个所显示代表图像的目录条目来表示；所述设备包括：
用户控制装置，可用于通过选择-拖拉操作对所显示目录条目调整大小；以及
响应目录条目的大小调整而选择多个不同代表图像以供相对于那个视频项的显示、使得所显示的数量随着增加的所述目录条目大小而增加、同时各代表图像的显示大小相对所述目录条目大小的变化实质上保持恒定的部件。
2.如权利要求1所述的显示设备，其中，在所述目录条目具有n个代表图像、其中的n为一个或多个的情况下，所述n个代表图像取自相应视频项中的相应预定时间位置。
3.如权利要求2所述的显示设备，其中，当n为两个或两个以上时，所述预定时间位置相对于所述视频项实质上等距。
4.如权利要求1所述的显示设备，其中，所述代表图像包括所述视频项中排列的一组统计重要图像形式。
5.如权利要求1所述的显示设备，其中，当所述目录条目的大小增加从而容纳另一个代表图像时，先前显示的代表图像继续被显示。
6.如权利要求1所述的显示设备，其中，所述用户控件为鼠标指针控件。
7.如权利要求1所述的显示设备，其中，各代表图像提供可用于在对应于那个代表图像的时间位置上开始视频重放的链接。
8.一种用于在具有可用于通过选择-拖拉操作对所显示目录条目调整大小的用户控制装置的配置中显示一个或多个候选视频项的目录供重放的视频显示方法，各视频项在所述目录中通过具有至少一个所显示代表图像的目录条目来表示；所述方法包括以下步骤：
响应目录条目的大小调整而选择多个不同代表图像以供相对于那个视频项的显示，使得所显示的数量随着增加的所述目录条目大小而增加，同时各代表图像的显示大小相对所述目录条目大小的变化实质上保持恒定。
9.计算机软件，具有用于执行如权利要求8所述的方法的程序代码。
10.一种提供媒体，用于提供如权利要求9所述的程序代码。
11.如权利要求10所述的媒体，所述媒体为存储媒体。
12.如权利要求10所述的媒体，所述媒体为传送媒体。
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