公开(公告)号：WO1997030544A2

公开(公告)日：1997-08-21

申请号：PCT/US1997002953

申请日：1997-02-20

Applicant: SAS INSTITUTE, INC.

Inventor： SAS INSTITUTE, INC. ,  TOEBES, John, A., VIII ,  WALKER, Douglas, J.

IPC: H04N00/00

CPC classification number: H04N21/234318 ,  G11B27/024 ,  G11B27/034 ,  G11B27/105 ,  G11B27/28 ,  G11B27/329 ,  G11B27/34 ,  G11B2220/90 ,  H04N5/262 ,  H04N5/783 ,  H04N9/8042 ,  H04N19/176 ,  H04N19/577 ,  H04N21/47205

Abstract: Disclosed is a method and apparatus for frame-transition effects, frame-specific access and reverse play in digitally compressed motion video, such video complying with the MPEG-1 standard. Transitions between two frames of video are effectuated by selecting a FROM frame and a TO frame, generating a stream of bidirectionally dependent duplicator frames which vary in their motion vector references to the FROM frame and the TO frame according to a predefined pattern, placing the FROM frame in the past buffer of a decoder, placing the TO frame in the future frame of a decoder, feeding the stream of duplicator frames to the decoder, causing the duplicator frames to be displayed, and beginning normal playback of the video stream containing the TO frame at the TO frame position. Frame-specific access is accomplished by determining the location of the target frame, determining the type of the target frame, identifying the reference frames to which the target frame directly and indirectly refers, parsing the reference frames with a decoder while the decorder's video display is suppressed, enabling the video display, and beginning normal decoder playback at the target frame location in said video bitstream. Reverse play is accomplished by employing this process for successive target frames where each target frame chosen immediately precedes the previous target frame in display order.

Abstract translation: 本发明公开了一种符合MPEG-1标准的数字压缩运动视频中的帧转换效果，帧特定接入和反向播放的方法和装置。 通过选择一个FROM帧和一个TO帧来实现两帧视频之间的转换，产生一个双向相关复制器帧的流，它们根据预定义的模式将它们的运动矢量引用变化到FROM帧和TO帧，将FROM 在解码器的过去缓冲器中将TO帧放置在解码器的将来的帧中，将复制器帧的流馈送到解码器，导致复制器帧被显示，并开始包含TO的视频流的正常回放 帧在TO帧位置。 通过确定目标帧的位置，确定目标帧的类型，识别目标帧直接和间接参考的参考帧，解码参考帧，解码器的视频显示为 抑制，启用视频显示，并且在所述视频比特流中的目标帧位置开始正常解码器重放。 通过对连续目标帧采用该过程来完成反向播放，其中每个目标帧以显示顺序紧接在先前的目标帧之前。

公开(公告)号：WO1997042601A1

公开(公告)日：1997-11-13

申请号：PCT/US1997007359

申请日：1997-05-02

Applicant: SAS INSTITUTE, INC.

Inventor： SAS INSTITUTE, INC. ,  BAKER, David, F. ,  HALES, William, C. ,  KAISER, Paul, A. ,  PACE, Jason, K. ,  PERRIN, Stephen, R. ,  TOEBES, John, A., VIII ,  WALKER, Douglas, J.

IPC: G06T05/10

CPC classification number: H04N21/234318 ,  G11B27/024 ,  G11B27/034 ,  G11B27/105 ,  G11B27/28 ,  G11B27/329 ,  G11B27/34 ,  G11B2220/90 ,  H04N5/262 ,  H04N5/783 ,  H04N9/8042 ,  H04N19/61 ,  H04N21/47205

Abstract: A navigable multimedia system displaying a navigable motion video (16) based representation of an environment having paths, wherein at least one clip is associated with each path, and allowing for spontaneous navigation of the paths in response to user input. The system provides for seamless transition from a video clip of one path to one of an intersecting path and from one field of view along a path to another field of view on that path. The system provides for hotspots associated with features in the environment and bitmap representations of objects to be placed in receptacles associated with certain portions of the environment wherein said hotspots and receptacles remain associated with environmental features and wherein said objects appear in proper perspective regardless of viewer position. A method for creating a navigable motion video environment comprising the steps of capturing (13) in video clips having optical properties an environment field of view along natural paths through the environment, capturing M-view sprites and other elements and correlating with map clips, adding and editing hotspots, receptacles, and other multimedia production components and binding into final production.

Abstract translation: 一种可导航多媒体系统，其显示具有路径的环境的基于导航运动视频（16）的表示，其中至少一个剪辑与每个路径相关联，并且响应于用户输入允许路径的自发导航。 该系统提供从一条路径的视频剪辑到相交路径中的一条路径以及从该路径上的一条路径到另一个视场的无缝转换。 该系统提供与环境中的特征相关联的热点以及要放置在与环境的某些部分相关联的插座中的物体的位图表示，其中所述热点和容器保持与环境特征相关联，并且其中所述对象以适当的视角出现，而与观察者位置无关 。 一种用于创建可导航运动视频环境的方法，包括以下步骤：在具有光学特性的视频剪辑中捕获（13）沿着通过环境的自然路径的环境视野，捕获M视图精灵和其他元素并与地图片段相关联，添加 并编辑热点，插座和其他多媒体制作组件，并绑定到最终制作中。