公开(公告)号：US06948128B2

公开(公告)日：2005-09-20

申请号：US10731545

申请日：2003-12-09

Applicant: Peter Ibrahim ,  Christopher B. Lea ,  Adam D. Barr ,  Raymond Hill

Inventor： Peter Ibrahim ,  Christopher B. Lea ,  Adam D. Barr ,  Raymond Hill

IPC: G11B27/034 ,  G11B27/34 ,  G06F15/16

CPC classification number: G11B27/034 ,  G11B27/34

Abstract: A nonlinear editing system for audio, video and/or other source materials comprises a system to define at least one time line representing the edit, the time line being represented in the editing system as an operator graph. The operator graph includes operators, representing sources and time-based effects, and time varying connections therebetween. For each period of the defined time line wherein the connections do not change, a expression tree comprising a simplified representation of the operators and the connections required to render that portion of the time line is extracted. Each expression tree can be examined to ensure that all of the required sources and/or connections are available to render that portion of the time line in real time and, if this is not the case, a determination can be made of which portions of the expression tree can be pre-rendered to an intermediate result, the intermediate result being substituted into expression tree to provide real time rendering.

Abstract translation: 用于音频，视频和/或其他源材料的非线性编辑系统包括一个系统，用于定义表示编辑的至少一个时间线，该时间线在编辑系统中被表示为操作符图。 运算符图包括代表源和时间效应的运算符以及它们之间的时变连接。 对于其中连接不改变的所定义的时间线的每个周期，提取包括操作者的简化表示和呈现该时间线部分所需的连接的表达式树。 可以检查每个表达式树，以确保所有必需的源和/或连接可用于实时渲染时间线的部分，如果不是这样，则可以确定 表达式树可以预渲染为中间结果，将中间结果替换为表达式树以提供实时渲染。

公开(公告)号：US06664966B1

公开(公告)日：2003-12-16

申请号：US09662090

申请日：2000-09-14

Applicant: Peter Ibrahim ,  Christopher B. Lea ,  Adam D. Barr ,  Raymond Hill

Inventor： Peter Ibrahim ,  Christopher B. Lea ,  Adam D. Barr ,  Raymond Hill

IPC: G06T1570

CPC classification number: G11B27/34 ,  G11B27/034 ,  G11B2220/415

Abstract: A nonlinear editing system for audio, video and/or other source materials comprises a system to define at least one time line representing the edit, the time line being represented in the editing system as an operator graph. The operator graph includes operators, representing sources and time-based effects, and time varying connections therebetween. For each period of the defined time line wherein the connections do not change, a expression tree comprising a simplified representation of the operators and the connections required to render that portion of the time line is extracted. Each expression tree can be examined to ensure that all of the required sources and/or connections are available to render that portion of the time line in real time and, if this is not the case, a determination can be made of which portions of the expression tree can be pre-rendered to an intermediate result, the intermediate result being substituted into expression tree to provide real time rendering.

Abstract translation: 用于音频，视频和/或其他源材料的非线性编辑系统包括一个系统，用于定义表示编辑的至少一个时间线，该时间线在编辑系统中被表示为操作符图。 运算符图包括代表源和时间效应的运算符以及它们之间的时变连接。 对于其中连接不改变的所定义的时间线的每个周期，提取包括操作者的简化表示和呈现该时间线部分所需的连接的表达式树。 可以检查每个表达式树，以确保所有必需的源和/或连接可用于实时渲染时间线的部分，如果不是这样，则可以确定 表达式树可以预渲染为中间结果，将中间结果替换为表达式树以提供实时渲染。

公开(公告)号：US6160548A

公开(公告)日：2000-12-12

申请号：US842552

申请日：1997-04-15

Applicant: Christopher B. Lea ,  Raymond Hill ,  Adam D. Barr

Inventor： Christopher B. Lea ,  Raymond Hill ,  Adam D. Barr

IPC: G11B27/00 ,  G11B27/034 ,  G11B27/10 ,  G11B27/34 ,  H04N5/04 ,  H04N5/073 ,  G06F3/00 ,  G06F13/00 ,  H04N9/475

CPC classification number: H04N5/073 ,  G11B27/002 ,  G11B27/034 ,  G11B27/10 ,  G11B27/34 ,  H04N5/04

Abstract: A method and system for synchronizing modules associated with audiovisual devices, generally for use with a digital non-linear editor. A logical clock communicates information, including time and state (clock operating mode) information, to hardware and software modules through a synchronization port. The synchronization ports convert the time information into values recognizable by the module, and offset the time as needed to maintain synchronization. The state information may effect module commands for controlling audiovisual devices, such as rewind, playback and capture commands to tape players, timed such that various devices having different preparatory timing requirements are synchronized. State information, such as information indicating that a device is ready, may be returned by the modules. Video editing features such as scrubbing, looping and frame-stepping are supported by the mode information that is communicated between the clock and the synchronization ports.

Abstract translation: 一种用于与视听设备相关联的模块同步的方法和系统，通常与数字非线性编辑器一起使用。 逻辑时钟通过同步端口将信息（包括时间和状态（时钟操作模式）信息）传送到硬件和软件模块。 同步端口将时间信息转换为模块可识别的值，并根据需要偏移时间以保持同步。 状态信息可以影响用于控制音频设备的模块命令，诸如倒带，回放和捕获命令到磁带播放器，定时使得具有不同准备时间要求的各种设备被同步。 模块可以返回诸如指示设备准备好的信息的状态信息。 通过在时钟和同步端口之间传递的模式信息支持视频编辑功能，如擦除，循环和帧步进。