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1.发明授权System for the reliable, fast, low-latency communication of object state updates over a computer network by combining lossy and lossless communications 失效通过组合有损和无损通信在计算机网络上进行可靠，快速，低延迟的对象状态更新通信的系统
公开(公告)号：US6006254A
公开(公告)日：1999-12-21
申请号：US920585
申请日：1997-08-29
申请人： Richard C. Waters , David Anderson
发明人： Richard C. Waters , David Anderson
CPC分类号： H04L12/1868 , H04L67/38 , H04L69/164 , H04L69/16
摘要： A system for fast, efficient and reliable communication of object state irmation among a group of processes combines the use of a fast, but lossy and thus unreliable communications channel to the group of processes and a server coupled to the group for providing data which has been lost in the multicasting. In one embodiment, a central server supports reliability and rapid joining while using UDP multicast messaging to achieve rapid interaction and low bandwidth. Differential messages are sent over the lossy channel to compactly describe how to compute the new state of an object from any of several previous states. Such a description can be interpreted even if some number of prior descriptions were not received, greatly reducing the need for explicit, round-trip message repairs while also conserving bandwidth. In one embodiment, the central server communicates with each member of the group over a reliable channel to robustly detect and repair objects affected by lost messages.
摘要翻译： 用于在一组进程之间快速，有效和可靠地传送对象状态信息的系统将使用快速但有损且因此不可靠的通信信道与该组进程组合，以及耦合到该组的服务器提供已经被 丢失在组播中。 在一个实施例中，中央服务器支持可靠性和快速加入，同时使用UDP多播消息传递来实现快速交互和低带宽。 差分消息通过有损通道发送以紧凑地描述如何从几个先前状态中的任一状态计算对象的新状态。 即使没有接收到一些先前的描述，也可以解释这样的描述，大大减少了显式的往返消息修复的需要，同时也节省了带宽。 在一个实施例中，中央服务器通过可靠信道与组中的每个成员进行通信，以鲁棒地检测和修复受丢失消息影响的对象。
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2.发明授权System for sending small positive data notification messages over a network to indicate that a recipient node should obtain a particular version of a particular data item 失效用于通过网络发送小的正数据通知消息以指示接收节点应该获得特定数据项的特定版本的系统
公开(公告)号：US5842216A
公开(公告)日：1998-11-24
申请号：US642345
申请日：1996-05-03
申请人： David Anderson , Richard C. Waters
发明人： David Anderson , Richard C. Waters
IPC分类号： H04L29/02 , G06F12/00 , G06F13/00 , G06F17/30 , H04L1/16 , H04L29/06 , H04L29/08 , G06F15/163
CPC分类号： G06F17/30356 , G06F17/30575 , H04L1/1678 , H04L29/06 , H04L67/34 , H04L69/28 , H04L69/329 , Y10S707/99952 , Y10S707/99954
摘要： A system is provided for eliminating time-consuming, unnecessary transfers f data over networks such as the the World Wide Web while at the same time guaranteeing timeliness of the data used by recipients. Timeliness is assured by immediately sending small data-notification messages whenever data becomes relevant or changes. Efficiency is guaranteed by transmitting the data itself only when requested by the recipient of a data-notification message. In particular, recipients are alerted to the presence of, and changes in, data they might use by data-notification messages containing a timestamp, the data location, and a checksum. Based on the timestamp, the recipient can determine whether the data-notification message contains timely information or should be ignored. Based on the data location and checksum, the recipient can determine whether it already has the current version of the data in question, for example stored in a cache.
摘要翻译： 提供了一种系统，用于通过诸如万维网的网络消除耗时，不必要的数据传输，同时保证接收者使用的数据的及时性。 每当数据变得相关或变化时，立即发送小数据通知消息来保证及时性。 仅当数据通知消息的接收者请求时才通过发送数据本身来保证效率。 特别地，收件人被警告其包含时间戳，数据位置和校验和的数据通知消息可能使用的数据的存在和更改。 基于时间戳，收件人可以确定数据通知消息是否包含及时的信息或应该被忽略。 基于数据位置和校验和，接收者可以确定它是否已经存在所讨论的数据的当前版本，例如存储在高速缓存中。
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公开(公告)号：US20110157595A1
公开(公告)日：2011-06-30
申请号：US12650322
申请日：2009-12-30
CPC分类号： G01B9/02018 , G01B9/02056 , G01B9/02081 , G01B11/26 , G01B2290/15 , G01B2290/45 , G01B2290/70
摘要： An angular displacement of an object is measured interferometrically by splitting a laser beam into a reference beam and a measuring beam. The reference beam is directed at a stationary reference retroreflector and then a phase shift detector. The measuring beam is directed at a rotatable reflective surface of the object and then a stationary measuring retroreflector and then back to the rotatable reflective surface and then to the phase shift detector such that the phase shift detector measures an angular displacement of the rotatable reflective surface when the length of the path of the measuring beam changes when the rotatable reflective surface is displaced.
摘要翻译： 通过将激光束分成参考光束和测量光束来对物体的角位移进行干涉测量。 参考光束指向静止的参考后向反射器，然后是相移检测器。 测量光束指向物体的可旋转反射表面，然后指向静止测量后向反射器，然后返回到可旋转反射表面，然后返回到相移检测器，使得相移检测器测量可旋转反射表面的角位移， 当可旋转的反射表面被移位时，测量光束的路径的长度改变。
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公开(公告)号：US06359619B1
公开(公告)日：2002-03-19
申请号：US09336387
申请日：1999-06-18
IPC分类号： G06F1500
CPC分类号： G06T15/80
摘要： In a method for rendering an evolving three-dimensional scene description as a series of two-dimensional images (frames), the evolving scene description includes object geometries G and their associated shader procedures S. Each shader procedure S is factored into a static procedure Ss and a dynamic procedure Sd such that S(A,I)=Sd(Ss(A,R),I), where A denotes the appearance parameters required to shade objects, I denotes an instance of the control parameters, and R denotes a range of control parameters which include I. Similarly, the rendering procedure TSI (transform, sample, and interpolate) for object geometry is factored into a static procedure TSIs and a dynamic procedure TSId such that TSI(G,I)=TSId(TSIs(G,R),I). The factorization of both S and TSI is chosen to significantly reduce the overall rendering time for the evolving scene. Specifically, viewpoint independent or weakly viewpoint dependent computations Ss(A,R) and TSIs(G,R) are computed in the static phase of rendering and stored either as independent data structures or as a single combined data structure called the internal representation. This internal representation is then processed by the dynamic phase of rendering to produce each frame. Since the required dynamic computations to produce a frame are significantly reduced and the required static computations run infrequently both as a result of a clever factorization and an efficient internal representation, the overall rendering time is reduced.
摘要翻译： 在用于将演进的三维场景描述呈现为一系列二维图像（帧）的方法中，演进场景描述包括对象几何G及其相关联的着色器过程S.每个着色器过程S被分解为静态过程Ss 以及S（A，I）= Sd（Ss（A，R），I））的动态过程Sd，其中A表示遮蔽对象所需的外观参数，I表示控制参数的实例，R表示 控制参数范围包括I.类似地，对象几何的渲染过程TSI（变换，采样和内插）被分解为静态过程TSI和动态过程TSId，使得TSI（G，I）= TSId（TSI G，R），I）。 选择S和TSI的因式分解以显着减少演进场景的整体渲染时间。 具体地说，在独立的数据结构或被称为内部表示的单一的组合数据结构中，在静态的渲染阶段计算出独立视点或弱视点的计算Ss（A，R）和TSI（G，R）。 然后通过渲染的动态阶段处理该内部表示以产生每个帧。 由于产生帧的所需动态计算显着减少，而由于智能因式分解和有效的内部表示，所需的静态计算不经常运行，因此总体渲染时间减少。
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公开(公告)号：US07227592B2
公开(公告)日：2007-06-05
申请号：US10672584
申请日：2003-09-26
CPC分类号： H04N9/31 , H04N5/7408 , H04N9/28 , H04N17/04
摘要： In a rear projection television, cathode ray tubes are mounted inside an enclosure so that each cathode ray tube projects output images onto a rear projection screen using a corresponding electron beam. Calibration images are generated for each cathode ray tube. A camera, also mounted inside the enclosure, acquires an input image of each calibration image. A distortion in each input image is measured, and the output images of the cathode ray tubes are corrected by adjusting the signals controlling the corresponding electron beams according to the distortion.
摘要翻译： 在背投电视中，阴极射线管安装在外壳内，使得每个阴极射线管使用相应的电子束将输出图像投影到背投屏幕上。 为每个阴极射线管生成校准图像。 也安装在机箱内的相机获取每个校准图像的输入图像。 测量每个输入图像中的失真，并且通过根据失真调整控制相应电子束的信号来校正阴极射线管的输出图像。
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公开(公告)号：US5793382A
公开(公告)日：1998-08-11
申请号：US659714
申请日：1996-06-10
CPC分类号： G06T13/00
摘要： A system assures smooth motion in a distributed virtual reality environmenty categorizing the information to be transmitted as to the predictability of future motion and applying appropriate smoothing algorithms based upon knowledge of what the future motion is likely to be. The system switches between a linear interpolation algorithm for less predictable data and a Catmull-Rom spline for more predictable data.
摘要翻译： 系统通过将待发送的信息与未来运动的可预测性进行分类来确保分布式虚拟现实环境中的平滑运动，并且基于对未来运动可能存在的知识应用适当的平滑算法。 该系统在较不可预测的数据的线性插值算法和Catmull-Rom样条之间切换以获得更可预测的数据。
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公开(公告)号：US5475588A
公开(公告)日：1995-12-12
申请号：US79633
申请日：1993-06-18
申请人： Yves Schabes , Richard C. Waters
发明人： Yves Schabes , Richard C. Waters
IPC分类号： G06F17/27
CPC分类号： G06F17/274
摘要： A system is provided for dramatically decreasing the time required to parse a sentence by automatically converting a context-free grammar into a lexicalized form called lexicalized context-free grammar (LCFG) which is used in the parsing process. Lexicalized context-free grammar employs adjoining but, to decrease parsing time, only allows non-wrapping adjoining. The lexicalized context-free grammar is parsed using a parser that decreases parsing time by filtering the grammar based on the words in a sentence and maintaining the valid prefix property while parsing.
摘要翻译： 提供了一个系统，用于通过自动将无上下文语法转换为语法化形式，大大减少解析句子所需的时间，该语法化形式称为语法上下文无关语法（LCFG），用于解析过程。 词汇化的上下文无关语法采用相邻的方式，但是为了减少解析时间，只允许非包装邻接。 使用解析器解析词法化的上下文无关语法，该解析器通过基于句子中的单词过滤语法并在解析时维护有效的前缀属性来减少解析时间。
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公开(公告)号：US06741273B1
公开(公告)日：2004-05-25
申请号：US09368603
申请日：1999-08-04
IPC分类号： H04N947
CPC分类号： H04S7/302
摘要： A system for adjusting delivery of sound to loudspeakers in a home theater includes a plurality of loudspeakers located in an area. The loudspeakers are coupled to a sound generating source. A camera is oriented to acquire images of the area. An image processing system and controller is coupled to the camera and the sound generating source. Image processing system identifies the positions of the speakers and a position of the listener in the area from the images. The controller adjusts the deliver of the sound according to the relative positions of the loudspeakers and the listener.
摘要翻译： 用于调节家庭影院中扬声器的声音传送系统包括位于一个区域中的多个扬声器。 扬声器耦合到发声源。 相机被定向以获取该区域的图像。 图像处理系统和控制器耦合到相机和声音产生源。 图像处理系统从图像中识别扬声器的位置和听众在该区域中的位置。 控制器根据扬声器和收听者的相对位置来调节声音的传送。
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公开(公告)号：US5736990A
公开(公告)日：1998-04-07
申请号：US520099
申请日：1995-08-28
申请人： John W. Barrus , Richard C. Waters
发明人： John W. Barrus , Richard C. Waters
CPC分类号： G06T11/00 , H04L29/06 , A63F2300/8082 , H04L67/38
摘要： A system for virtual environments in which graphical objects are depicted in a space to achieve the required high accuracy regardless of location through establishing locales or subdivisions of the global coordinate system and establishing an origin for each locale, such that the specification of position and movement of a graphical object in the locale can be made with greater precision than using a global coordinate system, thus eliminating the need for high-precision floating point processors or emulation. The system permits designers of virtual environments to work independently on their locales, with overlap being controlled through specifying distance between locale origins as well as relative orientation between the locales. The system also permits ignoring information from non-relevant distant locales to, minimize processing and network bandwidth requirements.
摘要翻译： 一种用于虚拟环境的系统，其中在空间中描绘图形对象，以通过建立全局坐标系的区域设置或细分来为每个区域设置原点，从而实现所需的高精度，无论位置如何，以便定位和移动 可以以比使用全局坐标系更精确的方式进行语言环境中的图形对象，从而消除对高精度浮点处理器或仿真的需要。 该系统允许虚拟环境的设计者在其区域中独立工作，通过指定区域起源之间的距离以及区域之间的相对定向来控制重叠。 该系统还允许忽略来自非相关远程区域的信息，从而最小化处理和网络带宽要求。
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公开(公告)号：US07215324B2
公开(公告)日：2007-05-08
申请号：US10277758
申请日：2002-10-22
申请人： Richard C. Waters
发明人： Richard C. Waters
IPC分类号： G09G5/08
CPC分类号： G06F3/0386
摘要： An automatic indicator system directs a light beam at an object. A camera configured to acquire an image of an object is coupled to a light beam indicator. The image is compared with representations of objects stored in a database. A matching representation is identified and the light beam is directed at the object based on information associated with the matching representation.
摘要翻译： 自动指示器系统将光束引导到物体。 被配置为获取对象的图像的相机被耦合到光束指示器。 将图像与存储在数据库中的对象的表示进行比较。 识别匹配表示，并且基于与匹配表示相关联的信息将光束定向到对象。
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