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    • 62. 发明申请
    • DISTRIBUTED DATA STORAGE USING ERASURE RESILIENT CODING
    • 分布式数据存储使用ERASURE RESILIENT编码
    • US20080313241A1
    • 2008-12-18
    • US11763891
    • 2007-06-15
    • Jin LiLi-wei HeJian Liang
    • Jin LiLi-wei HeJian Liang
    • G06F12/00
    • G06F11/1076G06F2211/1028
    • An erasure resilient coding (ERC) distributed data storage system and method for storing data in a reliable and survivable fashion while minimizing hardware and associated costs. The system and method includes forming multiple protection groups both within and across storage nodes of the storage system. Data is segmented into original data blocks and ERC data blocks. Load balancing occurs by interleaving storage nodes with equal numbers of original data blocks and ERC data blocks while ensuring each node has an equal number of combined read and write operations. Unique read and write operations on data block can be performed independent of other data blocks in a protection group. The write operation uses Galois field arithmetic and ERC transform to either write or append a new data block to a storage node. The read operation recovers data in a variety of ways using ERC decoding.
    • 一种擦除弹性编码(ERC)分布式数据存储系统和方法,用于以可靠和可行的方式存储数据,同时最小化硬件和相关成本。 该系统和方法包括在存储系统的存储节点内部和之间形成多个保护组。 数据被分割成原始数据块和ERC数据块。 通过在具有相等数量的原始数据块和ERC数据块的交织存储节点的同时确保每个节点具有相等数目的组合读和写操作来实现负载平衡。 可以独立于保护组中的其他数据块执行对数据块的独特读写操作。 写操作使用伽罗瓦域算术和ERC变换来向存储节点写入或附加新的数据块。 读取操作使用ERC解码以各种方式恢复数据。
    • 68. 发明授权
    • Method and system for virtual cinematography
    • 虚拟摄影的方法和系统
    • US6040841A
    • 2000-03-21
    • US691996
    • 1996-08-02
    • Michael F. CohenLi-wei HeDavid H. Salesin
    • Michael F. CohenLi-wei HeDavid H. Salesin
    • G06T15/00G06T15/70
    • G06T15/00A63F2300/6661A63F2300/6669A63F2300/6684
    • Communication in a three-dimensional virtual environment generated by a computer is achieved by automatically applying rules of cinematography typically used for motion pictures. The cinematographic rules are codified as a hierarchical finite state machine, which is executed in real-time by a computer in response to input stimulation from a user or other source. The finite state machine controls camera placements automatically for a virtual environment. The finite state machine also exerts subtle influences on the positions and actions of virtual actors, in the same way that a director might stage real actors to compose a better shot. An implementation of a real-time camera controller based on the finite state machine for automatic virtual cinematography, called the virtual cinematographic application module (VC) is presented. The VC is used in virtual reality and other interactive applications to improve upon the fixed point-of-view shots or ceiling mounted cameras that such applications typically employ today. VC also helps improve the next generation of "intelligent-agent" user interfaces, by allowing the users to see themselves with an agent at camera positions that appear natural.
    • 通过计算机生成的三维虚拟环境中的通信是通过自动应用通常用于运动图像的电影摄影规则来实现的。 电影规则被编排为层次有限状态机,其由计算机响应于来自用户或其他来源的输入刺激实时执行。 有限状态机自动控制虚拟环境中的摄像头位置。 有限状态机还对虚拟演员的位置和动作产生微妙的影响,就像导演可能会让真正的演员组合更好的镜头一样。 提出了一种基于有限状态机的实时摄像机控制器,用于自动虚拟摄影,被称为虚拟摄影应用模块(VC)。 VC用于虚拟现实和其他交互式应用程序,以改进这种应用程序今天通常采用的固定视点镜头或天花板安装的摄像机。 VC还可以帮助改善下一代“智能代理”用户界面,让用户可以看到自己与自己的相机位置的代理人。