Technique for drawing directed graphs
    1.
    发明授权
    Technique for drawing directed graphs 失效
    绘制有向图的技术

    公开(公告)号:US4953106A

    公开(公告)日:1990-08-28

    申请号:US355731

    申请日:1989-05-23

    IPC分类号: G06T11/20

    CPC分类号: G06T11/206

    摘要: The present invention relates to a computer-implemented technique for drawing directed graphs providing reduced crossings and improved picture quality. An edge list description provided by a user is processed to produce a ranking of all nodes that minimizes the weighted sum of all edges, an edge cost being the product of its weight and length. Nodes within a ranking are then positioned to reduce edge crossings using a heuristic based on node positions in adjacent ranks. Such heuristic uses a generalized median as a weighting function plus node transposition to avoid senseless edge crossings before proceeding to a next rank. Nodes are then positioned to minimize the weighted sum of horizontal distances among connected nodes. Spline control points are then computed for interconnected nodes, and a code sequence for a drawing is generated.

    摘要翻译: 本发明涉及一种计算机实现的技术,用于绘制提供减少的交叉和改善的画面质量的有向图。 处理由用户提供的边缘列表描述以产生使所有边缘的加权和最小化的所有节点的等级,边缘成本是其权重和长度的乘积。 然后定位排名中的节点,以使用基于相邻队列中的节点位置的启发式来减少边缘交叉。 这种启发式使用广义中值作为加权函数加上节点转置,以避免在进入下一个等级之前无意义的边缘交叉。 然后定位节点以使连接的节点之间的水平距离的加权和最小化。 然后为互连节点计算样条控制点,并生成绘图的代码序列。

    Method and apparatus for windowing in entropy encoding
    2.
    发明授权
    Method and apparatus for windowing in entropy encoding 失效
    用于在熵编码中加窗的方法和装置

    公开(公告)号:US08200680B2

    公开(公告)日:2012-06-12

    申请号:US13069366

    申请日:2011-03-22

    IPC分类号: G06F7/00 G06F17/30

    摘要: The present invention provides efficient window partitioning algorithms for entropy-encoding. The present invention enhances compression performance of entropy encoding based on the approach of modeling a dataset with the frequencies of its n-grams. The present invention may then employ approximation algorithms to compute good partitions in time O(s*log s) and O(s) respectively, for any data segment S with length s.

    摘要翻译: 本发明提供了用于熵编码的有效的窗口分割算法。 本发明基于用其n-gram的频率建模数据集的方法来增强熵编码的压缩性能。 然后,本发明可以使用近似算法来计算具有长度s的任何数据段S的时间O(s * log s)和O(s)的良好分区。

    Method and apparatus for windowing in entropy encoding
    3.
    发明授权
    Method and apparatus for windowing in entropy encoding 失效
    用于在熵编码中加窗的方法和装置

    公开(公告)号:US07296030B2

    公开(公告)日:2007-11-13

    申请号:US10894421

    申请日:2004-07-19

    IPC分类号: G06F7/00 G06F17/00

    摘要: The present invention provides efficient window partitioning algorithms for entropy-encoding. The present invention enhances compression performance of entropy encoding based on the approach of modeling a dataset with the frequencies of its n-grams. The present invention may then employ approximation algorithms to compute good partitions in time O(s*log s) and O(s) respectively, for any data segment S with length s.

    摘要翻译: 本发明提供了用于熵编码的有效的窗口分割算法。 本发明基于用其n-gram的频率建模数据集的方法来增强熵编码的压缩性能。 然后,本发明可以使用近似算法来计算具有长度s的任何数据段S的时间O(s * log s)和O(s)的良好分区。

    Preload library for transparent file transformation
    4.
    发明授权
    Preload library for transparent file transformation 有权
    预加载库进行透明文件转换

    公开(公告)号:US07536418B2

    公开(公告)日:2009-05-19

    申请号:US10754994

    申请日:2004-01-10

    IPC分类号: G06F17/30

    摘要: A preload library partitions certain files into segments and transforms the data of the files on a segment by segment basis, each independently of the other. The transformed segments are then stored as part of a transformed file, with each segment corresponding to a bag containing a chunk (of transformed data) and a gap which permits the chunks to grow when data of the segment is modified during a write operation. The bags are followed by a chunk map which contains metadata defining the compressed version of each segment. The preload library intercepts system calls from applications to the OC specifying access to specific segments of a transformed file. The preload library identifies the chunks corresponding to the specified segments, retrieves and reverses the transform on those chunks and passes the data to the application requesting it. For a system call to write data to certain segments, the data is modified and re-transformed by the library before being written back to disk. A preload library provides improved random access into transformed (e.g. compressed, encrypted, etc.) files.

    摘要翻译: 预加载库将某些文件分割成段,并逐段转换文件的数据,每个文件分别独立于另一个。 变换的段然后被存储为变换文件的一部分,每个段对应于包含块(变换数据)的行李,以及允许块在写入操作期间数据被修改时允许块增长的间隙。 行李后面是一个块图,其中包含定义每个段的压缩版本的元数据。 预加载库拦截从应用程序到OC的系统调用,指定访问转换文件的特定段。 预加载库标识对应于指定段的块,检索并反转这些块上的变换,并将数据传递给请求它的应用程序。 对于将数据写入某些段的系统调用,数据在被写回磁盘之前被库修改和重新转换。 预加载库提供改进的随机访问到变换(例如压缩,加密等)文件。

    Fast prefix matching of bounded strings
    5.
    发明授权
    Fast prefix matching of bounded strings 失效
    有限字符串的快速前缀匹配

    公开(公告)号:US07191168B1

    公开(公告)日:2007-03-13

    申请号:US10254378

    申请日:2002-09-25

    IPC分类号: G06F17/30

    摘要: The present invention increases the efficiency of performing longest prefix matching operations by selecting a radix-encoded trie structure optimized with respect to memory cost. The structure is optimized by determining memory costs for retrie structures indexed on different numbers of high-order characters, and then selecting the structure corresponding to the lowest memory cost. The optimization improves performance in IP look-up operations as well as longest-prefix matching operations performed on general alphabets.

    摘要翻译: 本发明通过选择针对存储器成本优化的基数编码的特里结构来提高执行最长前缀匹配操作的效率。 通过确定在不同数量的高阶字符上索引的检索结构的内存成本,然后选择与最低内存成本相对应的结构来优化结构。 该优化提高了IP查找操作的性能以及对一般字母表执行的最长前缀匹配操作。

    Real time replay service for communications network
    6.
    发明申请
    Real time replay service for communications network 审中-公开
    通信网络的实时重播服务

    公开(公告)号:US20060003751A1

    公开(公告)日:2006-01-05

    申请号:US11213511

    申请日:2005-08-26

    申请人: Kiem-Phong Vo

    发明人: Kiem-Phong Vo

    IPC分类号: H04Q7/20

    摘要: The present invention is a method and system for buffering and replaying a segment of a voice or data transmission. A connection is established between two end nodes in the network. At an intermediate node in the network between the end nodes, a predetermined segment of the data is maintained in a memory as a buffer. Upon receiving a request from one of the end nodes to replay the segment, that segment is replayed and transmitted to the requesting node. The request may be made by a user at one of the end nodes, or may be made automatically after detecting corrupt data. Because the buffering module is in the network, it need not be incorporated in premises or mobile equipment. Because the buffering module is remote from the requesting end node, the replayed data does not contain errors introduced in the original data between the buffering module and the requesting end node.

    摘要翻译: 本发明是用于缓冲和重放语音或数据传输的段的方法和系统。 在网络中的两个端点之间建立连接。 在终端节点之间的网络中的中间节点处,将数据的预定段作为缓冲器保存在存储器中。 在从一个终端节点接收到重播该段的请求时,该段被重放并发送到请求节点。 请求可以由用户在一个终端节点进行,或者可以在检测到损坏的数据之后自动进行。 由于缓冲模块在网络中,因此不需要将其并入到场所或移动设备中。 由于缓冲模块远离请求端节点,重放的数据不包含在缓冲模块和请求端节点之间的原始数据中引入的错误。

    Persistent state checkpoint and restoration systems
    7.
    发明授权
    Persistent state checkpoint and restoration systems 失效
    持久状态检查点和恢复系统

    公开(公告)号:US6105148A

    公开(公告)日:2000-08-15

    申请号:US981298

    申请日:1998-03-03

    IPC分类号: G06F11/14

    CPC分类号: G06F11/1438

    摘要: By checkpointing and restoring a user application process, that includes a volatile state and a persistent state, recovery of an application process from the checkpoint position is possible. Specifically, a volatile state is checkpointed in a checkpoint position. Next, the persistent state is monitored to detect a file operation following a checkpoint position that will modify the persistent state. Then, portions of the persistent state are checkpointed if a modification of the persistent state is about to be performed. Then, a recovery to the checkpoint position can be performed such that modifications to the persistent state since the checkpoint position are undone. This allows for resumption of the user application process from the checkpoint position.

    摘要翻译: PCT No.PCT / US95 / 07629 Sec。 371日期1998年3月3日 102(e)1998年3月3日PCT提交1995年6月16日PCT公布。 公开号WO97 / 00476 日期1997年1月3日通过检查和恢复包含易失性状态和持久状态的用户应用程序进程,可以从检查点位置恢复应用程序进程。 具体来说,检查点位置检查点处于易失状态。 接下来,监视持久状态以检测将修改持续状态的检查点位置之后的文件操作。 然后,如果要执行持久状态的修改,则检查点的持久状态的部分。 然后,可以执行到检查点位置的恢复,使得自检查点位置被撤销之后对持久状态的修改。 这允许从检查点位置恢复用户应用程序进程。

    Data storage technique
    9.
    发明授权
    Data storage technique 有权
    数据存储技术

    公开(公告)号:US08065348B1

    公开(公告)日:2011-11-22

    申请号:US12380268

    申请日:2009-02-25

    IPC分类号: G06F17/30

    摘要: A preload library partitions certain files into segments and transforms the data of the files on a segment by segment basis, each independently of the other. The transformed segments are then stored as part of a transformed file, with each segment corresponding to a bag containing a chunk (of transformed data) and a gap which permits the chunks to grow when data of the segment is modified during a write operation. The bags are followed by a chunk map which contains metadata defining the compressed version of each segment. The preload library intercepts system calls from applications to the OC specifying access to specific segments of a transformed file. The preload library identifies the chunks corresponding to the specified segments, retrieves and reverses the transform on those chunks and passes the data to the application requesting it. For a system call to write data to certain segments, the data is modified and re-transformed by the library before being written back to disk. A preload library provides improved random access into transformed (e.g. compressed, encrypted, etc.) files.

    摘要翻译: 预加载库将某些文件分割成段,并逐段转换文件的数据,每个文件分别独立于另一个。 变换的段然后被存储为变换文件的一部分,每个段对应于包含块(变换数据)的行李,以及允许块在写入操作期间数据被修改时允许块增长的间隙。 行李后面是一个块图,其中包含定义每个段的压缩版本的元数据。 预加载库拦截从应用程序到OC的系统调用,指定访问转换文件的特定段。 预加载库标识对应于指定段的块,检索并反转这些块上的变换,并将数据传递给请求它的应用程序。 对于将数据写入某些段的系统调用,数据在被写回磁盘之前被库修改和重新转换。 预加载库提供改进的随机访问到变换(例如压缩,加密等)文件。

    Compressing massive relational data
    10.
    发明申请
    Compressing massive relational data 有权
    压缩大量关系数据

    公开(公告)号:US20110153623A1

    公开(公告)日:2011-06-23

    申请号:US12655014

    申请日:2009-12-22

    申请人: Kiem-Phong Vo

    发明人: Kiem-Phong Vo

    IPC分类号: G06F17/30

    CPC分类号: G06F17/30595

    摘要: A relational dependency transform is introduced as a way to exploit information redundancy in conditioning data in a relational database for better compressibility. An optimum relational dependency transform of the relational database is first computed. Fields of the relational database are then sorted topologically based on a weighted, directed graph having nodes representing predictor and predictee fields. For each predictee field in the topological order, a transformed field is then computed via the relationship between predictor and predictee in the optimum relational dependency transform.

    摘要翻译: 引入关系依赖变换作为在关系数据库中调节数据中的信息冗余的方法,以获得更好的可压缩性。 首先计算关系数据库的最优关系依赖变换。 关系数据库的领域然后基于具有表示预测变量和预定义字段的节点的加权有向图进行拓扑分类。 对于按照拓扑顺序排列的每个谓词字段,通过最优关系依赖变换中的预测因子和预测符之间的关系计算变换字段。