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    Leaf sequencing method and system
    1.
    发明申请
    Leaf sequencing method and system 失效
    叶片测序方法和系统

    公开(公告)号：US20050148841A1

    公开(公告)日：2005-07-07

    申请号：US10736023

    申请日：2003-12-15

    申请人： Srijit Kamath ,  Sartaj Sahni ,  Jatinder Palta ,  Sanjay Ranka ,  Jonathan Li

    发明人： Srijit Kamath ,  Sartaj Sahni ,  Jatinder Palta ,  Sanjay Ranka ,  Jonathan Li

    IPC分类号： A61B5/05 ,  A61N5/10

    CPC分类号： A61N5/103 ,  A61N5/1036 ,  A61N5/1042

    摘要： A method of delivering radiation treatment using multi-leaf collimation includes the step of providing a radiation fluence map which includes an intensity profile. The fluence map is converted into a preliminary leaf sequence, wherein the preliminary leaf sequence minimizes machine on-time and is generated without leaf movement constraints. The leaf movement constraint is imposed on the preliminary leaf sequence. At least one constraint elimination algorithm is then applied, the algorithm adjusting the preliminary leaf sequence to minimize violations of the constraint while providing the desired fluence map and minimized radiation on-time. The method can be applied to SMLC and DLMC systems, and can include adjustment for the tongue-and-groove effect.

    摘要翻译： 使用多叶准直进行放射治疗的方法包括提供包括强度分布的辐射注量图的步骤。 注量图被转换成初步的叶子序列，其中初步叶子序列使机器准时最小化，并且不产生叶片运动限制。 叶片运动约束对初步叶序列施加。 然后应用至少一个约束消除算法，该算法调整初步叶序列以最小化对约束的违反，同时提供期望的通量图和最小化的辐射on-time。 该方法可以应用于SMLC和DLMC系统，并且可以包括对榫槽效应的调整。

    Field splitting for intensity modulated fields of large size
    2.
    发明申请
    Field splitting for intensity modulated fields of large size 失效
    大尺寸强度调制场的场分割

    公开(公告)号：US20050254623A1

    公开(公告)日：2005-11-17

    申请号：US11102083

    申请日：2005-04-08

    申请人： Srijit Kamath ,  Sartaj Sahni ,  Jonathan Li ,  Jatinder Palta ,  Sanjay Ranka

    发明人： Srijit Kamath ,  Sartaj Sahni ,  Jonathan Li ,  Jatinder Palta ,  Sanjay Ranka

    IPC分类号： A61N5/10

    CPC分类号： A61N5/1042 ,  A61N5/1036

    摘要： A method of delivering intensity modulated radiation therapy (IMRT) is disclosed. An intensity profile for the treatment of a patient is provided which spans a prescribed field width and includes a discrete profile having intensity values at each of a plurality of sample points bounded by the prescribed width. The prescribed width is compared to a maximum field width provided by the radiation treatment system. The intensity profile is split into a plurality of intensity profile portions, each having respective widths less than the maximum width if the prescribed width is greater than the maximum width. The prescribed field is also divided into a plurality of different profile portion split arrangements. A monitor unit (MU) efficiency is calculated for each of the arrangements. One of the arrangements is selected for delivery by the system using a leaf sequencing method.

    摘要翻译： 公开了一种递送强度调制放射治疗（IMRT）的方法。 提供了用于治疗患者的强度分布，其跨越规定的场宽度并且包括在由规定宽度限定的多个采样点中的每一个处具有强度值的离散轮廓。 将规定的宽度与辐射处理系统提供的最大场宽进行比较。 如果规定的宽度大于最大宽度，则强度分布被分成多个强度分布部分，每个强度分布部分各自具有小于最大宽度的宽度。 规定的场也被分成多个不同的轮廓部分割装置。 针对每个布置计算监视器单元（MU）的效率。 选择其中一种安排用于通过系统使用叶片测序方法递送。

    Field splitting for intensity modulated fields of large size
    3.
    发明授权
    Field splitting for intensity modulated fields of large size 失效
    大尺寸强度调制场的场分割

    公开(公告)号：US07142635B2

    公开(公告)日：2006-11-28

    申请号：US11102083

    申请日：2005-04-08

    申请人： Srijit Kamath ,  Sartaj Sahni ,  Jonathan Gang Li ,  Jatinder Palta ,  Sanjay Ranka

    发明人： Srijit Kamath ,  Sartaj Sahni ,  Jonathan Gang Li ,  Jatinder Palta ,  Sanjay Ranka

    IPC分类号： A61N5/10

    CPC分类号： A61N5/1042 ,  A61N5/1036

    摘要： A method of delivering intensity modulated radiation therapy (IMRT) is disclosed. An intensity profile for the treatment of a patient is provided which spans a prescribed field width and includes a discrete profile having intensity values at each of a plurality of sample points bounded by the prescribed width. The prescribed width is compared to a maximum field width provided by the radiation treatment system. The intensity profile is split into a plurality of intensity profile portions, each having respective widths less than the maximum width if the prescribed width is greater than the maximum width. The prescribed field is also divided into a plurality of different profile portion split arrangements. A monitor unit (MU) efficiency is calculated for each of the arrangements. One of the arrangements is selected for delivery by the system using a leaf sequencing method.

    摘要翻译： 公开了一种递送强度调制放射治疗（IMRT）的方法。 提供了用于治疗患者的强度分布，其跨越规定的场宽度并且包括在由规定宽度限定的多个采样点中的每一个处具有强度值的离散轮廓。 将规定的宽度与辐射处理系统提供的最大场宽进行比较。 如果规定的宽度大于最大宽度，则强度分布被分成多个强度分布部分，每个强度分布部分各自具有小于最大宽度的宽度。 规定的场也被分成多个不同的轮廓部分割装置。 针对每个布置计算监视器单元（MU）的效率。 选择其中一种安排用于通过系统使用叶片测序方法递送。

    Leaf sequencing method and system
    4.
    发明授权
    Leaf sequencing method and system 失效
    叶片测序方法和系统

    公开(公告)号：US07085348B2

    公开(公告)日：2006-08-01

    申请号：US10736023

    申请日：2003-12-15

    申请人： Srijit Kamath ,  Sartaj Sahni ,  Jantinder Palta ,  Sanjay Ranka ,  Jonathan G. Li

    发明人： Srijit Kamath ,  Sartaj Sahni ,  Jantinder Palta ,  Sanjay Ranka ,  Jonathan G. Li

    IPC分类号： A61N5/10

    CPC分类号： A61N5/103 ,  A61N5/1036 ,  A61N5/1042

    摘要： A method of delivering radiation treatment using multi-leaf collimation includes the step of providing a radiation fluence map which includes an intensity profile. The fluence map is converted into a preliminary leaf sequence, wherein the preliminary leaf sequence minimizes machine on-time and is generated without leaf movement constraints. The leaf movement constraint is imposed on the preliminary leaf sequence. At least one constraint elimination algorithm is then applied, the algorithm adjusting the preliminary leaf sequence to minimize violations of the constraint while providing the desired fluence map and minimized radiation on-time. The method can be applied to SMLC and DLMC systems, and can include adjustment for the tongue-and-groove effect.

    摘要翻译： 使用多叶准直进行放射治疗的方法包括提供包括强度分布的辐射注量图的步骤。 注量图被转换成初步的叶子序列，其中初步叶子序列使机器准时最小化，并且不产生叶片运动限制。 叶片运动约束对初步叶序列施加。 然后应用至少一个约束消除算法，该算法调整初步叶序列以最小化对约束的违反，同时提供期望的通量图和最小化的辐射on-time。 该方法可以应用于SMLC和DLMC系统，并且可以包括对榫槽效应的调整。

    Low power ternary content-addressable memory (TCAMs) for very large forwarding tables
    7.
    发明授权
    Low power ternary content-addressable memory (TCAMs) for very large forwarding tables 失效
    用于非常大的转发表的低功率三元内容可寻址存储器（TCAM）

    公开(公告)号：US08089961B2

    公开(公告)日：2012-01-03

    申请号：US11952289

    申请日：2007-12-07

    申请人： Sartaj Sahni ,  Wencheng Lu

    发明人： Sartaj Sahni ,  Wencheng Lu

    IPC分类号： H04L12/56

    CPC分类号： H04L45/00 ,  H04L45/7453

    摘要： Ternary content-addressable memories (TCAMs) may be used to obtain a simple and very fast implementation of a router's forwarding engine. The applicability of TCAMs is, however, limited by their size and high power requirement. The present invention provides an improved method and associated algorithms to reduce the power needed to search a forwarding table using a TCAM. Additionally, the present invention teaches how to couple TCAMs and high bandwidth SRAMs so as to overcome both the power and size limitations of a pure TCAM forwarding engine. By using one of the novel TCAM-SRAM coupling schemes (M-12Wb), TCAM memory is reduced by a factor of about 5 on IPv4 data sets and by a factor of about 2.5 on IPv6 data sets; TCAM power requirement is reduced by a factor of about 10 on IPv4 data sets and by a factor of about 6 on IPv6 data sets.

    摘要翻译： 可以使用三元内容寻址存储器（TCAM）来获得路由器转发引擎的简单且非常快速的实现。 然而，TCAM的适用性受到其尺寸和高功率要求的限制。 本发明提供了一种改进的方法和相关联的算法，以减少使用TCAM搜索转发表所需的功率。 另外，本发明教导了如何耦合TCAM和高带宽SRAM，以便克服纯TCAM转发引擎的功率和大小限制。 通过使用新型TCAM-SRAM耦合方案（M-12Wb）之一，对于IPv4数据集，TCAM存储器在IPv4数据集上减少约5倍，对IPv6数据集减少约2.5; 对于IPv4数据集，TCAM功率要求降低约10倍，IPv6数据集减少约6倍。

    System and methods for packet filtering
    8.
    发明申请
    System and methods for packet filtering 失效
    用于包过滤的系统和方法

    公开(公告)号：US20050163122A1

    公开(公告)日：2005-07-28

    申请号：US11027164

    申请日：2004-12-30

    申请人： Sartaj Sahni ,  Haibin Lu

    发明人： Sartaj Sahni ,  Haibin Lu

    IPC分类号： H04L12/56 ,  H04L12/28

    CPC分类号： H04L45/06 ,  H04L45/50

    摘要： A system for classifying data packets transmitted over a data communications network based upon a set of predetermined prefixes associated with destination addresses of the data packets is provided. The includes a data structure stored in an electronic memory. The data structure is a prefix-in-B-tree (PIBT) data structure and/or a range-in-B-tree (RIBT) data structure, the at least one data structure comprising a plurality of nodes based upon the set of predetermined prefixes. The system also includes a determination module for determining a match between one or more of the plurality of nodes and a destination address of a particular data packet.

    摘要翻译： 提供了一种用于基于与数据分组的目的地地址相关联的一组预定前缀在数据通信网络上传送的数据分组进行分类的系统。 包括存储在电子存储器中的数据结构。 数据结构是B-B树（PIBT）数据结构和/或B-tree（RIBT）数据结构中的至少一个数据结构，所述至少一个数据结构包括多个节点 预定的前缀。 该系统还包括用于确定多个节点中的一个或多个节点与特定数据分组的目的地地址之间的匹配的确定模块。

    Succinct representation of static packet classifiers
    9.
    发明授权
    Succinct representation of static packet classifiers 失效
    静态分组分类器的表示

    公开(公告)号：US07948980B2

    公开(公告)日：2011-05-24

    申请号：US12375623

    申请日：2007-08-02

    申请人： Wencheng Lu ,  Sartaj Sahni

    发明人： Wencheng Lu ,  Sartaj Sahni

    IPC分类号： H04L12/56

    CPC分类号： H04L45/48 ,  H04L45/14 ,  H04L45/54 ,  H04L45/742

    摘要： A computer-implemented method of classifying packets of data transmitted over a data communications network includes providing a memory-storable packet classifier rule defined by a plurality of filters, each filter uniquely corresponding to a one of a plurality of actions to be taken in transmitting the data packets over the data communications network; and classifying a data packet according to the packet classifier rule by generating at least one supernode trie subject to a predetermined constraint for reducing accesses to a memory in which the packet classifier rule is stored. A system including a combination of hardware and software modules is provided for carrying out the method. A computer-readable storage medium is also provided for storing a computer program for carrying out the method.

    摘要翻译： 对通过数据通信网络发送的数据分组进行分类的计算机实现方法包括：提供由多个滤波器定义的可存储存储的分组分类器规则，每个滤波器唯一地对应于在发送多个滤波器中要采取的多个动作中的一个 通过数据通信网络的数据包; 以及根据分组分类规则对数据分组进行分类，通过生成经受预定约束的至少一个超级特技，以减少对存储分组分类器规则的存储器的访问。 提供了包括硬件和软件模块的组合的系统，用于执行该方法。 还提供了一种用于存储用于执行该方法的计算机程序的计算机可读存储介质。

    SUCCINCT REPRESENTATION OF STATIC PACKET CLASSIFIERS
    10.
    发明申请
    SUCCINCT REPRESENTATION OF STATIC PACKET CLASSIFIERS 失效
    静态分组分类器的代表性表示

    公开(公告)号：US20100034202A1

    公开(公告)日：2010-02-11

    申请号：US12375623

    申请日：2007-08-02

    申请人： Wencheng Lu ,  Sartaj Sahni

    发明人： Wencheng Lu ,  Sartaj Sahni

    IPC分类号： H04L12/56

    CPC分类号： H04L45/48 ,  H04L45/14 ,  H04L45/54 ,  H04L45/742

    摘要： A computer-implemented method of classifying packets of data transmitted over a data communications network includes providing a memory-storable packet classifier rule defined by a plurality of filters, each filter uniquely corresponding to a one of a plurality of actions to be taken in transmitting the data packets over the data communications network; and classifying a data packet according to the packet classifier rule by generating at least one supemode trie subject to a predetermined constraint for reducing accesses to a memory in which the packet classifier rule is stored. A system including a combination of hardware and software modules is provided for carrying out the method. A computer-readable storage medium is also provided for storing a computer program for carrying out the method.

    摘要翻译： 对通过数据通信网络发送的数据分组进行分类的计算机实现方法包括：提供由多个滤波器定义的可存储存储的分组分类器规则，每个滤波器唯一地对应于在发送多个滤波器中要采取的多个动作中的一个 通过数据通信网络的数据包; 并根据分组分类规则对数据分组进行分类，生成至少一个经过预定约束的超模式特技，以减少对存储分组分类器规则的存储器的访问。 提供了包括硬件和软件模块的组合的系统，用于执行该方法。 还提供了一种用于存储用于执行该方法的计算机程序的计算机可读存储介质。