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1. 发明授权

US06430191B1 Multi-stage queuing discipline 失效
标题翻译：多级排队纪律
公开(公告)号：US06430191B1
公开(公告)日：2002-08-06
申请号：US08885400
申请日：1997-06-30
申请人： Daniel E. Klausmeier , Kevin Wong , Quang Nguyen , Cherng-Ren Sue , David A. Hughes , Ross Suydam Heitkamp , Rafael Gomez
发明人： Daniel E. Klausmeier , Kevin Wong , Quang Nguyen , Cherng-Ren Sue , David A. Hughes , Ross Suydam Heitkamp , Rafael Gomez
IPC分类号： H04L1256
CPC分类号： H04L47/10 , H04L12/5601 , H04L47/29 , H04L47/33 , H04L49/3081 , H04L2012/5636 , H04L2012/5648 , H04L2012/5651 , H04L2012/5679 , H04L2012/5681 , H04L2012/5682
摘要： In a digital switch, incoming cells are placed into a queue in a cell memory. The switch maintains various cell queues, including VC queues that correspond to individual connections and QBin queues that correspond to various classes of service. Cells may arrive to a VC queue or a QBin queue but will depart from a QBin queue. Accordingly, cells may be moved from VC queues to QBin queues. Cells are serviced according to the use of QBin Groups. A QBin Group (QBG) includes a number of logical queues (QBins) of cells to be transported in the digital network. After a QBG is selected, one of its logical queues is selected for servicing. The QBG may be selected by examining all of the QBGs to find an eligible QBG which is most overdue for service. A QBin of the selected QBG may then be selected by examining each of the QBins comprising the selected QBG to find the most overdue for service. The QBGs may correspond to virtual interfaces.
摘要翻译：在数字交换机中，传入的信元被放入单元存储器中的队列中。交换机维护各种小区队列，包括对应于各种连接的VC队列和对应于各种服务类别的QBin队列。单元格可能会到达一个VC队列或一个QBin队列，但会离开QBin队列。因此，小区可以从VC队列移动到QBin队列。根据QBin组的使用对单元进行维修。 QBG组（QBG）包括在数字网络中要传输的单元的多个逻辑队列（QBins）。选择QBG后，选择其逻辑队列之一进行维修。 QBG可以通过检查所有QBG来选择，以找到最适合服务的合格QBG。然后可以通过检查包括所选择的QBG的每个QB，来查找所选择的QBG的QBin，以找到服务最迟。 QBG可以对应于虚拟接口。

2. 发明授权

US5835494A Multi-level rate scheduler 失效
标题翻译：多级速率调度程序
公开(公告)号：US5835494A
公开(公告)日：1998-11-10
申请号：US825409
申请日：1997-03-27
申请人： David A. Hughes , Daniel E. Klausmeier
发明人： David A. Hughes , Daniel E. Klausmeier
IPC分类号： H04L12/56 , H04Q11/04
CPC分类号： H04L12/5602 , H04L12/5693 , H04L47/2441 , H04L47/568 , H04Q11/0478 , H04L2012/5649 , H04L2012/5679 , H04L2012/5681
摘要： A method and apparatus are provided for scheduling when each of a plurality of virtual connections supported by a transmit device will be serviced by the transmit device. The transmit device includes a transmission control unit that uses a plurality of calendars to schedule when each of the plurality of virtual connections will be serviced. Virtual connections with faster transfer rates are scheduled using higher granularity calendars, while virtual connections with slower transfer rates are scheduled using lower granularity calendars. Each entry in the calendars is associated with a time interval ("cell slot") during which the transmit device is able to service one virtual connection. During a given cell slot, linked lists associated with the calendar entries that correspond to the cell slot are added to a service queue, and the virtual connection at the head of the service queue is serviced. After a virtual connection is serviced, the next service time for the virtual connection is scheduled by attaching the virtual connection to the head of a linked list associated with the appropriate entry of the appropriate calendar. The appropriate entry is determined by incrementing a fixed-point "desired service time" value that represents the cell slot for which the virtual connection was last scheduled, by a fixed-point inter-gap value that represents the how many cell slots ideally elapse between sequential service times of the virtual connection.
摘要翻译：提供了一种方法和装置，用于当传输设备支持的多个虚拟连接中的每一个将由发送设备服务时进行调度。发送设备包括传输控制单元，其使用多个日历来调度何时将维护多个虚拟连接中的每一个。使用更高粒度的日历调度具有更快传输速率的虚拟连接，而使用较低粒度的日历安排使用较慢传输速率的虚拟连接。日历中的每个条目与发送设备能够服务于一个虚拟连接的时间间隔（“小区时隙”）相关联。在给定的小区时隙期间，与对应于小区时隙的日历条目相关联的链接列表被添加到服务队列中，并且服务队列头部处的虚拟连接被服务。在虚拟连接被服务之后，通过将虚拟连接附加到与适当日历的适当条目相关联的链接列表的头部来安排虚拟连接的下一服务时间。通过将表示虚拟连接最后调度的小区时隙的定点“期望服务时间”值增加一个定点间隙值来确定适当的条目，该定点间隙值表示理想地经过多少小区时隙虚拟连接的连续服务时间。

3. 发明授权

US06483854B1 Method and apparatus for using ATM queues for segmentation and reassembly of data frames 有权
标题翻译：用于使用ATM队列进行数据帧的分割和重组的方法和装置
公开(公告)号：US06483854B1
公开(公告)日：2002-11-19
申请号：US09774335
申请日：2001-01-30
申请人： Daniel E. Klausmeier , Kevin Wong , David A. Hughes
发明人： Daniel E. Klausmeier , Kevin Wong , David A. Hughes
IPC分类号： H04J324
CPC分类号： H04L49/9094 , H04L49/108 , H04L49/90 , H04L49/9021 , H04L2012/5647 , H04L2012/5658 , H04L2012/5665
摘要： A plurality of cells are received from a digital network and stored in a logical queue. The cells contain data information and logical connection information and the logical queue corresponds to the logical connection identified by the logical connection information. The cells are combined into a frame by extracting the cells from the logical queue and storing the cells to a local memory so that the data information is preserved. Extraction may be accomplished by notifying a local processor that the frame's worth of data is ready and then transferring the data information of the cells to a local memory at the direction of the local processor. During the transfer, error detection operations may be performed. Information may be transmitted into the digital network by segmenting a frame of data into a plurality of cells and injecting each of the cells into a logical queue. The logical queue may be constructed with a series of linked list pointers associated with the memory locations. The cells may then be transmitted into the digital network in an order consistent with the linked list pointers.
摘要翻译：多个小区从数字网络接收并存储在逻辑队列中。小区包含数据信息和逻辑连接信息，逻辑队列对应于由逻辑连接信息标识的逻辑连接。通过从逻辑队列提取单元格并将单元格存储到本地存储器中，将单元格组合成一帧，从而保留数据信息。提取可以通过通知本地处理器该帧的数据准备就绪，然后在本地处理器的方向上将单元的数据信息传送到本地存储器来完成。在传送期间，可以执行错误检测操作。信息可以通过将数据帧分割成多个小区并将每个小区注入到逻辑队列中来发送到数字网络。可以使用与存储器位置相关联的一系列链接列表指针来构造逻辑队列。然后可以以与链表指针一致的顺序将单元发送到数字网络。

4. 发明授权

US06535484B1 Method and apparatus for per traffic flow buffer management 有权
标题翻译：每个流量缓冲器管理的方法和装置
公开(公告)号：US06535484B1
公开(公告)日：2003-03-18
申请号：US09490548
申请日：2000-01-24
申请人： David A. Hughes , Daniel E. Klausmeier
发明人： David A. Hughes , Daniel E. Klausmeier
IPC分类号： H04L1256
CPC分类号： H04Q11/0478 , H04L12/5601 , H04L47/10 , H04L47/20 , H04L47/2441 , H04L47/30 , H04L47/32 , H04L49/108 , H04L2012/5651 , H04L2012/5682
摘要： A method of managing oversubscription of a common buffer resource shared by a number of traffic flows in a cell switching network in response to the utilization of the common buffer resource. A buffer utilization threshold is established for each of the traffic flows. As new cells arrive, the global usage of the buffer resource is monitored. As the buffer utilization increases, the thresholds for each of the traffic flows are dynamically adjusted based upon the global usage of the buffer. Aggressive buffer allocations are scaled back when necessary, thereby leaving space for traffic flows which are relatively empty. In one embodiment, the thresholds are coded in mantissa and exponent form so that the scaling is accomplished by adjusting the exponent value.
摘要翻译：响应于公共缓冲器资源的利用，管理由小区交换网络中的多个业务流共享的公共缓冲资源的超额预订的方法。为每个业务流建立缓冲区利用率阈值。当新的单元到达时，监视缓冲资源的全局使用情况。随着缓冲区利用率的增加，每个业务流的阈值都会根据缓冲区的全局使用情况进行动态调整。必要时可以缩放积极的缓冲区分配，从而为相对空的流量流留出空间。在一个实施例中，阈值以尾数和指数形式编码，使得通过调整指数值来实现缩放。

5. 发明授权

US06201813B1 Method and apparatus for using ATM queues for segmentation and reassembly of data frames 失效
标题翻译：用于使用ATM队列进行数据帧的分割和重组的方法和装置
公开(公告)号：US06201813B1
公开(公告)日：2001-03-13
申请号：US08884705
申请日：1997-06-30
申请人： Daniel E. Klausmeier , Kevin Wong , David A. Hughes
发明人： Daniel E. Klausmeier , Kevin Wong , David A. Hughes
IPC分类号： H04L1228
CPC分类号： H04L49/9094 , H04L49/108 , H04L49/90 , H04L49/9021 , H04L2012/5647 , H04L2012/5658 , H04L2012/5665
摘要： A plurality of cells are received from a digital network and stored in a logical queue. The cells contain data information and logical connection information and the logical queue corresponds to the logical connection identified by the logical connection information. The cells are combined into a frame by extracting the cells from the logical queue and storing the cells to a local memory so that the data information is preserved. Extraction may be accomplished by notifying a local processor that the frame's worth of data is ready and then transferring the data information of the cells to a local memory at the direction of the local processor. During the transfer, error detection operations may be performed. Information may be transmitted into the digital network by segmenting a frame of data into a plurality of cells and injecting each of the cells into a logical queue. The logical queue may be constructed with a series of linked list pointers associated with the memory locations. The cells may then be transmitted into the digital network in an order consistent with the linked list pointers.
摘要翻译：多个小区从数字网络接收并存储在逻辑队列中。小区包含数据信息和逻辑连接信息，逻辑队列对应于由逻辑连接信息标识的逻辑连接。通过从逻辑队列提取单元格并将单元格存储到本地存储器中，将单元格组合成一帧，从而保留数据信息。提取可以通过通知本地处理器该帧的数据准备就绪，然后在本地处理器的方向上将单元的数据信息传送到本地存储器来完成。在传送期间，可以执行错误检测操作。信息可以通过将数据帧分割成多个小区并将每个小区注入到逻辑队列中来发送到数字网络。可以使用与存储器位置相关联的一系列链接列表指针来构造逻辑队列。然后可以以与链表指针一致的顺序将单元发送到数字网络。

6. 发明授权

US06034945A Method and apparatus for per traffic flow buffer management 失效
公开(公告)号：US06034945A
公开(公告)日：2000-03-07
申请号：US648556
申请日：1996-05-15
申请人： David A. Hughes , Daniel E. Klausmeier
发明人： David A. Hughes , Daniel E. Klausmeier
IPC分类号： H04L12/56 , H04Q11/04
CPC分类号： H04Q11/0478 , H04L12/5601 , H04L47/10 , H04L47/20 , H04L47/2441 , H04L47/30 , H04L47/32 , H04L49/108 , H04L2012/5651 , H04L2012/5682
摘要： A method of managing oversubscription of a common buffer resource shared by a number of traffic flows in a cell switching network in response to the utilization of the common buffer resource. A buffer utilization threshold is established for each of the traffic flows. As new cells arrive, the global usage of the buffer resource is monitored. As the buffer utilization increases, the thresholds for each of the traffic flows are dynamically adjusted based upon the global usage of the buffer. Aggressive buffer allocations are scaled back when necessary, thereby leaving space for traffic flows which are relatively empty. In one embodiment, the thresholds are coded in mantissa and exponent form so that the scaling is accomplished by adjusting the exponent value.

7. 外观设计

USD606379S1 Bar clamp extension fixture 有权
标题翻译：棒夹延长夹具
公开(公告)号：USD606379S1
公开(公告)日：2009-12-22
申请号：US29289776
申请日：2007-07-30
申请人： David A. Hughes
设计人： David A. Hughes

8. 发明授权

US07072350B2 Polling response selection using request monitoring in a network switch apparatus 失效
公开(公告)号：US07072350B2
公开(公告)日：2006-07-04
申请号：US10245932
申请日：2002-09-17
申请人： David Dooley , David A. Hughes
发明人： David Dooley , David A. Hughes
IPC分类号： H04L12/28
CPC分类号： H04L49/3081 , H04L49/106 , H04L49/108 , H04L2012/5679 , H04Q11/0478
摘要： A switch node includes arbiter logic configured to gather global information regarding switching requests within the switch node and to control switching of one or more packets through the switch node. The arbiter logic may include a bus snooping interface configured to detect the switching requests within the switch node. The bus snooping interface includes a plurality of switching request destination registers configured to store switching request destination information from the detected switching requests. In addition, the arbiter logic includes a packet switching request array configured to transmit a next switching request within the switch node according to prior switching request destination information stored in the switching request destination registers. The switching of the one or more packets may be through a cross-point switch matrix in the switch node.

9. 发明授权

US07110363B1 Virtual-channel merging 有权
标题翻译：虚拟渠道合并
公开(公告)号：US07110363B1
公开(公告)日：2006-09-19
申请号：US10353125
申请日：2003-01-28
申请人： Jeremy Lawrence , Bruce S. Davie , David A. Hughes
发明人： Jeremy Lawrence , Bruce S. Davie , David A. Hughes
IPC分类号： H04J1/00 , H04L12/28 , H04L12/66
CPC分类号： H04L12/5601 , H04L49/104 , H04L2012/5624 , H04L2012/5626 , H04L2012/5672
摘要： A method for operating a router which combines virtual channels is disclosed, where both forward and reverse directed resource management cells are used to control transmission rate of a source computer. The merging router receives forward directed resource management cells from a plurality of upstream routers, where each forward directed resource management cell represents a virtual channel. The router: (1) replies to each upstream router with a reverse directed resource management cell; and (2) forwards to a downstream router a combined forward directed resource management cell, the combined forward directed resource management cell combining a plurality of virtual channels established between the router and the plurality of upstream routers.
摘要翻译：公开了一种用于操作组合虚拟信道的路由器的方法，其中使用正向和反向定向的资源管理小区来控制源计算机的传输速率。合并路由器从多个上游路由器接收前向资源管理小区，其中每个前向资源管理小区表示虚拟信道。路由器：（1）用反向资源管理单元回复每个上游路由器; 并且（2）将组合的前向资源管理小区转发到下游路由器，组合的前向资源管理小区组合在路由器和多个上游路由器之间建立的多个虚拟信道。

10. 发明授权

US07043447B2 Method for facilitating a transaction for purchasable content over an electronic network 有权
标题翻译：通过电子网络促进可购买内容的交易的方法
公开(公告)号：US07043447B2
公开(公告)日：2006-05-09
申请号：US09836094
申请日：2001-04-17
申请人： David A. Hughes , Allen J. Smith
发明人： David A. Hughes , Allen J. Smith
IPC分类号： G06Q30/00
CPC分类号： G06Q30/06 , G06F21/10 , G06Q30/0601 , G06Q30/0641
摘要： A transaction for purchasable content is facilitated over an electronic network, wherein the purchasable content includes downloadable digital data. A first presence is maintained on the electronic network to which a consumer may connect. A first page is transmitted from the first presence to the consumer over the electronic network, such that the first page includes information concerning the purchasable content. A command is received from the consumer over the electronic network indicating that the consumer wishes the transaction for the purchasable content. The consumer is automatically linked to a second presence on the electronic network in response to the command such that the consumer may interact with the second presence over the electronic network to complete the transaction for the purchasable content.
摘要翻译：通过电子网络促进可购买内容的交易，其中可购买内容包括可下载的数字数据。在消费者可以连接的电子网络上保持第一存在。第一页通过电子网络从第一存在传送到消费者，使得第一页包括关于可购买内容的信息。从消费者通过电子网络接收到指示消费者希望该可交易内容的交易的命令。消费者响应于命令自动地链接到电子网络上的第二存在，使得消费者可以通过电子网络与第二存在交互以完成可购买内容的交易。

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