Frequency synthesis using a ring oscillator
    2.
    发明授权
    Frequency synthesis using a ring oscillator 有权
    使用环形振荡器进行频率合成

    公开(公告)号:US08742856B2

    公开(公告)日:2014-06-03

    申请号:US13436564

    申请日:2012-03-30

    IPC分类号: H03K3/03

    CPC分类号: H03L7/099 H03K3/0315

    摘要: The present disclosure is directed to a method and apparatus for providing an output oscillating signal at a desired frequency. In at least one example, the apparatus includes a weak inversion structure configured to set a small reference current. A current mirror configured to provide a replica current based on the small reference current and a tuning word. A ring oscillator is configured to be powered by a supply at a voltage determined based on the replica current. The tuning word is adjustable to change the voltage such that the ring oscillator provides the output oscillating signal at the desired frequency.

    摘要翻译: 本公开涉及一种用于以期望的频率提供输出振荡信号的方法和装置。 在至少一个示例中,该装置包括被配置为设置小参考电流的弱反转结构。 配置为基于小参考电流提供复制电流的电流镜和调谐字。 环形振荡器被配置为由基于复制电流确定的电压的电源供电。 调谐字可调,以改变电压,使得环形振荡器以期望的频率提供输出振荡信号。

    Frequency Synthesis Using a Ring Oscillator
    3.
    发明申请
    Frequency Synthesis Using a Ring Oscillator 有权
    使用环形振荡器进行频率合成

    公开(公告)号:US20130113573A1

    公开(公告)日:2013-05-09

    申请号:US13436564

    申请日:2012-03-30

    IPC分类号: H03L7/00 H03K3/03

    CPC分类号: H03L7/099 H03K3/0315

    摘要: The present disclosure is directed to a method and apparatus for providing an output oscillating signal at a desired frequency. In at least one example, the apparatus includes a weak inversion structure configured to set a small reference current. A current mirror configured to provide a replica current based on the small reference current and a tuning word. A ring oscillator is configured to be powered by a supply at a voltage determined based on the replica current. The tuning word is adjustable to change the voltage such that the ring oscillator provides the output oscillating signal at the desired frequency.

    摘要翻译: 本公开涉及一种用于以期望的频率提供输出振荡信号的方法和装置。 在至少一个示例中,该装置包括被配置为设置小参考电流的弱反转结构。 配置为基于小参考电流提供复制电流的电流镜和调谐字。 环形振荡器被配置为由基于复制电流确定的电压的电源供电。 调谐字可调,以改变电压,使得环形振荡器以期望的频率提供输出振荡信号。

    Air leak self-diagnosis for a communication device
    4.
    发明授权
    Air leak self-diagnosis for a communication device 有权
    通气装置的漏气自诊断

    公开(公告)号:US07570769B2

    公开(公告)日:2009-08-04

    申请号:US10830669

    申请日:2004-04-23

    IPC分类号: H04R29/00 G01M3/34

    CPC分类号: H04R29/001

    摘要: A communication device (100) is provided with a technique (400) for self-diagnosing an air leak. The leak is determined without having to open the communication device by applying a temporary excitation signal to the speaker terminals (402) to produce a damped response (404) and then monitoring the damped response (406) of the speaker.

    摘要翻译: 通信装置(100)具有自动诊断漏气的技术(400)。 确定泄漏,而不必通过向扬声器端子(402)施加临时激励信号来产生阻尼响应(404)并随后监测扬声器的阻尼响应(406)来打开通信设备。

    Switch fabric backplane flow management using credit-based flow control
    5.
    发明授权
    Switch fabric backplane flow management using credit-based flow control 有权
    使用基于信用流量控制的交换机背板流量管理

    公开(公告)号:US07263066B1

    公开(公告)日:2007-08-28

    申请号:US10395369

    申请日:2003-03-24

    IPC分类号: H04L12/26

    摘要: A credit-based system and method are provided for managing backplane traffic flow in a packet communications switch fabric. The method comprises: accepting information packets including cells and cell headers with destination information; modifying the destination information in the received cell headers; routing information packets between an input port card and output port cards on backplane data links through an intervening crossbar; at the input port card, maintaining a credit counter for each output port card channel; decrementing the counter in response to transmitting cells from the input port card; generating credits in response to transmitting cells from an output port card channel; and, using modified destination information, sending the generated credits to increment the counter. In some aspects, modifying the destination information in the received packet headers includes: extracting the output port card termination from the card field; and, inserting the input port card source in the card field.

    摘要翻译: 提供了基于信用的系统和方法来管理分组通信交换结构中的背板业务流。 该方法包括:接收目的地信息包括小区和小区标题的信息包; 修改所接收的信元头部中的目的地信息; 在输入端口卡和背板数据链路上的输出端口卡之间通过插入的交叉开关路由信息包; 在输入端口卡处,保持每个输出端口卡通道的信用计数器; 响应于从输入端口卡传输单元而递减计数器; 响应于从输出端口卡信道发送信元而产生信用; 并且使用修改的目的地信息,发送生成的信用以递增计数器。 在一些方面,修改接收到的分组头部中的目的地信息包括:从卡片段提取输出端口卡终端; 并将输入端口卡卡插入卡片区域。

    System and method for tolerating data link faults in communications with a switch fabric
    6.
    发明授权
    System and method for tolerating data link faults in communications with a switch fabric 有权
    用于容忍与交换结构通信中的数据链路故障的系统和方法

    公开(公告)号:US07221652B1

    公开(公告)日:2007-05-22

    申请号:US10378480

    申请日:2003-03-03

    IPC分类号: G01R31/08

    摘要: A system and method are provided for tolerating data line faults in a packet communications network. The method comprises: serially transmitting information packets from at least one traffic manager (TM); at a switch fabric, accepting information packets at a plurality of ingress ports, the information packets addressing destination port card egress ports; selectively connecting port card ingress ports to port card egress ports; serially supplying information packets from a plurality of port card egress ports; sensing a connection fault between the switch fabric and the TM; and, in response to sensing the fault, reselecting connections between the switch fabric port card ports and the TM. Some aspects comprise: an ingress memory subsystem (iMS) receiving cells on an ingress port exceeding an error threshold. Then, reselecting connections between the port card ports and the TM includes the iMS sending a message to the iTM identifying the faulty ingress connection.

    摘要翻译: 提供了一种用于容忍分组通信网络中的数据线路故障的系统和方法。 该方法包括:从至少一个业务管理器(TM)串行发送信息分组; 在交换结构中,接收多个入口端口的信息分组,所述信息分组寻址目的地端口卡出口; 将端口卡入口端口选择性连接到端口卡出口端口; 从多个端口卡出口端口串行提供信息包; 感测交换结构与TM之间的连接故障; 并且响应于感测到故障,重新选择交换结构端口卡端口和TM之间的连接。 一些方面包括:入口存储器子系统(iMS)在入口端口上接收超过错误阈值的小区。 然后,重新选择端口卡端口和TM之间的连接包括iMS向iTM发送消息,以识别错误的入口连接。

    Air leak self-diagnosis for a communication device
    9.
    发明申请
    Air leak self-diagnosis for a communication device 有权
    通气装置的漏气自诊断

    公开(公告)号:US20050238178A1

    公开(公告)日:2005-10-27

    申请号:US10830669

    申请日:2004-04-23

    IPC分类号: H04R1/28 H04R3/00 H04R29/00

    CPC分类号: H04R29/001

    摘要: A communication device (100) is provided with a technique (400) for self-diagnosing an air leak. The leak is determined without having to open the communication device by applying a temporary excitation signal to the speaker terminals (402) to produce a damped response (404) and then monitoring the damped response (406) of the speaker.

    摘要翻译: 通信装置(100)具有自动诊断漏气的技术(400)。 确定泄漏,而不必通过向扬声器端子(402)施加临时激励信号来产生阻尼响应(404)并随后监测扬声器的阻尼响应(406)来打开通信设备。

    System and method for synchronizing switch fabric backplane link management credit counters
    10.
    发明授权
    System and method for synchronizing switch fabric backplane link management credit counters 有权
    交换机背板链路管理信用计数器同步的系统和方法

    公开(公告)号:US07304987B1

    公开(公告)日:2007-12-04

    申请号:US10395367

    申请日:2003-03-24

    IPC分类号: H04L12/50

    摘要: A system and method are provided for resynchronizing backplane link management credit counters in a packet communications switch fabric. The method comprises: at an input port card ingress port, accepting information packets including cells and cell headers with destination information; modifying the destination information in the received cell headers; routing information packets between the input port card and output port cards on backplane data links through an intervening crossbar; at the input port card, maintaining a credit counter for each output port card channel; decrementing the counter in response to transmitting cells from the input port card; generating credits in response to transmitting cells from an output port card channel; sending the generated credits to increment the counter, using the modified destination information; and, using the generated credit flow to resynchronize the credit counter.

    摘要翻译: 提供了用于在分组通信交换结构中重新同步背板链路管理信用计数器的系统和方法。 该方法包括:在输入端口卡入口端口,接收包括具有目的地信息的小区和小区标题的信息分组; 修改所接收的信元头部中的目的地信息; 在输入端口卡和输出端口卡之间通过插入式交叉开关将信息包路由在背板数据链路上; 在输入端口卡处,保持每个输出端口卡通道的信用计数器; 响应于从输入端口卡传输单元而递减计数器; 响应于从输出端口卡信道发送信元而产生信用; 使用修改的目的地信息发送生成的信用以增加计数器; 并使用生成的信用流来重新同步信用计数器。