System and method for regulating message flow in a digital data network

    公开(公告)号:US06570850B1

    公开(公告)日:2003-05-27

    申请号:US09065118

    申请日:1998-04-23

    IPC分类号: H04Q1104

    摘要: A system includes a plurality of computers interconnected by a network including one or more switching nodes. The computers transfer messages over virtual circuits established thereamong. A computer, as a source computer for one or more virtual circuit(s), schedules transmission of messages on a round-robin basis as among the virtual circuits for which it is source computer. Each switching node which forms part of a path for respective virtual circuits also forwards messages for virtual circuits in a round-robin manner, and, a computer, as a destination computer for one or more virtual circuit(s), schedules processing of received messages in a round-robin manner. Round-robin transmission, forwarding and processing at the destination provides a degree of fairness in message transmission as among the virtual circuits established over the network. In addition, messages are transmitted in one or more cells, with the round-robin transmission being on a cell basis, so as to reduce delays which may occur for short messages if a long messages were transmitted in full for one virtual circuit before beginning transmission of a short message for another virtual circuit. For each virtual circuit, the destination computer and each switching node along the path for the virtual circuit can generate a virtual circuit flow control message for transmission to the source computer to temporarily limit transmission over the virtual circuit if the amount of resources being taken up by messages for the virtual circuit exceeds predetermined thresholds, further providing fairness as among the virtual circuits. In addition, each switching node or computer can generate link flow control messages for transmission to neighboring devices in the network to temporarily limit transmission thereto if the amount of resources taken up by all virtual circuits exceeds predetermined thresholds, so as to reduce the likelihood of message loss.

    Operator introduction screen
    43.
    发明授权
    Operator introduction screen 失效
    操作员介绍屏幕

    公开(公告)号:US5105220A

    公开(公告)日:1992-04-14

    申请号:US563121

    申请日:1990-08-06

    IPC分类号: G03G15/00 G06F3/033

    CPC分类号: G06F3/033 G03G15/502

    摘要: A method and apparatus for coaxing a novice operator into dialogue with a touch screen display and for directing the operator to program the machine including a soft display actuator displayed on the first frame of the touch screen display of the user interface, a pointer displayed adjacent to the acutator, the pointer simulating a human action with respect to the actuator, the human action suggesting to the operator the manual engagement of the actuator, and a control responsive to the manual engagement of the actuator to provide a subsequent frame on the touch screen display of the user interface, the subsequent frames providing progressively more complex operator options.

    摘要翻译: 一种用于将新手操作员与触摸屏显示器对准的方法和装置,并且用于引导操作者对包括在用户界面的触摸屏显示器的第一帧上显示的软显示致动器的机器进行编程, 所述指示器,所述指示器模拟相对于所述致动器的人为动作,所述人类动作向所述操作者提供所述致动器的手动接合,以及响应于所述致动器的手动接合以提供所述触摸屏显示器上的后续帧的控制 的后续帧提供了更复杂的操作员选项。

    Power supply regulator circuit employing a transformer having a control
winding
    45.
    发明授权
    Power supply regulator circuit employing a transformer having a control winding 失效
    使用具有控制绕组的变压器的电源调节器电路

    公开(公告)号:US4375077A

    公开(公告)日:1983-02-22

    申请号:US238530

    申请日:1981-02-26

    申请人: James B. Williams

    发明人: James B. Williams

    IPC分类号: H02M3/28 G05F1/38 H02P13/12

    CPC分类号: G05F1/38

    摘要: A circuit for regulation of a D.C. output voltage in a switching power supply. The circuit contains a control transformer having primary, secondary and control windings. The output of the circuit is connected from the primary and secondary windings and is controlled by a switching element connected from the control winding. The circuit output error is provided to duty cycle modulation circuitry which varies the duty cycle of the switching element, thereby controlling the output voltage level.

    摘要翻译: 用于调节开关电源中直流输出电压的电路。 该电路包含一个具有初级,次级和控制绕组的控制变压器。 电路的输出端与初级绕组和次级绕组相连,由控制绕组连接的开关元件控制。 电路输出误差被提供给占空比调制电路,其改变开关元件的占空比,从而控制输出电压电平。

    Solubilization of Rafoxanide
    46.
    发明授权
    Solubilization of Rafoxanide 失效
    拉夫昔奈的溶解

    公开(公告)号:US4128632A

    公开(公告)日:1978-12-05

    申请号:US876968

    申请日:1978-02-13

    CPC分类号: A61K47/48176 A61K31/609

    摘要: A soluble complex of an insoluble drug, exemplified by Rafoxanide is formed with polyvinylpyrrolidone and water. The complex is formed by combining the insoluble drug and polyvinylpyrrolidone in a suitable water miscible organic solvent, preferably acetone or glycerolformal, and water. The complex is formed in situ. The solvent may be removed, if desired, and the complex remains in aqueous solution. The aqueous solution is then suitable for injection and may be used to treat fasciola or liver fluke infections.

    摘要翻译: {PG,1 A可溶性复合物的不溶性药物,例如Rafoxanide由聚乙烯吡咯烷酮和水形成。 络合物通过将不溶性药物和聚乙烯吡咯烷酮在合适的水混溶性有机溶剂,优选丙酮或甘油缩甲醛和水中混合而形成。 复合物原位形成。 如果需要,可以除去溶剂,并且复合物保留在水溶液中。 然后水溶液适合注射,可用于治疗筋膜炎或肝脏吸虫感染。