Topology for flexible and precise signal timing adjustment

    公开(公告)号:US06985365B2

    公开(公告)日:2006-01-10

    申请号:US09966649

    申请日:2001-09-28

    IPC分类号: H05K7/06 H01P1/18

    CPC分类号: G06F13/4027

    摘要: The system and methods describe a computer system implementing an adjustable control signal path whose length may be precisely adjusted to control timing of a control signal that propagates along the path. One such adjustable signal path has two clusters of possible signal paths. Each of the signal paths in each cluster has a length, and the overall length of the control signal path may be adjusted by selectively implementing one signal path from each of the clusters by electrically connecting that path into the electrical circuit by the selective installation of zero ohm resistors. In this way, a system designer may design several possible signal path lengths on to a motherboard or printed circuit card, and implement the path length which provides the most precise signal timing adjustment.

    Modem sharing
    5.
    发明授权
    Modem sharing 失效
    调制解调器共享

    公开(公告)号:US5790895A

    公开(公告)日:1998-08-04

    申请号:US733415

    申请日:1996-10-18

    IPC分类号: G06F9/50 H04M11/00

    CPC分类号: G06F9/5011

    摘要: An apparatus supports the sharing of a resource among computer applications. The computer system has a processor which adapted for executing a first application in a first mode of operation and a second application in a second mode of operation. The computer system also has a communication port adapted to receive the resource. The communication port is normally allocated to receive accesses from the second application. The computer system also has a virtual port for emulating the communication port. The virtual port diverts accesses from the first application directed at the communication port and buffers the accesses in the virtual port. An arbitrator is connected to the processor, the communication port, and the virtual port. The arbitrator claims the communication port from the second application and forwards accesses received by the virtual port to the communication port if the first application is accessing the resource and if the communication port is idle. Further, the arbitrator reallocates the communication port back to the second application upon the termination of accesses to the resource by the first application.

    摘要翻译: 一种装置支持在计算机应用程序之间共享资源。 计算机系统具有处理器,其适于在第一操作模式和第二操作模式中执行第一应用。 计算机系统还具有适于接收资源的通信端口。 通信端口通常被分配以接收来自第二应用的访问。 计算机系统还具有用于仿真通信端口的虚拟端口。 虚拟端口转发来自针对通信端口的第一应用的访问,并缓存虚拟端口中的访问。 仲裁器连接到处理器,通信端口和虚拟端口。 如果第一应用正在访问资源,并且通信端口空闲,则仲裁器从第二应用声明通信端口并将由虚拟端口接收的访问转发到通信端口。 此外,当第一应用终止对资源的访问时,仲裁器将通信端口重新分配回第二应用。

    Method and apparatus for disabling a processor in a multiprocessor computer
    8.
    发明授权
    Method and apparatus for disabling a processor in a multiprocessor computer 有权
    用于在多处理器计算机中禁用处理器的方法和装置

    公开(公告)号:US06496881B1

    公开(公告)日:2002-12-17

    申请号:US09266506

    申请日:1999-03-11

    IPC分类号: G06F1310

    摘要: A multiprocessor computer includes a processor disabling scheme which disables a processor that has been designated to boot the computer but fails to boot the computer. For computers having voltage regulator modules (VRMs) to power each processor, a control device directs a VRM associated with the failed boot processor to cease supplying power in response to the processor's failure. For computers without VRMs, a transistor controls the delivery of power from the power supply to each respective processor. If a designated boot processor fails to boot the system, the control device turns off the appropriate transistor to disable the failed processor.

    摘要翻译: 多处理器计算机包括处理器禁用方案,其禁用已被指定引导计算机但未能引导计算机的处理器。 对于具有电压调节器模块(VRM)为每个处理器供电的计算机,控制设备指示与故障引导处理器相关联的VRM以响应于处理器的故障而停止供电。 对于没有VRM的电脑,晶体管控制从电源向每个相应处理器传递电力。 如果指定的引导处理器无法启动系统,则控制设备将关闭适当的晶体管以禁用失败的处理器。

    Transparent keyboard hot plug
    9.
    发明授权
    Transparent keyboard hot plug 失效
    透明键盘热插拔

    公开(公告)号:US5898861A

    公开(公告)日:1999-04-27

    申请号:US733521

    申请日:1996-10-18

    CPC分类号: G06F3/038 G06F3/023

    摘要: A computer system that provides for transparent plugging and unplugging of a keyboard independent of system operation. A virtual keyboard device communicates with the system keyboard controller when no keyboard is plugged. The virtual keyboard device provides appropriate responses to inquiries from the operating system during startup, allowing the system to boot without an actual keyboard being present. When a keyboard is plugged, its presence is detected and it is configured by a virtual keyboard controller. The newly configured keyboard is then coupled to the system keyboard controller. On unplug, the lack of a keyboard is detected by monitoring the power supply to the keyboard, whereupon the virtual keyboard is again coupled to the system keyboard controller.

    摘要翻译: 提供独立于系统操作的透明插拔和键盘拔出的计算机系统。 当没有键盘插入时,虚拟键盘设备与系统键盘控制器进行通信。 虚拟键盘设备在启动期间为操作系统的查询提供适当的响应,允许系统在没有实际键盘存在的情况下启动。 当键盘插入时,检测到它的存在,并且由虚拟键盘控制器配置。 新配置的键盘然后耦合到系统键盘控制器。 在拔下插头时,通过监视键盘的电源来检测到键盘的缺失,因此虚拟键盘再次耦合到系统键盘控制器。