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2. 发明公开

EP1814031A2 Power control interface for a self-service apparatus 审中-公开
标题翻译： Leistungssteuerungsschnittstellefüreine Selbstbedienungsvorrichtung
公开(公告)号：EP1814031A2
公开(公告)日：2007-08-01
申请号：EP06255996.8
申请日：2006-11-23
申请人： NRC International Inc.
发明人： Henderson, Jim , Taylor, Mike , McBride, Michael , Mitchell, Graeme
IPC分类号： G06F11/07
CPC分类号： G06F11/0766
摘要： A particular problem for self-service devices incorporating USB devices (12) and a USB host (14) is that, when communication is lost between the USB host and one or more of the devices it is difficult (in particular situations) to reset those USB devices without manual intervention. We address that problem by using self-powered USB devices and/or bus powered devices connected to USB hubs, and by creating a power control interface (18) which is itself a USB device. That power control interface takes instructions from the USB host and is able to interrupt a power supply (20) to the USB devices to provoke automatic reset of those devices. Additionally, a watchdog application within the power control interface causes reset of that interface should it malfunction. Also, a master watchdog application at the USB host communicates with a slave watchdog application at the power control interface via a USB link. In the event of cessation of heartbeat signals between the master and slave the power control interface sends a hardware reset signal to the USB host.
摘要翻译：结合USB设备（12）和USB主机（14）的自助设备的一个特殊问题是当USB主机和一个或多个设备之间的通信丢失时，很难（特别是情况下）重置这些设备 USB设备无需手动干预。我们通过使用连接到USB集线器的自供电USB设备和/或总线供电设备以及通过创建本身是USB设备的电源控制接口（18）来解决该问题。该电源控制接口从USB主机接收指令，并能够中断USB设备的电源（20），以引发这些设备的自动复位。此外，电源控制接口内的看门狗应用程序会导致该接口的故障复位。此外，USB主机上的主控看门狗应用程序通过USB链接与电源控制接口上的从机看门狗应用程序进行通信。在主机和从机之间停止心跳信号的情况下，电源控制接口向USB主机发送硬件复位信号。

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