发明授权
- 专利标题: Electrically disconnecting a peripheral device
- 专利标题(中): 电气断开外围设备
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申请号: US11530977申请日: 2006-09-12
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公开(公告)号: US07325733B2公开(公告)日: 2008-02-05
- 发明人: Henry Wurzburg , Tetsuo Yamamoto , Mark Colman Atchison
- 申请人: Henry Wurzburg , Tetsuo Yamamoto , Mark Colman Atchison
- 申请人地址: US NY Hauppauge
- 专利权人: Standard Microsystems Corporation
- 当前专利权人: Standard Microsystems Corporation
- 当前专利权人地址: US NY Hauppauge
- 代理机构: Meyertons Hood Kivlin Kowert & Goetzel, P.C.
- 代理商 Jeffrey C. Hood; Russell E. Henrichs
- 主分类号: G06K7/06
- IPC分类号: G06K7/06
摘要:
If a USB device is turned off or is not active, the device may be electrically disconnected from a USB host controller. The device may be electrically disconnected through a physical interface on the device. In some embodiments, if the device becomes active during a wait period (e.g., 2-3 seconds) prior to electrically disconnecting the device, the device may not be electrically disconnected. In some embodiments, when the device is electrically disconnected from the USB host controller and no system activity of a bus mastering peripheral is occurring, the CPU may enter a low power state if other conditions are met. In some embodiments, if the USB device becomes active after electrically disconnecting, the electrical disconnection may be discontinued.
公开/授权文献
- US20070023499A1 Electrically Disconnecting a Peripheral Device 公开/授权日:2007-02-01