公开(公告)号：US07254723B1

公开(公告)日：2007-08-07

申请号：US10641990

申请日：2003-08-15

申请人： Hugues Favey ,  Paul Loughnane

发明人： Hugues Favey ,  Paul Loughnane

IPC分类号： G06F1/00 ,  G06F1/32

CPC分类号： G06F1/3203 ,  G06F1/3215 ,  G06F1/325

摘要： Embodiments of the present invention are directed to methods and apparatus for managing current consumption of a peripheral device to meet power specification of the host system having a preset average current supply limit, a preset peak current supply limit, or both. In specific embodiments, the host system has a current supply limit available for supplying current to the peripheral device. The peripheral device operates in a low current consumption mode and a peak current consumption mode which is intermittent over time. The peripheral device draws a low current in the low current consumption mode which is lower than the current supply limit and drawing a peak current in the peak current consumption mode which is higher than the current supply limit. The apparatus comprises a reservoir configured to store excess energy from the host system during the low current consumption mode where the low current drawn by the peripheral device is lower than the current supply limit available from the host system. A switch is configured to direct the excess energy from the host system to the reservoir for storage during the low current consumption mode of the peripheral device and to allow energy to be drawn from the reservoir to operate the peripheral device in the peak current consumption mode.

摘要翻译： 本发明的实施例涉及用于管理外围设备的电流消耗以满足具有预设平均电流供应限制，预设峰值电流供应限制或两者的主机系统的功率规格的方法和装置。 在具体实施例中，主机系统具有可用于向外围设备提供电流的电流供应限制。 外围设备工作在低电流消耗模式和随时间间歇的峰值电流消耗模式。 外围设备在低电流消耗模式下吸收低电流，该电流低于电流供应限制，并在高于当前电源极限的峰值电流消耗模式下绘制峰值电流。 该装置包括：储存器，被配置为在低电流消耗模式期间存储来自主机系统的多余能量，其中由外围设备汲取的低电流低于可从主机系统获得的当前供电限制。 开关被配置为在外围设备的低电流消耗模式期间将来自主机系统的多余能量引导到储存器以进行存储，并且允许从储存器抽取能量以在峰值电流消耗模式下操作外围设备。