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    • 7. 发明授权
    • Overcharge current protection circuit and battery pack using same
    • 过充电保护电路和电池组使用相同
    • US5602460A
    • 1997-02-11
    • US430669
    • 1995-04-28
    • Jose M. FernandezVernon MeadowsErika D. MackIilonga P. Thandiwe
    • Jose M. FernandezVernon MeadowsErika D. MackIilonga P. Thandiwe
    • H02J7/00H02J7/04
    • H02J7/0031
    • A battery pack (62) comprises cells (74), and is charged by a charger (64) providing a current level. The charger (64) is a typical nickel-cadmium battery charger providing a first charge current level in excess of an optimum charge current level. The battery pack (62) further comprises a thermal sensing element (76) and an overcurrent charge protection circuit having an overcurrent switch (78), current sense circuit (80), comparator circuit (82), and temperature signal switch (84). If the current level through the cells (74) exceeds the optimum charge current level, the current sense circuit (80) provides a signal to comparator circuit (82) which actuates the temperature signal switch (84), simulating a hot battery pack. The charger (64) then switches to a second charge current level which does not exceed the optimum charge current level. If the charger (64) does not change current levels, a switch delay (86), after a brief period, accumulates enough voltage to actuate a driver switch (88) which opens the overcurrent switch (78), disconnecting the cells (74) from the charger (64).
    • 电池组(62)包括电池(74),并由提供电流电平的充电器(64)充电。 充电器(64)是典型的镍镉电池充电器,其提供超过最佳充电电流电平的第一充电电流电平。 电池组(62)还包括热敏元件(76)和具有过电流开关(78),电流检测电路(80),比较器电路(82)和温度信号开关(84)的过电流充电保护电路。 如果通过单元(74)的电流电平超过最佳充电电流电平,则电流感测电路(80)向比较器电路(82)提供信号,该电路致动温度信号开关(84),模拟热电池组。 然后,充电器(64)切换到不超过最佳充电电流电平的第二充电电流电平。 如果充电器(64)不改变电流水平,则在短时间之后,开关延迟(86)累积足够的电压以致动打开过电流开关(78)的驱动器开关(88),断开电池(74), 从充电器(64)。
    • 9. 发明授权
    • Method and apparatus for fast booting a portable computing device allowing for immediate operation
    • 用于快速启动便携式计算设备以允许立即操作的方法和装置
    • US08156320B2
    • 2012-04-10
    • US12207106
    • 2008-09-09
    • Jaime A. BorrasJose M. FernandezZaffer S. Merchant
    • Jaime A. BorrasJose M. FernandezZaffer S. Merchant
    • G06F9/00G06F13/00
    • G06F9/44573G06F9/4401
    • The present invention discloses a portable computing device (200) including a processor (202), non-volatile memory (206), and a volatile memory (208). An execute in place (XIP) kernel (210) stored in the non-volatile memory is executed immediately upon powering up the device. As the XIP kernel is executed, the processor maintain state and context information (212) in the volatile memory. The XIP kernel includes user interface and application segments, allow the user to perform some functions immediately upon powering up the device. While executing the XIP kernel and full code instantiation (214) is loaded into the volatile memory. The full code instantiation includes identical code as is in the XIP kernel, in addition to other code. Once loaded, execution is switched (412) from the XIP kernel to the full code instantiation, providing full functionality of the device.
    • 本发明公开了一种包括处理器(202),非易失性存储器(206)和易失性存储器(208)的便携式计算设备(200)。 存储在非易失性存储器中的执行就绪(XIP)内核(210)在加电设备时立即执行。 当执行XIP内核时,处理器将状态和上下文信息(212)维护在易失性存储器中。 XIP内核包括用户界面和应用程序段,允许用户在启动设备时立即执行某些功能。 在执行XIP内核并将完整代码实例化(214)加载到易失性存储器中时。 除了其他代码之外,完整的代码实例包括与XIP内核中相同的代码。 一旦加载,执行从XIP内核切换到(412)到完全代码实例化,提供设备的全部功能。