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    • 6. 发明授权
    • Apparatus and method to support USB enumeration of a bus powered handheld device
    • 支持总线供电的手持设备的USB枚举的装置和方法
    • US07523338B2
    • 2009-04-21
    • US11248430
    • 2005-10-13
    • Runbo FuJonathan HalseStewart Morris
    • Runbo FuJonathan HalseStewart Morris
    • G06F1/00G06F1/32G06F11/30
    • G06F1/266
    • The proposed solution relates to enumeration of a handheld device by a host controller in a laptop, and more particularly to a method and apparatus to support USB enumeration of such a handheld device where greater than 100 mA is required to enumerate the chipset associated with the handheld device. The proposed solution comprises a handheld device with an added USB microcontroller. In operation, the integrated USB microcontroller is only powered up when the USB charging cable is plugged in and the rechargeable battery level is below the threshold required to power up the handheld device with less than 100 mA pre-enumeration USB current. The integrated USB microcontroller performs USB enumeration with the host controller using the pre-enumeration 100 mA current, so that the charging current can be increased to 500 mA post enumeration. Once the rechargeable battery is charged to above the threshold for the handheld device's chipset or when 500 mA current can be drawn from it, the chipset of the handheld device is powered up to take over USB communication from the USB microcontroller.
    • 所提出的解决方案涉及膝上型计算机中的主机控制器对手持设备的枚举,更具体地涉及一种支持这种手持设备的USB枚举的方法和装置,其中需要大于100mA来枚举与手持设备相关联的芯片组 设备。 所提出的解决方案包括具有添加的USB微控制器的手持设备。 在运行时,集成的USB微控制器只有在USB充电电缆插入时才启动,并且可充电电池电量低于手持设备以小于100 mA预枚数USB电流启动所需的阈值。 集成的USB微控制器使用预先枚举100 mA电流,与主机控制器执行USB枚举,以便充电电流可以增加到500 mA后计数。 一旦可充电电池充电到手持设备芯片组的阈值以上,或者当可以从其中抽取500 mA电流时,手持设备的芯片组通电从USB微控制器接管USB通信。
    • 8. 发明申请
    • METHOD FOR DETERMINING BATTERY CAPACITY
    • 确定电池容量的方法
    • US20120316816A1
    • 2012-12-13
    • US13589524
    • 2012-08-20
    • Farhad AhmedRunbo Fu
    • Farhad AhmedRunbo Fu
    • G01R31/36G06F19/00
    • G06F19/00G01R31/3624G01R31/3651H01M10/44H01M10/48
    • An electrical device is powered by a battery. The device includes transition phase determining circuitry operatively connected to the battery to determine that the battery has entered a transition phase based on the occurrence of a change in direction of current flowing through the battery. Battery capacity determining circuitry is operatively connected to the transition phase determining circuitry and configured to determine, in response the transition phase determining circuitry determining that the battery is in the transition phase, a capacity of the battery based on a transition phase battery capacity model of capacity-vs.-voltage. The transition phase determining circuitry is further configured to determine an end of the transition phase based on the transition phase battery capacity model and a non-transition battery capacity model of capacity-vs.-voltage yielding the same capacity value for a given measured voltage of the battery.
    • 电气设备由电池供电。 该装置包括可操作地连接到电池的过渡相位确定电路,以基于电流流过电流的方向的变化的发生来确定电池已经进入过渡阶段。 电池容量确定电路可操作地连接到过渡相位确定电路,并被配置为响应于确定电池处于过渡阶段的过渡相位确定电路确定基于电容器的过渡阶段电池容量模型的容量 电压。 过渡相位确定电路还被配置为基于过渡阶段电池容量模型和容量对电压的非转换电池容量模型来确定给定测量电压的相同容量值的过渡阶段的结束 电池。