Battery protection circuits
    1.
    发明授权
    Battery protection circuits 有权
    电池保护电路

    公开(公告)号:US09048661B2

    公开(公告)日:2015-06-02

    申请号:US13535311

    申请日:2012-06-27

    Applicant: Zhibin Zhang

    Inventor: Zhibin Zhang

    Abstract: An overvoltage battery protection circuit includes a voltage comparator configured to compare a scaled version of a voltage with a voltage reference and indicate an overvoltage condition when the scaled voltage exceeds the voltage reference. The voltage comparator is powered by a first voltage domain. The circuit further includes a first transistor coupled to an output of the voltage comparator and configured to turn on when the voltage comparator indicates the overvoltage condition and generate an overvoltage signal for at least one external device. The circuit further includes a second transistor coupled to the overvoltage signal and configured to turn on when the overvoltage signal is asserted and force the overvoltage signal to remain asserted independent of the first voltage domain. The first and second transistors are powered by a second voltage domain.

    Abstract translation: 过电压电池保护电路包括电压比较器,其被配置为将电压的缩放版本与电压基准进行比较,并且当缩放电压超过电压基准时指示过电压状态。 电压比较器由第一电压域供电。 电路还包括耦合到电压比较器的输出的第一晶体管,并且被配置为当电压比较器指示过电压状态时导通,并且为至少一个外部器件产生过电压信号。 电路还包括耦合到过电压信号的第二晶体管,并且被配置为当过电压信号被断言时导通,并强迫过电压信号独立于第一电压域保持断言。 第一和第二晶体管由第二电压域供电。

    BATTERY PROTECTION CIRCUITS
    3.
    发明申请
    BATTERY PROTECTION CIRCUITS 有权
    电池保护电路

    公开(公告)号:US20140002006A1

    公开(公告)日:2014-01-02

    申请号:US13535311

    申请日:2012-06-27

    Applicant: ZHIBIN ZHANG

    Inventor: ZHIBIN ZHANG

    Abstract: An overvoltage battery protection circuit includes a voltage comparator configured to compare a scaled version of a voltage with a voltage reference and indicate an overvoltage condition when the scaled voltage exceeds the voltage reference. The voltage comparator is powered by a first voltage domain. The circuit further includes a first transistor coupled to an output of the voltage comparator and configured to turn on when the voltage comparator indicates the overvoltage condition and generate an overvoltage signal for at least one external device. The circuit further includes a second transistor coupled to the overvoltage signal and configured to turn on when the overvoltage signal is asserted and force the overvoltage signal to remain asserted independent of the first voltage domain. The first and second transistors are powered by a second voltage domain.

    Abstract translation: 过电压电池保护电路包括电压比较器,其被配置为将电压的缩放版本与电压基准进行比较,并且当缩放电压超过电压基准时指示过电压状态。 电压比较器由第一电压域供电。 电路还包括耦合到电压比较器的输出的第一晶体管,并且被配置为当电压比较器指示过电压状态时导通,并且为至少一个外部器件产生过电压信号。 电路还包括耦合到过电压信号的第二晶体管,并且被配置为当过电压信号被断言时导通,并强迫过电压信号独立于第一电压域保持断言。 第一和第二晶体管由第二电压域供电。

    Wearable satellite receiver with reduced power consumption

    公开(公告)号:US10893198B1

    公开(公告)日:2021-01-12

    申请号:US16143008

    申请日:2018-09-26

    Abstract: Systems and methods for determining a location of a wearable electronic device are disclosed. In some aspects, the device includes a position acquisition device and an accelerometer. A hardware processor included in the device may be configured to generally maintain the position acquisition device in a low power state to save power. When a video or image is captured, it may tag the video or image with first location information. Given the inoperative position acquisition device, a current location may not be known. In some aspects, in response to a need for location information, measurements from an accelerometer may be stored. The position acquisition device may also be transitioned to an operative state, and after some time delay, a second location determined. In some aspects, the location of the capture may then be obtained based on the acceleration measurements and the second location.

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