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    • 3. 发明申请
    • ELECTROMAGNETIC SENSING DEVICE HAVING MULTI-POINT TOUCH FUNCTION
    • 具有多点触控功能的电磁感应装置
    • US20110205191A1
    • 2011-08-25
    • US13120815
    • 2009-09-08
    • Tao HouHonggang WangJie WangHang Yin
    • Tao HouHonggang WangJie WangHang Yin
    • G06F3/033
    • G06F3/046G06F3/03545G06F2203/04808
    • An electromagnetic sensing device having a multi-point touch function comprises electromagnetic pens (101) for inputting graphics and an electromagnetic sensing board for detecting trace information of the inputted graphics. Each of the electromagnetic pens (101) has a resonance circuit provided therein, and the electromagnetic sensing board has an electromagnetic wave transmitter (102), an electromagnetic wave receiver (105), a controller (109) and an electric wave frequency switching unit (103) provided therein. The electric wave frequency switching unit (103) of the electromagnetic sensing board receives an instruction from the controller (109) to control the electromagnetic wave transmitter (102) to transmit electromagnetic waves at different frequencies, and the electromagnetic pens (101) generate electromagnetic resonance waves at respective resonance frequencies. The electromagnetic wave receiver (105) receives the electromagnetic resonance waves at the respective resonance frequencies so that the trace information of the electromagnetic pens (101) having the respective resonance frequencies is detected. With this electromagnetic sensing device, it is possible to achieve a wireless and passive electromagnetic sensing device having the multi-point touch function.
    • 具有多点触摸功能的电磁感测装置包括用于输入图形的电磁笔(101)和用于检测输入图形的跟踪信息的电磁感测板。 每个电磁笔(101)具有设置在其中的谐振电路,电磁感测板具有电磁波发射器(102),电磁波接收器(105),控制器(109)和电波频率切换单元 103)。 电磁感测板的电波频率切换单元(103)从控制器(109)接收控制电磁波发射器(102)发送不同频率的电磁波的指令,电磁笔(101)产生电磁谐振 波在各自的共振频率。 电磁波接收器(105)以相应的谐振频率接收电磁谐振波,从而检测具有相应谐振频率的电磁笔(101)的迹线信息。 利用该电磁感测装置,可以实现具有多点触摸功能的无线和被动电磁感测装置。
    • 4. 发明授权
    • Current limiting circuit and voltage regulator using the same
    • 限流电路和电压调节器使用相同
    • US07986499B2
    • 2011-07-26
    • US12343273
    • 2008-12-23
    • Zhao WangHang YinWenbo Tian
    • Zhao WangHang YinWenbo Tian
    • H02H9/08
    • G05F3/262
    • Techniques pertaining to a voltage regulator with a current limiting circuit having low quiescent current are disclosed. According to one aspect of the present invention, a current limiting circuit is provided for limiting a current passing through an output pass circuit of a voltage regulator, the current limiting circuit comprises: a current sampling circuit for sampling the current passing through the output pass circuit to obtain a duplicated current being proportional to the current passing through the output pass circuit; a current mirror circuit for producing a mirror current being proportional to the duplicated current with the duplicated current as a reference current; a current to voltage converter for producing a voltage being proportional to the mirror current; and a voltage comparator for comparing the voltage produced by the current to voltage converter with a threshold voltage and turning off the output pass circuit when the voltage produced by the current to voltage converter is larger than or equal to the threshold voltage.
    • 公开了具有具有低静态电流的限流电路的电压调节器的技术。 根据本发明的一个方面,提供限流电路来限制通过电压调节器的输出通路的电流,该限流电路包括:电流采样电路,用于对通过输出通路的电流进行采样 以获得与通过输出通过电路的电流成比例的复制电流; 用于产生与复制电流成比例的反射电流的电流镜电路,其中复制电流作为参考电流; 用于产生与镜电流成比例的电压的电流 - 电压转换器; 以及电压比较器,用于将电流与电压转换器产生的电压与阈值电压进行比较,并且当由电流 - 电压转换器产生的电压大于或等于阈值电压时,关闭输出通过电路。
    • 5. 发明申请
    • Current limiting circuit and voltage regulator using the same
    • 限流电路和电压调节器使用相同
    • US20090167263A1
    • 2009-07-02
    • US12343273
    • 2008-12-23
    • Zhao WangHang YinWenbo Tian
    • Zhao WangHang YinWenbo Tian
    • G05F1/10
    • G05F3/262
    • Techniques pertaining to a voltage regulator with a current limiting circuit having low quiescent current are disclosed. According to one aspect of the present invention, a current limiting circuit is provided for limiting a current passing through an output pass circuit of a voltage regulator, the current limiting circuit comprises: a current sampling circuit for sampling the current passing through the output pass circuit to obtain a duplicated current being proportional to the current passing through the output pass circuit; a current mirror circuit for producing a mirror current being proportional to the duplicated current with the duplicated current as a reference current; a current to voltage converter for producing a voltage being proportional to the mirror current; and a voltage comparator for comparing the voltage produced by the current to voltage converter with a threshold voltage and turning off the output pass circuit when the voltage produced by the current to voltage converter is larger than or equal to the threshold voltage.
    • 公开了具有具有低静态电流的限流电路的电压调节器的技术。 根据本发明的一个方面,提供限流电路,用于限制通过电压调节器的输出通道电路的电流,该限流电路包括:电流采样电路,用于对通过输出通路的电流进行采样 以获得与通过输出通过电路的电流成比例的复制电流; 用于产生与复制电流成比例的反射电流的电流镜电路,其中复制电流作为参考电流; 用于产生与镜电流成比例的电压的电流 - 电压转换器; 以及电压比较器,用于将电流与电压转换器产生的电压与阈值电压进行比较,并且当由电流 - 电压转换器产生的电压大于或等于阈值电压时,关闭输出通过电路。
    • 7. 发明申请
    • Battery Protection Circuit
    • 电池保护电路
    • US20100264881A1
    • 2010-10-21
    • US12507537
    • 2009-07-22
    • Hang YinZhao WangWenbo Tian
    • Hang YinZhao WangWenbo Tian
    • H02J7/00H02H3/20H03K17/687
    • H02J7/0031H02J2007/0037H02J2007/004
    • A battery protection circuit with quickly testable design is disclosed. According to one embodiment, the battery protection circuit includes a battery voltage detection circuit configured to detect a battery voltage, output an effective trigger signal if the battery voltage reaches a voltage protection threshold, and output an ineffective trigger signal otherwise; a delay circuit configured to receive the trigger signal, output an effective status signal if the trigger signal is maintained effective continuously over a period of time, and outputs an ineffective status signal otherwise; a protection driver configured to receive the trigger signal and the status signal, enter a driving state when both the trigger signal and the status signal are effective, enter a non-driving state when both the trigger signal and the status signal are ineffective, and enter a ready driving state when the trigger signal is effective and the status signal is ineffective.
    • 公开了具有快速可测试设计的电池保护电路。 根据一个实施例,电池保护电路包括电池电压检测电路,其被配置为检测电池电压,如果电池电压达到电压保护阈值则输出有效触发信号,否则输出无效触发信号; 延迟电路,被配置为接收触发信号,如果触发信号在一段时间内连续地保持有效,则输出有效状态信号,否则输出无效状态信号; 配置为接收触发信号和状态信号的保护驱动器,当触发信号和状态信号都有效时进入驱动状态,当触发信号和状态信号都无效时进入非驱动状态,并且进入 当触发信号有效并且状态信号无效时,就绪驱动状态。