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    • 4. 发明授权
    • Rotary wireless network card with double rotating shafts
    • 带旋转轴的旋转无线网卡
    • US08469729B2
    • 2013-06-25
    • US13257861
    • 2009-12-14
    • Lei Ding
    • Lei Ding
    • H01R13/44
    • H01R35/02H01R13/72
    • The present disclosure provides a rotary wireless network card with double rotating shafts, which comprises a wireless network card body, an ultra-thin USB interface and a first rotating shaft, wherein at the top of the wireless network card body a opening is provided to accommodate the ultra-thin USB interface as withdrawn; the ultra-thin USB interface extends out of or returns back to the opening by rotating around the first rotating shaft; inside the wireless network card body a rotating shaft support is provided; a second rotating shaft in the opening is rotatably connected to the rotating shaft support; the second rotating shaft is accommodated outside the ultra-thin USB interface and connected to the ultra-thin USB interface; and when the second rotating shaft rotates in the opening, the ultra-thin USB interface and the first rotating shaft rotate in the opening along with the second rotating shaft. By designing a rotary head, the present disclosure frees a USB from the external connection with a cap or other objects that are easily lost or broken, and as the rotary shaft of the ultra-thin USB interface is smaller than common rotary shafts, the whole wireless network card is much shorter and narrower, causing no interference on the use of a neighboring interface.
    • 本公开提供一种具有双旋转轴的旋转无线网卡,其包括无线网卡主体,超薄USB接口和第一旋转轴,其中在无线网卡主体的顶部提供开口以容纳 超薄USB接口退出; 超薄USB接口通过围绕第一旋转轴旋转而延伸出或返回到开口; 在无线网卡内部提供旋转轴支撑; 开口中的第二旋转轴可旋转地连接到旋转轴支撑件; 第二旋转轴容纳在超薄USB接口外部,并连接到超薄USB接口; 并且当第二旋转轴在开口中旋转时,超薄USB接口和第一旋转轴与第二旋转轴一起在开口中旋转。 通过设计旋转磁头,本公开通过一个容易丢失或断开的盖或其它物体从外部连接中释放USB,并且当超薄USB接口的旋转轴小于普通旋转轴时,整个 无线网卡的时间要短得多,不会对相邻接口的使用造成干扰。
    • 5. 发明申请
    • CLASS D POWER AMPLIFIER
    • CLASS D功率放大器
    • US20120286868A1
    • 2012-11-15
    • US13106611
    • 2011-05-12
    • Baher HarounJoonhoi HurLei DingRahmi Hezar
    • Baher HarounJoonhoi HurLei DingRahmi Hezar
    • H03F3/217
    • H03F3/2173H03F1/26H03F2200/267H03F2200/297
    • A class D power amplifier (PA) is provided. The PA generally comprises a driver, output capacitor, a matching network, and a cancellation circuit. The driver has an input, an output, and a parasitic capacitance, and the input of the driver is configured to receive complementary first and second radio frequency (RF) signals, where there is a free-fly interval between consecutive pulses from the first and second RF signals. The output capacitor and cancellation circuit are each coupled to the output of the driver such that the cancellation circuit provides harmonic restoration at least during the free-fly interval, and the matching network is coupled to the output capacitor.
    • 提供D类功率放大器(PA)。 PA通常包括驱动器,输出电容器,匹配网络和消除电路。 驱动器具有输入,输出和寄生电容,并且驱动器的输入被配置为接收互补的第一和第二射频(RF)信号,其中在来自第一和第二射频的连续脉冲之间存在自由间隔 第二RF信号。 输出电容器和消除电路各自耦合到驱动器的输出,使得消除电路至少在空闲间隔期间提供谐波恢复,并且匹配网络耦合到输出电容器。
    • 7. 发明申请
    • HYSTERETIC BUCK CONVERTER HAVING DYNAMIC THRESHOLDS
    • 具有动态阈值的HYSTERETIC BUCK转换器
    • US20090322300A1
    • 2009-12-31
    • US12145807
    • 2008-06-25
    • John L. MelansonLei Ding
    • John L. MelansonLei Ding
    • G05F1/10
    • H02M3/1563H02M2001/0019H02M2001/0032Y02B70/16
    • A hysteretic buck converter provides improved regulation control, in particular for buck converter standby operation. A comparison circuit compares the output voltage of the buck converter to a waveform that is generated from an indication of the output current of the converter, so that the turn-on time of the converter is advanced as the output current demand increases. The resulting action anticipates a reduction in output voltage due to the increased current, preventing an excursion of the output voltage below the ripple voltage minimum. The turn-off time of the converter is controlled by an upper threshold that limits the ripple voltage maximum. The output current indication may be a measurement of output current, or may be a dynamic value calculated from the input voltage and the output voltage waveform.
    • 迟滞降压转换器提供改进的调节控制,特别是对于降压转换器待机操作。 比较电路将降压转换器的输出电压与从转换器的输出电流的指示产生的波形进行比较,使得转换器的导通时间随着输出电流需求的增加而提前。 所产生的动作预期由于增加的电流而导致的输出电压降低,防止输出电压偏离低于纹波电压的最小值。 转换器的关断时间由限制纹波电压最大值的上限阈值控制。 输出电流指示可以是输出电流的测量值,或者可以是从输入电压和输出电压波形计算出的动态值。