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    • 7. 发明申请
    • CALIBRATION DEVICE
    • 校准装置
    • US20080125998A1
    • 2008-05-29
    • US11771389
    • 2007-06-29
    • Li HuangGeorge W. Conner
    • Li HuangGeorge W. Conner
    • G01R35/00G06F19/00
    • G01R31/3191
    • A calibration device is provided for use with automatic test equipment (ATE). The calibration device includes circuitry having a fanout circuit. The compare-side fanout circuit has an input connected to a first channel of the ATE and outputs connected to N (N>1) channels of the ATE, where the N channels do not include the first channel. The ATE propagates an edge on the first channel, and the fanout circuit transmits the edge to the N channels. Optionally, a calibration device for use with automatic test equipment includes a drive-side circuit. The drive-side circuit includes circuitry having multiple inputs connected to N (N>1) channels of the ATE and an output connected to a second channel of the ATE that is not one of the N channels. The ATE propagates an edge on each of the N-channels and the circuitry propagates each edge to the second channel of the ATE.
    • 提供校准装置用于自动测试设备(ATE)。 校准装置包括具有扇出电路的电路。 比较侧扇出电路具有连接到ATE的第一通道的输入和连接到ATE的N(N> 1)个通道的输出,其中N个通道不包括第一通道。 ATE在第一个通道上传播边缘,扇出电路将边缘传输到N个通道。 可选地,与自动测试设备一起使用的校准装置包括驱动侧电路。 驱动侧电路包括具有连接到ATE的N(N> 1)个通道的多个输入的电路,以及连接到不是N个通道中的一个的ATE的第二通道的输出。 ATE在每个N通道上传播边缘,电路将每个边沿传播到ATE的第二个通道。
    • 8. 发明授权
    • Mobile communication device with receiver speaker
    • 带接收扬声器的移动通信设备
    • US08699963B2
    • 2014-04-15
    • US13239485
    • 2011-09-22
    • Chao ChenLi HuangDan Kaufman
    • Chao ChenLi HuangDan Kaufman
    • H04B1/40
    • H04M1/03H04M1/0214H04M1/0235H04M1/6016H04M1/6041H04M1/72558Y02D70/1224Y02D70/142Y02D70/144Y02D70/162Y02D70/23
    • An audio subsystem in a mobile communication device has a speaker. In one implementation, the audio subsystem has a higher-gain power amplifier, a lower-gain power amplifier, and a switching system configured to route signals produced by the lower-gain power amplifier to the speaker while the device is operative in a first mode and configured to route signals produced by the higher-gain power amplifier to the speaker while the device is operative in a second mode. In another implementation, the audio subsystem has a power amplifier coupled to the speaker and a power supply control controlled to provide voltage at a first voltage level to the power amplifier while the device is operative in a first mode and controlled to provide voltage at a second, higher, voltage level to the power amplifier while the device is operative in a second mode.
    • 移动通信设备中的音频子系统具有扬声器。 在一个实现中,音频子系统具有较高增益功率放大器,较低增益功率放大器和配置成将该低增益功率放大器产生的信号路由到扬声器的开关系统,同时器件以第一模式工作 并且被配置为在所述设备在第二模式下操作时将由所述较高增益功率放大器产生的信号路由到所述扬声器。 在另一实施方式中,音频子系统具有耦合到扬声器的功率放大器和被控制为在功率放大器处提供第一电压电平的电源控制器,同时该装置以第一模式工作并被控制以在第二模式下提供电压 当器件在第二模式下工作时,对功率放大器的电压电平更高。