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    Microphone assembly
    2.
    发明授权
    Microphone assembly 有权
    麦克风组合

    公开(公告)号：US09392361B2

    公开(公告)日：2016-07-12

    申请号：US13505599

    申请日：2010-10-20

    Applicant: Rishi C. Agarwal ,  Shyam S. Somayajula ,  Lionel Cimaz

    Inventor： Rishi C. Agarwal ,  Shyam S. Somayajula ,  Lionel Cimaz

    IPC: H04R3/00 ,  H03F3/187 ,  H03F3/45

    CPC classification number: H04R3/00 ,  H03F3/187 ,  H03F3/45475 ,  H03F3/45928 ,  H03F2200/375 ,  H03F2203/45101 ,  H03F2203/45136 ,  H03F2203/45586 ,  H03F2203/45588 ,  H04R2410/00

    Abstract: Described herein is a microphone assembly for an electronic device incorporating a microphone. The microphone assembly includes a microphone interface that enables direct coupling of inputs from the microphone to a preamplifier. For the purpose, the microphone interface includes a DC servo loop. The DC servo loop provides a DC path for supplying a DC bias current to the microphone and an AC path to receive the AC output obtained from the microphone. The AC path and the DC path allow separation of the AC output of the microphone from the DC bias current. The microphone interface is implemented using reduced number of IC pin interfaces and external components to achieve compactness of the device.

    Abstract translation: 这里描述的是用于装有麦克风的电子设备的麦克风组件。 麦克风组件包括麦克风接口，其能够将来自麦克风的输入直接耦合到前置放大器。 为此，麦克风接口包括一个直流伺服回路。 DC伺服环路提供用于向麦克风提供DC偏置电流的DC路径和用于接收从麦克风获得的AC输出的AC路径。 AC路径和DC路径允许麦克风的AC输出与DC偏置电流分离。 麦克风接口使用减少数量的IC引脚接口和外部组件实现，以实现设备的紧凑性。

    DIFFERENTIAL AMPLIFIER AND DISPLAY DRIVER INCLUDING THE SAME
    3.
    发明申请
    DIFFERENTIAL AMPLIFIER AND DISPLAY DRIVER INCLUDING THE SAME 有权
    差分放大器和显示驱动器，包括它们

    公开(公告)号：US20160071453A1

    公开(公告)日：2016-03-10

    申请号：US14845264

    申请日：2015-09-03

    Applicant: LAPIS Semiconductor Co., Ltd.

    Inventor： Koji HIGUCHI

    IPC: G09G3/20 ,  H03F3/45

    CPC classification number: H03F3/393 ,  G09G3/20 ,  G09G2310/0254 ,  G09G2310/0291 ,  G09G2320/0247 ,  G09G2330/026 ,  H03F3/45183 ,  H03F3/45775 ,  H03F2200/396 ,  H03F2200/417 ,  H03F2203/45212 ,  H03F2203/45586 ,  H03F2203/45588

    Abstract: When the offsets of the first and second differential units have polarities different from each other, the first and second differential units are both set to a normal connection state, i.e., a state in which the input voltage is supplied to the first input terminal of each of the first and second differential units and the output voltage is supplied to the second input terminal of each of the first and second differential units. When the offsets of the first and second differential units have the same polarity, on the other hand, the first differential unit is set to the above normal connection state and the second differential unit is set to a chopping connection state in which the output voltage is supplied to the first input terminal and the input voltage is supplied to the second input terminal.

    Abstract translation: 当第一和第二差分单元的偏移具有彼此不同的极性时，第一和第二差分单元均被设置为正常连接状态，即，将输入电压提供给每个的第一输入端的状态 的第一和第二差分单元，并且输出电压被提供给第一和第二差分单元中的每一个的第二输入端子。 当第一和第二差分单元的偏移具有相同的极性时，另一方面，第一差分单元被设置为上述正常连接状态，并且第二差分单元被设置为斩波连接状态，其中输出电压为 提供给第一输入端子，并且将输入电压提供给第二输入端子。

    CIRCUITS FOR SEMICONDUCTOR DEVICE LEAKAGE CANCELLATION
    4.
    发明申请
    CIRCUITS FOR SEMICONDUCTOR DEVICE LEAKAGE CANCELLATION 审中-公开
    用于半导体器件泄漏电路的电路

    公开(公告)号：US20150002209A1

    公开(公告)日：2015-01-01

    申请号：US13930792

    申请日：2013-06-28

    Applicant: QUALCOMM INCORPORATED

    Inventor： Ramkumar Sivakumar

    IPC: H03K17/687

    CPC classification number: H03K17/687 ,  G11C7/12 ,  H03F3/45968 ,  H03F2203/45514 ,  H03F2203/45586 ,  H03F2203/45588

    Abstract: One feature pertains to a circuit comprising a semiconductor leakage source device and a semiconductor leakage cancellation device that are both coupled to a signal line. The leakage source device generates a leakage current on the signal line, and the leakage cancellation device generates a leakage cancellation current on the signal line. The leakage cancellation device is sized and shaped in relation to the leakage source device such that the leakage cancellation current effectively cancels the leakage current on the signal line. Moreover, the leakage cancellation current cancels the leakage current on the signal line despite variations in at least one of process, temperature, and/or signal line voltages. In one example, the signal line is a virtual ground node of a capacitive feedback amplifier and the leakage source device is a switch between the virtual ground node and a first terminal of a feedback capacitor of the amplifier.

    Abstract translation: 一个特征涉及包括耦合到信号线的半导体泄漏源装置和半导体泄漏消除装置的电路。 泄漏源装置在信号线上产生泄漏电流，泄漏消除装置在信号线上产生泄漏消除电流。 泄漏消除装置的尺寸和形状相对于泄漏源装置成形，使得泄漏抵消电流有效地消除信号线上的泄漏电流。 此外，尽管在工艺，温度和/或信号线电压中的至少一个有变化，但是泄漏抵消电流消除了信号线上的漏电流。 在一个示例中，信号线是电容性反馈放大器的虚拟接地节点，并且泄漏源装置是虚拟接地节点与放大器的反馈电容器的第一端子之间的开关。

    Non-inverting amplifier and voltage supply circuit including the same
    7.
    发明授权
    Non-inverting amplifier and voltage supply circuit including the same 有权
    同相放大器和电源电路包括相同

    公开(公告)号：US08183916B2

    公开(公告)日：2012-05-22

    申请号：US12777636

    申请日：2010-05-11

    Applicant: Sang-Woog Byon

    Inventor： Sang-Woog Byon

    IPC: H03F3/45

    CPC classification number: H03F3/45928 ,  H03F2203/45528 ,  H03F2203/45586 ,  H03F2203/45588 ,  H03F2203/45594 ,  H03F2203/45678 ,  H03F2203/45681

    Abstract: A non-inverting amplifier includes an operational amplifier, an input resistor, and a feedback resistor. The operational amplifier amplifies and outputs a difference between an input voltage and a voltage of a control node. The input resistor is connected between a reference voltage port and the control node. The feedback resistor is connected to an output port of the operational amplifier and the control node. The non-inverting amplifier supplies a control current to the control node for controlling an offset voltage of the output port.

    Abstract translation: 非反相放大器包括运算放大器，输入电阻和反馈电阻。 运算放大器放大并输出控制节点的输入电压和电压之间的差。 输入电阻连接在参考电压端口和控制节点之间。 反馈电阻连接到运算放大器和控制节点的输出端口。 非反相放大器向控制节点提供控制电流以控制输出端口的偏移电压。

    Background offset cancellation scheme for continuous time gm-C filters
    10.
    发明授权
    Background offset cancellation scheme for continuous time gm-C filters 有权
    连续时间gm-C滤波器的背景偏移消除方案

    公开(公告)号：US07876147B1

    公开(公告)日：2011-01-25

    申请号：US12472229

    申请日：2009-05-26

    Applicant: Fu-Tai An ,  Xuemei Liu

    Inventor： Fu-Tai An ,  Xuemei Liu

    IPC: H03K5/00

    CPC classification number: H03F3/45183 ,  H03F3/45179 ,  H03F3/45982 ,  H03F3/72 ,  H03F2200/405 ,  H03F2203/45586 ,  H03F2203/45588 ,  H03F2203/45678 ,  H03F2203/45681 ,  H03H11/0472 ,  H03H2210/015 ,  H03H2210/021 ,  H03H2210/04

    Abstract: The present disclosure describes methods and apparatus for compensating DC offset in a filter having a plurality of transconductance pieces. In one implementation, the method includes measuring a corresponding DC offset associated with each transconductance piece of the plurality of transconductance pieces; storing each measured DC offset corresponding to each transconductance piece of the plurality of transconductance pieces; selecting one or more of the plurality of transconductance pieces to be used during operation of the filter; deriving an aggregate amount of DC offset for the one or more selected transconductance pieces, the aggregate amount of DC offset being derived based on each stored DC offset value corresponding to each selected transconductance piece; and applying the derived aggregate amount of DC offset to the one or more selected transconductance pieces to compensate for the DC offset during the operation of the filter.

    Abstract translation: 本公开描述了用于补偿具有多个跨导件的滤波器中的DC偏移的方法和装置。 在一个实施方案中，该方法包括测量与多个跨导件中的每个跨导片相关联的对应DC偏移; 存储与所述多个跨导片中的每个跨导片相对应的每个测量的DC偏移; 选择在所述过滤器的操作期间使用的所述多个跨导件中的一个或多个; 导出所述一个或多个所选跨导件的DC偏移的总量，基于对应于每个所选跨导件的每个存储的DC偏移值导出DC偏移的总量; 以及将所导出的DC偏移量的总量应用于所述一个或多个选择的跨导片，以补偿在所述滤波器的操作期间的所述DC偏移。

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