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    System and method of reducing power consumption for audio playback
    2.
    发明专利
    System and method of reducing power consumption for audio playback 审中-公开
    降低音频播放功耗的系统和方法

    公开(公告)号：JP2012135015A

    公开(公告)日：2012-07-12

    申请号：JP2012030620

    申请日：2012-02-15

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： SEYFOLLAH BAZARJANI ,  MIAO GUOQING ,  JOSEPH R FITZGERALD ,  PRAJAKT V KULKARNI ,  JUSTIN JOSEPH ROSEN GAGNE ,  JEAN H MCALLISTER ,  JEFFREY HINRICHS ,  VAN DER WAGT JAN PAUL

    IPC: H03F1/02 ,  H03F3/21 ,  H03F3/22

    CPC classification number: H03F1/0222 ,  H03F1/0211 ,  H03F2200/03 ,  H03G3/30 ,  H03G3/3005 ,  H03G3/32

    Abstract: PROBLEM TO BE SOLVED: To provide a system and method of improving the efficiency in the power consumption of an audio system.SOLUTION: Power delivered from a power supply analog section 212 to an analog section including a power amplifier 206-L is adjusted in response to a volume level indicated by a volume control module 216 and/or in response to a detected characteristic of an input audio signal. Thus, in this system and method, the analog section is operated in a manner that is related to the level of the signal it is processing. Additionally, the system and method also relate to a technique of adjusting the dynamic ranges of the digital signal and the analog signal to improve the overall dynamic range of the system without needing to consume additional power.

    Abstract translation: 要解决的问题：提供一种提高音频系统的功率消耗效率的系统和方法。 解决方案：响应于由音量控制模块216指示的音量水平和/或响应于检测到的特性，调节从电源模拟部分212传递到包括功率放大器206-L的模拟部分的功率 输入音频信号。 因此，在该系统和方法中，模拟部分以与正在处理的信号的电平相关的方式操作。 此外，该系统和方法还涉及调整数字信号和模拟信号的动态范围的技术，以改善系统的整体动态范围，而不需要消耗附加功率。 版权所有（C）2012，JPO＆INPIT

    Sistema y procedimiento de reducción de ruido de chasquidos y crepitaciones en dispositivos de reproducción de audio
    3.
    发明专利
    Sistema y procedimiento de reducción de ruido de chasquidos y crepitaciones en dispositivos de reproducción de audio 未知

    公开(公告)号：ES2393440T3

    公开(公告)日：2012-12-21

    申请号：ES09709121

    申请日：2009-01-29

    Applicant: QUALCOMM INC

    Inventor： MIAO GUOQING

    IPC: H03F3/187 ,  H03F1/30 ,  H03F3/45

    Abstract: Un sistema (700) de audio que comprende:un medio para amplificar una señal de audio de entrada para generar una señal de audio de salida; yun medio (710) para reducir el ruido generado por un altavoz asociado (750) aplicando suavemente unatensión de CC a una salida de los medios de amplificación o eliminándola suavemente de la misma,caracterizado porque el medio para la reducción de ruido comprende:un medio para acoplar de forma variable una fuente de la tensión de CC a la salida de los medios deamplificación; yun medio (712) para generar una señal de control que disminuye suavemente la resistencia de losmedios de acoplamiento variable para aplicar suavemente a la salida de los medios de amplificación latensión de CC procedente de la fuente de una manera que reduzca o elimine el ruido generado por elaltavoz asociado durante una operación de encendido.

    Protección de descarga electrostática de bomba de carga
    5.
    发明专利
    Protección de descarga electrostática de bomba de carga 未知

    公开(公告)号：ES2543812T3

    公开(公告)日：2015-08-24

    申请号：ES12716132

    申请日：2012-03-14

    Applicant: QUALCOMM INC

    Inventor： SRIVASTAVA ANKIT ,  WORLEY EUGENE R ,  MIAO GUOQING ,  QUAN XIAOHONG

    IPC: H03F1/52 ,  H01L27/02 ,  H02M1/32 ,  H02M3/07

    Abstract: Un aparato que comprende: una pluralidad de conmutadores (M1-M6) configurados para sucesivamente acoplar y desacoplar eléctricamente los primer (C1p) y segundo (C1n) nodos de un condensador flotante (125) a una pluralidad de nodos (Vin, Vpos, Vneg, GND), en el que la pluralidad de conmutadores comprende un primer conmutador (M5) que acopla el segundo nodo del condensador flotante a un nodo de tensión de salida negativa (Vneg), el primer conmutador está configurado para acoplar eléctricamente el segundo nodo del condensador flotante al nodo de tensión de salida negativa en respuesta a la detección de un evento de ESD entre un nodo de tensión de suministro (Vdd) y el nodo de tensión de salida negativa.

    LOW GM TRANSCONDUCTOR
    7.
    发明申请
    LOW GM TRANSCONDUCTOR 审中-公开
    低通GM TRANSCONDUCTOR

    公开(公告)号：WO2013142782A3

    公开(公告)日：2014-01-09

    申请号：PCT/US2013033482

    申请日：2013-03-22

    Applicant: QUALCOMM INC

    Inventor： MEHRABI ARASH ,  DEYERLE IV THURMAN S ,  MIAO GUOQING

    IPC: G05F1/56 ,  H03F3/45

    CPC classification number: H03F3/45

    Abstract: Techniques for designing a transconductor configurable to have a low transconductance. In one aspect, a voltage to current conversion module is coupled to a 1:N current replication module. The voltage to current conversion module may be implemented as an operational amplifier configured with negative feedback to generate a current through a transistor, wherein such current is proportional to the difference between an input voltage and a common-mode reference. The 1:N current replication module is configured to mirror the generated current in another transistor, to a predetermined ratio, such that the output current is also proportional to the difference between the input voltage and the common-mode reference. In exemplary embodiments, the output stage driving the output current may be configured to operate as a Class A, Class B, or Class AB type amplifier.

    Abstract translation: 用于设计跨导体的技术，可配置为具有低跨导。 在一个方面，电压到电流转换模块耦合到1：N电流复制模块。 电压到电流转换模块可以被实现为配置有负反馈以产生通过晶体管的电流的运算放大器，其中这种电流与输入电压和共模参考之间的差成比例。 1：N电流复制模块被配置为将另一晶体管中产生的电流镜像到预定比例，使得输出电流也与输入电压和共模参考之间的差成比例。 在示例性实施例中，驱动输出电流的输出级可被配置为作为A类，B类或AB类放大器工作。

    CHARGE PUMP SURGE CURRENT REDUCTION
    9.
    发明申请
    CHARGE PUMP SURGE CURRENT REDUCTION 审中-公开
    充电泵浪涌电流减少

    公开(公告)号：WO2012125766A2

    公开(公告)日：2012-09-20

    申请号：PCT/US2012029128

    申请日：2012-03-14

    Applicant: QUALCOMM INC ,  QUAN XIAOHONG ,  SRIVASTAVA ANKIT ,  MIAO GUOQING

    Inventor： QUAN XIAOHONG ,  SRIVASTAVA ANKIT ,  MIAO GUOQING

    CPC classification number: H02M3/07 ,  H02M1/36 ,  H02M2001/0045 ,  H02M2003/071 ,  H02M2003/072

    Abstract: Techniques for reducing surge current in charge pumps. In an exemplary embodiment, one or more switches coupling a terminal of a flying capacitor to a voltage supply are configured to have variable on-resistance. When the charge pump is configured to switch a gain mode from a lower gain to a higher gain, the one or more variable resistance switches are configured to have a decreasing resistance profile over time. In this manner, surge current drawn from the voltage supply at the outset of the gain switch may be limited, while the on-resistance during steady-state charging and discharging may be kept low. Similar techniques are provided to decrease the surge current from a bypass switch coupling the supply voltage to a positive output voltage of the charge pump.

    Abstract translation: 降低电荷泵浪涌电流的技术。 在示例性实施例中，将飞跨电容器的端子耦合到电压源的一个或多个开关被配置为具有可变的导通电阻。 当电荷泵被配置为将增益模式从较低增益切换到较高增益时，一个或多个可变电阻开关被配置为具有随时间减小的电阻分布。 以这种方式，可以限制在增益开关开始时从电压源引出的浪涌电流，而稳态充放电期间的导通电阻可以保持较低。 提供了类似的技术以减少将电源电压耦合到电荷泵的正输出电压的旁路开关的浪涌电流。

    SYSTEM AND METHOD OF REDUCING CLICK AND POP NOISE IN AUDIO PLAYBACK DEVICES
    10.
    发明申请
    SYSTEM AND METHOD OF REDUCING CLICK AND POP NOISE IN AUDIO PLAYBACK DEVICES 审中-公开
    降低音频播放设备中的点击和POP噪声的系统和方法

    公开(公告)号：WO2009099904A3

    公开(公告)日：2009-10-15

    申请号：PCT/US2009032504

    申请日：2009-01-29

    Applicant: QUALCOMM INC ,  MIAO GUOQING

    Inventor： MIAO GUOQING

    IPC: H03F1/30

    CPC classification number: H03F1/305 ,  H03F3/187 ,  H03F3/45475 ,  H03F2200/03 ,  H03F2203/45136

    Abstract: An audio system that reduces or eliminates click and pop noise during power up and power down operations. In particular, the audio system includes an amplifier with an input adapted to receive an input audio signal and an output adapted to produce an amplified output audio signal for an associated speaker. The audio system further includes a noise reduction circuit adapted to smoothly apply and remove a DC voltage to and from the output of the amplifier in a manner that reduces or eliminates click and pop noise from being generated by the associated speaker. The DC voltage at the output of the amplifier may be derived from a DC reference voltage source and/or from the input audio signal.

    Abstract translation: 在开机和关机操作期间降低或消除咔嗒声和pop噗声的音频系统。 特别地，音频系统包括具有适于接收输入音频信号的输入和适于为相关联的扬声器产生放大的输出音频信号的输出的放大器。 音频系统进一步包括降噪电路，其适于以减少或消除由相关扬声器产生的咔嗒声和砰声噪声的方式平滑地向放大器的输出施加直流电压或从放大器的输出移除直流电压。 放大器输出处的DC电压可以来自DC参考电压源和/或来自输入音频信号。

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