公开(公告)号：WO2016064625A1

公开(公告)日：2016-04-28

申请号：PCT/US2015/055369

申请日：2015-10-13

Applicant: QUALCOMM INCORPORATED

Inventor： SCUDERI, Antonino ,  HADJICHRISTOS, Aristotele

IPC: H03F1/30 ,  H03F3/193 ,  H03F3/72 ,  H03F3/24 ,  H03F3/21 ,  H03G1/00 ,  H03G3/00 ,  H03F1/22

CPC classification number: H03F3/19 ,  H03F1/223 ,  H03F1/56 ,  H03F3/193 ,  H03F3/211 ,  H03F3/245 ,  H03F3/72 ,  H03F2200/18 ,  H03F2200/222 ,  H03F2200/231 ,  H03F2200/234 ,  H03F2200/249 ,  H03F2200/252 ,  H03F2200/321 ,  H03F2200/366 ,  H03F2200/387 ,  H03F2200/411 ,  H03F2200/42 ,  H03F2200/432 ,  H03F2200/451 ,  H03F2200/522 ,  H03F2200/555 ,  H03F2200/61 ,  H03F2200/75 ,  H03F2203/21106 ,  H03F2203/21136 ,  H03F2203/21139 ,  H03F2203/21142 ,  H03F2203/21178 ,  H03F2203/7215 ,  H03F2203/7236 ,  H03G1/0029 ,  H03G1/0088 ,  H03G3/001 ,  H03G3/007 ,  H03G3/3042

Abstract: In one embodiment, the present disclosure includes a circuit comprising a first power amplifier stage having an input to receive an input signal, an output coupled to an output node, the first power amplifier stage receiving a time-varying power supply voltage. The circuit further includes a second power amplifier stage configured in parallel with the first power amplifier stage having an input to receive the input signal, an output coupled to the output node, the second power amplifier stage receiving the time-varying power supply voltage. A first gain of the first power amplifier stage decreases when the power supply voltage is in a first low voltage range, and a second gain of the second power amplifier stage compensates for the decreasing gain of the first power amplifier stage in the first low voltage range.

Abstract translation: 在一个实施例中，本公开包括电路，该电路包括具有用于接收输入信号的输入的第一功率放大器级，耦合到输出节点的输出，第一功率放大器级接收时变电源电压。 电路还包括与第一功率放大器并联配置的第二功率放大器级，其具有用于接收输入信号的输入，耦合到输出节点的输出，第二功率放大器级接收时变电源电压。 当电源电压处于第一低电压范围时，第一功率放大器级的第一增益减小，并且第二功率放大器级的第二增益补偿第一低功率放大器级在第一低电压范围内的增益减小 。

公开(公告)号：WO2012110409A1

公开(公告)日：2012-08-23

申请号：PCT/EP2012/052264

申请日：2012-02-10

Applicant: NUJIRA LIMITED ,  WIMPENNY, Gerard ,  HENSHAW, Robert

Inventor： WIMPENNY, Gerard ,  HENSHAW, Robert

IPC: H03F1/02 ,  H03F3/24

CPC classification number: H03F1/0233 ,  H03F1/02 ,  H03F1/0227 ,  H03F3/19 ,  H03F3/24 ,  H03F3/245 ,  H03F2200/102 ,  H03F2200/451 ,  H03G3/007

Abstract: There is provided an amplification stage comprising: an input scaling block (218, 220, 114) for scaling an input signal in dependence on an input scaling factor to generate a scaled version of the input signal; a power amplifier (118) for receiving the scaled version of the input signal and for generating an amplified version of said signal; an envelope detector (110) for generating a signal representing the envelope of the input signal; an envelope scaling block (234) for scaling the envelope signal in dependence on an envelope scaling factor to generate a scaled version of the envelope signal; a non- linear mapping block (108) for generating a voltage representative of the supply voltage in dependence on the scaled envelope signal; a modulator (116) for generating a power supply voltage for the amplifier in dependence on the voltage generated by the non- linear mapping block; and a power control block (107a, 107b) for maintaining a linear relationship between the envelope scaling factor and the input scaling factor.

Abstract translation: 提供了一种放大级，其包括：输入缩放块（218,220,114），用于根据输入缩放因子对输入信号进行缩放以产生输入信号的缩放版本; 功率放大器（118），用于接收所述输入信号的缩放版本并产生所述信号的放大版本; 用于产生表示输入信号的包络的信号的包络检测器（110）; 用于根据包络缩放因子缩放包络信号以产生包络信号的缩放版本的包络缩放块（234）; 用于根据经缩放的包络信号产生表示电源电压的电压的非线性映射块（108）; 调制器（116），用于根据非线性映射块产生的电压产生放大器的电源电压; 以及用于维持所述包络缩放因子与所述输入缩放因子之间的线性关系的功率控制块（107a，107b）。

公开(公告)号：WO2005048644A2

公开(公告)日：2005-05-26

申请号：PCT/US2004036697

申请日：2004-11-01

Applicant: MOTOROLA INC ,  BEBOODIAN ALI ,  PATTERSON AUDLEY F

Inventor： BEBOODIAN ALI ,  PATTERSON AUDLEY F

IPC: H03G3/00 ,  H03G7/00 ,  H04R3/00 ,  H04R

CPC classification number: H03G3/007 ,  H03G7/002 ,  H04R3/00

Abstract: The invention concerns a method (300) and system (100) for controlling audio output. The method includes the steps of inputting (312) an audio signal and a voltage level signal, measuring (314) the audio signal and the voltage level signal, mapping (316) the audio signal against at least one table (134) of predetermined corresponding gain targets (138) and selecting (318) at least one gain target for the audio signal. The mapping step and the selecting step are based at least in part on the measurement of the voltage level signal and the measurement of the audio signal. The method also includes the step of applying (320) the gain target to the audio signal.

Abstract translation: 本发明涉及用于控制音频输出的方法（300）和系统（100）。 该方法包括以下步骤：输入（312）音频信号和电压电平信号，测量（314）音频信号和电压电平信号，将音频信号映射（316）预定相应的至少一个表格 增益目标（138）和选择（318）音频信号的至少一个增益目标。 映射步骤和选择步骤至少部分地基于电压电平信号的测量和音频信号的测量。 该方法还包括将增益目标应用（320）到音频信号的步骤。

公开(公告)号：WO2012026984A1

公开(公告)日：2012-03-01

申请号：PCT/US2011/001504

申请日：2011-08-24

Applicant: SKYWORKS SOLUTIONS, INC. ,  RIPLEY, David, S. ,  LEHTOLA, Phil

Inventor： RIPLEY, David, S. ,  LEHTOLA, Phil

IPC: H03G3/20 ,  H03F3/24

CPC classification number: H03G3/007

Abstract: A power amplifier gain control system that monitors power supply voltage and changes the gain of the amplifier in response to changes in supply voltage. In systems subject to changes in supply voltage, such as in a battery powered system, the supply voltage can change over time. Reductions in the supply voltage may force the amplifier out of linear operation. A detector circuit compares the supply voltage in relation to one or more threshold values to determine if the supply voltage is less than a minimum nominal voltage. In response to the supply voltage falling below the minimal nominal voltage, amplifier gain is reduced to maintain amplifier linearity. A second threshold may be utilized in the comparison to the supply voltage when transitioning to the original gain level to prevent oscillation. A latching may be provided to prevent gain changes during active transmit periods.

Abstract translation: 功率放大器增益控制系统，用于监测电源电压，并根据电源电压的变化改变放大器的增益。 在电源电压变化的系统中，例如在电池供电系统中，电源电压随时间而变化。 电源电压的降低可能会迫使放大器脱离线性运行。 检测器电路将电源电压与一个或多个阈值进行比较，以确定电源电压是否小于最小额定电压。 响应于电源电压低于最小标称电压，减小放大器增益以保持放大器线性度。 当转换到原始增益电平以防止振荡时，可以将第二阈值用于与电源电压的比较。 可以提供锁存以防止在主动发射周期期间的增益变化。

公开(公告)号：WO2011124053A1

公开(公告)日：2011-10-13

申请号：PCT/CN2010/075976

申请日：2010-08-13

Applicant: 中兴通讯股份有限公司 ,  孙焘

Inventor： 孙焘

IPC: H03G3/20 ,  H04M1/60

CPC classification number: H04M1/6016 ,  H03G3/007

Abstract: 本发明公开了一种调节功放音量的方法和系统，其中方法包括：采集功放的电信号和/或功放的声信号，分别计算功放的电信号和/或声信号的失真度；根据电信号的失真度和/或声信号的失真度来调节功放的增益。本发明通过采集功放的电信号和/或声信号，计算功放的电信号和/或声信号的失真度，然后自动控制调节功放的增益，使得功放能够根据自身功率状态自动调节功放增益，能够兼容各种厂商生产的手机。

公开(公告)号：WO2008115284A3

公开(公告)日：2008-11-13

申请号：PCT/US2007081570

申请日：2007-10-16

Applicant: THX LTD ,  FINCHAM LAWRENCE R

Inventor： FINCHAM LAWRENCE R

IPC: H04R1/26 ,  H04R1/22 ,  H04R1/34 ,  H04R1/40

CPC classification number: H04R1/403 ,  H03G3/004 ,  H03G3/007 ,  H04R1/26 ,  H04R3/12 ,  H04R29/00 ,  H04R2420/09 ,  H04R2499/13 ,  H04R2499/15

Abstract: A sound reproduction system includes one or more arrays of drive units, coupled with sound processing allowing improved steerability, directional control, width control, and/or beam overlay. A speaker column may comprise two arrays facing one another, the drive units being perpendicular to the speaker unit front, with the acoustic output of each line array being compressed, turned and output from an elongate slot. The drive units may be staggered with respect to those in the opposing array. The arrays may be arc-shaped else straight. Selective delays to simulate an arced pattern. Differential delays applied to the drive units in a sub-array allow beam steering. Additional drive units, such as high frequency drivers, may be added along the length of the elongate slot or elsewhere to increase the dynamic frequency range of the speaker system. A collocated sound processor and amplifier output stage may be integrated with the speaker unit.

Abstract translation: 声音再现系统包括一个或多个驱动单元阵列，加上允许改进的转向性，方向控制，宽度控制和/或波束覆盖的声音处理。 扬声器列可以包括彼此面对的两个阵列，驱动单元垂直于扬声器单元前部，每个线阵列的声输出被压缩，转向并从细长槽输出。 驱动单元可以相对于相对阵列中的驱动单元错开。 阵列可以是弧形的，也可以是直的。 选择性延迟模拟弧形模式。 应用于子阵列中的驱动单元的差分延迟允许波束控制。 额外的驱动单元，例如高频驱动器，可以沿着细长槽的长度或其他地方增加以增加扬声器系统的动态频率范围。 并置的声音处理器和放大器输出级可以与扬声器单元集成。

公开(公告)号：WO2004068704A2

公开(公告)日：2004-08-12

申请号：PCT/DE2004/000168

申请日：2004-01-29

Applicant: SIEMENS AKTIENGESELLSCHAFT ,  ENDERLEIN, Janos-Gerold ,  WALBRACHT, Jörg

Inventor： ENDERLEIN, Janos-Gerold ,  WALBRACHT, Jörg

IPC: H03G3/00

CPC classification number: H03G3/007 ,  H03F1/0211 ,  H03F1/0244

Abstract: Die vorliegende Erfindung betrifft ein Verfahren zur Leistungsregelung für ein mobiles Kommunikationsendgerät, das ein Akku mit einer zeitabhängigen Akkuspannung und einen Leistungsverstärker umfasst, bei dem vor Senden eines Signals von einer Steuer- und Kontrolleinheit die Akkuspannung bestimmt und mit einer vorgegebenen oberen Schwellenspannung U nenn* verglichen wird, das Signal mit einer vorgegebenen Sendeleistung unter Erzeugung eines mit der vorgegebenen Sendeleistung korrelierenden Spannungseinbruchs Δ U1 gesendet wird, wenn die Akkuspannung oberhalb der oberen Schwellenspannung U nenn* liegt, das Signal mit einer reduzierten Sendeleistung unter Erzeugung eines mit der reduzierten Sendeleistung korrelierenden Spannungseinbruchs Δ U2 gesendet wird, wenn die Akkuspannung kleiner oder gleich der oberen Schwellenspannung U nenn* ist, wobei die reduzierte Sendeleistung so gewählt wird, dass die Akkuspannung abzüglich des mit der reduzierten Sendeleistung korrelierenden Spannungseinbruchs Δ U2 größer oder gleich einer vorgegebenen unteren Schwellenspannung U_Burst ist.

Abstract translation: 本发明涉及一种用于移动通信终端的功率控制的方法，包括用一个依赖于时间的电池电压和功率放大器，其中，所述电池电压从控制和监测单元发送信号之前确定，并且在预定的上限阈值电压U相比额定电池* 中，在规定的发送功率的信号，以产生与所述预定的传输功率电压骤降德尔塔U1被发送，如果电池电压的上限阈值电压U NOM以上*是，具有降低的传输功率的信号，以产生一个与所述降低的传输功率电压跌落相关德尔塔相关 U2被发送时，*当电池电压小于或等于上阈值电压U NOM，其中选择所述降低的传输功率，使得电池电压与所述降低的传输功率的相关性较低 德尔塔电压降U 2是大于或等于预定的下阈值电压是U_Burst。

公开(公告)号：WO00011781A1

公开(公告)日：2000-03-02

申请号：PCT/US1999/017625

申请日：1999-08-03

IPC: G10L21/02 ,  H03F1/32 ,  H03G3/00 ,  H03G3/20 ,  H03G11/00

CPC classification number: H03G3/007

Abstract: The generation of an audio output sound from an electronic communications device includes monitoring a level of an electrical power supply for the electrical communications device, and adjusting an audio input signal responsive to changes of the level of the electrical power supply for the electronic communications device. The adjusted audio input signal is amplified, and an output soundis generated responsive to the adjusted and amplified audio input signal. In addition, an audio output signal can be generated responsive to received sound including an echo of the output sound, an estimate of the echo of the output sound can be generated using the adjusted audio input signal and a model of an echo path of the output sound, and the echo portion of the audio output signal can be reduced using this estimate.

Abstract translation: 来自电子通信设备的音频输出声音的产生包括监测用于电气通信设备的电力供应的水平，以及响应于电子通信设备的电力供应的水平的变化来调整音频输入信号。 经调整的音频输入信号被放大，并且响应于调节和放大的音频输入信号产生输出声音。 此外，可以响应于包括输出声音的回波的接收到的声音来产生音频输出信号，可以使用经调整的音频输入信号和输出的回波路径的模型来生成输出声音的回波的估计 声音，并且可以使用该估计来减少音频输出信号的回波部分。

公开(公告)号：WO2017087246A1

公开(公告)日：2017-05-26

申请号：PCT/US2016/061304

申请日：2016-11-10

Applicant: CIRRUS LOGIC INTERNATIONAL SEMICONDUCTOR, LTD. ,  MAY, Jeffrey Allen

Inventor： MAY, Jeffrey Allen ,  AZRAI, Firas

IPC: H03G3/00 ,  H03G3/30 ,  H03G7/00

CPC classification number: H04R3/04 ,  H03G3/007 ,  H03G3/3005 ,  H03G7/002 ,  H03G7/007 ,  H04R29/001

Abstract: A method may include receiving information indicative of an amplitude of an audio output signal, receiving information indicative of a predicted voltage of a power supply of a signal path having an audio input for receiving an audio input signal and an audio output for generating the audio output signal based on the audio input signal, predicting from the information indicative of the amplitude of the audio output signal and the information indicative of the predicted voltage of the power supply whether the audio output signal will exceed an available supply voltage generated by the power supply, and responsive to determining the audio output signal will exceed the available supply voltage generated by the power supply, attenuating the audio input signal or a derivative thereof to reduce the amplitude of the audio output signal such that the audio output signal does not exceed the available supply voltage of the power supply.

Abstract translation: 一种方法可以包括：接收指示音频输出信号的幅度的信息;接收指示具有用于接收音频输入信号的音频输入的信号路径的电源的预测电压的信息;以及 用于基于音频输入信号生成音频输出信号的音频输出，根据指示音频输出信号的幅度的信息和指示电源的预测电压的信息来预测音频输出信号是否将超过可用 由电源产生的电源电压，并且响应于确定音频输出信号将超过由电源产生的可用电源电压，衰减音频输入信号或其导数，以减小音频输出信号的幅度，使得音频 输出信号不会超过电源的可用电源电压。

公开(公告)号：WO2013034496A1

公开(公告)日：2013-03-14

申请号：PCT/EP2012/066966

申请日：2012-08-31

Applicant: ST-ERICSSON SA ,  LENZ, Kuno ,  CHIANALE, Alain ,  PERRIN, Danika ,  SIRITO-OLIVIER, Philippe

Inventor： LENZ, Kuno ,  CHIANALE, Alain ,  PERRIN, Danika ,  SIRITO-OLIVIER, Philippe

IPC: H03G3/00

CPC classification number: H03G3/007

Abstract: There is described a method for controlling the gain on an amplifier present on a circuit comprising at least : a power supply, such as a battery, wherein the power supply voltage decreases over time,- an amplifier outputting an output signal; and, an automatic gain control for controlling the gain of the amplifier. The method comprises : a step of monitoring the supply voltage and, as the supply voltage is comprised between a first supply voltage threshold and a second supply voltage threshold, smaller than the first supply voltage threshold, controlling the gain of the amplifier so that a maximal amplitude of the output signal decreases as the supply voltage decreases. A third supply voltage threshold is comprised between the first and second supply voltage thresholds, the maximal amplitude allowed diminishing with the supply voltage decreasing according to a first function for supply voltages comprised between the first supply voltage threshold and the third supply voltage threshold, and the maximal amplitude allowed diminishing with the supply voltage decreasing according to a second function for supply voltages comprised between the second supply voltage threshold and the third supply voltage threshold. In addition, the first function has a slope which is smaller, in absolute value, than a slope of the second function at the third voltage threshold.

Abstract translation: 描述了一种用于控制电路上存在的放大器的增益的方法，该方法至少包括：电源，例如电池，其中电源电压随时间而减小，放大器输出输出信号; 以及用于控制放大器的增益的自动增益控制。 该方法包括：监测电源电压的步骤，并且当电源电压包括在第一电源电压阈值和第二电源电压阈值之间时，小于第一电源电压阈值，控制放大器的增益使得最大 输出信号的幅度随着电源电压的降低而减小。 第三电源电压阈值包括在第一和第二电源电压阈值之间，当电源电压根据第一电源电压阈值和第三电源电压阈值之间的电源电压的第一功能而减小时，允许的最大幅度减小， 最大幅度允许随着电源电压根据第二功能而减小，用于包括在第二电源电压阈值和第三电源电压阈值之间的电源电压。 此外，第一函数具有比第三电压阈值处的第二函数的斜率小的绝对值的斜率。