公开(公告)号：US08452428B2

公开(公告)日：2013-05-28

申请号：US12268305

申请日：2008-11-10

申请人： Hongwei Kong ,  Nelson Sollenberger ,  Todd L. Brooks ,  Yee Ling Cheung ,  Xicheng Jiang

发明人： Hongwei Kong ,  Nelson Sollenberger ,  Todd L. Brooks ,  Yee Ling Cheung ,  Xicheng Jiang

IPC分类号： G06F17/00 ,  G06F13/24 ,  G06F13/32 ,  G01R27/08 ,  H04M1/00

CPC分类号： G06F13/4072

摘要： Aspects of a method and system for detecting and identifying electronic accessories or peripherals utilizing a hardware audio CODEC are provided. In this regard, a hardware audio CODEC may be operable to compare one or more voltages on one or more biased pins of an accessory or peripheral port to one or more reference voltages and generate one or more digital representations of the one or more voltages on the biased one or more pins. An accessory or peripheral attached to the accessory or peripheral port may be identified based on the comparison and/or the generated one or more digital representations. The one or more bias voltages may be controlled based on a result of the comparison and/or the generated digital representations. The one or more bias voltages may be reduced after an attached accessory or peripheral has been identified.

摘要翻译： 提供了利用硬件音频CODEC来检测和识别电子附件或外围设备的方法和系统的方面。 在这方面，硬件音频编解码器可以用于将附件或外围端口的一个或多个偏置引脚上的一个或多个电压与一个或多个参考电压进行比较，并且生成一个或多个电压的一个或多个数字表示 偏置一个或多个引脚。 可以基于比较和/或所生成的一个或多个数字表示来识别附接到附件或外围端口的附件或外围设备。 可以基于比较的结果和/或所生成的数字表示来控制一个或多个偏置电压。 在附加附件或外围设备被识别之后，可以减小一个或多个偏置电压。

公开(公告)号：US20100117685A1

公开(公告)日：2010-05-13

申请号：US12268305

申请日：2008-11-10

申请人： Hongwei Kong ,  Nelson Sollenberger ,  Todd L. Brooks ,  Yee Ling Cheung ,  Xicheng Jiang

发明人： Hongwei Kong ,  Nelson Sollenberger ,  Todd L. Brooks ,  Yee Ling Cheung ,  Xicheng Jiang

IPC分类号： H03K5/22

CPC分类号： G06F13/4072

摘要： Aspects of a method and system for detecting and identifying electronic accessories or peripherals utilizing a hardware audio CODEC are provided. In this regard, a hardware audio CODEC may be operable to compare one or more voltages on one or more biased pins of an accessory or peripheral port to one or more reference voltages and generate one or more digital representations of the one or more voltages on the biased one or more pins. An accessory or peripheral attached to the accessory or peripheral port may be identified based on the comparison and/or the generated one or more digital representations. The one or more bias voltages may be controlled based on a result of the comparison and/or the generated digital representations. The one or more bias voltages may be reduced after an attached accessory or peripheral has been identified.

摘要翻译： 提供了利用硬件音频CODEC来检测和识别电子附件或外围设备的方法和系统的方面。 在这方面，硬件音频编解码器可以用于将附件或外围端口的一个或多个偏置引脚上的一个或多个电压与一个或多个参考电压进行比较，并且生成一个或多个电压的一个或多个数字表示 偏置一个或多个引脚。 可以基于比较和/或所生成的一个或多个数字表示来识别附接到附件或外围端口的附件或外围设备。 可以基于比较的结果和/或所生成的数字表示来控制一个或多个偏置电压。 在附加附件或外围设备被识别之后，可以减小一个或多个偏置电压。

公开(公告)号：US20100057471A1

公开(公告)日：2010-03-04

申请号：US12248426

申请日：2008-10-09

申请人： Hongwei Kong ,  Nelson Sollenberger ,  Taiyi Cheng ,  Mark Hahm ,  Todd L. Brooks ,  Xicheng Jiang

发明人： Hongwei Kong ,  Nelson Sollenberger ,  Taiyi Cheng ,  Mark Hahm ,  Todd L. Brooks ,  Xicheng Jiang

IPC分类号： G10L19/00

CPC分类号： H04M1/6025 ,  H04R1/1091 ,  H04R25/554 ,  H04R27/00 ,  H04R2227/003 ,  H04R2420/07

摘要： Aspects of a method and system for processing audio signals via separate input and output processing paths are provided. In this regard, a hardware audio CODEC comprising one or more audio inputs and one or more audio outputs and may be enabled to route, via one or more switching elements, audio signals from any of the inputs to any of the outputs. The CODEC may be enabled to simultaneously process a plurality of audio signals based on a configuration of the switching elements. Upstream from the switching elements, received audio signals may be processed independent of an output to which the may be communicated. Downstream from said switching elements audio signals may be processed independent of an input via which the signals were received.

摘要翻译： 提供了通过单独的输入和输出处理路径处理音频信号的方法和系统的方面。 在这方面，包括一个或多个音频输入和一个或多个音频输出的硬件音频编解码器，并且可以使得能够经由一个或多个开关元件将来自任何输入的音频信号路由到任何输出。 可以使CODEC可以基于开关元件的配置来同时处理多个音频信号。 从开关元件的上游，接收的音频信号可以独立于可以被传送到的输出进行处理。 来自所述开关元件的下游音频信号可以独立于接收信号的输入进行处理。

公开(公告)号：US20080130913A1

公开(公告)日：2008-06-05

申请号：US11565576

申请日：2006-11-30

申请人： Hongwei Kong ,  Nelson Sollenberger ,  Li Fung Chang ,  Andy Tong ,  Todd L. Brooks ,  Claude Hayek

发明人： Hongwei Kong ,  Nelson Sollenberger ,  Li Fung Chang ,  Andy Tong ,  Todd L. Brooks ,  Claude Hayek

IPC分类号： H04R3/00

CPC分类号： H04R5/04 ,  H04R2420/01 ,  H04R2420/07 ,  H04R2499/11

摘要： Methods and systems for detecting, and controlling power for, an auxiliary microphone are disclosed. Aspects of one method may include a detection block intermittently enabling a bias circuit block to provide a bias signal to determine if an auxiliary microphone may be communicatively coupled to a mobile device. The detection block may process 1-bit digital samples received from the bias circuit bock to determine whether the auxiliary microphone may be communicatively coupled. The detection block may also process the 1-bit digital samples to determine if a button associated with the auxiliary microphone may have been pushed or activated.

摘要翻译： 公开了用于检测和控制辅助麦克风的功率的方法和系统。 一种方法的方面可以包括间歇地使得偏置电路块提供偏置信号以确定辅助麦克风是否可通信地耦合到移动设备的检测块。 检测块可以处理从偏置电路块接收的1位数字样本，以确定辅助麦克风是否可以通信耦合。 检测块还可以处理1位数字样本，以确定与辅助麦克风相关联的按钮是否可能被推动或激活。

公开(公告)号：US08103022B2

公开(公告)日：2012-01-24

申请号：US11565576

申请日：2006-11-30

申请人： Hongwei Kong ,  Nelson Sollenberger ,  Li Fung Chang ,  Andy Tong ,  Todd L. Brooks ,  Claude Hayek

发明人： Hongwei Kong ,  Nelson Sollenberger ,  Li Fung Chang ,  Andy Tong ,  Todd L. Brooks ,  Claude Hayek

IPC分类号： H04R3/00 ,  H04B1/38

CPC分类号： H04R5/04 ,  H04R2420/01 ,  H04R2420/07 ,  H04R2499/11

摘要： Methods and systems for detecting, and controlling power for, an auxiliary microphone are disclosed. Aspects of one method may include a detection block intermittently enabling a bias circuit block to provide a bias signal to determine if an auxiliary microphone may be communicatively coupled to a mobile device. The detection block may process 1-bit digital samples received from the bias circuit bock to determine whether the auxiliary microphone may be communicatively coupled. The detection block may also process the 1-bit digital samples to determine if a button associated with the auxiliary microphone may have been pushed or activated.

摘要翻译： 公开了用于检测和控制辅助麦克风的功率的方法和系统。 一种方法的方面可以包括间歇地使得偏置电路块提供偏置信号以确定辅助麦克风是否可通信地耦合到移动设备的检测块。 检测块可以处理从偏置电路块接收的1位数字样本，以确定辅助麦克风是否可以通信耦合。 检测块还可以处理1位数字样本，以确定与辅助麦克风相关联的按钮是否可能被推动或激活。

公开(公告)号：US08212612B2

公开(公告)日：2012-07-03

申请号：US12804318

申请日：2010-07-19

申请人： Jungwoo Song ,  Xicheng Jiang ,  Minsheng Wang ,  Todd L. Brooks

发明人： Jungwoo Song ,  Xicheng Jiang ,  Minsheng Wang ,  Todd L. Brooks

IPC分类号： H03F3/38 ,  H03F3/217

CPC分类号： H03F3/217

摘要： Disclosed is a closed-loop class-D amplifier circuit including a modulated reference signal generator that provides a modulated reference signal in a feed-forward path, where the reference signal is modulated corresponding to an input signal. The closed-loop class-D amplifier circuit further includes a comparator to generate a control signal based on a comparison of the modulated reference signal and a correction signal, which in turn is produced by filtering a combination of the input signal and a feedback signal. The closed-loop class-D amplifier circuit also includes a pulse generator to generate a pulse-width-modulated signal to drive an output stage of the closed-loop class-D amplifier based on the control signal.

摘要翻译： 公开了一种闭环D类放大器电路，其包括在前馈路径中提供调制参考信号的调制参考信号发生器，其中参考信号根据输入信号被调制。 闭环D类放大器电路还包括比较器，用于基于调制参考信号和校正信号的比较产生控制信号，校正信号又通过滤波输入信号和反馈信号的组合来产生。 闭环D类放大器电路还包括脉冲发生器，以产生脉冲宽度调制信号，以根据控制信号驱动闭环D类放大器的输出级。

公开(公告)号：US20120025910A1

公开(公告)日：2012-02-02

申请号：US12804834

申请日：2010-07-29

申请人： Xicheng Jiang ,  Jungwoo Song ,  Minsheng Wang ,  Todd L. Brooks

发明人： Xicheng Jiang ,  Jungwoo Song ,  Minsheng Wang ,  Todd L. Brooks

IPC分类号： H03F3/217

CPC分类号： H03F3/217

摘要： Disclosed is a switching amplifier having an enhanced supply rejection. The switching amplifier comprises a digital modulator that provides a modulated signal. The switching amplifier further comprises a closed-loop analog driver that is coupled to the digital modulator. As disclosed, the closed-loop analog driver is configured to re-modulate a modulation signal that corresponds to the modulated signal. An output stage of the switching amplifier is driven by the re-modulated signal, thereby providing enhanced supply rejection. In one embodiment, the modulated signal is produced by a digital pulse-width modulator (PWM) circuit of a Class-D amplifier, and has a pulse rate substantially less than a clock rate of the digital PWM circuit. In one embodiment, the switching amplifier is implemented as an audio amplifier in a mobile communication device such as a cellular telephone.

公开(公告)号：US20120013402A1

公开(公告)日：2012-01-19

申请号：US12804318

申请日：2010-07-19

申请人： Jungwoo Song ,  Xicheng Jiang ,  Minsheng Wang ,  Todd L. Brooks

发明人： Jungwoo Song ,  Xicheng Jiang ,  Minsheng Wang ,  Todd L. Brooks

IPC分类号： H03F1/00

CPC分类号： H03F3/217

摘要： Disclosed is a closed-loop class-D amplifier circuit including a modulated reference signal generator that provides a modulated reference signal in a feed-forward path, where the reference signal is modulated corresponding to an input signal. The closed-loop class-D amplifier circuit further includes a comparator to generate a control signal based on a comparison of the modulated reference signal and a correction signal, which in turn is produced by filtering a combination of the input signal and a feedback signal. The closed-loop class-D amplifier circuit also includes a pulse generator to generate a pulse-width-modulated signal to drive an output stage of the closed-loop class-D amplifier based on the control signal.

摘要翻译： 公开了一种闭环D类放大器电路，其包括在前馈路径中提供调制参考信号的调制参考信号发生器，其中参考信号根据输入信号被调制。 闭环D类放大器电路还包括比较器，用于基于调制参考信号和校正信号的比较产生控制信号，校正信号又通过滤波输入信号和反馈信号的组合来产生。 闭环D类放大器电路还包括脉冲发生器，以产生脉冲宽度调制信号，以根据控制信号驱动闭环D类放大器的输出级。

公开(公告)号：US08237496B2

公开(公告)日：2012-08-07

申请号：US12804834

申请日：2010-07-29

申请人： Xicheng Jiang ,  Jungwoo Song ,  Minsheng Wang ,  Todd L. Brooks

发明人： Xicheng Jiang ,  Jungwoo Song ,  Minsheng Wang ,  Todd L. Brooks

IPC分类号： H03F3/38

CPC分类号： H03F3/217

摘要： Disclosed is a switching amplifier having an enhanced supply rejection. The switching amplifier comprises a digital modulator that provides a modulated signal. The switching amplifier further comprises a closed-loop analog driver that is coupled to the digital modulator. As disclosed, the closed-loop analog driver is configured to re-modulate a modulation signal that corresponds to the modulated signal. An output stage of the switching amplifier is driven by the re-modulated signal, thereby providing enhanced supply rejection. In one embodiment, the modulated signal is produced by a digital pulse-width modulator (PWM) circuit of a Class-D amplifier, and has a pulse rate substantially less than a clock rate of the digital PWM circuit. In one embodiment, the switching amplifier is implemented as an audio amplifier in a mobile communication device such as a cellular telephone.

摘要翻译： 公开了具有增强的电源抑制的开关放大器。 开关放大器包括提供调制信号的数字调制器。 开关放大器还包括耦合到数字调制器的闭环模拟驱动器。 如所公开的，闭环模拟驱动器被配置为重新调制对应于调制信号的调制信号。 开关放大器的输出级由再调制信号驱动，从而提供增强的电源抑制。 在一个实施例中，调制信号由D类放大器的数字脉冲宽度调制器（PWM）电路产生，并且具有基本上小于数字PWM电路的时钟速率的脉冲速率。 在一个实施例中，开关放大器被实现为诸如蜂窝电话的移动通信设备中的音频放大器。

公开(公告)号：US20080144846A1

公开(公告)日：2008-06-19

申请号：US11641552

申请日：2006-12-18

申请人： Nelson R. Sollenberger ,  Hongwei Kong ,  Andy Ye Tong ,  Todd L. Brooks

发明人： Nelson R. Sollenberger ,  Hongwei Kong ,  Andy Ye Tong ,  Todd L. Brooks

IPC分类号： H04R29/00

CPC分类号： H04R29/00

摘要： A circuit for detecting when a microphone is connected to a microphone coupling includes a detection signal generator that asserts a microphone detection signal. A microphone power module supplies a microphone current to the microphone coupling in response to the assertion of the microphone detection signal. A microphone detection module detects when the microphone is not connected to the microphone coupling based on an impedance of the microphone coupling, wherein the microphone power module disconnects the microphone current from the microphone coupling when the microphone is not connected to the microphone coupling. In an embodiment, the circuit further detects when a microphone button is depressed.

摘要翻译： 用于检测麦克风何时连接到麦克风耦合的电路包括断言麦克风检测信号的检测信号发生器。 麦克风电源模块响应于麦克风检测信号的断言向麦克风耦合提供麦克风电流。 麦克风检测模块基于麦克风耦合的阻抗来检测麦克风何时未连接到麦克风耦合，其中当麦克风未连接到麦克风耦合器时，麦克风功率模块将麦克风电流与麦克风耦合断开。 在一个实施例中，电路还检测何时按下麦克风按钮。