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1. 发明申请

US20080144846A1 Circuit for detecting when a microphone is connected and method for use therewith 审中-公开
标题翻译：用于检测麦克风何时连接的电路及其使用方法
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。

2. 发明申请

US20080130913A1 Method and System for Detecting, and Controlling Power for, an Auxiliary Microphone 有权
标题翻译：用于辅助麦克风的检测和控制功率的方法和系统
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。

3. 发明申请

US20100117685A1 Method and System for Detecting and Identifying Electronic Accessories or Peripherals 有权
标题翻译：检测和识别电子附件或外围设备的方法和系统
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。

4. 发明授权

US08452428B2 Method and system for detecting and identifying electronic accessories or peripherals 有权
标题翻译：用于检测和识别电子配件或外围设备的方法和系统
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。

5. 发明授权

US08103022B2 Method and system for detecting, and controlling power for, an auxiliary microphone 有权
标题翻译：用于检测和控制辅助麦克风的电源的方法和系统
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。

6. 发明申请

US20100057471A1 METHOD AND SYSTEM FOR PROCESSING AUDIO SIGNALS VIA SEPARATE INPUT AND OUTPUT PROCESSING PATHS 审中-公开
标题翻译：通过分离输入和输出处理程序处理音频信号的方法和系统
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。

7. 发明授权

US08829979B2 Power-efficient multi-mode charge pump 有权
标题翻译：高效多模充电泵
公开(公告)号：US08829979B2
公开(公告)日：2014-09-09
申请号：US12807610
申请日：2010-09-08
申请人： Sherif Galal , Tay Hui Zheng , Todd L. Brooks
发明人： Sherif Galal , Tay Hui Zheng , Todd L. Brooks
IPC分类号： G05F1/10 , G05F3/02
CPC分类号： H02M3/07
摘要： Disclosed is a power-efficient multi-mode charge pump. The charge pump comprises a first pumping circuit that provides at least one output voltage produced by a discharge sequence of a shared flyback capacitor. The charge pump also comprises a second pumping circuit that provides a plurality of output voltages produced by a corresponding plurality of discharge sequences of the shared flyback capacitor. The charge pump may include a transition circuit to selectably enable the first pumping circuit or the second pumping circuit. In one embodiment, the first pumping circuit may employ a two-phase discharge sequence. In another embodiment, the second pumping circuit may employ a three-phase plurality of discharge sequences. A related method is also disclosed.
摘要翻译：公开了一种功率高效的多模式电荷泵。电荷泵包括提供由共享回扫电容器的放电序列产生的至少一个输出电压的第一泵浦电路。电荷泵还包括第二泵浦电路，其提供由共享回扫电容器的相应多个放电序列产生的多个输出电压。电荷泵可以包括可选择地使第一泵送电路或第二泵浦电路的转换电路。在一个实施例中，第一泵浦电路可采用两相放电序列。在另一个实施例中，第二泵浦电路可以采用三相多个放电序列。还公开了相关方法。

8. 发明授权

US08294518B2 Class-AB/B amplifier and quiescent control circuit for implementation with same 失效
标题翻译： AB类放大器和静态控制电路用于实现
公开(公告)号：US08294518B2
公开(公告)日：2012-10-23
申请号：US12807403
申请日：2010-09-03
申请人： Sherif Galal , Alex Jianzhong Chen , Khaled Abdelfattah , Todd L. Brooks
发明人： Sherif Galal , Alex Jianzhong Chen , Khaled Abdelfattah , Todd L. Brooks
IPC分类号： H03F3/26
CPC分类号： H03F3/211 , H03F1/301 , H03F3/3022 , H03F2200/375 , H03F2200/453 , H03F2203/30015
摘要： Disclosed is a Class-AB/B amplifier comprising a first output stage including a first plurality of amplification devices and a second output stage including a second plurality of amplification devices. According to one embodiment, the first output stage operates when the Class-AB/B amplifier is in a quiescent state and the second output stage operates when the Class-AB/B amplifier is in an active state. The Class-AB/B amplifier also comprises a level shifting circuit that adjusts a control voltage of the second output stage, where the level shifting circuit is adapted to activate the second output stage when the Class-AB/B amplifier enters the active state. Embodiments of the Class-AB/B amplifier may include a level shifting circuit that implements either a fixed or signal-dependent level shift, and a quiescent control circuit that substantially eliminates any systematic offset arising from the active feedback circuit inside the replica bias circuit.
摘要翻译：公开了一种AB-B类放大器，其包括包括第一多个放大装置的第一输出级和包括第二多个放大装置的第二输出级。根据一个实施例，当AB类/ B放大器处于静态时，第一输出级工作，而当AB类/ B放大器处于活动状态时，第二输出级工作。 AB类/ B放大器还包括一个电平移动电路，其调节第二输出级的控制电压，其中当AB类/ B放大器进入激活状态时，电平移位电路用于激活第二输出级。 AB类/ B放大器的实施例可以包括实现固定或信号相关电平移位的电平移位电路和基本上消除由复制偏置电路内部的有源反馈电路产生的任何系统偏移的静态控制电路。

9. 发明授权

US08237496B2 Switching amplifier with enhanced supply rejection and related method 失效
标题翻译：开关放大器具有增强的电源抑制和相关方法
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。

10. 发明申请

US20110204961A1 Power-efficient multi-mode charge pump 有权
标题翻译：高效多模充电泵
公开(公告)号：US20110204961A1
公开(公告)日：2011-08-25
申请号：US12807610
申请日：2010-09-08
申请人： Sherif Galal , Tay Hui Zheng , Todd L. Brooks
发明人： Sherif Galal , Tay Hui Zheng , Todd L. Brooks
IPC分类号： G05F1/10
CPC分类号： H02M3/07
摘要： Disclosed is a power-efficient multi-mode charge pump. The charge pump comprises a first pumping circuit that provides at least one output voltage produced by a discharge sequence of a shared flyback capacitor. The charge pump also comprises a second pumping circuit that provides a plurality of output voltages produced by a corresponding plurality of discharge sequences of the shared flyback capacitor. The charge pump may include a transition circuit to selectably enable the first pumping circuit or the second pumping circuit. In one embodiment, the first pumping circuit may employ a two-phase discharge sequence. In another embodiment, the second pumping circuit may employ a three-phase plurality of discharge sequences. A related method is also disclosed.
摘要翻译：公开了一种功率高效的多模式电荷泵。电荷泵包括提供由共享回扫电容器的放电序列产生的至少一个输出电压的第一泵浦电路。电荷泵还包括第二泵浦电路，其提供由共享回扫电容器的相应多个放电序列产生的多个输出电压。电荷泵可以包括可选择地使第一泵送电路或第二泵浦电路的转换电路。在一个实施例中，第一泵浦电路可采用两相放电序列。在另一个实施例中，第二泵浦电路可以采用三相多个放电序列。还公开了相关方法。

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