专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 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。

2. 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。

3. 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。

4. 发明授权

US08212612B2 Closed-loop class-D amplifier with modulated reference signal and related method 有权
标题翻译：具有调制参考信号的闭环D类放大器及相关方法
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。

5. 发明申请

US20120025910A1 Switching amplifier with enhanced supply rejection and related method 失效
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.

6. 发明申请

US20120013402A1 Closed-loop class-d amplifier with modulated reference signal and related method 有权
标题翻译：具有调制参考信号的闭环D类放大器及相关方法
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。

7. 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。

8. 发明授权

US08472512B2 Methods and systems for adaptive receiver equalization 有权
标题翻译：自适应接收机均衡的方法和系统
公开(公告)号：US08472512B2
公开(公告)日：2013-06-25
申请号：US13467531
申请日：2012-05-09
申请人： Aaron Buchwald , Xicheng Jiang , Hui Wang , Howard A. Baumer , Avanindra Madisetti
发明人： Aaron Buchwald , Xicheng Jiang , Hui Wang , Howard A. Baumer , Avanindra Madisetti
IPC分类号： H03H7/30
CPC分类号： H04L25/03885 , H03L7/07 , H03L7/0814 , H03L7/091 , H04L7/0025 , H04L7/0274 , H04L7/0337 , H04L25/03006 , H04L2025/03477 , H04L2025/03617
摘要： Methods and systems for adaptively equalizing an analog information signal for a signal path, including sampling the analog information signal, thereby generating analog samples, and performing an equalizing process on the analog samples, wherein the equalizing includes processing an average of post-transition sample amplitudes and an average of steady state sample amplitudes of the analog samples to produce equalized analog samples.
摘要翻译：用于自适应地均衡用于信号路径的模拟信息信号的方法和系统，包括对模拟信息信号进行采样，从而产生模拟采样，并对模拟采样进行均衡处理，其中均衡包括处理平均过渡后样本幅度以及模拟样本的稳态样本幅度的平均值，以产生均衡的模拟样本。

9. 发明申请

US20120243598A1 Methods and Systems for Adaptive Receiver Equalization 有权
标题翻译：自适应接收机均衡的方法和系统
公开(公告)号：US20120243598A1
公开(公告)日：2012-09-27
申请号：US13467531
申请日：2012-05-09
申请人： Aaron Buchwald , Xicheng Jiang , Hui Wang , Howard A. Baumer , Avanindra Madisetti
发明人： Aaron Buchwald , Xicheng Jiang , Hui Wang , Howard A. Baumer , Avanindra Madisetti
IPC分类号： H03H7/00
CPC分类号： H04L25/03885 , H03L7/07 , H03L7/0814 , H03L7/091 , H04L7/0025 , H04L7/0274 , H04L7/0337 , H04L25/03006 , H04L2025/03477 , H04L2025/03617
摘要： Methods and systems for adaptively equalizing an analog information signal for a signal path, including sampling the analog information signal, thereby generating analog samples, and performing an equalizing process on the analog samples, wherein the equalizing includes processing an average of post-transition sample amplitudes and an average of steady state sample amplitudes of the analog samples to produce equalized analog samples.
摘要翻译：用于自适应地均衡用于信号路径的模拟信息信号的方法和系统，包括对模拟信息信号进行采样，从而产生模拟采样，并对模拟采样进行均衡处理，其中均衡包括处理平均过渡后样本幅度以及模拟样本的稳态样本幅度的平均值，以产生均衡的模拟样本。

10. 发明申请

US20120008240A1 High efficiency amplifier with reduced electromagnetic interference 失效
标题翻译：具有降低电磁干扰的高效放大器
公开(公告)号：US20120008240A1
公开(公告)日：2012-01-12
申请号：US12803869
申请日：2010-07-07
申请人： Xicheng Jiang , Jianlong Chen
发明人： Xicheng Jiang , Jianlong Chen
IPC分类号： H02H9/00
CPC分类号： H03F3/2173 , H03F2200/114 , H03F2200/498 , H03K17/163
摘要： Disclosed is a high efficiency amplifier operable to substantially reduce electromagnetic interference (EMI). The high efficiency amplifier comprises an output stage to provide a high powered signal to a load. The high efficiency amplifier further comprises an overlap protection circuit to produce a timing non-overlap in a control signal for the output stage, and an edge control circuit to reduce a transient portion of the high powered signal to substantially reduce the EMI. The overlap protection circuit and the edge control circuit may be implemented with resistive source degeneration. Also disclosed is a related method. In one embodiment, the high efficiency amplifier and the related method may be incorporated into a cellular telephone or a mobile audio device.
摘要翻译：公开了一种高效率放大器，可操作以显着降低电磁干扰（EMI）。高效率放大器包括用于向负载提供高功率信号的输出级。高效率放大器还包括重叠保护电路，用于在用于输出级的控制信号中产生定时不重叠，以及边缘控制电路，以减少高功率信号的瞬态部分，以显着降低EMI。重叠保护电路和边缘控制电路可以用电阻源退化来实现。还公开了相关方法。在一个实施例中，高效率放大器和相关方法可以被并入到蜂窝电话或移动音频设备中。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式