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公开(公告)号：US08214543B2
公开(公告)日：2012-07-03
申请号：US13218305
申请日：2011-08-25
IPC分类号： G06F3/00
摘要： Systems and methods for controlling the capabilities of an High Definition Audio (HDA) system, wherein the system determines whether an optional component such as a plug-in card is connected to the system and then configures itself in a baseline configuration if the optional component is not connected or configures itself in a different, alternative configuration if the optional component is connected. In one embodiment, a codec of the system includes a programmable processor configured to read configuration authorization information and also read configuration information from the optional component if it is connected to the system. The processor also controls the configuration of the HDA system and the operation of the codec based on the authorization and configuration information. The system can thereby provide different features and functionality using the same hardware.
摘要翻译： 用于控制高清晰度音频（HDA）系统的能力的系统和方法，其中系统确定诸如插件卡的可选组件是否连接到系统，然后如果可选组件是 如果可选组件连接，则不连接或将其自身配置为不同的替代配置。 在一个实施例中，系统的编解码器包括可编程处理器，其被配置为读取配置授权信息，并且如果连接到系统则从可选组件读取配置信息。 处理器还根据授权和配置信息控制HDA系统的配置和编解码器的操作。 因此，该系统可以使用相同的硬件来提供不同的特征和功能。
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公开(公告)号：US20110305354A1
公开(公告)日：2011-12-15
申请号：US13218305
申请日：2011-08-25
IPC分类号： H03F99/00
摘要： Systems and methods for controlling the capabilities of an High Definition Audio (HDA) system, wherein the system determines whether an optional component such as a plug-in card is connected to the system and then configures itself in a baseline configuration if the optional component is not connected or configures itself in a different, alternative configuration if the optional component is connected. In one embodiment, a codec of the system includes a programmable processor configured to read configuration authorization information and also read configuration information from the optional component if it is connected to the system. The processor also controls the configuration of the HDA system and the operation of the codec based on the authorization and configuration information. The system can thereby provide different features and functionality using the same hardware.
摘要翻译： 用于控制高清晰度音频（HDA）系统的能力的系统和方法，其中系统确定诸如插件卡的可选组件是否连接到系统，然后如果可选组件是 如果可选组件连接，则不连接或将其自身配置为不同的替代配置。 在一个实施例中，系统的编解码器包括可编程处理器，其被配置为读取配置授权信息，并且如果连接到系统则从可选组件读取配置信息。 处理器还根据授权和配置信息控制HDA系统的配置和编解码器的操作。 因此，该系统可以使用相同的硬件来提供不同的特征和功能。
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公开(公告)号：US08028101B2
公开(公告)日：2011-09-27
申请号：US12202361
申请日：2008-09-01
IPC分类号： G06F3/00
摘要： Systems and methods for controlling the capabilities of an High Definition Audio (HDA) system, wherein the system determines whether an optional component such as a plug-in card is connected to the system and then configures itself in a baseline configuration if the optional component is not connected or configures itself in a different, alternative configuration if the optional component is connected. In one embodiment, a codec of the system includes a programmable processor configured to read configuration authorization information and also read configuration information from the optional component if it is connected to the system. The processor also controls the configuration of the HDA system and the operation of the codec based on the authorization and configuration information. The system can thereby provide different features and functionality using the same hardware.
摘要翻译： 用于控制高清晰度音频（HDA）系统的能力的系统和方法，其中系统确定诸如插件卡的可选组件是否连接到系统，然后如果可选组件是 如果可选组件连接，则不连接或将其自身配置为不同的替代配置。 在一个实施例中，系统的编解码器包括可编程处理器，其被配置为读取配置授权信息，并且如果连接到系统则从可选组件读取配置信息。 处理器还根据授权和配置信息控制HDA系统的配置和编解码器的操作。 因此，该系统可以使用相同的硬件来提供不同的特征和功能。
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公开(公告)号：US20090063720A1
公开(公告)日：2009-03-05
申请号：US12202361
申请日：2008-09-01
摘要： Systems and methods for controlling the capabilities of an High Definition Audio (HDA) system, wherein the system determines whether an optional component such as a plug-in card is connected to the system and then configures itself in a baseline configuration if the optional component is not connected or configures itself in a different, alternative configuration if the optional component is connected. In one embodiment, a codec of the system includes a programmable processor configured to read configuration authorization information and also read configuration information from the optional component if it is connected to the system. The processor also controls the configuration of the HDA system and the operation of the codec based on the authorization and configuration information. The system can thereby provide different features and functionality using the same hardware.
摘要翻译： 用于控制高清晰度音频（HDA）系统的能力的系统和方法，其中系统确定诸如插件卡的可选组件是否连接到系统，然后如果可选组件是 如果可选组件连接，则不连接或将其自身配置为不同的替代配置。 在一个实施例中，系统的编解码器包括可编程处理器，其被配置为读取配置授权信息，并且如果连接到系统则从可选组件读取配置信息。 处理器还根据授权和配置信息控制HDA系统的配置和编解码器的操作。 因此，该系统可以使用相同的硬件来提供不同的特征和功能。
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公开(公告)号：US07576606B2
公开(公告)日：2009-08-18
申请号：US11782708
申请日：2007-07-25
申请人： Jack B. Andersen , Peter Craven , Michael A. Kost , Daniel L. W. Chieng , Larry E. Hand , Wilson E. Taylor
发明人： Jack B. Andersen , Peter Craven , Michael A. Kost , Daniel L. W. Chieng , Larry E. Hand , Wilson E. Taylor
IPC分类号： H03F3/38
CPC分类号： H03F3/217
摘要： Systems and methods for performance improvements in digital switching amplifiers using a low delay corrector. In one embodiment, a digital pulse width modulation (PWM) amplifier includes a signal processing plant configured to receive and process an input audio signal. The amplifier also includes a low delay corrector configured to receive signals output by the plant. The output of the low delay corrector is added to the input audio signal as feedback. The plant may consist of a modulator and power switch, a noise shaper, or any other type of plant. An analog-to-digital converter (ADC) may be provided to convert the output audio signal to a digital signal. Filtering may be implemented before or after the ADC, and a decimator may be placed after the ADC if it is an oversampling ADC.
摘要翻译： 使用低延迟校正器的数字开关放大器性能改进的系统和方法。 在一个实施例中，数字脉宽调制（PWM）放大器包括被配置为接收和处理输入音频信号的信号处理设备。 放大器还包括低延迟校正器，其被配置为接收由工厂输出的信号。 低延迟校正器的输出作为反馈被添加到输入音频信号。 该设备可以由调制器和电源开关，噪声整形器或任何其它类型的设备组成。 可以提供模数转换器（ADC）以将输出音频信号转换为数字信号。 可以在ADC之前或之后实现滤波，如果ADC是过采样ADC，则可以在ADC之后放置抽取器。
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公开(公告)号：US20090027117A1
公开(公告)日：2009-01-29
申请号：US11782702
申请日：2007-07-25
申请人： Jack B. Andersen , Peter Craven , Michael A. Kost , Daniel L.W. Chieng , Larry E. Hand , Wilson E. Taylor
发明人： Jack B. Andersen , Peter Craven , Michael A. Kost , Daniel L.W. Chieng , Larry E. Hand , Wilson E. Taylor
IPC分类号： H03F3/38
CPC分类号： H03F1/3258 , H03F1/26 , H03F1/3241 , H03F3/217
摘要： Systems and methods for performance improvements in digital switching amplifiers using low-pass filtering to reduce noise and distortion. In one embodiment, a digital pulse width modulation (PWM) amplifier includes a signal processing plant configured to receive and process an input audio signal. The amplifier also includes a low-pass filter configured to filter audio signals output by the plant. The filtered output of the plant is added to the input audio signal as feedback. The plant may consist of a modulator and power switch, a noise shaper, or any other type of plant. An analog-to-digital converter (ADC) may be provided to convert the output audio signal to a digital signal. Filtering may be implemented before or after the ADC, and a decimator may be placed after the ADC if it is an oversampling ADC.
摘要翻译： 使用低通滤波技术降低噪声和失真的数字开关放大器性能改进的系统和方法。 在一个实施例中，数字脉宽调制（PWM）放大器包括被配置为接收和处理输入音频信号的信号处理设备。 放大器还包括一个低通滤波器，用于滤除工厂输出的音频信号。 工厂的滤波输出作为反馈被添加到输入音频信号。 该设备可以由调制器和电源开关，噪声整形器或任何其它类型的设备组成。 可以提供模数转换器（ADC）以将输出音频信号转换为数字信号。 可以在ADC之前或之后实现滤波，如果ADC是过采样ADC，则可以在ADC之后放置抽取器。
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公开(公告)号：US07729790B1
公开(公告)日：2010-06-01
申请号：US10805590
申请日：2004-03-19
摘要： Systems and methods for ensuring proper phase alignment of audio signals which are processed by separate hardware channels in an audio amplification system. In one embodiment, the phase alignment is controlled by determining the number of audio data samples which are stored in the input buffers of multiple audio amplification units and controlling reads from the input buffers to minimize the difference between an actual read-write pointer differential and a target differential. In a master unit, the target differential is a predetermined target value corresponding to a desired delay in the buffer. The actual pointer differential of the master unit is passed to one or more slave units. The actual pointer differential of the master unit is used as the target differential of the slave units. The pointer differentials of the slave units are thereby driven to track the pointer differential of the master unit, keeping the units synchronized.
摘要翻译： 用于确保音频信号的适当相位对准的系统和方法，其由音频放大系统中的分开的硬件通道处理。 在一个实施例中，通过确定存储在多个音频放大单元的输入缓冲器中的音频数据样本的数量来控制相位对准，并且控制来自输入缓冲器的读取以最小化实际读写指针差和 目标差异。 在主单元中，目标差分是与缓冲器中期望的延迟对应的预定目标值。 主单元的实际指针差分传递给一个或多个从单元。 主单元的实际指针差异用作从单元的目标差。 因此，从属单元的指针差异被驱动以跟踪主单元的指针差，保持单元同步。
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公开(公告)号：US20090128237A1
公开(公告)日：2009-05-21
申请号：US12270692
申请日：2008-11-13
IPC分类号： H03F3/217
CPC分类号： H03F3/217 , H03F3/2173 , H03F2200/03 , H03F2200/271 , H03F2200/273
摘要： Systems and methods implemented in a switching amplifier for providing consistent, matching switching between top and bottom switching devices in a switching amplifier. One embodiment includes a half-bridge circuit output stage, a driver stage and a transformer. The driver stage, which drives the switches of the output stage, is very fast, has a low propagation delay, and has minimal input capacitance. The transformer drives the drive paths from the transformer inputs to the switches. The transformer avoids resonances within the audio band and at the amplifier switching frequencies, has low and spread free leakage inductance, has enough magnetizing inductance to keep transformer currents low in proportion to the total driver stage current drain, has low core losses at the switching frequency, has minimal inductance change and operates well below its saturation point. The amplifier stage provides a substantially constant amplitude drive signal to the output power switching devices.
摘要翻译： 在开关放大器中实现的系统和方法，用于在开关放大器中的顶部和底部开关器件之间提供一致的匹配切换。 一个实施例包括半桥电路输出级，驱动级和变压器。 驱动输出级开关的驱动级非常快，传播延迟低，输入电容最小。 变压器驱动变压器输入到开关的驱动路径。 变压器避免了音频频带内的谐振，在放大器开关频率下，具有低和无扩展的漏电感，具有足够的磁化电感，以保持变压器电流与总驱动级电流消耗成比例的低电平，开关频率具有较低的磁芯损耗 ，具有最小的电感变化，并且运行在其饱和点以下。 放大器级向输出功率开关器件提供基本恒定的振幅驱动信号。
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公开(公告)号：US07286009B2
公开(公告)日：2007-10-23
申请号：US11324132
申请日：2005-12-30
申请人： Jack B. Andersen , Peter Craven , Michael A. Kost , Daniel L. W. Chieng , Larry E. Hand , Wilson E. Taylor
发明人： Jack B. Andersen , Peter Craven , Michael A. Kost , Daniel L. W. Chieng , Larry E. Hand , Wilson E. Taylor
IPC分类号： H03F3/68
CPC分类号： H03F3/217 , H03F1/32 , H03F2200/331
摘要： Systems and methods for performance improvements in digital switching amplifiers using simulation-based feedback. In one embodiment, a digital pulse width modulation (PWM) amplifier includes a signal processing plant configured to receive and process an input audio signal. The amplifier also includes a simulator configured to model processing of audio signals by the plant. The outputs of the plant and the simulator are provided to a subtractor, the output of which is then added to the input audio signal as feedback. The plant may consist of a modulator and power switch, a noise shaper, or any other type of plant. An analog-to-digital converter (ADC) may be provided to convert the output audio signal to a digital signal for input to the subtractor. Filtering may be implemented before or after the ADC, and a decimator may be placed after the ADC if it is an oversampling ADC.
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10.再颁专利公开(公告)号：USRE43461E1
公开(公告)日：2012-06-12
申请号：US12544806
申请日：2009-08-20
申请人： Larry E. Hand , Wilson E. Taylor
发明人： Larry E. Hand , Wilson E. Taylor
CPC分类号： H03F3/2173 , H03F1/523 , H03F3/2175 , H03F2200/331 , H03F2200/426
摘要： Systems and methods for detecting the impedance of an output load coupled to a digital amplifier and compensating for changes in the response of the amplifier. One embodiment of the invention is implemented in a Class D pulse width modulated (PWM) amplifier. In this embodiment, a digital PCM test signal is generated. This test signal is processed by the amplifier to produce a corresponding analog audio output signal that is used to drive a speaker. A sense resistor placed in series with the speaker is used to generate a test voltage that is compared to a reference voltage. When the test voltage reaches the reference voltage, the current through the sense resistor (hence the speaker) is at a known level, so the value of the digital test signal is noted. The impedance of the speaker is then determined from the test signal value and the speaker current.
摘要翻译： 用于检测耦合到数字放大器的输出负载的阻抗并补偿放大器的响应的变化的系统和方法。 本发明的一个实施例在D类脉宽调制（PWM）放大器中实现。 在本实施例中，产生数字PCM测试信号。 该测试信号由放大器处理以产生用于驱动扬声器的对应的模拟音频输出信号。 使用与扬声器串联放置的检测电阻器来产生与参考电压相比较的测试电压。 当测试电压达到参考电压时，通过检测电阻器（因此扬声器）的电流处于已知电平，因此记录数字测试信号的值。 然后从测试信号值和扬声器电流确定扬声器的阻抗。
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