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1.发明授权Method and apparatus for providing multiple channel audio in a computing system 有权用于在计算系统中提供多声道音频的方法和装置公开(公告)号：US06885900B1
公开(公告)日：2005-04-26
申请号：US09613344
申请日：2000-07-10
摘要： A method and apparatus for providing multiple channel audio in a computing system includes processing that begins by receiving an audio setup signal that indicates whether audio is to be outputted as stereo audio or multiple channel audio. When multiple channel audio is to be outputted, the line-in driver is disabled in the audio processing circuitry and the multiple channel driver of the audio processing circuitry is enabled. Thus, the multiple channel driver is operably coupled to the line-in audio jack. When the audio output is to be outputted as stereo audio, the multiple channel driver is disabled and the line-in driver is enable. Thus, the line-in driver is operably coupled to the line-in audio jack.
摘要翻译： 一种用于在计算系统中提供多声道音频的方法和装置包括通过接收音频设置信号开始的处理，该音频设置信号指示音频是要作为立体声还是多声道音频输出。 当要输出多声道音频时，音频处理电路中的线路输入驱动器被禁用，音频处理电路的多通道驱动器被使能。 因此，多通道驱动器可操作地耦合到线路输入音频插孔。 当音频输出作为立体声音频输出时，多声道驱动器被禁用，并且线路输入驱动器被使能。 因此，线路输入驱动器可操作地耦合到线路输入音频插孔。
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公开(公告)号：US06147634A
公开(公告)日：2000-11-14
申请号：US211616
申请日：1998-12-15
申请人： Giri N Rangan , Mathew A Rybicki
发明人： Giri N Rangan , Mathew A Rybicki
IPC分类号： H03M3/00
摘要： A method and apparatus for digital to analog signal conversions with reduced noise include processing that begins by receiving a digital signal and filtering the digital signal to produce a filtered digital signal. The filtering is tuned to attenuate components of the digital signal having frequencies near one-half the sampling rate frequency and to pass other components of the digital signal having frequencies away from one-half the sampling rate frequency. The filtered signals are then converted to analog signals based on a clock signal having a sampling rate frequency and a voltage reference.
摘要翻译： 用于具有降低噪声的数模转换信号转换的方法和装置包括通过接收数字信号并对数字信号进行滤波以产生经滤波的数字信号开始的处理。 滤波被调谐以衰减具有接近采样率频率的一半的频率的数字信号的分量，并且使得数字信号的其他分量具有远离采样频率的一半的频率。 然后，滤波后的信号基于具有采样率频率和电压基准的时钟信号转换成模拟信号。
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公开(公告)号：US6128354A
公开(公告)日：2000-10-03
申请号：US197653
申请日：1998-11-23
CPC分类号： H04L25/063 , H04L25/4902
摘要： A pre-amplifier circuit, which may be used in a variety of data recovery circuits to accurately recover data transmissions, includes an input regulatory circuit, a feedback circuit, and an amplifier. The input regulatory circuit regulates the magnitude of the data signal provided to the amplifier based on feedback signals from a feedback circuit. For low level data signals, the input regulatory circuit provides a fill, or almost full, representation of the data signal to the amplifier for amplification. But, when the data signal levels increase, the input regulatory circuit attenuates, based on the feedback signals, the data signals more and more before providing them to the amplifier, such that the output of the amplifier stays within a certain range.
摘要翻译： 可以用于各种数据恢复电路以准确地恢复数据传输的前置放大器电路包括输入调节电路，反馈电路和放大器。 输入调节电路基于来自反馈电路的反馈信号来调节提供给放大器的数据信号的幅度。 对于低电平数据信号，输入调节电路向放大器提供数据信号的填充或几乎全部的表示，用于放大。 但是，当数据信号电平增加时，输入调节电路在将它们提供给放大器之前，越来越多地基于反馈信号衰减数据信号，使得放大器的输出保持在一定范围内。
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公开(公告)号：US6055283A
公开(公告)日：2000-04-25
申请号：US197823
申请日：1998-11-23
CPC分类号： H04L25/063 , H04L25/4902
摘要： A pre-amplifier circuit, which may be used in a variety of data recovery circuits to accurately recover data transmissions, includes an input regulatory circuit, a feedback circuit, and an amplifier. The input regulatory circuit regulates the magnitude of the data signal provided to the amplifier based on feedback signals from a feedback circuit. For low level data signals, the input regulatory circuit provides a full, or almost full, representation of the data signal to the amplifier for amplification. But, when the data signal levels increase, the input regulatory circuit attenuates, based on the feedback signals, the data signals more and more before providing them to the amplifier, such that the output of the amplifier stays within a certain range.
摘要翻译： 可以用于各种数据恢复电路以准确地恢复数据传输的前置放大器电路包括输入调节电路，反馈电路和放大器。 输入调节电路基于来自反馈电路的反馈信号来调节提供给放大器的数据信号的幅度。 对于低电平数据信号，输入调节电路向放大器提供数据信号的完整或几乎全部的表示，用于放大。 但是，当数据信号电平增加时，输入调节电路在将它们提供给放大器之前，越来越多地基于反馈信号衰减数据信号，使得放大器的输出保持在一定范围内。
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公开(公告)号：US08238577B2
公开(公告)日：2012-08-07
申请号：US11873059
申请日：2007-10-16
IPC分类号： H03G5/00
CPC分类号： H03G5/00
摘要： A computer audio system includes an audio codec and a lone controller. The audio codec is operably coupled to receive audio information, which includes tone control settings, PCM digital audio inputs and PCM digital audio outputs. In addition, the audio codec may receive audio information as analog input signals via a line-in, a CD input, or an auxiliary input. Based on the audio information, the audio codec provides a first stereo output, a second stereo output and a monotone audio output. The tone controller is operably coupled to the audio codec and includes a low pass filter, a high pass filter, a band pass filter, and a summing module. The low pass filter is operably coupled to filter the monotone audio output and isolates bass components of the audio signal being processed. By further coupling a volume control module to the low pass filter, the bass component of the audio signal being processed may be varied. The high pass filler is operably coupled to filter the first stereo audio signal to pass treble components of the audio signal being processed. Similarly, a volume control module may be coupled to the high pass filter to provide tone control for the treble components of the audio signal being processed. The band pass filter is operably coupled to filter the second stereo audio output, which passes midband components of the audio signal being processed. Similarly, a volume control module may be coupled to the band pass filter such that midband components of the audio signal being processed may be adjusted. The summing module sums the bass component, treble component and midband component of the audio signal being processed to produce a tone controlled audio output.
摘要翻译： 计算机音频系统包括音频编解码器和单独的控制器。 音频编解码器可操作地耦合以接收包括音调控制设置，PCM数字音频输入和PCM数字音频输出的音频信息。 此外，音频编解码器可以经由线路输入，CD输入或辅助输入接收作为模拟输入信号的音频信息。 基于音频信息，音频编解码器提供第一立体声输出，第二立体声输出和单调音频输出。 音调控制器可操作地耦合到音频编解码器，并且包括低通滤波器，高通滤波器，带通滤波器和求和模块。 低通滤波器可操作地耦合以对单调音频输出进行滤波，并隔离正在处理的音频信号的低音分量。 通过进一步将音量控制模块耦合到低通滤波器，正在处理的音频信号的低音分量可以变化。 高通填充器可操作地耦合以对第一立体声音频信号进行滤波，以传递被处理的音频信号的高音分量。 类似地，音量控制模块可以耦合到高通滤波器，以为被处理的音频信号的高音分量提供音调控制。 带通滤波器可操作地耦合以对第二立体声音频输出进行滤波，该第二立体声音频输出通过正在处理的音频信号的中频带分量。 类似地，音量控制模块可以耦合到带通滤波器，使得正在处理的音频信号的中频带分量可以被调整。 求和模块将正在处理的音频信号的低音分量，高音分量和中频带分量相加，以产生音调控制的音频输出。
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公开(公告)号：US06931139B1
公开(公告)日：2005-08-16
申请号：US09690215
申请日：2000-10-17
CPC分类号： H03G5/00
摘要： A computer audio system includes an audio codec and a tone controller. The audio codec is operably coupled to receive audio information, which includes tone control settings, PCM digital audio inputs and PCM digital audio outputs. In addition, the audio codec may receive audio information as analog input signals via a line-in, a CD input, or an auxiliary input. Based on the audio information, the audio codec provides a first stereo output, a second stereo output and a monotone audio output. The tone controller is operably coupled to the audio codec and includes a low pass filter, a high pass filter, a band pass filter, and a summing module. The low pass filter is operably coupled to filter the monotone audio output and isolates bass components of the audio signal being processed. By further coupling a volume control module to the low pass filter, the bass component of the audio signal being processed may be varied. The high pass filter is operably coupled to filter the first stereo audio signal to pass treble components of the audio signal being processed. Similarly, a volume control module may be coupled to the high pass filter to provide tone control for the treble components of the audio signal being processed. The band pass filter is operably coupled to filter the second stereo audio output, which passes midband components of the audio signal being processed. Similarly, a volume control module may be coupled to the band pass filter such that midband components of the audio signal being processed may be adjusted. The summing module sums the bass component, treble component and midband component of the audio signal being processed to produce a tone controlled audio output.
摘要翻译： 计算机音频系统包括音频编解码器和音调控制器。 音频编解码器可操作地耦合以接收包括音调控制设置，PCM数字音频输入和PCM数字音频输出的音频信息。 此外，音频编解码器可以经由线路输入，CD输入或辅助输入接收作为模拟输入信号的音频信息。 基于音频信息，音频编解码器提供第一立体声输出，第二立体声输出和单调音频输出。 音调控制器可操作地耦合到音频编解码器，并且包括低通滤波器，高通滤波器，带通滤波器和求和模块。 低通滤波器可操作地耦合以对单调音频输出进行滤波，并隔离正在处理的音频信号的低音分量。 通过进一步将音量控制模块耦合到低通滤波器，正在处理的音频信号的低音分量可以变化。 高通滤波器可操作地耦合以对第一立体声音频信号进行滤波，以传递被处理的音频信号的高音分量。 类似地，音量控制模块可以耦合到高通滤波器，以为被处理的音频信号的高音分量提供音调控制。 带通滤波器可操作地耦合以对第二立体声音频输出进行滤波，该第二立体声音频输出通过正在处理的音频信号的中频带分量。 类似地，音量控制模块可以耦合到带通滤波器，使得正在处理的音频信号的中频带分量可以被调整。 求和模块将正在处理的音频信号的低音分量，高音分量和中频带分量相加，以产生音调控制的音频输出。
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公开(公告)号：US06175601B1
公开(公告)日：2001-01-16
申请号：US09198075
申请日：1998-11-23
IPC分类号： H04L2708
CPC分类号： H04L25/063 , H04L25/4902
摘要： A pre-amplifier circuit, which may be used in a variety of data recovery circuits to accurately recover data transmissions, includes an input regulatory circuit, a feedback circuit, and an amplifier. The input regulatory circuit regulates the magnitude of the data signal provided to the amplifier based on feedback signals from a feedback circuit. For low level data signals, the input regulatory circuit provides a full, or almost full, representation of the data signal to the amplifier for amplification. But, when the data signal levels increase, the input regulatory circuit attenuates, based on the feedback signals, the data signals more and more before providing them to the amplifier, such that the output of the amplifier stays within a certain range.
摘要翻译： 可以用于各种数据恢复电路以准确地恢复数据传输的前置放大器电路包括输入调节电路，反馈电路和放大器。 输入调节电路基于来自反馈电路的反馈信号来调节提供给放大器的数据信号的幅度。 对于低电平数据信号，输入调节电路向放大器提供数据信号的完整或几乎全部的表示，用于放大。 但是，当数据信号电平增加时，输入调节电路在将它们提供给放大器之前，越来越多地基于反馈信号衰减数据信号，使得放大器的输出保持在一定范围内。
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公开(公告)号：US08233639B2
公开(公告)日：2012-07-31
申请号：US11873005
申请日：2007-10-16
IPC分类号： H03G5/00
CPC分类号： H03G5/00
摘要： An audio codec includes an input for receiving audio information. Audio processing circuitry produces a first stereo audio signal, a second stereo audio signal, and a monotone audio signal based on the audio information. A low pass filter filters the monotone audio output, wherein the low pass filter passes a bass component of the monotone audio signal substantially unattenuated and attenuates higher frequency components of the monotone audio signal. A high pass filter filters the first stereo audio output, wherein the high passes filter passes a treble component of the first stereo audio signal substantially unattenuated and attenuates lower frequency components of the first stereo audio signal. A band pass filter filters the second stereo audio output, wherein the band pass filter passes a mid band component of the second audio signal substantially unattenuated and attenuates low frequency components and high frequency components of the second stereo audio signal. A summing module produces a tone controlled audio output.
摘要翻译： 音频编解码器包括用于接收音频信息的输入。 音频处理电路基于音频信息产生第一立体声音频信号，第二立体声音频信号和单调音频信号。 低通滤波器对单调音频输出进行滤波，其中低通滤波器使单调音频信号的低音分量基本上不衰减，并且衰减单调音频信号的较高频率分量。 高通滤波器对第一立体声音频输出进行滤波，其中高通滤波器使第一立体声音频信号的高音分量基本上不衰减，并且衰减第一立体声音频信号的较低频率分量。 带通滤波器对第二立体声音频输出进行滤波，其中带通滤波器使第二音频信号的中频带分量基本上不衰减，并且衰减第二立体声音频信号的低频分量和高频分量。 求和模块产生音调控制音频输出。
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公开(公告)号：US07302067B2
公开(公告)日：2007-11-27
申请号：US11014451
申请日：2004-12-16
IPC分类号： H03G5/00
CPC分类号： H03G5/00
摘要： A computer audio system includes an audio codec and a tone controller. The audio codec is operably coupled to receive audio information, which includes tone control settings, PCM digital audio inputs and PCM digital audio outputs. In addition, the audio codec may receive audio information as analog input signals via a line-in, a CD input, or an auxiliary input. Based on the audio information, the audio codec provides a first stereo output, a second stereo output and a monotone audio output. The tone controller is operably coupled to the audio codec and includes a low pass filter, a high pass filter, a band pass filter, and a summing module. The low pass filter is operably coupled to filter the monotone audio output and isolates bass components of the audio signal being processed. By further coupling a volume control module to the low pass filter, the bass component of the audio signal being processed may be varied. The high pass filter is operably coupled to filter the first stereo audio signal to pass treble components of the audio signal being processed. Similarly, a volume control module may be coupled to the high pass filter to provide tone control for the treble components of the audio signal being processed. The band pass filter is operably coupled to filter the second stereo audio output, which passes midband components of the audio signal being processed. Similarly, a volume control module may be coupled to the band pass filter such that midband components of the audio signal being processed may be adjusted. The summing module sums the bass component, treble component and midband component of the audio signal being processed to produce a tone controlled audio output.
摘要翻译： 计算机音频系统包括音频编解码器和音调控制器。 音频编解码器可操作地耦合以接收包括音调控制设置，PCM数字音频输入和PCM数字音频输出的音频信息。 此外，音频编解码器可以经由线路输入，CD输入或辅助输入接收作为模拟输入信号的音频信息。 基于音频信息，音频编解码器提供第一立体声输出，第二立体声输出和单调音频输出。 音调控制器可操作地耦合到音频编解码器，并且包括低通滤波器，高通滤波器，带通滤波器和求和模块。 低通滤波器可操作地耦合以对单调音频输出进行滤波，并隔离正在处理的音频信号的低音分量。 通过进一步将音量控制模块耦合到低通滤波器，正在处理的音频信号的低音分量可以变化。 高通滤波器可操作地耦合以对第一立体声音频信号进行滤波，以传递被处理的音频信号的高音分量。 类似地，音量控制模块可以耦合到高通滤波器，以为被处理的音频信号的高音分量提供音调控制。 带通滤波器可操作地耦合以对第二立体声音频输出进行滤波，该第二立体声音频输出通过被处理的音频信号的中频带分量。 类似地，音量控制模块可以耦合到带通滤波器，使得正在处理的音频信号的中频带分量可以被调整。 求和模块将正在处理的音频信号的低音分量，高音分量和中频带分量相加，以产生音调控制的音频输出。
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公开(公告)号：US06137279A
公开(公告)日：2000-10-24
申请号：US376501
申请日：1999-08-18
CPC分类号： H02J7/0063 , H02J2007/0067
摘要： An adjustable power control module includes a supply voltage comparison circuit, a signal dependent current source, and a power regulation module. The supply voltage comparison circuit is operably coupled to compare a supply voltage with a low-powered threshold. When the supply voltage is less than the low-power threshold, the supply voltage comparison circuit provides a corresponding indication to the signal dependent current source. The signal dependent current source generates a first regulated current when the supply voltage is less than the low powered threshold based on the indication and generates a second regulated current when the supply voltage is above the low power threshold. The second regulated current is larger than the first regulated current. The power regulation module provides the first or second regulated current to an associated circuit. As such, the current supplied to the circuit is regulated based on operating conditions for the circuit. As such, when operating conditions dictate that more power can be provided to the circuit, the adjustable power control module provides more current conversely when the operating conditions indicate less power, the adjustable power control module provides less power.
摘要翻译： 可调功率控制模块包括电源电压比较电路，信号相关电流源和功率调节模块。 电源电压比较电路可操作地耦合以将电源电压与低功率阈值进行比较。 当电源电压小于低功率阈值时，电源电压比较电路为信号依赖电流源提供相应的指示。 当电源电压小于基于指示的低功率阈值时，信号相关电流源产生第一调节电流，并且当电源电压高于低功率阈值时产生第二调节电流。 第二个调节电流大于第一个调节电流。 功率调节模块向相关电路提供第一或第二调节电流。 因此，基于电路的操作条件来调节提供给电路的电流。 因此，当操作条件规定可以向电路提供更多的功率时，当操作条件指示较少的功率时，可调功率控制模块相反地提供更多的电流，所述可调功率控制模块提供更少的功率。
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