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1. 发明授权

US07667552B2 Discrete dithered frequency pulse width modulation 有权
标题翻译：离散啁啾频率脉宽调制
公开(公告)号：US07667552B2
公开(公告)日：2010-02-23
申请号：US11733610
申请日：2007-04-10
申请人： Pallab Midya , Xin Geng
发明人： Pallab Midya , Xin Geng
IPC分类号： H03K7/00
CPC分类号： H03F3/217 , H03F2200/351 , H03K7/08 , H04B15/02 , H04B2215/067
摘要： A system is described for generating a discrete noise-shaped variable switching frequency signal that may be used to define a digital pulse width modulation (“PWM”) period. The system may define a switching frequency waveform that may be used to generate a current switching frequency signal as a function of a system clock. The system may quantize the current switching frequency signal to generate a discrete switching frequency signal that is realizable with the system clock. The system may detect quantization noise and input the noise into the current switching frequency signal to eliminate or reduce discrete tones at the switching frequencies of a PWM signal spectrum.
摘要翻译：描述了一种用于产生可用于定义数字脉宽调制（“PWM”）周期的离散噪声形可变开关频率信号的系统。系统可以定义可用于产生作为系统时钟的函数的当前开关频率信号的开关频率波形。该系统可以量化当前开关频率信号以产生可利用系统时钟实现的离散开关频率信号。该系统可以检测量化噪声并将噪声输入到当前开关频率信号中以消除或减少在PWM信号频谱的开关频率处的离散音调。

2. 发明申请

US20080252392A1 DISCRETE DITHERED FREQUENCY PULSE WIDTH MODULATION 有权
标题翻译：离散频率脉冲宽度调制
公开(公告)号：US20080252392A1
公开(公告)日：2008-10-16
申请号：US11733610
申请日：2007-04-10
申请人： Pallab Midya , Xin Geng
发明人： Pallab Midya , Xin Geng
IPC分类号： H03C3/09
CPC分类号： H03F3/217 , H03F2200/351 , H03K7/08 , H04B15/02 , H04B2215/067
摘要： A system is described for generating a discrete noise-shaped variable switching frequency signal that may be used to define a digital pulse width modulation (“PWM”) period. The system may define a switching frequency waveform that may be used to generate a current switching frequency signal as a function of a system clock. The system may quantize the current switching frequency signal to generate a discrete switching frequency signal that is realizable with the system clock. The system may detect quantization noise and input the noise into the current switching frequency signal to eliminate or reduce discrete tones at the switching frequencies of a PWM signal spectrum.
摘要翻译：描述了一种用于产生可用于定义数字脉宽调制（“PWM”）周期的离散噪声形可变开关频率信号的系统。系统可以定义可用于产生作为系统时钟的函数的当前开关频率信号的开关频率波形。该系统可以量化当前开关频率信号以产生可利用系统时钟实现的离散开关频率信号。该系统可以检测量化噪声并将噪声输入到当前开关频率信号中以消除或减少在PWM信号频谱的开关频率处的离散音调。

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