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1. 发明申请

US20060202754A1 Digital switching amplifier 有权
标题翻译：数字开关放大器
公开(公告)号：US20060202754A1
公开(公告)日：2006-09-14
申请号：US11370052
申请日：2006-03-08
申请人： Ken Yamamura , Akihiro Ikehara , Naoko Hyodo
发明人： Ken Yamamura , Akihiro Ikehara , Naoko Hyodo
IPC分类号： H03F1/36
CPC分类号： H03F1/26 , H03F1/34 , H03F3/217 , H03F2200/331
摘要： There is provided a digital switching amplifier capable of enhancing an S/N ratio at the time of a small signal output and reducing current consumption and electromagnetic interference (EMI). The digital switching amplifier according to the present invention is provided with an integrator 11 for integrating an input signal, quantizer 12 for quantizing the output signal of the integrator 11 with resolutions different for each of the predetermined signal regions, pulse width modulator 13 for performing pulse width modulation for each of signals quantized with different resolutions by the quantizer 12 using different proportionality coefficients, switching circuit 14 for providing the load 15 with electrical signals different in value for each of pulse-width modulated signals with different proportionality coefficients by the pulse width modulator 13 in response to the pulse-width modulated signal, and feedback circuit 17 for negatively feeding back the output of the quantizer 12 to the input of the integrator 11.
摘要翻译：提供了能够在小信号输出时提高S / N比并减少电流消耗和电磁干扰（EMI）的数字开关放大器。根据本发明的数字开关放大器设置有用于对输入信号进行积分的积分器11，用于量化积分器11的输出信号的量化器12具有针对每个预定信号区域的分辨率不同的脉冲宽度调制器13，用于执行脉冲使用不同比例系数由量化器12以不同分辨率量化的每个信号的宽度调制;切换电路14，用于通过脉冲宽度调制器为不同比例系数的脉冲宽度调制信号提供不同值的电信号响应于脉冲宽度调制信号，以及用于将量化器12的输出负反馈给积分器11的输入的反馈电路17。

2. 发明授权

US07330069B2 Digital switching amplifier 有权
标题翻译：数字开关放大器
公开(公告)号：US07330069B2
公开(公告)日：2008-02-12
申请号：US11370052
申请日：2006-03-08
申请人： Ken Yamamura , Akihiro Ikehara , Naoko Hyodo
发明人： Ken Yamamura , Akihiro Ikehara , Naoko Hyodo
IPC分类号： H03F3/38
CPC分类号： H03F1/26 , H03F1/34 , H03F3/217 , H03F2200/331
摘要： There is provided a digital switching amplifier capable of enhancing an S/N ratio at the time of a small signal output and reducing current consumption and electromagnetic interference (EMI). The digital switching amplifier according to the present invention is provided with an integrator 11 for integrating an input signal, quantizer 12 for quantizing the output signal of the integrator 11 with resolutions different for each of the predetermined signal regions, pulse width modulator 13 for performing pulse width modulation for each of signals quantized with different resolutions by the quantizer 12 using different proportionality coefficients, switching circuit 14 for providing the load 15 with electrical signals different in value for each of pulse-width modulated signals with different proportionality coefficients by the pulse width modulator 13 in response to the pulse-width modulated signal, and feedback circuit 17 for negatively feeding back the output of the quantizer 12 to the input of the integrator 11.
摘要翻译：提供了能够在小信号输出时提高S / N比并减少电流消耗和电磁干扰（EMI）的数字开关放大器。根据本发明的数字开关放大器设置有用于对输入信号进行积分的积分器11，用于量化积分器11的输出信号的量化器12具有针对每个预定信号区域的分辨率不同的脉冲宽度调制器13，用于执行脉冲使用不同比例系数由量化器12以不同分辨率量化的每个信号的宽度调制;切换电路14，用于通过脉冲宽度调制器为不同比例系数的脉冲宽度调制信号提供不同值的电信号响应于脉冲宽度调制信号，以及用于将量化器12的输出负反馈给积分器11的输入的反馈电路17。

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