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1. 发明申请

US20090002074A1 Power Supply Control Circuit 审中-公开
标题翻译：电源控制电路
公开(公告)号：US20090002074A1
公开(公告)日：2009-01-01
申请号：US11658698
申请日：2005-07-27
申请人： Hideaki Kushida , Hiroshi Saito , Hiroyasu Nakano
发明人： Hideaki Kushida , Hiroshi Saito , Hiroyasu Nakano
IPC分类号： H03F1/00 , H03F3/217
CPC分类号： H03F3/3016 , H02M2001/0045 , H03F3/217
摘要： The present invention is to provide a power supply control circuit that can effectively eliminate voltage distortion of an input signal during signal amplification. A power supply control circuit which controls a power supply voltage of a direct-current power source at a constant level and supplies the power supply voltage to an amplification circuit performing a differential operation alternately in accordance with a signal level of an input signal includes: a first transistor whose collector is connected to the direct-current power source and emitter is connected to the amplification circuit, for outputting a current; an error amplifier whose output port is connected to a base of the first transistor, for performing feedback control to hold a difference between a predetermined reference potential and a potential at the emitter of the first transistor at a constant level; and a second transistor whose emitter and base are mutually connected to the first transistor and collector is grounded, for absorbing a current.
摘要翻译：本发明是提供一种电源控制电路，其可以有效地消除信号放大期间输入信号的电压失真。控制直流电源的电源电压为恒定电平的电源控制电路，并且根据输入信号的信号电平交替地对执行差分运算的放大电路供给电源电压，包括：a 第一晶体管的集电极连接到直流电源，发射极连接到放大电路，用于输出电流; 误差放大器，其输出端口连接到所述第一晶体管的基极，用于执行反馈控制以将所述第一晶体管的预定参考电位和所述电位之间的差保持在恒定电平; 以及第二晶体管，其发射极和基极相互连接到第一晶体管和集电极接地，用于吸收电流。

2. 发明申请

US20060222183A1 Audio signal amplifying apparatus and distortion correcting method 审中-公开
标题翻译：音频信号放大装置和失真校正方法
公开(公告)号：US20060222183A1
公开(公告)日：2006-10-05
申请号：US11377258
申请日：2006-03-17
申请人： Hideaki Kushida , Hiroshi Saito
发明人： Hideaki Kushida , Hiroshi Saito
IPC分类号： H03G3/00
CPC分类号： H04R3/002
摘要： As an embodiment of the present invention, an audio signal is amplified by a power amplifier and an amplified audio signal is generated. By a current detection resistance and a differential amplifier provided between the power amplifier and a speaker, when the amplified audio signal is supplied to the speaker as an output audio signal, the current waveforms of the amplified audio signal on which a distortion component was superimposed by the effect of the speaker and the output audio signal are detected as a current detection signal. A distortion component signal is calculated based on the difference between the current detection signal and the audio signal. And an added result by that the distortion component signal was added to the audio signal by a distortion component adder is supplied to the power amplifier.
摘要翻译：作为本发明的一个实施例，音频信号被功率放大器放大并产生放大的音频信号。通过设置在功率放大器和扬声器之间的电流检测电阻和差分放大器，当放大的音频信号作为输出音频信号提供给扬声器时，放大的音频信号的电流波形在其上叠加有失真分量扬声器和输出音频信号的效果被检测为电流检测信号。基于电流检测信号和音频信号之间的差来计算失真分量信号。并且通过失真分量加法器将失真分量信号添加到音频信号的附加结果被提供给功率放大器。

3. 发明授权

US08155353B2 Device and method for driving speaker 失效
标题翻译：用于驱动扬声器的装置和方法
公开(公告)号：US08155353B2
公开(公告)日：2012-04-10
申请号：US11194679
申请日：2005-08-02
申请人： Hideaki Kushida , Hiroshi Saito
发明人： Hideaki Kushida , Hiroshi Saito
IPC分类号： H03F99/00 , H04R3/00
CPC分类号： H04R3/002 , H04R9/06
摘要： Distortion caused in the voltage of an audio signal due to a back electromotive force generated due to loads in a speaker is detected, the detected distorted voltage is eliminated from the voltage of the audio signal, and the audio signal without the distorted voltage is amplified and given to the speaker.
摘要翻译：检测到由于由于扬声器中的负载而产生的反电动势导致的音频信号的电压引起的失真，从音频信号的电压中消除检测到的失真电压，并且没有失真电压的音频信号被放大，给了演讲者

4. 发明申请

US20060029238A1 Device and method for driving speaker 失效
标题翻译：用于驱动扬声器的装置和方法
公开(公告)号：US20060029238A1
公开(公告)日：2006-02-09
申请号：US11194679
申请日：2005-08-02
申请人： Hideaki Kushida , Hiroshi Saito
发明人： Hideaki Kushida , Hiroshi Saito
IPC分类号： H04R3/00
CPC分类号： H04R3/002 , H04R9/06
摘要： Distortion caused in the voltage of an audio signal due to a back electromotive force generated due to loads in a speaker is detected, the detected distorted voltage is eliminated from the voltage of the audio signal, and the audio signal without the distorted voltage is amplified and given to the speaker.
摘要翻译：检测到由于由于扬声器中的负载而产生的反电动势导致的音频信号的电压引起的失真，从音频信号的电压中消除检测到的失真电压，并且没有失真电压的音频信号被放大，给了演讲者

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