公开(公告)号：US08625821B2

公开(公告)日：2014-01-07

申请号：US12835176

申请日：2010-07-13

申请人： Hae-jong Kim ,  Hae-kwang Park

发明人： Hae-jong Kim ,  Hae-kwang Park

IPC分类号： H04R25/00

CPC分类号： H03F3/217

摘要： A method of outputting an audio signal includes receiving an audio signal; generating a carrier waves having phases differing from each other; generating modulation signals by comparing the respective carrier waves with the audio signal; amplifying the modulation signals; and outputting the amplified modulation signals.

摘要翻译： 输出音频信号的方法包括接收音频信号; 产生具有彼此不同的相位的载波; 通过将各个载波与音频信号进行比较来产生调制信号; 放大调制信号; 并输出放大的调制信号。

公开(公告)号：US09130513B2

公开(公告)日：2015-09-08

申请号：US12977659

申请日：2010-12-23

申请人： Dong-hyun Lim ,  Hae-kwang Park

发明人： Dong-hyun Lim ,  Hae-kwang Park

IPC分类号： H03F21/00 ,  H03F3/217

CPC分类号： H03F3/2173 ,  H03F2200/03 ,  H03F2200/351

摘要： An audio signal amplifying device and method for reducing a size and corresponding power consumption of demodulation filters in the signal amplifying device. In the device and method, carrier waves having phase shifts are generated from a received audio signal. The shifted carrier waves are compared to the audio signal to generate modulation signals, which are amplified based on a power supply voltage. The amplified modulation signals or a power supply signal are output based on a comparison between the carrier waves and the audio signal. The output signals are synthesized to produce a synthesized signal having a lower average voltage and current value, thus reducing power consumption of the signal amplifying device.

摘要翻译： 一种用于减小信号放大装置中的解调滤波器的尺寸和相应的功率消耗的音频信号放大装置和方法。 在装置和方法中，从接收的音频信号产生具有相移的载波。 将移位的载波与音频信号进行比较，以产生基于电源电压被放大的调制信号。 基于载波和音频信号之间的比较输出放大的调制信号或电源信号。 合成输出信号以产生具有较低平均电压和电流值的合成信号，从而降低信号放大装置的功耗。

公开(公告)号：US07443235B2

公开(公告)日：2008-10-28

申请号：US11650944

申请日：2007-01-09

申请人： Byoung-min Mun ,  Hae-kwang Park

发明人： Byoung-min Mun ,  Hae-kwang Park

IPC分类号： H03F3/38

CPC分类号： H03F3/217

摘要： A digital audio system to store and reproduce a digital PWM signal and a method of processing an audio signal. The method includes; converting an audio source signal into a digital pulse width modulation (PWM) signal through a series of signal processing processes and storing the PWM signal in a separate storage medium, when an audio signal is reproduced, reading the digital PWM signal stored in the storage medium and decoding the signal into an analog PWM signal, and performing a power switching operation with the decoded analog PWM signal and extracting an audio signal.

摘要翻译： 一种用于存储和再现数字PWM信号的数字音频系统以及处理音频信号的方法。 该方法包括： 通过一系列信号处理处理将音频源信号转换为数字脉宽调制（PWM）信号，并且当再现音频信号时，将PWM信号存储在单独的存储介质中，读取存储在存储介质中的数字PWM信号 并将该信号解码为模拟PWM信号，并用解码的模拟PWM信号进行电源切换操作并提取音频信号。

公开(公告)号：US20070296489A1

公开(公告)日：2007-12-27

申请号：US11650944

申请日：2007-01-09

申请人： Byoung-min Mun ,  Hae-kwang Park

发明人： Byoung-min Mun ,  Hae-kwang Park

IPC分类号： H03F3/38

CPC分类号： H03F3/217

摘要： A digital audio system to store and reproduce a digital PWM signal and a method of processing an audio signal. The method includes; converting an audio source signal into a digital pulse width modulation (PWM) signal through a series of signal processing processes and storing the PWM signal in a separate storage medium, when an audio signal is reproduced, reading the digital PWM signal stored in the storage medium and decoding the signal into an analog PWM signal, and performing a power switching operation with the decoded analog PWM signal and extracting an audio signal.

摘要翻译： 一种用于存储和再现数字PWM信号的数字音频系统以及处理音频信号的方法。 该方法包括： 通过一系列信号处理处理将音频源信号转换为数字脉宽调制（PWM）信号，并且当再现音频信号时，将PWM信号存储在单独的存储介质中，读取存储在存储介质中的数字PWM信号 并将该信号解码为模拟PWM信号，并用解码的模拟PWM信号进行电源切换操作并提取音频信号。

公开(公告)号：US20070170983A1

公开(公告)日：2007-07-26

申请号：US11591505

申请日：2006-11-02

申请人： Young-suk Song ,  Hee-soo Lee ,  Hae-kwang Park ,  Zhun-woo Kim

发明人： Young-suk Song ,  Hee-soo Lee ,  Hae-kwang Park ,  Zhun-woo Kim

IPC分类号： H03F3/38

CPC分类号： H03F3/217 ,  H03F3/68 ,  H04R3/12 ,  H04S3/002

摘要： A multi-channel digital amplifier system to generate a pulse width modulation (PWM) signal having a different switching frequency in each channel, and a signal processing method thereof. The digital amplifier system includes a PWM conversion unit to convert a plurality of audio signals on a plurality of channels into low output power PWM signals having switching frequencies that are different from each other, a switching circuit unit to amplify the plurality of low output power PWM signals to a plurality of high power output PWM signals on the respective channels, and a filter unit to restore the plurality of high output power PWM signals to a plurality of analog audio signals on the respective channels.

摘要翻译： 一种多通道数字放大器系统，用于产生在每个通道中具有不同开关频率的脉宽调制（PWM）信号及其信号处理方法。 数字放大器系统包括：PWM转换单元，用于将多个通道上的多个音频信号转换成具有彼此不同的开关频率的低输出功率PWM信号;开关电路单元，用于放大多个低输出功率PWM 信号到各个通道上的多个高功率输出PWM信号，以及滤波器单元，用于将多个高输出功率PWM信号恢复到相应通道上的多个模拟音频信号。

公开(公告)号：US08410845B2

公开(公告)日：2013-04-02

申请号：US12503978

申请日：2009-07-16

申请人： Hae-kwang Park

发明人： Hae-kwang Park

IPC分类号： H03F3/217

CPC分类号： H03F1/26 ,  H03F3/217 ,  H03F3/2173 ,  H03F2200/348 ,  H03F2200/351

摘要： A switching power amplifier having a pulse width modulation (PWM) signal generation unit that converts an input audio signal into a PWM signal with a predetermined carrier frequency, a correction unit that corrects the difference between an audio signal included in the PWM signal and a negative feedback output audio signal to generate a corrected PWM signal, a low pass filter that removes a high-frequency component from the corrected PWM signal, a frequency modulation unit that modulates the corrected PWM signal so that the corrected PWM signal has a switching frequency different from the carrier frequency of the input PWM signal to generate a modulated PWM signal, and a power amplification unit that amplifies a power of the modulated PWM signal.

摘要翻译： 一种具有将输入音频信号转换成具有预定载波频率的PWM信号的脉冲宽度调制（PWM）信号生成单元的开关功率放大器，修正包含在PWM信号中的音频信号与负信号之间的差的校正单元 反馈输出音频信号以产生经校正的PWM信号，从校正的PWM信号中去除高频分量的低通滤波器;调频单元，其对经校正的PWM信号进行调制，使得校正后的PWM信号的开关频率不同于 用于产生调制PWM信号的输入PWM信号的载波频率，以及放大调制PWM信号的功率的功率放大单元。

公开(公告)号：US08224399B2

公开(公告)日：2012-07-17

申请号：US11651016

申请日：2007-01-09

申请人： Jae-cheol Lee ,  Hae-kwang Park

发明人： Jae-cheol Lee ,  Hae-kwang Park

IPC分类号： H04M1/00 ,  H04M1/04 ,  H01Q1/12 ,  H04B1/16

CPC分类号： H04B1/1607 ,  H03F3/217

摘要： A method and apparatus to supply a power voltage to a mobile device in a variable manner in order to provide high output power and a high quality sound environment and a mobile device using the same. The apparatus includes a volume control unit to detect installation of an external power supply and to generate a voltage control value corresponding to a current volume level, and a DC-DC converter unit to convert a voltage of an internal power supply in a variable manner on the basis of the voltage control value generated in the volume control unit in order to drive the switching power amplifier.

摘要翻译： 为了提供高输出功率和高质量的声音环境以及使用该功能的移动设备，以可变的方式向移动设备提供电源电压的方法和装置。 该装置包括：音量控制单元，用于检测外部电源的安装并产生与当前音量电平对应的电压控制值;以及DC-DC转换器单元，用于将内部电源的电压以可变方式转换为 为了驱动开关功率放大器，在音量控制单元中产生的电压控制值的基础。

公开(公告)号：US07795962B2

公开(公告)日：2010-09-14

申请号：US11648623

申请日：2007-01-03

申请人： Hae-kwang Park

发明人： Hae-kwang Park

IPC分类号： H03F3/38

CPC分类号： H03F3/217

摘要： An error correction method and apparatus to enhance performance of a switching power amplifier through digital feedback of an audio pulse width modulation (PWM) signal. The error correction apparatus includes a PWM unit to convert an audio signal into a PWM signal, a power stage unit to switch and amplify power of the PWM signal generated by the PWM unit, an error signal extraction unit to compare a reference PWM signal generated in the PWM unit with the PWM signal output from the power stage unit, thereby extracting an error signal, a remodulation unit to compare the error signal extracted in the error signal extraction unit with a reference signal having a predetermined slope, thereby modulating the error signal to an error PWM signal, and a signal correction unit to correct an error, by changing the pulse width of the PWM unit according to the error PWM signal generated in the remodulation unit.

摘要翻译： 一种通过音频脉宽调制（PWM）信号的数字反馈来提高开关功率放大器的性能的纠错方法和装置。 误差校正装置包括将音频信号转换为PWM信号的PWM单元，用于切换和放大由PWM单元产生的PWM信号的功率的功率级单元;误差信号提取单元，用于将产生的参考PWM信号进行比较; 所述PWM单元具有从功率级单元输出的PWM信号，从而提取误差信号，再调制单元将误差信号提取单元中提取的误差信号与具有预定斜率的参考信号进行比较，从而将误差信号调制为 通过根据在再调制单元中产生的误差PWM信号改变PWM单元的脉冲宽度来校正误差的信号校正单元，错误PWM信号和信号校正单元。

公开(公告)号：US07672463B2

公开(公告)日：2010-03-02

申请号：US10990975

申请日：2004-11-18

申请人： Hae-kwang Park ,  Young-suk Song

发明人： Hae-kwang Park ,  Young-suk Song

IPC分类号： H03G11/00

CPC分类号： H05K7/20209 ,  G05D23/1919 ,  H03F1/52 ,  H03F2200/03 ,  H03F2200/447

摘要： A temperature control apparatus used with an audio amp to prevent the audio amp from overheating and noise from being generated by effectively controlling a cooling fan of the audio amp includes a power supply to supply an electrical power, a power amp to amplify an input audio signal using the electrical power supplied from the power supply, a signal detector to detect the amount of the current flowing from the power supply during a predetermined time, a temperature sensor to sense a temperature over a predetermined level generated from the power amp, and a micro controller to control a cooling fan according to the amount of current output from the signal detector and/or the temperature sensed by the temperature sensor.

摘要翻译： 与音频放大器一起使用的温度控制装置防止音频放大器过热，并且通过有效地控制音频放大器的冷却风扇产生噪声，包括供电电源的电源，功率放大器以放大输入音频信号 使用从电源提供的电力，信号检测器，用于检测在预定时间期间从电源流出的电流量;温度传感器，用于感测从功率放大器产生的预定电平以上的温度;以及微型 控制器根据从信号检测器输出的电流量和/或由温度传感器感测的温度来控制冷却风扇。

公开(公告)号：US07528650B2

公开(公告)日：2009-05-05

申请号：US11591505

申请日：2006-11-02

申请人： Young-suk Song ,  Hee-soo Lee ,  Hae-kwang Park ,  Zhun-woo Kim

发明人： Young-suk Song ,  Hee-soo Lee ,  Hae-kwang Park ,  Zhun-woo Kim

IPC分类号： H03F3/38

CPC分类号： H03F3/217 ,  H03F3/68 ,  H04R3/12 ,  H04S3/002

摘要： A multi-channel digital amplifier system to generate a pulse width modulation (PWM) signal having a different switching frequency in each channel, and a signal processing method thereof. The digital amplifier system includes a PWM conversion unit to convert a plurality of audio signals on a plurality of channels into low output power PWM signals having switching frequencies that are different from each other, a switching circuit unit to amplify the plurality of low output power PWM signals to a plurality of high power output PWM signals on the respective channels, and a filter unit to restore the plurality of high output power PWM signals to a plurality of analog audio signals on the respective channels.

摘要翻译： 一种多通道数字放大器系统，用于产生在每个通道中具有不同开关频率的脉宽调制（PWM）信号及其信号处理方法。 数字放大器系统包括：PWM转换单元，用于将多个通道上的多个音频信号转换成具有彼此不同的开关频率的低输出功率PWM信号;开关电路单元，用于放大多个低输出功率PWM 信号到各个通道上的多个高功率输出PWM信号，以及滤波器单元，用于将多个高输出功率PWM信号恢复到相应通道上的多个模拟音频信号。