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1.发明授权Multi-channel digital amplifier, signal processing method thereof, and audio reproducing system having the same 有权多通道数字放大器，其信号处理方法和具有该多通道数字放大器的音频再现系统公开(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
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。
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公开(公告)号：US20070136770A1
公开(公告)日：2007-06-14
申请号：US11581425
申请日：2006-10-17
申请人： Zhun-woo Kim , Seong-cheol Jang
发明人： Zhun-woo Kim , Seong-cheol Jang
IPC分类号： H04N7/18
CPC分类号： H04N21/8106 , H04N21/2368 , H04N21/4131 , H04N21/4341 , H04N21/43637 , H04N21/6162 , H04R3/12 , H04R5/04 , H04R2420/07
摘要： A wireless audio transmission method and a device. The wireless audio transmission device includes: an audio processor that receives a digital audio signal from an external multimedia apparatus when the wireless audio transmission device is docked at the external multimedia apparatus, performing a predetermined signal processing operation of adding a sound effect to the received digital audio signal, and generating a composite signal; a wireless transmission processor to receive the composite signal generated by the audio processor and to convert the received composite signal into a wireless packet; and a wireless transmitter to modulate the wireless packet into an RF signal and to transmit the RF signal.
摘要翻译： 无线音频传输方法和设备。 无线音频传输设备包括：音频处理器，当无线音频传输设备对接在外部多媒体设备时，从外部多媒体设备接收数字音频信号，执行预定的信号处理操作，以将声音效果添加到接收的数字 音频信号，并产生复合信号; 无线传输处理器，用于接收由音频处理器产生的复合信号，并将接收的复合信号转换成无线分组; 以及无线发射机，用于将无线分组调制成RF信号并发送RF信号。
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3.发明申请Method and apparatus to control output power of a digital power amplifier optimized to a headphone and a portable audio player having the same 有权控制针对具有相同功能的耳机和便携式音频播放器优化的数字功率放大器的输出功率的方法和装置公开(公告)号：US20070098190A1
公开(公告)日：2007-05-03
申请号：US11581338
申请日：2006-10-17
申请人： Young-suk Song , Zhun-woo Kim
发明人： Young-suk Song , Zhun-woo Kim
CPC分类号： H03F3/2175 , H03F1/02 , H03F3/181 , H03F2200/03 , H03F2200/351 , H03F2200/393 , H03F2200/421 , H03F2200/471 , H04R1/1041 , H04R5/033 , H04R5/04 , H04R2420/05
摘要： A method and apparatus to control output power of a digital amplifier capable of automatically determining an impedance of an earphone or headphone connected to a portable audio device and outputting a power that is optimized according to the impedance. The apparatus is usable with a digital amplification device and includes a signal processing unit to convert a pulse signal into a direct current (DC) voltage by power-amplifying the pulse signal, an impedance measuring unit to connect a resistance device between the signal processing unit and a speaker unit and to detect a voltage value applied to the resistance device and the speaker unit, and a micom unit to generate a pulse signal having a predetermined duty cycle in the signal processing unit if the speaker unit is connected to the device, to determine an impedance of the speaker unit based on the voltage value detected by the impedance measuring unit, to control a power amplification by providing a voltage level control signal to the signal processing unit according to the determined impedance, and to control an audio level in an audio reproduction mode accordingly.
摘要翻译： 控制能够自动确定连接到便携式音频设备的耳机或耳机的阻抗的数字放大器的输出功率并输出根据阻抗优化的功率的方法和装置。 该装置可用于数字放大装置，并且包括信号处理单元，用于通过功率放大脉冲信号将脉冲信号转换成直流（DC）电压;阻抗测量单元，用于将信号处理单元 和扬声器单元，并且检测施加到电阻装置和扬声器单元的电压值，以及微型单元，用于在扬声器单元连接到装置时，在信号处理单元中产生具有预定占空比的脉冲信号， 基于由阻抗测量单元检测的电压值来确定扬声器单元的阻抗，以根据确定的阻抗向信号处理单元提供电压电平控制信号来控制功率放大，并且控制音频电平 相应的音频再现模式。
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公开(公告)号：US09438963B2
公开(公告)日：2016-09-06
申请号：US11581425
申请日：2006-10-17
申请人： Zhun-woo Kim , Seong-cheol Jang
发明人： Zhun-woo Kim , Seong-cheol Jang
IPC分类号： H04B5/00 , H03G3/00 , H04N21/81 , H04N21/2368 , H04N21/41 , H04N21/434 , H04N21/4363 , H04N21/61 , H04R5/04 , H04R3/12
CPC分类号： H04N21/8106 , H04N21/2368 , H04N21/4131 , H04N21/4341 , H04N21/43637 , H04N21/6162 , H04R3/12 , H04R5/04 , H04R2420/07
摘要： A wireless audio transmission method and a device. The wireless audio transmission device includes: an audio processor that receives a digital audio signal from an external multimedia apparatus when the wireless audio transmission device is docked at the external multimedia apparatus, performing a predetermined signal processing operation of adding a sound effect to the received digital audio signal, and generating a composite signal; a wireless transmission processor to receive the composite signal generated by the audio processor and to convert the received composite signal into a wireless packet; and a wireless transmitter to modulate the wireless packet into an RF signal and to transmit the RF signal.
摘要翻译： 无线音频传输方法和设备。 无线音频传输设备包括：音频处理器，当无线音频传输设备对接在外部多媒体设备时，从外部多媒体设备接收数字音频信号，执行预定的信号处理操作，以将声音效果添加到接收的数字 音频信号，并产生复合信号; 无线传输处理器，用于接收由音频处理器产生的复合信号，并将接收的复合信号转换成无线分组; 以及无线发射机，用于将无线分组调制成RF信号并发送RF信号。
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5.发明授权Method and apparatus to control output power of a digital power amplifier optimized to a headphone and a portable audio player having the same 有权控制针对具有相同功能的耳机和便携式音频播放器优化的数字功率放大器的输出功率的方法和装置公开(公告)号：US08014539B2
公开(公告)日：2011-09-06
申请号：US11581338
申请日：2006-10-17
申请人： Young-suk Song , Zhun-woo Kim
发明人： Young-suk Song , Zhun-woo Kim
IPC分类号： H04R1/10
CPC分类号： H03F3/2175 , H03F1/02 , H03F3/181 , H03F2200/03 , H03F2200/351 , H03F2200/393 , H03F2200/421 , H03F2200/471 , H04R1/1041 , H04R5/033 , H04R5/04 , H04R2420/05
摘要： A method and apparatus to control output power of a digital amplifier capable of automatically determining an impedance of an earphone or headphone connected to a portable audio device and outputting a power that is optimized according to the impedance. The apparatus is usable with a digital amplification device and includes a signal processing unit to convert a pulse signal into a direct current (DC) voltage by power-amplifying the pulse signal, an impedance measuring unit to connect a resistance device between the signal processing unit and a speaker unit and to detect a voltage value applied to the resistance device and the speaker unit, and a micom unit to generate a pulse signal having a predetermined duty cycle in the signal processing unit if the speaker unit is connected to the device, to determine an impedance of the speaker unit based on the voltage value detected by the impedance measuring unit, to control a power amplification by providing a voltage level control signal to the signal processing unit according to the determined impedance, and to control an audio level in an audio reproduction mode accordingly.
摘要翻译： 控制能够自动确定连接到便携式音频设备的耳机或耳机的阻抗的数字放大器的输出功率并输出根据阻抗优化的功率的方法和装置。 该装置可用于数字放大装置，并且包括信号处理单元，用于通过功率放大脉冲信号将脉冲信号转换成直流（DC）电压;阻抗测量单元，用于将信号处理单元 和扬声器单元，并且检测施加到电阻装置和扬声器单元的电压值，以及微型单元，用于在扬声器单元连接到装置时，在信号处理单元中产生具有预定占空比的脉冲信号， 基于由阻抗测量单元检测的电压值来确定扬声器单元的阻抗，以根据确定的阻抗向信号处理单元提供电压电平控制信号来控制功率放大，并且控制音频电平 相应的音频再现模式。
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6.发明申请Multi-channel digital amplifier, signal processing method thereof, and audio reproducing system having the same 有权多通道数字放大器，其信号处理方法和具有该多通道数字放大器的音频再现系统公开(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
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。
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