SWITCHING POWER AMPLIFIER AND METHOD OF CONTROLLING THE SAME
    11.
    发明申请
    SWITCHING POWER AMPLIFIER AND METHOD OF CONTROLLING THE SAME 有权
    切换功率放大器及其控制方法

    公开(公告)号:US20130169356A1

    公开(公告)日:2013-07-04

    申请号:US13775816

    申请日:2013-02-25

    Inventor: Hae-kwang PARK

    Abstract: 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.

    Abstract translation: 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。

    METHOD AND APPARATUS FOR OUTPUTTING AUDIO SIGNAL
    12.
    发明申请
    METHOD AND APPARATUS FOR OUTPUTTING AUDIO SIGNAL 有权
    用于输出音频信号的方法和装置

    公开(公告)号:US20130094673A1

    公开(公告)日:2013-04-18

    申请号:US13653900

    申请日:2012-10-17

    CPC classification number: H03F3/185 H03F1/327 H03F3/217 H03F5/00

    Abstract: An apparatus for outputting an audio signal with improved sound quality is provided. The apparatus includes a modulation and amplification unit for pulse modulation and switching amplification of an input audio signal and generating an amplified signal which corresponds to the input audio signal; and a vacuum tube amplification unit for inputting a vacuum tube signal generated by attenuating the amplified signal and adding harmonics of a vacuum tube to the amplified signal, to the modulation and amplification unit to provide a mellow sound.

    Abstract translation: 提供一种用于输出具有改善的音质的音频信号的装置。 该装置包括用于脉冲调制和输入音频信号的开关放大并产生对应于输入音频信号的放大信号的调制和放大单元; 以及真空管放大单元,用于输入通过衰减放大的信号而产生的真空管信号,并将真空管的谐波加到放大的信号上,以便向调制和放大单元提供醇厚的声音。

    ELECTRONIC DEVICE AND METHOD FOR CONTROLLING SAME

    公开(公告)号:US20200310745A1

    公开(公告)日:2020-10-01

    申请号:US16759596

    申请日:2018-10-04

    Abstract: Disclosed is an electronic device. The electronic device comprises: a display; a storage unit for storing an application for integrally controlling a plurality of speakers operating on the basis of different wireless solutions; and a processor for driving the application according to a preset event. The application is capable of providing, through the display, a list containing identification information for the plurality of speakers, and providing, through the display, a UI screen including a function which is commonly provided to the different wireless solutions when one of the plurality of speakers is selected.

    ELECTRONIC DEVICE AND CONTROL METHOD THEREOF
    14.
    发明申请

    公开(公告)号:US20190332345A1

    公开(公告)日:2019-10-31

    申请号:US16319545

    申请日:2017-06-27

    Abstract: An electronic device is disclosed. The electronic device comprises: a communicator for communicating with a server storing information on a plurality of short clips and storing keywords by the plurality of short clips; an outputter; an inputter; and a processor which, when a voice uttered by a user is received via the inputter, transmits a short clip request signal to the server, on the basis of a keyword included in the received uttered voice and information on content outputted from the outputter, and outputs a short clip via the outputter, on the basis of information on the short clip received from the server in response to the request signal.

    ACOUSTIC OUTPUT DEVICE AND CONTROL METHOD THEREOF

    公开(公告)号:US20180007468A1

    公开(公告)日:2018-01-04

    申请号:US15606646

    申请日:2017-05-26

    Abstract: An acoustic output device and a control method thereof are provided. The acoustic output device includes: at least one first speaker configured to output a first sound range; a plurality of second speakers configured to output a second sound range that is different from the first sound range; a first crossover circuit connected to the first speaker and one of the plurality of second speakers; a second crossover circuit connected to the first speaker and another of the plurality of second speakers; and a processor configured to control the first and second crossover circuits to provide acoustic signals to the first speaker and the plurality of second speakers, wherein a frequency band of an acoustic signal provided to the first speaker connected to the first crossover circuit is at least partially different from a frequency band of an acoustic signal provided to the first speaker connected to the second of crossover circuit, and wherein a frequency band of an acoustic signal provided to the one of the plurality of second speakers connected to the second crossover circuit is at least partially different from a frequency band of an acoustic signal provided to the other of the plurality of second speakers connected to the second of crossover circuit.

    AUDIO DEVICE AND OUTPUT METHOD THEREOF
    19.
    发明申请
    AUDIO DEVICE AND OUTPUT METHOD THEREOF 有权
    音频设备及其输出方法

    公开(公告)号:US20140064518A1

    公开(公告)日:2014-03-06

    申请号:US14012203

    申请日:2013-08-28

    Abstract: An audio device and an output method thereof are provided. The audio device includes: an envelope detector configured to detect an envelope of an input audio signal; a power supply which includes a linear power supply (LPS) and a switching-mode power supply (SMPS); an amplifier configured to amplify the input audio signal; an output unit configured to output the audio signal amplified by the amplifier; and a controller configured to compare a voltage level of the detected envelope with a preset level, select one of the LPS and the SMPS based on a result of the comparison, and control the power supply to supply power from the selected one of the LPS and the SMPS to the amplifier.

    Abstract translation: 提供音频装置及其输出方法。 音频设备包括:包络检测器,被配置为检测输入音频信号的包络; 包括线性电源(LPS)和开关模式电源(SMPS)的电源; 放大器,配置成放大输入音频信号; 输出单元,被配置为输出由放大器放大的音频信号; 以及控制器,被配置为将检测到的包络的电压电平与预设电平进行比较,基于比较的结果选择LPS和SMPS中的一个,并且控制电源以从LPS中选择的一个提供电力,以及 SMPS到放大器。

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