公开(公告)号：KR100697418B1

公开(公告)日：2007-03-20

申请号：KR1020050097619

申请日：2005-10-17

Applicant: 엘지전자 주식회사

Inventor： 이영우

IPC: H04R3/00 ,  H04R5/04 ,  H04R9/06

CPC classification number: H04R3/007 ,  H03G2201/208 ,  H04R5/04 ,  H04R9/06

Abstract: An apparatus and a method for controlling a driving voltage of a speaker are provided to control the amplitude of a secondary voltage inputted to the speaker by controlling a duty cycle of a switching device to switch a primary voltage to the secondary part where the primary voltage is obtained by rectifying an AC voltage inputted from an external power supply. In an apparatus for controlling a driving voltage of a speaker, a primary power supply part(210) converts an AC voltage to a DC voltage. A secondary power supply part(230) receives a voltage supplied from the primary power supply part as an input voltage, and outputs a first output voltage to be fed back to the primary power supply part and a second output voltage supplied to the speaker. A main control unit(250) outputs a switching on signal to control feedback of the first output voltage from the secondary power supply part, when a power supply voltage is supplied to the speaker. A duty control unit(260) is arranged on a feedback path, and controls a duty of a switching device of the primary power supply part on the basis of the switching on signal output of the main control unit.

Abstract translation: 提供了一种用于控制扬声器的驱动电压的装置和方法，以通过控制开关装置的占空比来将初级电压切换到初级电压为次级的次级部分来控制输入到扬声器的次级电压的幅度 通过整流从外部电源输入的AC电压获得。 在用于控制扬声器的驱动电压的装置中，主电源部（210）将AC电压转换为DC电压。 次级电源部件（230）接收从主电源部件提供的电压作为输入电压，并输出要反馈到主电源部分的第一输出电压和提供给扬声器的第二输出电压。 当向扬声器提供电源电压时，主控单元（250）输出开关信号以控制来自次电源部分的第一输出电压的反馈。 占空比控制单元（260）布置在反馈路径上，并且基于主控制单元的接通信号输出来控制主电源部分的开关装置的占空比。

公开(公告)号：KR100792675B1

公开(公告)日：2008-01-09

申请号：KR1020070082133

申请日：2007-08-16

Applicant: 조재명 ,  이승훈

Inventor： 조재명 ,  이승훈

IPC: H04S1/00 ,  H04R5/04 ,  H04R3/12 ,  G11B20/10

CPC classification number: H04S1/007 ,  G11B20/10 ,  H03G2201/208 ,  H04R3/12 ,  H04R5/04 ,  H04R2420/07 ,  H04R2420/09

Abstract: An apparatus and a method of a two channel reception terminal are provided to continuously supply smooth power to each device by controlling the power with a PWM(Pulse Width Modulation) method to minimize a frequency, thereby preventing unnecessary power consumption. A PWM(Pulse Width Modulation) power control unit controls power with a PWM method to minimize a frequency and therefore continuously supplies the smooth power to each device to prevent unnecessary power consumption. An RF(Radio Frequency) output unit receives a wake up signal from a two channel transmission terminal(200) to wake up the operation of an audio module, and outputs the operation signal to a two channel reception channel(100). An RF two channel unit performs the data communication with a peripheral device in a two channel type of an ISM(Industrial Scientific Medical) band through the control of a CPU(Central Processing Unit). A USB(Universal Serial Bus) and audio selecting unit outputs the data stored in a USB memory unit or an audio signal output from an electronic appliance except the USB memory unit when a signal indicating the connection of a USB is checked in the two channel transmission terminal. An LCD(Liquid Crystal Display) display unit displays the state of the two channel 1:N reception terminal through an LCD display window. The CPU controls the change of a channel to prevent the collision between the channels when performing the communication with the peripheral device in the two channel type of the ISM band. A key pad control unit controls the commands inputted from the button keys of the two channel reception terminal. A PWM audio output unit outputs the high sound quality of digital audio by converting PCM(Pulse Code Modulation) audio data to PWM audio data.

Abstract translation: 提供双通道接收终端的装置和方法，通过使用PWM（脉宽调制）方法来控制功率，以使频率最小化，从而连续地向每个设备提供平滑的功率，从而防止不必要的功耗。 PWM（脉冲宽度调制）功率控制单元通过PWM方式来控制功率以最小化频率，从而不间断地为每个设备供电，以防止不必要的功耗。 RF（射频）输出单元接收来自双通道传输终端（200）的唤醒信号，以唤醒音频模块的操作，并将操作信号输出到双频道接收频道（100）。 RF两通道单元通过CPU（中央处理单元）的控制，与ISM（Industrial Scientific Medical）的两通道类型的外围设备进行数据通信。 USB（通用串行总线）和音频选择单元输出存储在USB存储器单元中的数据或者除了USB存储器单元之外从电子设备输出的音频信号，当在两个通道传输中检查到指示USB的连接的信号时 终奌站。 LCD（液晶显示器）显示单元通过LCD显示窗口显示双通道1：N接收端的状态。 当在两通道类型的ISM频带中执行与外围设备的通信时，CPU控制信道的改变以防止信道之间的冲突。 键盘控制单元控制从两声道接收终端的按钮键输入的命令。 PWM音频输出单元通过将PCM（脉冲编码调制）音频数据转换为PWM音频数据来输出数字音频的高音质。