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    • 2. 发明授权
    • Horizontal deflection circuit for a monitor
    • 水平偏转电路用于显示器
    • US6091213A
    • 2000-07-18
    • US79197
    • 1998-05-15
    • Tae-Gil Park
    • Tae-Gil Park
    • H04N3/233H04N3/27G09G1/04H01J29/56H01J29/70
    • H04N3/27H04N3/2335
    • A horizontal deflection circuit for a monitor is disclosed. The horizontal deflection circuit for a monitor includes a microprocessor for determining a mode of the monitor according to frequencies of the horizontal sync signal Hs and a vertical sync signal Vs such as VGA(video graphic adapter), and SVGA(super VGA) and for generating a control signal to generate a horizontal picture size signal and a distortion correcting signal of parabolic waveform corresponding to the determined mode; a distortion correcting signal generating unit for superimposing the distortion correcting signal and the horizontal picture size signal and for outputting a superimposed signal; a distortion correcting signal control unit for controlling an amplitude of the superimposed signal in accordance with an amplifying signal; a PWM signal generating unit for pulse-width modulating an output signal of the distortion correcting signal control unit and for outputting a PWM signal; a buffer for buffering the PWM signal; and a distortion correcting signal output unit for amplifying the PWM signal in accordance with an externally-supplied voltage source B+ and for supplying the amplifying signal to the horizontal deflection coil.
    • 公开了一种用于监视器的水平偏转电路。 用于监视器的水平偏转电路包括微处理器,用于根据水平同步信号Hs和垂直同步信号Vs(诸如VGA(视频图形适配器))和SVGA(超级VGA)的频率来确定监视器的模式,并且用于产生 用于产生水平图像尺寸信号的控制信号和对应于所确定的模式的抛物线波形的失真校正信号; 失真校正信号生成单元,用于叠加失真校正信号和水平图像尺寸信号,并输出叠加信号; 失真校正信号控制单元,用于根据放大信号控制叠加信号的幅度; PWM信号生成单元,用于对所述失真校正信号控制单元的输出信号进行脉宽调制,并输出PWM信号; 用于缓冲PWM信号的缓冲器; 以及失真校正信号输出单元,用于根据外部提供的电压源B +放大PWM信号,并将放大信号提供给水平偏转线圈。
    • 3. 发明授权
    • Circuit for adjusting a horizontal center of a raster for a monitor
    • 用于调整监视器的光栅水平中心的电路
    • US06091212A
    • 2000-07-18
    • US84972
    • 1998-05-28
    • Tae-Gil Park
    • Tae-Gil Park
    • H04N3/22H04N3/227G09G1/04H01J29/56H01J29/70
    • H04N3/227H04N3/22
    • Disclosed is a circuit for adjusting a horizontal center of a raster displayed on a monitor CRT, which includes a current generating circuit which can control an amount of a direct current flowing through a horizontal deflection yoke of the monitor based on a control voltage, a first voltage, and a second voltage. A control part generates the control voltage in response to a center adjustment signal. A voltage generating circuit generates the first and second voltages, respectively. The first voltage has a higher potential than that of a B.sup.+ voltage which is applied to the horizontal deflection yoke, and the second voltage has a lower potential than that of the B.sup.+ voltage. The current generating circuit either generates a first current flowing into the horizontal deflection yoke to increase the direct current or a second current flowing out therefrom to decrease the direct current, such that the horizontal center of the raster is controlled.
    • 公开了一种用于调节显示在监视器CRT上的光栅的水平中心的电路,其包括电流产生电路,该电流产生电路可以基于控制电压控制流过监视器的水平偏转线圈的直流电流量;第一 电压和第二电压。 控制部分响应于中心调节信号产生控制电压。 电压产生电路分别产生第一和第二电压。 第一电压具有比施加到水平偏转线圈的B +电压更高的电位,并且第二电压具有比B +电压低的电位。 电流产生电路或者产生流入水平偏转线圈的第一电流以增加直流电流或从其流出的第二电流以减小直流电流,从而控制光栅的水平中心。