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    • 7. 发明授权
    • Method and apparatus for enhancing peak luminance on plasma display panel
    • 用于提高等离子体显示面板上的峰值亮度的方法和装置
    • US07023406B1
    • 2006-04-04
    • US09567344
    • 2000-05-09
    • Keiji NunomuraYoshio SanoToshiyuki AkiyamaHachiro Yamada
    • Keiji NunomuraYoshio SanoToshiyuki AkiyamaHachiro Yamada
    • G09G3/28
    • G09G3/2944G09G3/2022G09G2320/0233G09G2330/021G09G2360/16
    • To provide a plasma display device which implements a peak luminance higher than prior art, reduces the power dissipation, improves the smoothness of gradation display, and conducts clear display suitable especially for TV display. By setting a plurality of APL levels according to the average value of the scene brightness, and by shortening a sustaining pulse period and increasing the number of sustaining pulses of each sub-field in APL levels having small APL, the peak luminance is raised. Further, by making the sustaining pulse period long in APL levels having large APL requiring large discharge light emission power, the light emission efficiency is improved and the maximum power dissipation is reduced. The luminance distribution in the scene when the APL level is small is detected. On the basis of that information, setting of the number of sustaining pulses and the sustaining pulse period is changed in the same APL level. As a result, the peak luminance is increased, and the gradation smoothness in the dark scene is improved.
    • 为了提供实现比现有技术更高的峰值亮度的等离子体显示装置,降低了功率消耗,提高了灰度显示的平滑度,并且进行了特别适用于电视显示的清晰显示。 通过根据场景亮度的平均值设置多个APL电平,并且通过缩短维持脉冲周期并增加具有小APL的APL电平中的每个子场的维持脉冲数,峰值亮度升高。 此外,通过使需要大放电发光功率的APL大的APL电平的持续脉冲期间长,能够提高发光效率,降低最大功耗。 检测到当APL电平小时场景中的亮度分布。 基于该信息,维持脉冲数和持续脉冲周期的设定在相同的APL电平中变化。 结果,峰值亮度增加,并且暗场景中的灰度平滑度得到改善。
    • 9. 发明授权
    • Signal read-out apparatus for solid-state imager
    • 固态成像仪的信号读出装置
    • US4805025A
    • 1989-02-14
    • US13542
    • 1987-02-11
    • Toshiyuki AkiyamaNaoki OzawaTakeshi OginoKenji Takahashi
    • Toshiyuki AkiyamaNaoki OzawaTakeshi OginoKenji Takahashi
    • G06T1/00G11C19/28G11C27/04H04N5/335H04N5/363H04N5/372H04N5/374H04N5/378H04N3/14
    • H04N5/2173G11C19/285G11C27/04
    • A signal read-out apparatus for a solid-state imager employing CCDs (charge-coupled devices) and CPDs (charge priming devices) includes a clamp circuit for eliminating reset noise generated in an amplifier provided at the output of the imager. For eliminating thermal noise of high frequency generated in the amplifier and incapable of being eliminated by the clamp circuit, a low-pass filter is provided in precedence to the clamp circuit. The frequency band of the low-pass filter is not higher than 1.5 times the frequency of a clock pulse signal for driving the solid-state imager. In place of providing the low-pass filter as a discrete component, a low-pass filter having the same characteristics may be constituted by a capacitance of the capacitor and ON-resistance of a switch incorporated in the clamp circuit. The capacitance of the capacitor in the clamp circuit is set to a value greater than the input electrostatic capacity of the amplifier.
    • 用于采用CCD(电荷耦合器件)和CPD(电荷引发器件)的固态成像器的信号读出装置包括钳位电路,用于消除在成像器的输出处提供的放大器中产生的复位噪声。 为了消除在放大器中产生的不能被钳位电路消除的高频的热噪声,优先提供低通滤波器到钳位电路。 低通滤波器的频带不高于用于驱动固态成像器的时钟脉冲信号的频率的1.5倍。 代替将低通滤波器提供为分立元件,具有相同特性的低通滤波器可以由电容器的电容和并入钳位电路中的开关的导通电阻构成。 钳位电路中的电容器的电容被设置为大于放大器的输入静电容量的值。