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    • 57. 发明申请
    • Semiconductor memory apparatus
    • 半导体存储装置
    • US20080054947A1
    • 2008-03-06
    • US11824360
    • 2007-06-29
    • Hoon Choi
    • Hoon Choi
    • G01R25/00H03L7/06
    • H03L7/0812
    • A semiconductor memory apparatus includes a phase comparator configured to compare phases of rising and falling feedback clocks with that of a reference clock, a delay circuit configured to delay the reference clock by a predetermined time based on a comparison result of the phase comparator to thereby generate rising and falling delayed clocks, a clock transmission block configured to invert the rising delayed clock outputted from the delay circuit when the rising and falling feedback clocks have substantially different phases, a duty compensator configured to compensate a duty ratio from outputs of the clock transmitting block to generate a delay locked clock having a compensated duty ratio, and a delay model configured to delay an output and an inverse output of the duty compensator by a modeled delay time respectively to generate the rising and falling feedback clocks.
    • 半导体存储装置包括相位比较器,被配置为将上升和下降反馈时钟的相位与参考时钟的相位进行比较;延迟电路,被配置为基于相位比较器的比较结果将参考时钟延迟预定时间,由此产生 上升和下降延迟时钟,时钟传输块,配置为当上升和下降反馈时钟具有实质上不同的相位时,反相从延迟电路输出的上升延迟时钟;配置为补偿占空比与时钟发送块的输出 以产生具有补偿占空比的延迟锁定时钟,以及延迟模型,被配置为分别延迟占空比补偿器的输出和反相输出模拟延迟时间以产生上升和下降反馈时钟。
    • 59. 发明申请
    • Liquid crystal display and method of adjusting brightness for the same
    • 液晶显示和调整亮度的方法相同
    • US20070285379A1
    • 2007-12-13
    • US11655257
    • 2007-01-19
    • Jun-ho JungHanfeng ChenChang-wan HongYung-jun ParkJun-ho SungHoon ChoiKi-bum SeongHyung-rae Kim
    • Jun-ho JungHanfeng ChenChang-wan HongYung-jun ParkJun-ho SungHoon ChoiKi-bum SeongHyung-rae Kim
    • G09G3/36
    • G09G3/342G09G3/3611G09G2320/0247G09G2320/0261G09G2320/0646G09G2320/0653G09G2320/066G09G2330/021G09G2360/16
    • A liquid crystal display (LCD) and method of adjusting brightness for the LCD are provided. The LCD includes a light emitter including a plurality of luminescent bodies which are divided into a predetermined number of partial areas, a backlight driver connected to the light emitter to control the brightness of each of the partial areas of the light emitter, and a controller for calculating a representative value for adjusting the brightness of each of the partial areas of the light emitter in accordance with an input image signal and outputting the representative value as a brightness adjustment signal for adjusting the brightness of each of the partial areas to the backlight driver. Thus, the brightness of each of partial areas of a backlight can be adjusted in accordance with the input image signal to improve a contrast ratio. Also, a representative value to be used for adjusting the brightness of each of the partial areas can be lowered by a predetermined ratio to effectively reduce power needed for lighting the backlight. Also, light loss and light gain occurring between neighboring partial areas can be compensated to improve the contrast ratio, and image artifacts can be reduced.
    • 提供液晶显示器(LCD)和调节LCD亮度的方法。 LCD包括:发光体,其包括被划分成预定数量的部分区域的多个发光体;连接到发光体的背光驱动器,用于控制发光体的每个部分区域的亮度;以及控制器, 根据输入图像信号,计算用于调整发光体的每个部分区域的亮度的代表值,并将该代表值作为用于调节每个部分区域的亮度的亮度调节信号输出到背光驱动器。 因此,可以根据输入图像信号来调整背光源的每个部分区域的亮度,以提高对比度。 此外,可以以预定比例降低用于调节每个部分区域的亮度的代表值,以有效降低照明背光所需的功率。 此外,可以补偿在相邻部分区域之间发生的光损失和光增益以改善对比度,并且可以减少图像伪影。