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    • 2. 发明授权
    • Image display apparatus and method thereof
    • 图像显示装置及其方法
    • US06894670B2
    • 2005-05-17
    • US09681534
    • 2001-04-24
    • Akihiro FunakoshiToshio Shimizu
    • Akihiro FunakoshiToshio Shimizu
    • G02F1/133G09G3/20G09G3/36
    • G09G3/3648G09G3/2018G09G3/2051G09G3/2074G09G2320/0276
    • A liquid crystal display apparatus for displaying an image on a liquid crystal cell through a liquid crystal driver driven by a predetermined number of bits by inputting image data in which one pixel is represented with a plurality of sub-pixels. The liquid crystal display apparatus includes: memory for storing information about an offset for converting gray level coordinates of a gamma characteristic spaced evenly according to the number of bits into gray level coordinates spaced unevenly; a gray level adjustment portion for performing a calculation on particular input sub-pixel data based on information about the offset stored in the memory; and a pseudo-gray-level-expansion portion for applying pseudo gray level expansion to the sub-pixel data calculated by the gray level adjustment portion. The sub-pixel data to which the pseudo gray level expansion is applied by the pseudo-gray-level-expansion portion is supplied to the liquid crystal driver to display the image on the liquid crystal cell.
    • 一种液晶显示装置,用于通过输入以多个子像素表示一个像素的图像数据,通过由预定位数驱动的液晶驱动器在液晶单元上显示图像。 液晶显示装置包括:存储器,用于存储关于偏移的信息,用于将根据位数均匀地间隔的伽马特性的灰度坐标转换成不均匀间隔的灰度级坐标; 灰度级调整部分,用于基于存储在存储器中的关于偏移的信息执行对特定输入子像素数据的计算; 以及用于将伪灰度级扩展应用于由灰度级调整部分计算出的子像素数据的伪灰度级扩展部分。 将通过伪灰度级扩展部分施加伪灰度级扩展的子像素数据提供给液晶驱动器,以在液晶单元上显示图像。
    • 5. 发明授权
    • Apparatus and method for driving liquid crystal
    • 液晶驱动装置及方法
    • US5771030A
    • 1998-06-23
    • US380534
    • 1995-01-30
    • Hidefumi SuzukiAkihiro FunakoshiIsamu Miwa
    • Hidefumi SuzukiAkihiro FunakoshiIsamu Miwa
    • G02F1/133G09G3/20G09G3/36H03M1/08H04N3/12H04N5/66H04N7/00
    • G09G3/2011G09G3/3611H04N3/127G09G2320/02
    • To drive a liquid crystal panel without producing flickering or noise on a screen, an adder circuit 26 adds the noise component of the analog signal detected in a filter 24 to a reference voltage from a power supply 16, and a phase adjustment circuit 28 adjusts the phase of the reference voltage to which the noise component was added. A circuit 12 holds the analog signal and outputs it to comparators 14.sub.1 to 14.sub.n. The reference voltage from the circuit 28 is divided in resistors 18.sub.1 to 18.sub.n+1 and output to comparators 14.sub.1 to 14.sub.n as threshold voltages TV.sub.1 to TV.sub.n. The comparator 14 compares the input analog signal to the voltage TV, and outputs a predetermined signal to an encoder 20 if the analog signal is greater than the voltage TV. The encoder 20 converts the signal from the comparator 14 to a digital signal and applies it to the electrode of a liquid crystal panel.
    • 为了驱动液晶面板而不在屏幕上产生闪烁或噪声,加法器电路26将在滤波器24中检测的模拟信号的噪声分量与来自电源16的参考电压相加,并且相位调整电路28调整 添加噪声分量的参考电压的相位。 电路12保持模拟信号并将其输出到比较器141至14n。 来自电路28的参考电压被分成电阻器181至18n + 1,并作为阈值电压TV1至TVn输出到比较器141至14n。 比较器14将输入的模拟信号与电压TV进行比较,如果模拟信号大于电压TV,则向编码器20输出预定的信号。 编码器20将来自比较器14的信号转换为数字信号,并将其施加到液晶面板的电极。
    • 6. 发明授权
    • Apparatus and method for driving liquid crystal
    • 液晶驱动装置及方法
    • US5682176A
    • 1997-10-28
    • US757650
    • 1996-11-25
    • Haruhiro MatinoAkihiro FunakoshiIsamu Miwa
    • Haruhiro MatinoAkihiro FunakoshiIsamu Miwa
    • G02F1/133G09G3/20G09G3/36
    • G09G3/2011G09G3/3685
    • In order to drive a liquid crystal panel without causing flickering or noise on a screen, an analog signal (R) is input to sample and hold circuits SH through an amplifier 14. When the first half of the clock signals is input, the voltage values of the analog signal which are held in the corresponding circuits SH1 . . . SH(n/2) are added up in an adder 16, divided by n/2 in a divider 18, and output to a circuit SH(n/2+1). When the second half of the clock signals is input, the voltage values which are held in the corresponding circuits SH(n/2+2) . . . SH(n+1) are added up in an adder 16', divided (by n/2) in a divider 18', and output to a circuit SH(n+2). The outputs from the circuits SH(n/2+1) and SH(n+2) are summed in an adder 24 and divided by 2 in a divider 26. A driver circuit applies a voltage to the corresponding electrode of a liquid crystal panel according to the output from the divider 26.
    • 为了驱动液晶面板而不会在屏幕上引起闪烁或噪声,输入模拟信号(R)以通过放大器14对电路SH进行采样和保持。当输入第一半的时钟信号时,电压值 保持在相应电路SH1中的模拟信号。 。 。 SH(n / 2)在加法器16中相加,在除法器18中除以n / 2,并输出到电路SH(n / 2 + 1)。 当输入时钟信号的后半部分时,保持在相应电路SH(n / 2 + 2)中的电压值。 。 。 SH(n + 1)被加法器16'相加,分频器18'被分频(乘以n / 2),并输出到电路SH(n + 2)。 电路SH(n / 2 + 1)和SH(n + 2)的输出在加法器24中相加并在除法器26中除以2。驱动电路向液晶面板的对应电极施加电压 根据分配器26的输出。