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    • 1. 发明授权
    • Liquid crystal driving circuit and load driving circuit
    • 液晶驱动电路和负载驱动电路
    • US06806860B2
    • 2004-10-19
    • US09964465
    • 2001-09-28
    • Tetsuya SaitoHironori MinamizakiTetsuro Itakura
    • Tetsuya SaitoHironori MinamizakiTetsuro Itakura
    • G09G336
    • G09G3/3696G09G3/2011G09G3/3688G09G2310/027G09G2330/021G09G2360/16
    • There is disclosed a liquid crystal driving circuit configured to supply an analog voltage in accordance with digital grayscale data to each of a plurality of signal lines, said circuit comprising: a reference voltage generation circuit configured to output analog reference voltages corresponding to each of said digital grayscale data; a plurality of buffer amplifiers configured to individually perform buffering of said respective analog reference voltages; a grayscale mode circuit configured to determine a grayscale number of said digital grayscale data based on a grayscale mode signal supplied from the outside; and an amplifier enable circuit configured to set each of said plurality of buffer amplifiers to an enable state or a disable state based on an output signal of said grayscale mode circuit.
    • 公开了一种液晶驱动电路,其被配置为将数字灰度数据的模拟电压提供给多条信号线中的每条信号线,所述电路包括:参考电压产生电路,被配置为输出对应于每个所述数字 灰度数据; 多个缓冲放大器,被配置为单独地执行所述各个模拟参考电压的缓冲; 灰度模式电路,被配置为基于从外部提供的灰度模式信号来确定所述数字灰度数据的灰度数; 以及放大器使能电路,被配置为基于所述灰度级模式电路的输出信号将所述多个缓冲放大器中的每一个设置为使能状态或禁用状态。
    • 3. 发明授权
    • Amplifier device and LCD device
    • US06411162B1
    • 2002-06-25
    • US09813958
    • 2001-03-22
    • Hironori MinamizakiTetsuro ItakuraTetsuya Saito
    • Hironori MinamizakiTetsuro ItakuraTetsuya Saito
    • H03F345
    • In an amplifier device, a negative output voltage (−) of a differential amplifier stage corresponding to an input signal voltage (Vin) is supplied to the gate of Output transistor M25 for charging electrical charges to Capacitive load (80). A current corresponding to a positive output voltage (+) of the differential amplifier stage is supplied to Node (A) through which the gate of Output transistor M26 for discharging electrical charges from Capacitive load (80) is connected to Constant current source (4). This current becomes a value (Iy+&Dgr;I) according to the voltage (Vin). By changing the gate voltage of Output transistor M26, it enters ON, and the electrical charges are discharged as a current I3 from Capacitive load (80). The voltage (Vin) is converted to a current by Voltage-current converter (1), and Current-voltage converter (2) then converts this current to a voltage. It is thereby possible to increase the driving ability of Output transistor M26 and to perform a response operation at high speed with low power consumption only by changing the current corresponding to the positive output voltage (+) of the differential pair.
    • 4. 发明授权
    • Liquid crystal driving circuit and load driving circuit
    • 液晶驱动电路和负载驱动电路
    • US07358951B2
    • 2008-04-15
    • US10895320
    • 2004-07-21
    • Tetsuya SaitoHironori MinamizakiTetsuro Itakura
    • Tetsuya SaitoHironori MinamizakiTetsuro Itakura
    • G09G3/36
    • G09G3/3696G09G3/2011G09G3/3688G09G2310/027G09G2330/021G09G2360/16
    • There is disclosed a liquid crystal driving circuit configured to supply an analog voltage in accordance with digital grayscale data to each of a plurality of signal lines, said circuit comprising: a reference voltage generation circuit configured to output analog reference voltages corresponding to each of said digital grayscale data; a plurality of buffer amplifiers configured to individually perform buffering of said respective analog reference voltages; a grayscale mode circuit configured to determine a grayscale number of said digital grayscale data based on a grayscale mode signal supplied from the outside; and an amplifier enable circuit configured to set each of said plurality of buffer amplifiers to an enable state or a disable state based on an output signal of said grayscale mode circuit.
    • 公开了一种液晶驱动电路,其被配置为将数字灰度数据的模拟电压提供给多条信号线中的每条信号线,所述电路包括:参考电压产生电路,被配置为输出对应于每个所述数字 灰度数据; 多个缓冲放大器,被配置为单独地执行所述各个模拟参考电压的缓冲; 灰度模式电路,被配置为基于从外部提供的灰度模式信号来确定所述数字灰度数据的灰度数; 以及放大器使能电路,被配置为基于所述灰度级模式电路的输出信号将所述多个缓冲放大器中的每一个设置为使能状态或禁用状态。
    • 8. 发明申请
    • IMAGE PROCESSING CIRCUIT AND LIQUID CRYSTAL DISPLAY APPARATUS
    • 图像处理电路和液晶显示装置
    • US20070269118A1
    • 2007-11-22
    • US11749827
    • 2007-05-17
    • Hisashi SasakiHironori MinamizakiHaruhiko Okumura
    • Hisashi SasakiHironori MinamizakiHaruhiko Okumura
    • G06K9/36
    • G09G3/3688G09G3/3611G09G2330/06G09G2340/02G09G2340/06G09G2350/00G09G2360/16G09G2360/18H04N19/124H04N19/13H04N19/14H04N19/186H04N19/196H04N19/423H04N19/426H04N19/428H04N19/70
    • An image processing circuit has a color information converter configured to convert image data including a plurality of color information into luminance data and color difference data, an activity detector whether amount of activity predetermined according to differences between the luminance data in a plurality of pixels in each of pixel blocks and differences between the color difference data in the plurality of pixels exceeds a predetermined first threshold value for each pixel block including a plurality of pixels adjacent to each other, and a encoding unit configured to perform a first encoding process by generating m (m is an integer of three or larger) representative values corresponding to the luminance data and the color difference data in the plurality of pixels in the pixel block that the activity detector determines to exceed the first threshold value, and perform a second encoding process by generating n (n is an integer of two or more and the integer larger than m) representative values corresponding to the luminance data and the color difference data in the plurality of pixels in the pixel block that the activity detector determines not to exceed the first threshold value, to generate encoded data.
    • 图像处理电路具有颜色信息转换器,被配置为将包括多个颜色信息的图像数据转换为亮度数据和色差数据,活动检测器,根据每个中的多个像素中的亮度数据之间的差异来预定的活动量 的像素块和所述多个像素中的色差数据之间的差异对于包括彼此相邻的多个像素的每个像素块超过预定的第一阈值,以及编码单元,被配置为通过产生m( m是三个以上的整数)代表值,其对应于活动检测器判定为超过第一阈值的像素块中的多个像素中的亮度数据和色差数据,并且通过生成 n(n是2以上的整数,大于m的整数)表示 对应于活动检测器确定不超过第一阈值的像素块中的多个像素中的亮度数据和色差数据的相关值,以生成编码数据。
    • 9. 发明授权
    • Liquid crystal drive device, LCD apparatus and drive method
    • 液晶驱动装置,液晶装置及驱动方式
    • US08188993B2
    • 2012-05-29
    • US12405410
    • 2009-03-17
    • Aira HottaHaruhiko OkumuraHironori Minamizaki
    • Aira HottaHaruhiko OkumuraHironori Minamizaki
    • G06F3/038G09G3/36G09G5/00G06K9/40
    • G09G3/3611G09G2320/0261G09G2340/16H04N5/208
    • A liquid crystal drive device includes: a frame memory retaining image information of a second frame immediately preceding a first frame; a first calculator calculating a first difference between image information of the first frame and the image information of the second frame; an edge enhancement processor performing edge enhancement processing of the first frame for each of pixels of the first frame and outputting edge enhancement image information; a selector selecting and outputting the edge enhancement image information or image information of the first frame; a second calculator calculating a second difference between an output of the selector and the image information of the second frame; an enhancement coefficient calculator multiplying an output of the second calculator by an enhancement correction coefficient; and a third calculator calculating sum information by adding together an output of the enhancement coefficient calculator and the image information of the second frame.
    • 液晶驱动装置包括:帧存储器,其保持紧接在第一帧之前的第二帧的图像信息; 计算第一帧的图像信息和第二帧的图像信息之间的第一差异的第一计算器; 边缘增强处理器对第一帧的每个像素执行第一帧的边缘增强处理并输出边缘增强图像信息; 选择器,选择并输出第一帧的边缘增强图像信息或图像信息; 计算所述选择器的输出和所述第二帧的图像信息之间的第二差的第二计算器; 增强系数计算器将所述第二计算器的输出乘以增强校正系数; 以及第三计算器,通过将所述增强系数计算器的输出和所述第二帧的图像信息相加在一起来计算和信息。