Distributed PWM halftoning unit and printer
    2.
    发明授权
    Distributed PWM halftoning unit and printer 失效
    分布式PWM半色调单元和打印机

    公开(公告)号:US06191868B1

    公开(公告)日:2001-02-20

    申请号:US09146348

    申请日:1998-09-03

    IPC分类号: H04N152

    CPC分类号: H04N1/4058

    摘要: In a halftoning unit of a laser printer and the like, a high speed, high density and high gradations halftoning is realized by multi-value implementation by clustered dot concentrated dither halftoning (known as a sub-matrix method) and PWM distributing gradation among the plurality of halftone dots with a small memory and circuit. For this purpose, the value of the difference between an input gradation value ni and a threshold value nc, &Dgr;n=ni−nc, is shortened within a range of 0 to &Dgr;h and the lower s bit of &Dgr;h is removed by a round-down or round-up process. Meanwhile, a threshold array is generated from an extended threshold pattern obtained by combining threshold patterns of 2s whose threshold interval is &Dgr;h, i.e. &Dgr;Ah×K, &Dgr;h×K+1, . . . , &Dgr;×K+2(s−1). Thereby, a halftone dot dither process in which the PWM gradation increases distributively among the 2s dots may be realized with a small scale memory and circuit.

    摘要翻译: 在激光打印机等的半色调单元中,通过集群点集中抖动半色调(称为子矩阵法)的多值实现和PWM分配灰度等级来实现高速,高密度和高等级的半色调 多个具有小存储器和电路的半色调点。 为此,输入灰度值ni和阈值nc之间的差值DELTAn = ni-nc在0到DELTAh的范围内缩短,并且通过向下舍入来去除DELTAh的较低s位 或综合处理。 同时,通过组合其阈值间隔为DELTAh的2s的阈值模式(即DELTAAhxK,DELTAhxK + 1)获得的扩展阈值模式来生成阈值阵列。 。 。 ,DELTAxK + 2(s-1)。 由此,可以利用小尺度的存储器和电路来实现其中PWM等级在2s点之间分布增加的半色调点抖动处理。

    LED Lighting Device And LCD Device Using The Same
    3.
    发明申请
    LED Lighting Device And LCD Device Using The Same 有权
    LED照明装置及其使用的LCD装置

    公开(公告)号:US20090190065A1

    公开(公告)日:2009-07-30

    申请号:US12418853

    申请日:2009-04-06

    摘要: An LED lighting device can compensate a brightness change and a color change caused by a temperature change and exhibit an in-plane uniform luminance and color. A lighting device includes: at least one line connected in parallel, a constant voltage source for applying a constant voltage to the line, an ON/OFF controller, and a current detector for measuring a value of current flowing in the line. The line is formed by one or more light-emitting diodes and a switch for turning ON/OFF the current flowing in the light emitting diodes connected in series. According to the current value of each of the lines measured by the current detector, the ON/OFF controller controls the ON/OFF period of the switch of each of the lines.

    摘要翻译: LED照明装置可以补偿由温度变化引起的亮度变化和颜色变化,并且具有平面内均匀的亮度和颜色。 照明装置包括:并联连接的至少一条线路,用于向线路施加恒定电压的恒定电压源,ON / OFF控制器和用于测量在该线路中流动的电流值的电流检测器。 该线由一个或多个发光二极管和用于使串联连接的发光二极管中流动的电流接通/断开的开关形成。 根据由电流检测器测量的每行的当前值,ON / OFF控制器控制每行的开关的ON / OFF周期。

    Image signal processing method, image signal processing device, and image signal processing system
    4.
    发明授权
    Image signal processing method, image signal processing device, and image signal processing system 失效
    图像信号处理方法,图像信号处理装置和图像信号处理系统

    公开(公告)号:US07369284B1

    公开(公告)日:2008-05-06

    申请号:US10257253

    申请日:2000-04-12

    IPC分类号: H04N1/46

    CPC分类号: H04N9/045

    摘要: A color image signal processing device having a high resolution and excellent color reproducibility even though the device comprises a one-chip color sensor. The data format for transmitting image information inputted through an input unit to an output unit includes information on the arrangement of the color filter of the input unit and on the characteristics of the color filter.

    摘要翻译: 即使该装置包括单芯片彩色传感器,也具有高分辨率和优异的色彩再现性的彩色图像信号处理装置。 用于将通过输入单元输入的图像信息发送到输出单元的数据格式包括关于输入单元的滤色器的布置以及滤色器的特性的信息。

    Display device and display method of electric power system information

    公开(公告)号:US10090704B2

    公开(公告)日:2018-10-02

    申请号:US14377021

    申请日:2012-02-21

    IPC分类号: G06T11/20 H02J13/00

    摘要: A display device of electric power system information comprises a display unit including a display screen; and a screen display control unit for controlling the display unit. The display screen includes a display area that is divided into a plurality of display cells each of which has a mapping function for showing relative positional relations. The display unit includes an electric power system diagram display function unit for displaying an electric system diagram that embodies the state of an electric power system being a monitoring target, a mapping item display function unit for displaying mapping display items in the background of the electric power system diagram using the display cells, and a menu display function for displaying menus and icons, which are used for selecting the mapping display items, on the display screen, and for accepting selection operations to the menus and icons on the display cells on the display screen. The mapping display items represent information of state quantities regarding the state of the electric power system being the monitoring target, and the mapping display items are displayed per display cell with different colors in accordance with the corresponding values of state quantities.

    Display apparatus with arrangement to decrease quantity of backlight and increase transmittance of the display panel
    9.
    发明授权
    Display apparatus with arrangement to decrease quantity of backlight and increase transmittance of the display panel 有权
    具有降低背光量并增加显示面板的透射率的装置的显示装置

    公开(公告)号:US08004545B2

    公开(公告)日:2011-08-23

    申请号:US11869765

    申请日:2007-10-10

    IPC分类号: G09G5/10 G09G3/36

    摘要: A display apparatus is arranged to have pixels, each of which has a RGBW (Red, Green, Blue and White) wavelength distribution characteristic, located two-dimensionally. The display apparatus includes an input unit for inputting a signal for controlling a using ratio of a W signal, a color signal converting unit for calculating a RGBW driving signal from a RGB input signal and the W using ratio. The RGBW signal is calculated so as to control the contribution of the W signal to the image quality. The display apparatus switches the display from the contrast-highlighted display in a relatively bright lighting condition to the color-reproducibility-highlighted display in a relatively gloomy lighting condition.

    摘要翻译: 显示装置被布置成具有像素,其每一个都具有二维位置的RGBW(红,绿,蓝,白)波长分布特性。 显示装置包括输入单元,用于输入用于控制W信号的使用比率的信号,用于从RGB输入信号计算RGBW驱动信号的颜色信号转换单元和W使用率。 计算RGBW信号,以便控制W信号对图像质量的贡献。 显示装置在相对较亮的照明条件下将显示从对比度突出的显示切换到相对阴暗的照明条件下的颜色重现性显示的显示。

    Image signal display apparatus
    10.
    发明申请
    Image signal display apparatus 失效
    图像信号显示装置

    公开(公告)号:US20060125771A1

    公开(公告)日:2006-06-15

    申请号:US11281385

    申请日:2005-11-18

    IPC分类号: G09G3/36

    摘要: A liquid crystal display apparatus includes a liquid crystal display panel having a liquid crystal layer held between a pair of substrates; and a light source, a whose brightness of which is controllable, wherein the liquid crystal display apparatus further includes a unit for generating an image signal with a signal for controlling the liquid crystal layer configured in a display area of a frame-based pixel configuration and with a signal for controlling the light source configured in a blanking interval of the frame-based pixel configuration.

    摘要翻译: 一种液晶显示装置,包括:液晶显示面板,其具有保持在一对基板之间的液晶层; 以及其亮度可控的光源,其中所述液晶显示装置还包括用于产生图像信号的单元,所述单元用于控制在基于帧的像素配置的显示区域中配置的液晶层的信号,以及 具有用于控制在基于帧的像素配置的消隐间隔中配置的光源的信号。