Liquid crystal display device and method for driving the same
    1.
    发明授权
    Liquid crystal display device and method for driving the same 失效
    液晶显示装置及其驱动方法

    公开(公告)号:US5805130A

    公开(公告)日:1998-09-08

    申请号:US425469

    申请日:1995-04-20

    IPC分类号: G09G3/36

    CPC分类号: G09G3/3625

    摘要: In a liquid crystal display device having a simple matrix liquid crystal display panel including a plurality of scanning electrodes disposed in parallel with each other and a plurality of data electrodes disposed in parallel with each other so as to cross the scanning electrodes, the scanning electrodes are divided into a predetermined number of sub-groups, and each sub-group is successively driven by utilizing an orthogonal function. For a selection, a signal having an electric potential of .+-.Vr, which is a selection pulse string according to the orthogonal function, is applied to the respective scanning electrodes as a scanning electrode driving signal. For a non-selection, a signal having an electric potential of 0 is applied to the respective scanning electrodes as the scanning electrode driving signal. On the other hand, a data electrode driving signal having an electric potential proportional to a sum of products of a display pattern and the scanning electrode driving signal is applied to the respective data electrodes. A bias value "A", which is a proportional constant therefor, is set in a predetermined range. Thus, a uniform display with a high contrast enabling a fast response can be realized while suppressing a frame response phenomenon and display inconsistencies.

    摘要翻译: 在具有包括彼此平行设置的多个扫描电极的简单矩阵型液晶显示面板和与扫描电极交叉的并列配置的多个数据电极的液晶显示装置中,扫描电极 分成预定数量的子组,并且通过利用正交函数连续地驱动每个子组。 对于选择,将作为根据正交函数的选择脉冲串的电位为+/- Vr的信号作为扫描电极驱动信号施加到各个扫描电极。 对于不选择,将具有0的电位的信号作为扫描电极驱动信号施加到各个扫描电极。 另一方面,具有与显示图案和扫描电极驱动信号的乘积之和成比例的电位的数据电极驱动信号被施加到各个数据电极。 将其为其比例常数的偏置值“A”设定在预定范围内。 因此,可以在抑制帧响应现象和显示不一致性的同时,实现具有高对比度的均匀显示,从而实现快速响应。

    Liquid crystal display device and method for driving display device
    2.
    发明授权
    Liquid crystal display device and method for driving display device 失效
    液晶显示装置及驱动显示装置的方法

    公开(公告)号:US5870070A

    公开(公告)日:1999-02-09

    申请号:US725395

    申请日:1996-10-03

    IPC分类号: G02F1/133 G09G3/36

    CPC分类号: G09G3/3625

    摘要: A method for driving a simple matrix type display device includes the steps of: applying a data voltage corresponding to values obtained by an orthogonal transform of input data to the data electrodes; applying a scanning voltage to the scanning electrodes, the scanning voltage corresponding to an orthogonal function used for the orthogonal transform; and reproducing the input data by an orthogonal inverse transform of the data voltage on the display panel, wherein the step of applying the scanning voltage includes the steps of: applying a scanning selection pulse signal having at least two levels to the scanning electrodes as a scanning voltage; and fixing the scanning selection pulse signal to an unselected level during a first period, a second period, or both of the first and second periods, the first period being defined as a period from the beginning of the data output until a predetermined time later in a data voltage output period, and the second period being defined as a period from a predetermined short time before the completion of the data output until the completion of the data output in the data voltage output period.

    摘要翻译: 一种用于驱动简单矩阵型显示装置的方法包括以下步骤:将对应于通过输入数据的正交变换获得的值的数据电压施加到数据电极; 对扫描电极施加扫描电压,对应于用于正交变换的正交函数的扫描电压; 以及通过所述显示面板上的数据电压的正交逆变换来再现所述输入数据,其中所述施加所述扫描电压的步骤包括以下步骤:将具有至少两个级别的扫描选择脉冲信号施加到所述扫描电极作为扫描 电压; 以及在所述第一和第二周期的第一周期,第二周期或两者期间将所述扫描选择脉冲信号固定为未选择的电平,所述第一周期被定义为从所述数据输出的开始到所述预定时间之后的周期 数据电压输出周期,第二周期被定义为在数据输出完成之前的预定短时间到在数据电压输出周期中输出数据完成之间的周期。

    Memory interface circuit and access method
    3.
    发明授权
    Memory interface circuit and access method 失效
    存储器接口电路和访问方式

    公开(公告)号:US5929832A

    公开(公告)日:1999-07-27

    申请号:US609475

    申请日:1996-03-01

    CPC分类号: G09G3/3625

    摘要: The memory interface circuit converts an input data signal into multi-scan data signals used for a multi-scan type liquid crystal display. The memory interface circuit includes: a memory for storing one frame of the input data signal corresponding to the display panel, and a control circuit for controlling write/read operations for the memory so that the input data signal is sequentially written in the memory in a single-scan manner, and that data stored in the memory is read out as first and second multi-scan signals in a multi-scan manner. The control circuit controls timing of read operations so that a read operation for the second multi-scan signal is started a predetermined time after that for the first multi-scan signal is started, the predetermined time being equal to a delay time of a write operation of the input data corresponding to the second portion with respect to that corresponding to the first portion.

    摘要翻译: 存储器接口电路将输入数据信号转换为用于多扫描型液晶显示器的多扫描数据信号。 存储器接口电路包括:存储器,用于存储对应于显示面板的输入数据信号的一帧;以及控制电路,用于控制存储器的写入/读取操作,使得输入数据信号被顺序写入存储器中 单扫描方式,并且存储在存储器中的数据以多扫描方式作为第一和第二多扫描信号读出。 控制电路控制读取操作的定时,使得在第一多扫描信号开始之后的预定时间开始第二多扫描信号的读取操作,预定时间等于写入操作的延迟时间 对应于第二部分的输入数据相对于对应于第一部分的输入数据。

    Display device and display control method
    5.
    发明授权
    Display device and display control method 有权
    显示设备和显示控制方式

    公开(公告)号:US08791932B2

    公开(公告)日:2014-07-29

    申请号:US13375248

    申请日:2010-02-17

    摘要: A display device includes: an LED control section (4) for carrying out control in which (i) an output luminance of an LED (10) whose measured luminance is deviated from a reference luminance or (ii) output luminances of peripheral LEDs (10) which are provided around the LED (10) is or are corrected, respectively, by using control information of the plurality of LEDs, which control information contains (a) information on measured luminances of the plurality of LEDs, the information being obtained by the plurality of photosensors (11) and (b) positional information of the plurality of LEDs, the positional information being obtained by the plurality of photosensors (11), and a liquid crystal display control section (3) for controlling, based on (i) video signals which have been subjected to the video signal process and are supplied from a video signal processing section (2) and (ii) the control information supplied from the LED control section (4), (a) levels of video signals to be supplied to pixels corresponding to the LED (10), whose output luminance is corrected or (b) levels of video signals to be supplied to pixels corresponding to the peripheral LEDs, whose output luminances are corrected, the reference luminance being a luminance which is originally expected to be outputted from each of the plurality of LEDs.

    摘要翻译: 显示装置包括:LED控制部分(4),用于执行其中(i)其测量亮度偏离参考亮度的LED(10)的输出亮度或(ii)外围LED(10)的输出亮度 )分别通过使用多个LED的控制信息来分别被修正,该控制信息包含(a)关于多个LED的测量亮度的信息,该信息是由 多个光传感器(11)和(b)多个LED的位置信息,多个光电传感器(11)获得的位置信息;以及液晶显示控制部分(3),用于基于(i) 已经经过视频信号处理并从视频信号处理部分(2)提供的视频信号和(ii)从LED控制部分(4)提供的控制信息,(a)要提供的视频信号的电平 对应于其输出亮度被校正的LED(10)的像素,或(b)要提供给其输出亮度被校正的外围LED对应的像素的视频信号的电平,作为最初的亮度的参考亮度 期望从多个LED中的每一个输出。

    IMAGE DISPLAY DEVICE AND IMAGE DISPLAY METHOD
    9.
    发明申请
    IMAGE DISPLAY DEVICE AND IMAGE DISPLAY METHOD 审中-公开
    图像显示装置和图像显示方法

    公开(公告)号:US20120313986A1

    公开(公告)日:2012-12-13

    申请号:US13578824

    申请日:2011-02-22

    IPC分类号: G09G5/02

    摘要: Provided is an image display device having pixels each of which includes sub-pixels of four or more colors and requires fewer dither matrices. This image display device includes a display section in which color filters of sub-pixel colors that are M colors in total including three principal colors of red, green, and blue, as well as at least one color other than the three principal colors are arranged regularly; and a gray-scale processing section (50) that performs gray-scale processing by a dither method with respect to an input image signal. The M sub-pixel colors are divided into N groups (G1 to GN) in such a manner that there is at least one group to which two or more colors belong. The gray-scale processing section (50) includes dither matrix storage ROMs (541 to 54N) that store N combinations of dither matrices corresponding to the N groups, respectively.

    摘要翻译: 提供了具有像素的图像显示装置,每个像素包括四种或更多种颜色的子像素,并且需要更少的抖动矩阵。 该图像显示装置包括显示部分,其中总共包括三种主要颜色的红色,绿色和蓝色的M个颜色的子像素颜色的滤色器以及三种主色以外的至少一种颜色 经常; 以及通过抖动方法相对于输入图像信号进行灰度处理的灰度处理部(50)。 M个子像素颜色以至少一个属于两个或多个颜色的组的方式被分成N组(G1至GN)。 灰度处理部分(50)包括分别存储对应于N组的抖动矩阵的N个组合的抖动矩阵存储ROM(541至54N)。

    IMAGE PROCESSING APPARATUS, DISPLAY APPARATUS PROVIDED WITH SAME, AND IMAGE PROCESSING METHOD
    10.
    发明申请
    IMAGE PROCESSING APPARATUS, DISPLAY APPARATUS PROVIDED WITH SAME, AND IMAGE PROCESSING METHOD 有权
    图像处理装置,具有相同显示装置和图像处理方法

    公开(公告)号:US20120301047A1

    公开(公告)日:2012-11-29

    申请号:US13576699

    申请日:2011-02-22

    IPC分类号: G06K9/40

    摘要: Provided is an image processing apparatus that obtains an effect of improving perceived definition even when an input image signal does not include much of a high range component. The image processing apparatus (10) includes a high-pass filter (1) that extracts a mid-high range component from the input image signal; a nonlinear processing unit (2) that performs nonlinear processing on an output signal from the high-pass filter (1); an addition unit (3); a threshold value determination unit (4) that determines an upper threshold value and lower threshold value for clipping processing based on the maximum value and minimum value of the pixel values in the input image signal in the range thereof that was subjected to processing by the high-pass filter (1); a clipping unit (5) that performs clipping processing using the upper threshold value and lower threshold value; a high-pass filter (6) for an output signal from the clipping unit (5); a non-linear processing unit (7) that performs non-linear processing on an output signal from the high-pass filter (6); and an addition unit (8) that adds an output signal from the non-linear processing unit (7) and the output signal from the clipping unit (5).

    摘要翻译: 提供一种即使当输入图像信号不包括大范围分量的情况下也可获得提高感知清晰度的效果的图像处理装置。 图像处理装置(10)包括从输入图像信号中提取中高范围分量的高通滤波器(1) 对来自高通滤波器(1)的输出信号进行非线性处理的非线性处理单元(2); 加法单元(3); 阈值确定单元,其基于经过高处理的范围内的输入图像信号中的像素值的最大值和最小值来确定用于削波处理的上阈值和下阈值 通过滤波器(1); 剪切单元(5),其使用所述上阈值和下阈值进行剪辑处理; 用于来自剪辑单元(5)的输出信号的高通滤波器(6); 对来自高通滤波器(6)的输出信号执行非线性处理的非线性处理单元(7); 以及添加来自非线性处理单元(7)的输出信号和来自剪切单元(5)的输出信号的加法单元(8)。