Backlight adjustment method, backlight adjustment system and display device

    公开(公告)号:US10026367B2

    公开(公告)日:2018-07-17

    申请号:US14501975

    申请日:2014-09-30

    IPC分类号: G09G3/34 G09G3/36

    摘要: The present invention provides a backlight adjustment method, a backlight adjustment system and a display device. The backlight adjustment method comprises: dividing a frame of picture into n image blocks, obtaining the sub-backlight brightness corresponding to each image block, and further comprises: calculating an average backlight brightness corresponding to the frame of the picture on the basis of each sub-backlight brightness, determining whether the sub-backlight brightness needs to be enhanced on the basis of the average backlight brightness, and performing enhancement for the sub-backlight brightness which needs to be enhanced, wherein n is an integer greater than 1. The backlight adjustment method not only solves the problems of reduced brightness for bright picture and poor display effect associated with existing backlight adjustment method, but also reduces the overall display power consumption, increase the image contrast and reduce influence of mura (ripple phenomenon) on the screen.

    Method and apparatus for decoding video

    公开(公告)号:US09838704B2

    公开(公告)日:2017-12-05

    申请号:US14436757

    申请日:2014-08-29

    摘要: Embodiments of the present application provide a method for decoding a video and an apparatus for decoding a video, which increases accuracy of data processing while simplifying a micro architecture design of inverse discrete cosine transform in video decoding process. The method comprises: storing received data to be decoded in a plurality of first data registers and a plurality of second data registers that are spaced with each other in sequence; performing shift and look-up table processing on the data to be decoded that is stored in the first data registers and the second data register, to obtain a look-up table result corresponding to a first coefficient matrix and a look-up table result corresponding to a second coefficient matrix respectively; performing a distributed computing on the look-up table result corresponding to the first coefficient matrix and the look-up table result corresponding to the second coefficient matrix, to obtain decoded data.

    Synchronous display method of spliced display screen, and timing controller and spliced display screen using the same
    4.
    发明授权
    Synchronous display method of spliced display screen, and timing controller and spliced display screen using the same 有权
    拼接显示屏的同步显示方式,以及使用其的定时控制器和拼接显示屏

    公开(公告)号:US09329829B2

    公开(公告)日:2016-05-03

    申请号:US14316182

    申请日:2014-06-26

    摘要: The disclosure provides a synchronous display method of an spliced display screen which comprises at least two spliced display units and at least two timing controllers respectively corresponding to the spliced display units, wherein the method comprises steps of: receiving, by each timing controller, a timing control signal for a current frame of the corresponding spliced display unit, feedback from the spliced display unit corresponding to the timing controller; determining, by each timing controller, a phase difference between the timing control signal for the current frame of the corresponding spliced display unit and a reference timing control signal received by the timing controller; judging, by each timing controller, whether or not the phase difference goes beyond a predetermined threshold range; if it is judged that the phase difference goes beyond the predetermined threshold range, generating a phase adjustment value, by the timing controller, based on the phase difference, wherein the phase adjustment value is less than the phase difference; generating, by each timing controller, a next timing control signal for a next frame of the corresponding spliced display unit, based on the phase adjustment value, so that a next phase difference between the next timing control signal for the next frame and the reference timing control signal is the phase adjustment value; and outputting the next timing control signal for the next frame to the corresponding spliced display unit. Meanwhile, the disclosure also provides a timing controller used in this synchronous display method and a spliced display screen to which this synchronous display method is applied.

    摘要翻译: 本公开提供了拼接显示屏幕的同步显示方法,其包括分别对应于拼接显示单元的至少两个拼接显示单元和至少两个定时控制器,其中该方法包括以下步骤:由每个定时控制器接收定时 对应拼接显示单元的当前帧的控制信号,来自对应于定时控制器的拼接显示单元的反馈; 由每个定时控制器确定对应的拼接显示单元的当前帧的定时控制信号与由定时控制器接收的参考定时控制信号之间的相位差; 由每个定时控制器判断所述相位差是否超出预定阈值范围; 如果判断相位差超过预定阈值范围,则由定时控制器基于相位差产生相位调整值,其中相位调整值小于相位差; 根据相位调整值,由每个定时控制器产生下一个对应拼接显示单元的下一个帧的定时控制信号,使得下一帧的下一定时控制信号与基准定时 控制信号是相位调整值; 并将下一帧的下一个定时控制信号输出到相应的拼接显示单元。 同时,本公开还提供了在该同步显示方法中使用的定时控制器和应用该同步显示方法的拼接显示屏幕。

    Circuit and method for eliminating image sticking during power-on and power-off

    公开(公告)号:US10325563B2

    公开(公告)日:2019-06-18

    申请号:US15515777

    申请日:2016-07-13

    IPC分类号: G09G3/36

    摘要: A circuit and method for eliminating image sticking during power-on and power-off, the circuit for eliminating image sticking during power-on and power-off includes a voltage detecting module and a common signal writing module; the voltage detecting module detects whether an operating voltage is lower than a first threshold voltage during power-on, and detects whether the operating voltage is lower than a second threshold voltage during power-off; and the common signal writing module writes, when the operating voltage is lower than the first threshold voltage during power-on or the operating voltage is lower than the second threshold voltage during power-off, a signal with a voltage equal to a voltage at a common voltage signal terminal at the same timing, to a data line.

    Light source control module, backlight module and driving method thereof
    7.
    发明授权
    Light source control module, backlight module and driving method thereof 有权
    光源控制模块,背光模块及其驱动方法

    公开(公告)号:US09570016B2

    公开(公告)日:2017-02-14

    申请号:US14448060

    申请日:2014-07-31

    摘要: The present invention provides a light source control module, a backlight module and driving method thereof which can overcome the problems of insufficient color amount, poor performance and lowered color saturation. A light source control module of the present invention is used for separately controlling illumination colors and/or brightness of each light source in the backlight module according to image information. The driving method of the backlight module comprises: calculating representative color and/or brightness of each image section based on image information, wherein each image section corresponds to a light output area on the output surface of the backlight module, each light output area is illuminated by one light source in the backlight module; adjusting the illumination colors and/or brightness of each light source such that the color and/or brightness of each light output area is in conformity with the representative color and/or brightness of corresponding image section.

    摘要翻译: 本发明提供一种光源控制模块,背光模块及其驱动方法,其可以克服颜色不足,性能差和色饱和度降低的问题。 根据图像信息,本发明的光源控制模块用于分别控制背光模块中的每个光源的照明颜色和/或亮度。 背光模块的驱动方法包括:基于图像信息计算每个图像部分的代表性颜色和/或亮度,其中每个图像部分对应于背光模块的输出表面上的光输出区域,每个光输出区域被照亮 通过背光模块中的一个光源; 调整每个光源的照明颜色和/或亮度,使得每个光输出区域的颜色和/或亮度与相应图像部分的代表性颜色和/或亮度一致。