公开(公告)号：US20060098879A1

公开(公告)日：2006-05-11

申请号：US11271708

申请日：2005-11-14

申请人： Wooshik Kim ,  Seungwoo Lee ,  Woochul Kim ,  Dmitry Birinov

发明人： Wooshik Kim ,  Seungwoo Lee ,  Woochul Kim ,  Dmitry Birinov

IPC分类号： G06K9/36

CPC分类号： G09G3/3611 ,  G09G5/39 ,  G09G2320/0252 ,  G09G2340/02 ,  G09G2340/16

摘要： There are provided an apparatus and method for performing dynamic capacitance compensation (DCC) in a liquid crystal display (LCD). The DCC apparatus includes: a first line buffer reading and temporarily storing pixel values of an image for each line; an encoder transforming and quantizing the pixel values stored for each line for each block and generating bit streams; a memory storing the generated bit streams; a decoder decoding the bit streams stored in the memory for the each block and outputting the decoded bit streams; a second line buffer reading and temporarily storing the decoded pixel values for the each block; and a compensation pixel value detector detecting a compensation pixel value for each pixel, from pixel value differences between pixel values of a current frame stored in the first line buffer and pixel values of a previous frame stored in the second line buffer. Therefore, it is possible to reduce the number of pins of a memory interface by reducing the number of memory device for storing pixel values of image data, required for performing DCC of a LCD, resulting in minimizing a chip size, and to enhance compression efficiency without visual deterioration in images.

摘要翻译： 提供了一种用于在液晶显示器（LCD）中执行动态电容补偿（DCC）的装置和方法。 DCC装置包括：第一行缓冲器，读取并临时存储每行的图像的像素值; 编码器对每个块的每行存储的像素值进行变换和量化，并产生位流; 存储所生成的比特流的存储器; 解码器，对存储在每个块中的存储器中的比特流进行解码并输出解码的比特流; 第二行缓冲器读取并临时存储每个块的解码像素值; 以及补偿像素值检测器，从存储在第一行缓冲器中的当前帧的像素值和存储在第二行缓冲器中的先前帧的像素值之间的像素值差中检测每个像素的补偿像素值。 因此，通过减少用于存储LCD的DCC所需的图像数据的像素值的存储器件的数量，可以减少存储器接口的引脚数，从而最小化芯片尺寸，并提高压缩效率 没有图像的视觉恶化。