...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Optical engineering >On-chip frame memory reduction using a high-compression-ratio codec in the overdrives of liquid-crystal displays
【24h】

On-chip frame memory reduction using a high-compression-ratio codec in the overdrives of liquid-crystal displays

机译：在液晶显示器的过驱动中使用高压缩比编解码器减少片上帧存储器

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Overdrive is commonly used to reduce the liquid-crystal response time and motion blur in liquid-crystal displays (LCDs). However, overdrive requires a large frame memory in order to store the previous frame for reference. In this paper, a high-compression-ratio codec is presented to compress the image data stored in the on-chip frame memory so that only 1 Mbit of on-chip memory is required in the LCD overdrives of mobile devices. The proposed algorithm further compresses the color bitmaps and representative values (RVs) resulting from the block truncation coding (BTC). The color bitmaps are represented by a luminance bitmap, which is further reduced and reconstructed using median filter interpolation in the decoder, while the RVs are compressed using adaptive quantization coding (AQC). Interpolation and AQC can provide three-level compression, which leads to 16 combinations. Using a rate-distortion analysis, we select the three optimal schemes to compress the image data for video graphics array (VGA), wide-VGA LCD, and standard-definitionTV applications. Our simulation results demonstrate that the proposed schemes outperform interpolation BTC both in PSNR (by 1.479 to 2.205 dB) and in Subjective visual quality.
机译：超速驱动通常用于减少液晶显示器（LCD）的液晶响应时间和运动模糊。但是，过驱动需要大的帧存储器才能存储前一帧以供参考。在本文中，提出了一种高压缩比编解码器来压缩存储在片上帧存储器中的图像数据，从而在移动设备的LCD过驱动器中仅需要1 Mbit的片上存储器。所提出的算法进一步压缩由块截断编码（BTC）产生的彩色位图和代表值（RV）。彩色位图由亮度位图表示，亮度位图在解码器中使用中值滤波器插值进一步缩小和重建，而RV使用自适应量化编码（AQC）进行压缩。插值和AQC可以提供三级压缩，从而导致16种组合。使用速率失真分析，我们选择了三种最佳方案来压缩视频图形阵列（VGA），宽VGA LCD和标清电视应用的图像数据。我们的仿真结果表明，所提出的方案在PSNR（从1.479到2.205 dB）和主观视觉质量上均优于插值BTC。

著录项

  • 来源
    《Optical engineering》 |2010年第11期|p.117005.1-117005.7|共7页
  • 作者

    Jun Wang; Kyeong-yuk Min; Jong-Wha Chong;

  • 作者单位

    Hanyang University Department of Electronics and Computer Engineering 718 R&D Building 17 Haengdang-Dong, Seongdong-Gu Seoul, 133-791, Republic of Korea;

    Hanyang University Department of Electronics and Computer Engineering 718 R&D Building 17 Haengdang-Dong, Seongdong-Gu Seoul, 133-791, Republic of Korea;

    Hanyang University Department of Electronics and Computer Engineering 718 R&D Building 17 Haengdang-Dong, Seongdong-Gu Seoul, 133-791, Republic of Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    block truncation coding; color image compression; adaptive quan-tization coding; LCD overdrive;

    机译：块截断编码;彩色图像压缩;自适应量化编码液晶超速;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号