彩色PDP的驱动集成电路

彩色PDP显示系统是目前大型壁挂式电视、HDTV和大型多媒体显示技术的发展趋势,文中从PDP显示屏的特点出发,介绍了彩色PDP驱动集成电路的基本结构和性能特点,并给出了PDP显示屏的两种接口电路。     

电真空器件

0114775彩色 PDP 的驱动集成电路[刊]/彭国贤//国外电子元器件.—2001,(4).—16～21(C)彩色 PDP 显示系统是目前大型壁挂式电视、HDTV 和大型多媒体显示技术的发展趋势,文中从PDP 显示屏的特点出发,介绍了彩色 PDP 驱动集成电路的基本结构和性能特点,并给出了 PDP 显示屏的两种接口电路。     

彩色AC-PDP制造技术

由于PDP在大屏幕显示领域中的优越性和应用潜力，吸引着世界上许多电子制造公司投入巨资，去研制、开发与生产PDP产品，使得彩色AC—PDP的新结构、新材料、新的驱动技术层出不穷，PDP的制造技术得到了不断提高，因而极大地改善了PDP的性能。     

彩色PDP中FPGA的时序控制设计

彩色PDP显示系统是目前大型壁挂式电视、HDTV和大型多媒体显示技术的发展趋势。本文从PDP显示屏的特点出发,介绍了彩色PDP时序控制的基本结构和基本算法设计,并对比传统的时序设计方法,在FPGA资源和系统性能上有所优化。     

107cm彩色PDP显示屏及模块

为了促进我国彩色 PDP产业的发展 ,我国政府把彩色 PDP列为“九五”、“十五”重大科技攻关项目 ,旨在通过项目的研究开发 ,形成具有自主知识产权的彩色 PDP生产技术 ,培养彩色 PDP技术人才队伍。国家科技部下达了“大屏幕彩色 PDP显示屏生产技术研究”国家重点科技攻关滚动项目。南京电子器件研究所相关课题在研制开发过程中 ,建立了 1 0 7cm(42英寸 )彩色 PDP屏试验线 ,自主设计、开发成功 1 0 7cm彩色 PDP屏和显示器。解决的关键技术包括 :大面积彩色 PDP显示屏试验线设计技术 ,大基板上高精细障壁制作技术 ,大基板上高精细电…     

高分辨率彩色等离子体显示屏及模块的开发

在完成了107 cm WVGA彩色等离子体显示(PDP)屏及模块研究和开发的基础上,又进行了对角线为64 cm、单元节距为0.63 mm×0.63 mm、分辨率为SVGA(800×600)的彩色PDP显示屏的工艺及模块电路的研究和开发.在适合高分辨显示的彩色PDP显示屏和模块电路方面进行了努力,开发出具有SVGA物理分辨率的64 cm彩色PDP显示屏和模块.     

107cm彩色PDP显示屏及模块的研究开发

建成大屏蔽彩色PDP显示屏试验线,开发了部分关键设备,建立全套自主开发的适合批量生产的彩色PDP显示屏制作工艺,开发了采色PDP显示模块电路。     

彩色等离子体显示发展现状

九十年代以来,等离子体显示（PDP）技术获得了快速发展,目前21英寸、42英寸、50英寸彩色PDP已实现批量生产,60英寸彩色PDP已开发成功,预计不久将可上市。彩色PDP以其平板型、高清晰度、宽视角、高国质、大面积显示、量产能力强等特点,在40英寸～70英寸显示器市场上已确立了无可匹敌的优势,市场潜力巨大,彩色PDP当前的水平目前,用于彩色PDP显示的器件结构主要有三种,汤生放电（Townsend－Discharge）型DCPDP、对向放电型ACPDP、表面放电型ACPDP。发展最快、产业化程度最高、代表彩色PDP发展水平的是表面放电型彩色P…     

中科院应化所PDP荧光粉取得创新性成果

<正>北京有色金属研究总院、中科院长春应化所、中科院光机与物理所、有研稀土新材料股份有限公司经多年的联合攻关,突破了彩色等离子显示屏(PDP)用荧光体产业化关键技术,开发出了具有我国独立知识产权的PDP用高效荧光粉,所得产品主要性能达国际先进水平。     

终端设备与显示设备

0322647107cm 彩色 PDP 显示屏及模块的研究开发[刊]/陈向真//光电子技术.—2003,23(1).—1～5(C)建成大屏幕彩色 PDP 显示屏试验线,开发了部分关键设备,建立全套自主开发的适合批量生产的彩色PDP 显示屏制作工艺,开发了彩色 PDP 显示模块电路。参11 0322648PDP 中的模拟视频数字化电路设计[刊]/曹峰//电子器件.—2003,26(2).—194～198(L)视频接口电路是等离子体显示器(PDP)的关键技术之一,它对输入视频数据信号的处理能力直接影响整套 PDP 显示系统的特性,包括对不同视频制式的支     

两种不同类型的滤光片式彩色亮度计性能比较

显示器的色度和亮度可以通过彩色亮度计进行测量。小视场滤光片式彩色亮度计因其低成本在生产线上应用广泛,而近来出现的影像式彩色亮度计虽然也属滤光片式,但是由于其探测器不同而具有大视场,且结构、原理和性能与前者都有差异。量化比较这两类滤光片式彩色亮度计的性能,可以为影像式彩色亮度计的质量评估提供依据。文章分别选取两类滤光片式彩色亮度计中的代表型号,通过进行原理分析和实验验证进行对比分析。结果表明,影像式彩色亮度计的性能不低于小视场滤光片式彩色亮度计。     

A hybrid color and frequency features method for face recognition

This correspondence presents a novel hybrid Color and Frequency Features (CFF) method for face recognition. The CFF method, which applies an Enhanced Fisher Model (EFM), extracts the complementary frequency features in a new hybrid color space for improving face recognition performance. The new color space, the RIQ color space, which combines the R component image of the RGB color space and the chromatic components I and Q of the YIQ color space, displays prominent capability for improving face recognition performance due to the complementary characteristics of its component images. The EFM then extracts the complementary features from the real part, the imaginary part, and the magnitude of the R image in the frequency domain. The complementary features are then fused by means of concatenation at the feature level to derive similarity scores for classification. The complementary feature extraction and feature level fusion procedure applies to the I and Q component images as well. Experiments on the Face Recognition Grand Challenge (FRGC) version 2 Experiment 4 show that i) the hybrid color space improves face recognition performance significantly, and ii) the complementary color and frequency features further improve face recognition performance.     

LED背光对LCD色彩的影响

研究LED背光对液晶器件色彩的影响和CSTN及TFT—LCD白色色度坐标的变化规律，以及LCD的红、绿、蓝三色受LED背光的影响规律及色彩还原性的变化，并对背光发光光谱和液晶屏的透过光谱进行了测量比较。     

Performance analysis of PLED based flat panel display with RGBW sub-pixel layout

PLED based flat panel displays with RGBW sub-pixel format utilizing a white emitter as the fourth primary, was analyzed theoretically and experimentally. Instead of the traditional white point characterization method, uniform luminance color space was introduced to characterize the display performance in a more realistic way. In the uniform luminance color space, after the power efficiency of the white emitter exceeds a threshold determined by the green emitter’s efficiency, the RGBW display becomes more energy efficient than the RGB display. To simulate the display performance in different applications, such as computer desktop visualization, or video application, the color usage frequency with Gaussian distribution was adopted. As the color usage frequency distribution gets closer to that in the real images, the full color pixel’s power efficiency of the RGBW display is more and more dependent on the EL performance of the white emitter. With a highly efficient white emitter as W sub-pixel, the RGBW display will be the preferable choice for displaying video information.     

印刷型FED显示器图像校正模块的设计

为了改善彩色场致发射显示器的显示质量,分析了印刷型FED显示器中存在的色彩偏移、灰度损失和灰度畸变等问题。通过实验测试和理论分析提出了相应的色彩调整与灰度的非线性校正解决方案。将图像校正模块应用到彩色FED驱动电路中,使彩色FED图像的色彩再现和灰度再现性能得到了较好的改善,同时也增强了图像显示的层次和细节程度。     

Color fringe removal in narrow color regions of digital images

Color fringe is an artifact that should be removed in a color digital image. This paper proposes a detection method of color fringe in narrow color regions. Near-saturation region (NSR) information as well as gradient magnitudes and directions of RGB color components are used to detect transition regions, in which color fringe occurs. Four gradient directions are used in order to improve the performance of color fringe detection. NSR is used to prevent excessive detection of possible color fringe regions. Then, the detected color fringe is removed using the color difference values. Experimental results show the effectiveness of the proposed color fringe removal method.     

基于多核DSP 的微光与红外图像彩色融合系统

针对微光与红外图像彩色融合实时性强、数据量大的特点,提出了一种基于多核DSP 的微光与红外双波段图像实时融合系统。选用Altera 公司带串行收发器的FPGA Cyclone IV 完成图像的采集、预处理和外围设备的控制,采用TI 公司最新的8 核高性能DSP TMS320C6678 完成图像融合。通过SRIO(Serial RapidIO)接口实现两者之间的数据传输,完成双波段图像融合和色彩传递,将彩色图像的颜色信息传递给融合图像。该系统可以实现有效的图像融合和色彩传递,适合双波段视频自然感彩色融合系统应用。     

Perceptually uniform color spaces for color texture analysis: anempirical evaluation

RGB, a nonuniform color space, is almost universally accepted by the image processing community as the means for representing color. On the other hand, perceptually uniform spaces, such as L*a*b*, as well as approximately-uniform color spaces, such as HSV, exist, in which measured color differences are proportional to the human perception of such differences. This paper compares RGB with L*a*b* and HSV in terms of their effectiveness in color texture analysis. There has been a limited but increasing amount of work on the color aspects of textured images. The results have shown that incorporating color into a texture analysis and recognition scheme can be very important and beneficial. The presented methodology uses a family of Gabor filters specially tuned to measure specific orientations and sizes within each color texture. Effectiveness is measured by the classification performance of each color space, as well as by classifier-independent measures. Experimental results are obtained with a variety of color texture Images. Perceptually uniform spaces are shown to outperform RGB in many cases     

On ratio-based color indexing

The color ratio approach to indexing has been found to be robust and effective in indexing image and video databases, in different color spaces, and when using transformed color features, such as those from the Karhunen-Loeve transform (KLT) or the discrete cosine transform (DCT). However, the reason for the superior performance of the color ratio model, especially on different color spaces or with transformed color features has, at best, been speculative. This paper develops a generalized form for the color ratio model, based on which we characterize the general distribution of the color ratios. From the distribution, we present a theory that explains and supports the performance of the color ratio approach in image and video indexing. It is shown that the same theory accounts for its effectiveness in different color spaces and in the transform domain. Some general problems encountered in using the original retinex lightness algorithm, and some other issues specific to ratio-based color indexing are discussed in the light of the theory. Results are presented which show that the proposed theory is supported by empirical evidence.     

一种新的彩色图像压缩方法

提出了一种用于图像压缩和图像增强的新方法,该方法将彩色图像分解为3部分,然后选用某种类型的小波对每一部分进行分解。其中,高频分量分别使用了YUV、YIQ和CIEXYZ彩色空间进行映射。鉴于映射后的分量以及低频分量均由红色、绿色和蓝色分量构成,因而使用这3种颜色对压缩后的图像进行重构。处理结果显示,在彩色图像的比特率不同时,3种色彩空间表现出不同的性能。其中使用CIEXYZ色彩空间进行的压缩在信噪比(SNR)和压缩比率方面的表现最好。