LED阵列显示驱动与像质优化技术研究
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摘要
平板显示已成为当前的主流显示技术，在一些特殊的应用场合，平板显示技术受到显示控制性价比、显示分辨率等问题的困扰。本文以LED平板显示为例，对上述问题进行了一定的研究。
针对简单的LED信息显示屏的单CPU软扫描控制器通讯时显示屏黑屏与抖动问题，设计完成了以单片机为核心的单CPU软扫描显示控制器，实现了单、双色LED显示屏的显示控制，并通过合理的单片机定时器中断和串口中断设计，成功解决了单CPU软扫描LED信息显示屏通讯中的黑屏与抖动。
基于全彩色LED显示的色度学原理和LED阵列显示的驱动技术，探讨了基于像素重组的像质优化技术，同时基于单CPU的软扫描显示控制器，设计了LED像素重组像质优化技术的静态仿真系统，在16×32彩色阵列显示单元上实现了32×64点阵图像的显示，取得了良好的效果。
将像素重组技术应用于实时图像处理平台TDS642EVM，由DSP处理器实现高分辨率图像的低分辨率采集和显示数据的组织与处理，通过图像处理仿真板的GPIO口输出控制彩色阵列LED显示屏，实现了视频LED实时显示的像质优化技术。
本文的研究工作，为彩色阵列超分辨率显示技术研究打下了一定的基础，同时系统本身亦具有广阔的市场前景。
Recently, flat panel display technique becomes the primary display technique. In some special instances, flat panel display technique is blocked in certain problems, such as the display control performance to price ratio and the display resolution. Based on LED display technique, this paper makes a study of the above issues.
A single CPU soft-scan controller was designed aiming at the display interruption and the dithering problem of the simple LED information display during the period of the single CPU soft-scan controller communicating with the computer. The display control of single and double color LED display is accomplished, and the display interruption and the dithering problem of the single CPU soft-scan LED information display is solved successfully.
The image optimizing technique based on pixel reorgnization was discussed based on the chroma theory of full color LED display and the driving technique of LED color array display, and a static simulation system using the image optimizing technique based on pixel reorgnization was designed based on the single CPU soft-scan display controller.
Pixel reorgnization technique was combined with the real time image processing system of TDS642EVM, low resolution image sampling of the high resolution image and the organization and processing of the display data is accomplished by the DSP, color array LED display is controlled through the GPIO interface of the image processing simulation system, image optimizing technique of video LED real time display is accomplished.
The research work of this paper laid the foundation for color array super resolution display technique to some extend, while the system itself had a wide market foreground.
针对简单的LED信息显示屏的单CPU软扫描控制器通讯时显示屏黑屏与抖动问题，设计完成了以单片机为核心的单CPU软扫描显示控制器，实现了单、双色LED显示屏的显示控制，并通过合理的单片机定时器中断和串口中断设计，成功解决了单CPU软扫描LED信息显示屏通讯中的黑屏与抖动。
基于全彩色LED显示的色度学原理和LED阵列显示的驱动技术，探讨了基于像素重组的像质优化技术，同时基于单CPU的软扫描显示控制器，设计了LED像素重组像质优化技术的静态仿真系统，在16×32彩色阵列显示单元上实现了32×64点阵图像的显示，取得了良好的效果。
将像素重组技术应用于实时图像处理平台TDS642EVM，由DSP处理器实现高分辨率图像的低分辨率采集和显示数据的组织与处理，通过图像处理仿真板的GPIO口输出控制彩色阵列LED显示屏，实现了视频LED实时显示的像质优化技术。
本文的研究工作，为彩色阵列超分辨率显示技术研究打下了一定的基础，同时系统本身亦具有广阔的市场前景。
Recently, flat panel display technique becomes the primary display technique. In some special instances, flat panel display technique is blocked in certain problems, such as the display control performance to price ratio and the display resolution. Based on LED display technique, this paper makes a study of the above issues.
A single CPU soft-scan controller was designed aiming at the display interruption and the dithering problem of the simple LED information display during the period of the single CPU soft-scan controller communicating with the computer. The display control of single and double color LED display is accomplished, and the display interruption and the dithering problem of the single CPU soft-scan LED information display is solved successfully.
The image optimizing technique based on pixel reorgnization was discussed based on the chroma theory of full color LED display and the driving technique of LED color array display, and a static simulation system using the image optimizing technique based on pixel reorgnization was designed based on the single CPU soft-scan display controller.
Pixel reorgnization technique was combined with the real time image processing system of TDS642EVM, low resolution image sampling of the high resolution image and the organization and processing of the display data is accomplished by the DSP, color array LED display is controlled through the GPIO interface of the image processing simulation system, image optimizing technique of video LED real time display is accomplished.
The research work of this paper laid the foundation for color array super resolution display technique to some extend, while the system itself had a wide market foreground.
引文
1 张保民．成像系统分析导论．北京：国防工业出版社，1992
2 张毅，张保民．基于像素重组的彩色阵列超分辨率显示技术．南京理工大学学报．2004(2)：145-148
3 Zhang Yi, Zhang Baomin, Bai Lianfa, et al. Phase theory model for analyses of spatial-sampling system and its utilization in multi-frame super-resolution. Proc of the SPIE, 2002, 4925:579-584
4 应根裕，胡文波，邱勇等．平板显示技术．北京：人民邮电出版社，2002
5 刘曙光．LED电子显示屏真彩显示的几种关键技术．国外电子测量技术．2001(6)：27-31
6 王鹏，许志祥．256灰度级LED大屏幕视频控制器．显示技术．2000(8)：46-49
7 程德诗．LED显示屏视频图像分解力提示技术综述．现代显示．2004(2)：11-14
8 刘德全，王建楹．LED显示屏提高解像度的新途径——复合像素应用．舰船科学技术．2002(8)：39-41
9 王桥立，郝宗潮．LED显示屏虚拟像素原理及应用．现代显示．2004(2)：33-35
10 赵才荣，刘金娥，丁铁夫．基于LED图文屏的多灰度图像实现方法．液晶与显示．2006(2)：82-86
11 王瑞光，陈宇，金福寿，朴燕．，张建涛．基于主观感觉理论的LED图像显示质量的简易测定评估方法．发光学报．2001(9)：303-308
12 Brown Elliott C H, Credelle T L, Hart S, et al. Development of the PenTile matrix color AMLCD sub-pixel architecture and rendering algorithms. Journals of the SID, 2003, 11 (1): 89-98
13 张叔猛．嵌入式系统和FPGA在LED显示屏中的应用研究与实现．武汉理工大学．2005
14 林纲华．多媒体LED视频卡的设计与实现．中国科学院长春光学精密机械与物理研究所．2006
15 葛集彪．LED视频显示屏实时处理与驱动技术．南京理工大学．2003
16 罗惠明等．电视技术基础．广州：华南理工大学出版社，2001
17 张颖新．双通道融合彩色夜视技术研究．南京理工大学．2005
18 TDS642EVM多路实时图像处理平台用户使用手册．闻亭科技发展有限责任公司．2004
19 张志涌，徐彦琴等．MATLAB教程——基于6.X版本．第1版．北京：北京航空航天 大学出版社，2001
20 于开正，周海峰．高速实时数字信号处理器．集美大学学报．2001，Vol．6，No．3：260-263
21 刘强，国澄明．数字媒体处理器TMS320DM642及其应用．电子测量技术．2003(6)：55-56
22 Tan K M C, Maxion R A. Determining the operational limits of an anomaly-based intrusion detector. IEEE Journal on Selected Areas in Communications, 2003, 21 (1):96-110
23 李勇明，曾孝平．高频PCB设计中出现的干扰分析及对策．电子工艺技术．2003，Vol．24，No．1：13-15
24 李方慧，王飞，何佩琨．TMS320C6000系列DSPs原理与应用．第2版．北京：电子工业出版社，2003
25 张伟，吴红杰，徐海鹰．电路设计与制版ProtelDXP高级应用．第1版．北京：人民邮电出版社，2004
26 姜志海．单片机原理及应用．北京：电子工业出版社，2005
27 胡汉才．单片机原理及其接口技术．北京：清华大学出版社，2004
28 将立平．数字电路．北京：兵器工业出版社，2001
29 黄元元．全彩LED大屏幕的彩色重现与图像处理．南京理工大学．1999
30 谭伟．LED屏显示接口技术研究．东北林业大学．2003
31 王鹏．基于多媒体分布式控制的LED大屏幕彩色视频系统研究．上海大学．2000
32 Jordan R H, Armstrong N, Savage D, Ching Tang. High-resolution, multicolor organic LED displays. Lasers and Electro-Optics Society Annual Meeting, 1998. IEEE 1998 (1): 57-60
33 Hoshino, Yamada, Matsumoto, Shimoyama. A diffraction-limited-resolution full-color display with a 10-/spl mu/m-square visual field. IEEE The Sixteenth Annual International Conference on 19-23 Jan, 2003: 283-286
34 Takahashi, Tadokoro, Takeuti. LED array unit with silicon microreflector. Micro Machine and Human Science, 1994:67-71
35 Gu, Forrest. Design of fiat-panel displays based on organic light-emitting devices. Selected Topics in Quantum Electronics, IEEE Journal of Volume 4, Issue 1, Jan.-Feb, 1998:83-99
36 Bhattacharya, Wagner, Yeh-Jiun Tung, Esler, Hack, M. Organic LED pixel array on a dome. Proceedings of the IEEE Volume 93, Issue 7, July, 2005:1273-1280
37 Jeon C W, Choi H W, Dawson M D. Fabrication and performance of high-density, matrix-addressable green and ultraviolet micro-LED arrays. Lasers and Electro-Optics Society, 2003. The 16th Annual Meeting of the IEEE Volume2, 2003:878-879
38 Kijima, Asai, Kishii, Tamura. RGB luminescence from passive-matrix organic LED'S. Electron Devices, IEEE Transactions on Volume 44, Issue 8, Aug, 1997:1222-1228
39 Donghui Wang, Hui Qian, Xin Yuan. Fast and high-accuracy spectral measurements of LED by linear CCD sensor and software calibration. Proc, SPIE 5633., 2005:578-584
2 张毅，张保民．基于像素重组的彩色阵列超分辨率显示技术．南京理工大学学报．2004(2)：145-148
3 Zhang Yi, Zhang Baomin, Bai Lianfa, et al. Phase theory model for analyses of spatial-sampling system and its utilization in multi-frame super-resolution. Proc of the SPIE, 2002, 4925:579-584
4 应根裕，胡文波，邱勇等．平板显示技术．北京：人民邮电出版社，2002
5 刘曙光．LED电子显示屏真彩显示的几种关键技术．国外电子测量技术．2001(6)：27-31
6 王鹏，许志祥．256灰度级LED大屏幕视频控制器．显示技术．2000(8)：46-49
7 程德诗．LED显示屏视频图像分解力提示技术综述．现代显示．2004(2)：11-14
8 刘德全，王建楹．LED显示屏提高解像度的新途径——复合像素应用．舰船科学技术．2002(8)：39-41
9 王桥立，郝宗潮．LED显示屏虚拟像素原理及应用．现代显示．2004(2)：33-35
10 赵才荣，刘金娥，丁铁夫．基于LED图文屏的多灰度图像实现方法．液晶与显示．2006(2)：82-86
11 王瑞光，陈宇，金福寿，朴燕．，张建涛．基于主观感觉理论的LED图像显示质量的简易测定评估方法．发光学报．2001(9)：303-308
12 Brown Elliott C H, Credelle T L, Hart S, et al. Development of the PenTile matrix color AMLCD sub-pixel architecture and rendering algorithms. Journals of the SID, 2003, 11 (1): 89-98
13 张叔猛．嵌入式系统和FPGA在LED显示屏中的应用研究与实现．武汉理工大学．2005
14 林纲华．多媒体LED视频卡的设计与实现．中国科学院长春光学精密机械与物理研究所．2006
15 葛集彪．LED视频显示屏实时处理与驱动技术．南京理工大学．2003
16 罗惠明等．电视技术基础．广州：华南理工大学出版社，2001
17 张颖新．双通道融合彩色夜视技术研究．南京理工大学．2005
18 TDS642EVM多路实时图像处理平台用户使用手册．闻亭科技发展有限责任公司．2004
19 张志涌，徐彦琴等．MATLAB教程——基于6.X版本．第1版．北京：北京航空航天 大学出版社，2001
20 于开正，周海峰．高速实时数字信号处理器．集美大学学报．2001，Vol．6，No．3：260-263
21 刘强，国澄明．数字媒体处理器TMS320DM642及其应用．电子测量技术．2003(6)：55-56
22 Tan K M C, Maxion R A. Determining the operational limits of an anomaly-based intrusion detector. IEEE Journal on Selected Areas in Communications, 2003, 21 (1):96-110
23 李勇明，曾孝平．高频PCB设计中出现的干扰分析及对策．电子工艺技术．2003，Vol．24，No．1：13-15
24 李方慧，王飞，何佩琨．TMS320C6000系列DSPs原理与应用．第2版．北京：电子工业出版社，2003
25 张伟，吴红杰，徐海鹰．电路设计与制版ProtelDXP高级应用．第1版．北京：人民邮电出版社，2004
26 姜志海．单片机原理及应用．北京：电子工业出版社，2005
27 胡汉才．单片机原理及其接口技术．北京：清华大学出版社，2004
28 将立平．数字电路．北京：兵器工业出版社，2001
29 黄元元．全彩LED大屏幕的彩色重现与图像处理．南京理工大学．1999
30 谭伟．LED屏显示接口技术研究．东北林业大学．2003
31 王鹏．基于多媒体分布式控制的LED大屏幕彩色视频系统研究．上海大学．2000
32 Jordan R H, Armstrong N, Savage D, Ching Tang. High-resolution, multicolor organic LED displays. Lasers and Electro-Optics Society Annual Meeting, 1998. IEEE 1998 (1): 57-60
33 Hoshino, Yamada, Matsumoto, Shimoyama. A diffraction-limited-resolution full-color display with a 10-/spl mu/m-square visual field. IEEE The Sixteenth Annual International Conference on 19-23 Jan, 2003: 283-286
34 Takahashi, Tadokoro, Takeuti. LED array unit with silicon microreflector. Micro Machine and Human Science, 1994:67-71
35 Gu, Forrest. Design of fiat-panel displays based on organic light-emitting devices. Selected Topics in Quantum Electronics, IEEE Journal of Volume 4, Issue 1, Jan.-Feb, 1998:83-99
36 Bhattacharya, Wagner, Yeh-Jiun Tung, Esler, Hack, M. Organic LED pixel array on a dome. Proceedings of the IEEE Volume 93, Issue 7, July, 2005:1273-1280
37 Jeon C W, Choi H W, Dawson M D. Fabrication and performance of high-density, matrix-addressable green and ultraviolet micro-LED arrays. Lasers and Electro-Optics Society, 2003. The 16th Annual Meeting of the IEEE Volume2, 2003:878-879
38 Kijima, Asai, Kishii, Tamura. RGB luminescence from passive-matrix organic LED'S. Electron Devices, IEEE Transactions on Volume 44, Issue 8, Aug, 1997:1222-1228
39 Donghui Wang, Hui Qian, Xin Yuan. Fast and high-accuracy spectral measurements of LED by linear CCD sensor and software calibration. Proc, SPIE 5633., 2005:578-584
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