| 高灰度级TFT-LCD显示系统的实现 |
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| 引用本文： | 宋依青,方振东,盛惠兴,成云. 高灰度级TFT-LCD显示系统的实现[J]. 工矿自动化, 2012, 38(2): 40-43 |
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| 作者姓名： | 宋依青 方振东 盛惠兴 成云 |
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| 作者单位： | 1. 常州工学院计算机信息工程学院,江苏常州,213002
2. 河海大学计算机与信息学院(常州),江苏常州 213022;江苏省输配电装备技术重点实验室,江苏常州 213022 |
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| 基金项目： | 常州市中小企业创新基金 |
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| 摘 要： | 提出了一种以FPGA为核心控制器的高灰度级TFT-LCD显示系统的设计方案。该系统采用幅值-帧速率控制调制-空间混合灰度调制方法,首先将10 bit的R、G、B信号分割成高8 bit数据和低2 bit数据,低2 bit数据经过空间处理后平均分到4个相邻的8 bit数据上,然后把这8 bit数据继续分割成高6 bit数据和低2 bit数据,其中高6 bit数据用于幅值调制,低2 bit数据用于帧速率控制调制,从而实现1 024个灰度等级显示。试验结果表明,该系统具有良好的显示效果和较高的显示灰度等级。
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| 关 键 词： | 薄膜晶体管液晶显示器 混合灰度调制 FPGA 脉冲宽度调制 帧速率控制调制 图像处理 FIFO |
Implementation of TFT-LCD Display System with High Gray Levels |
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| SONG Yi-qing , FANG Zhen-dong , SHENG Hui-xing , CHENG Yun. Implementation of TFT-LCD Display System with High Gray Levels[J]. Industry and Automation, 2012, 38(2): 40-43 |
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| Authors: | SONG Yi-qing FANG Zhen-dong SHENG Hui-xing CHENG Yun |
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| Affiliation: | 1(1.School of Computer Information Engineering of Changzhou Institute of Technology,Changzhou 213002,China.2.College of Computer and Information of Hohai University(Changzhou),Changzhou 213022,China.3.Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology,Changzhou 213022,China) |
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| Abstract: | The paper proposed a design scheme of TFT-LCD display system with high gray levels which takes FPGA as core controller.The system uses mixed gray modulation method of amplitude-FRC-space,which segments 10 bit R,G,B signal into high 8 bit data and low 2 bit data,and the low 2 bit data processed by space process are assigned to four adjacent 8 bit data equally,then the 8 bit data are segmented into high 6 bit data and low 2 bit data,and the high 6 bit data are used for amplitude modulation,the low 2 bit data are used for FRC,so as to realize 1 024 gray levels display.The test result showed that the system has good display effect with high display gray levels. |
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| Keywords: | TFT-LCD mixed gray modulation FPGA PWM FRC image processing FIFO |
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