基于FPGA的全彩色高清大屏LED扫描控制系统的设计  

Design of Scan Control System for LED Screen Based on FPGA

作　　者：朱玮鹏[1] 王玲[1] 

机构地区：[1]湖南大学电器与信息工程学院,长沙410000

出　　处：《世界科技研究与发展》2012年第1期35-38,共4页World Sci-Tech R&D

摘　　要：介绍了一种具有高清显示能力的LED大屏幕全彩显示屏的驱动控制系统的设计方案。在FPGA内部实现系统各控制模块,对其反γ校正模块和灰度扫描模块的原理和实现进行了着重介绍。主控制芯片采用了Altera公司的低端芯片系列CycloneⅡ的EP2C8Q208,很好的控制了成本,列驱动芯片采用聚积科技的MB15026,最高移位频率可达25 MHz,使整个系统有很强的扩展性。最后,根据设计结果,给出了反γ校正和灰度扫描的仿真波形。A design method of a scan control system is introduced for large LED screen, which could display full color and high density ima- ges. Control modules are Realized in FPGA. Principle and realizing of anti-γ correction module and grayscale scan module are mainly discussed. In order to reduce cost, EP2CSQ208 ;the low side series of products in Altera is adopted as the control core chip. MB15026, whose shift frequency goes up to 25 MHz, which is helpful for system＇s extending is adopted as the column driver. Finally, simulations of anti-γ module and grayseale scan module are accomplished.

关 键 词：LED显示屏 扫描驱动 FPGA 反γ校正 灰度 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TN873[自动化与计算机技术—控制科学与工程]