基于MST9251的液晶显示器软件设计
摘要
显示器件是人机联系和信息展示的窗口,随着信息技术和计算机互联网的高速发展,知识和信息传播交流越来越依赖显示技术,显示器件已成为全球性、实时性信息交流的主要手段。近年来,液晶显示技术飞速发展,液晶显示器以其轻薄短小、低耗电量、无辐射危险、平面直角显示以及影像稳定不闪烁等优势,在价格不断下跌的吸引下,已全面取代CRT显示器而占据主流地位,目前正朝着更大尺寸方向发展,分辨率越来越高。本文对大屏幕高分辨率液晶显示器相关技术及其系统软件的开发进行了研究。
本论文的研究课题来源于讯诚光电公司一款47英寸液晶显示器开发项目。该项目采用了Mstar公司的MST9251图像处理芯片和Winbond公司的W79E632A微处理器构成的硬件系统,按照液晶显示器产品开发规格书的具体要求来设计液晶显示器的软件部分,实现了一种基于MST9251的液晶显示器软件系统。
论文基于微处理器和图像处理芯片的硬件系统,分析了信号输入模块、键盘输入模块、MCU控制模块和图像处理模块的功能。软件部分介绍了IIC总线协议,对按键处理、模式探测处理、OSD(On-Screen Display)用户菜单、工厂模式及烧机模式等各部分进行了具体的设计与开发。设计出了一种最高支持分辨率为1920×1200,能自动识别处理VGA和DVI信号的液晶显示器。显示器具有正常满框显示输入视频图像,用户模式OSD菜单和工厂模式菜单对图像的调节等功能。
测试阶段,使用视频图形信号产生器对所有的相关功能进行了严格的系统测试。测试结果完全符合产品开发规格书,是目前比较先进和功能完善的以MST9251为核心的液晶显示系统。
In recent years,the liquid crystal display has already replaced CRT display and occupied the major position for its advantages of thin and small,low power consumption,no radiation dangerous,steady image and flicker-free,under the attraction of constantly dropping price.In 2006,the 17" liquid crystal display has become main product of market in China.15" eliminated progressively.19" and wider display increased by a large margin,developing in larger size and higher resolution at present.Therefore it is great realistically meaningful to research the high-resolution of the large screen and relevant system software.
The research of this thesis originated from a project developing 47-inch LCD display. Microprocessor W79E632A from Winbond Corporation and imaging processor MST9251 from MStar Corporation are adopted in the project as its kernel hardware system.LCD Software system was designed according to the requirement from specification and realized with MST9251 Scaler.
On the basis of hardware containing microprocessor and imaging processor,a concrete analysis is presented to the functionality of signal input module,keyboard input module,MCU controlling module and image processing module.The processing course of the signal was carried on corresponding analysis.The IIC bus was introduced.All the portions were researched and designed such as keyboard processing,mode detection,OSD user menu,factory mode and burn in mode.A LCD display was designed of supporting up to 1920×1200 and automatically identifying and processing input signal VGA and DVI.Normal video images adjusting the picture from OSD menu were realized finally.
The Video Image Generator was used for examining all designed function strictly at the phase of system test.The test result totally accords with the specification of product development.Consequently a software system for LCD with MST9251 is achieved.
本论文的研究课题来源于讯诚光电公司一款47英寸液晶显示器开发项目。该项目采用了Mstar公司的MST9251图像处理芯片和Winbond公司的W79E632A微处理器构成的硬件系统,按照液晶显示器产品开发规格书的具体要求来设计液晶显示器的软件部分,实现了一种基于MST9251的液晶显示器软件系统。
论文基于微处理器和图像处理芯片的硬件系统,分析了信号输入模块、键盘输入模块、MCU控制模块和图像处理模块的功能。软件部分介绍了IIC总线协议,对按键处理、模式探测处理、OSD(On-Screen Display)用户菜单、工厂模式及烧机模式等各部分进行了具体的设计与开发。设计出了一种最高支持分辨率为1920×1200,能自动识别处理VGA和DVI信号的液晶显示器。显示器具有正常满框显示输入视频图像,用户模式OSD菜单和工厂模式菜单对图像的调节等功能。
测试阶段,使用视频图形信号产生器对所有的相关功能进行了严格的系统测试。测试结果完全符合产品开发规格书,是目前比较先进和功能完善的以MST9251为核心的液晶显示系统。
In recent years,the liquid crystal display has already replaced CRT display and occupied the major position for its advantages of thin and small,low power consumption,no radiation dangerous,steady image and flicker-free,under the attraction of constantly dropping price.In 2006,the 17" liquid crystal display has become main product of market in China.15" eliminated progressively.19" and wider display increased by a large margin,developing in larger size and higher resolution at present.Therefore it is great realistically meaningful to research the high-resolution of the large screen and relevant system software.
The research of this thesis originated from a project developing 47-inch LCD display. Microprocessor W79E632A from Winbond Corporation and imaging processor MST9251 from MStar Corporation are adopted in the project as its kernel hardware system.LCD Software system was designed according to the requirement from specification and realized with MST9251 Scaler.
On the basis of hardware containing microprocessor and imaging processor,a concrete analysis is presented to the functionality of signal input module,keyboard input module,MCU controlling module and image processing module.The processing course of the signal was carried on corresponding analysis.The IIC bus was introduced.All the portions were researched and designed such as keyboard processing,mode detection,OSD user menu,factory mode and burn in mode.A LCD display was designed of supporting up to 1920×1200 and automatically identifying and processing input signal VGA and DVI.Normal video images adjusting the picture from OSD menu were realized finally.
The Video Image Generator was used for examining all designed function strictly at the phase of system test.The test result totally accords with the specification of product development.Consequently a software system for LCD with MST9251 is achieved.
引文
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[2】万长虹,王天科.液晶及其显示器原理分析[J].微处理机,2005,1:61-64.
[3】刘达.新世纪的主流显示技术[J].有线电视技术,2003,4:60-62.
[4】季国平.中国TFT-LCD产业的发展[J].现代显示,2005,8:3-10.
[5】李宏,张家田.液晶显示器件应用技术[M].北京:机械工业出版社,2004:6-8.
[6】千展研究室.PC维护与升级[M].北京:中国铁道出版社,2001:174-178.
[7】[日]堀浩雄,铃木幸治.彩色液晶显示(金轸裕译)[M].北京:科学出版社,2003:54,64,219.
[8】高鸿锦,董友梅.液晶与平板显示技术[M].北京:北京邮电大学出版社,2007:202-234.
[9】徐洪.LVDS的工作原理与应用[J].通信与广播电视,2002,2:34-37.
[10]Winbond Electronics Corp.Preliminary W79E632 Data Sheet[R】.2004.
[11]Mstar semiconductor.MST9251A-205 Data Sheet Version 1.2[R].2006.
[12]Mstar semiconductor.MST9XXX LCD Controller Application Note[R].2003.
[13】陈敏.基于NT68521Scaler的液晶显示器软件设计[D].成都:西南交通大学,2004:
[14】贾华.新型多功能LCD显示系统的设计与实现[D].天津:天津大学,2004:
[15】李国平,武海艳.C51实现12C总线的应用研究[J].福建电脑,2006,9:168.
[16】何立民.12C总线应用系统设计[M].北京:北京航空航天大学出版社,1994:1-35
[17]Microchip Technology Inc.24LC16B 16K EEPROM[R].1998.
[18]Samsung Electronics.4M×32bit GDDR SDRAM K4D263238E-GC[R].2003.
[19]VESA.VESA and Industry Standards and Guidelines for Computer Display Monitor Timing(DMT)Version 1.0,Revision 10[R].2004.
[20]ViHonor Opto-Electronics Co.Ltd.VHO LCDTV 电气检查表[R].2006.
[21]ViHonor Opto-Electronics Co.Ltd.VHO Monitor Firmware Define[R].2005.
[22]AU OPTRONICS CORPORATION.17.0" SXGA Color TFT-LCD Module[R].2004.
[23]AU OPTRONICS CORPORATION.Specification for TX315XW01 V.0-preliminary[R].2004.
[24]SUCH TECHNOLOGY.AD Controller Board Specification[R].2001.
[25]Video Electronics Standards Association.VESA ENHANCED EXTENDED DISPLAY IDENTIFICATION DATA STANDARD[R].2000.
[26】彭秀华,徐爱钧.单片机高级语言C51应用程序设计[M].北京:电子工业出版社,1998:
[27】陈龙三.8051单片机C语言控制与应用[M].北京:清华大学出版社,1999:
[28】鲁业频.数字电视基础[M].北京:电子工业出版社,2002:38-45.
[29】刘达,龚建荣.数字电视技术[M].北京:电子工业出版社,2005:2-8.
[30】宋培义,刘立新.单片机原理、接口技术及应用[M].北京:中国广播电视出版社,1999:
[31】李朝青.单片机原理及接口技术[M].北京:北京航空航天大学出版社,2005:
[32】江思敏.PCB和电磁兼容设计[M].北京:机械工业出版社,2006:1-7.
[33]Himax Technologies.Mobile Driver IC Gamma Tuning[R].2006.
[34]Microchip Technology Inc.24LC21A 1K EEPROM[R].1996.
[35】崔选选,费文晓.数字视频接口[J].广播与电视技术,2006,3:107-110.
[36】朱晓燕,曹晋红.浴盆曲线在可靠性设计和管理中的应用[J].中国质量,2007,7:25-27.
[37]Mstar semiconductor.MST6251A-205 Data Sheet Version 1.3[R].2006.
[38]Mstar semiconductor.MST5251A-205 Data Sheet Version 1.4[R].2006.
[39]Keil Software.Keil C51中文说明[EB/OL].cn.fpdisplay.com,2007.
[40】Keil Software.Cx51编译器用户手册[EB/OL].www.c51bbs.com,2001.
[41】周忠达.Source Insight3.0:Linux源代码阅读的利器[EB/OL].cn.fpdisplay.com,2001.
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