Software Design For Liquid Crystal Display Based On MST9251

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.