Application And Research On The Technology Of OSD On The Video

OSD is a kind of technology superimposing character information in electronic signals of video, making characters or graphics superimposed on television images. At present the application of this technology is extremely abroad. Therefore, responsing to this demand, this essay makes research and design on achieving OSD Combined with latest technology on the market.This paper mainly analyzes on the principle of OSD, and compared with the popular OSD blue prints on the market currently, making analysis and demonstrations on different blue prints, focusing on the features and usage of the OSD chip MB90092of FUJITSU company. This design uses SCM C8051F320to constitute the control core, to achieve the control of OSD chips.This system of MB90092on OSD, has the circuit simple、hardware scale small、stable performance、low-cost、High reliability,very suitable for embedded system application.