说明：  upd6453是NEC 的一颗OSD芯片,这是它的中文文档,还有开发的例子,下载了它,不用再为看几十页的英文头疼了,可以省你很多的时间.
(upd6453 is the NEC' s an OSD chip, which is its Chinese documents, as well as the development of an example, download it, do not have to read dozens of pages of the English as a headache, and can save you a lot of time.)