Embeded Multimedia Player Research And Development

This text mainly introduces a kind of project according to the system design of the multi-media player with built-in technique.That system mainly is based on the built-in chip to add operate system, enlarge necessary interface at the meantime, develop a multimedia player under the supportive operate system.Along with the science technical development, people carry on an extensive research of multi-media document, having already had numerous players of brands at home and abroad currently, but still having weakness in several parts, for example:1) CD is the mainly existing technical medium document's carrying body, making capacity small so, replacing difficult irregularity.This design uses the hard drive to be the conduct and actions carry body, capacity nature ratio is much bigger than CDs. According to connect with PC, it is convenient to add or delete data on the hard-driver, attain the purpose of replacing the broadcasting contents at any time.2) The contents that existing multi-madia players product can broadcast is comparatively lack, even just one kind, for example MP3 players can hardly broadcast a VCD media document. This design tries hard for broadcast various medium in the whole body, since can broadcast MP3, CD etc. audio medium document, broadcast VCD, DVD etc. video medium document.Attain real meaning of multi-media broadcast function.In the whole system design process, we mainly apply the S3C2410 ARM chip, outside expand IDE hard drive interface of Sumsang, customize and add windows ce .net operate system, under the operate system support, write driver program to each one outside expand of interface, in the meantime use Directshow SDK and EVC++ to develop multi-media player.The picture shows at LCD or through a VGA interface to show on a computer screen, audio signal pass to the CODEC chip through the S3 C2410 of the IIS bus, then convert it to imitate signal, in order to use a sound box or headphones etc. to listen to.