A common communication language that can address all the applications running in a multitude of set top boxes (STBs) or client devices and application servers. The present invention, DATP protocol encapsulates a meta language that provides a generic portable communication application programmer interface...http://www.google.com.hk/patents/US20020108122?utm_source=gb-gplus-share專利 US20020108122 - Digital television application protocol for interactive television
