Scalable application framework to support IPTV client device independence based on MPEG-21

Abstract

This paper presents a framework to ensure application interoperability for heterogeneous IPTV client devices with different capabilities by providing application scalability. To support device independent application in IPTV service environment, we suggest a new XML schema (named Scalable Application Markup Language: SAML) based on MPEG-21 DIDL (Digital Item Declaration Language).