"The present document defines the DVB solution for Multimedia Home Platforms (MHPs) that was developed to fulfil the related DVB commercial requirements MHP045 [A]. It relies on the use of appropriate DVB specifications for digital video broadcast and associated interactive services TR 101 200 [47]. The MHP is applicable to all DVB defined transmission media and networks such as satellite@ cable@ terrestrial@ microwave. The final DVB MHP solution is intended to cover the whole range of implementations including Integrated Receiver Decoders (IRDs)@ integrated TV sets@ multimedia computers and local clusters of such devices connected via In-Home Digital Networks (IHDN). This first release focuses on single MHP terminals and does not include such local clusters. Chapters 1-14 specify the applicable technologies and technical definitions in a generic way. Chapter 15 provides detailed profile definitions for the initial profiles Enhanced Broadcasting 1@ Interactive Broadcasting 1 and Internet Access 1@ which can be extended with future additional profile definitions. This specification is firstly intended for implementers of MHPs on various hardware and software platforms. Secondly it is intended for developers of applications that use the MHP functionality and APIs. The MHP specification aims to ensure interoperability between MHP applications and different MHP implementations. Implementers should consult the publisher of this specification regarding conformance. NOTE: This specification defines the interfaces visible to applications. Application developers should not assume that other related interfaces are available unless they are specifically listed. Purpose The DVB system already provides a comprehensive toolbox to enable interoperable digital video broadcasting systems based on MPEG-2 standards for various transmission media including satellite@ cable@ terrestrial and microwave. This toolbox also covers interactive services using different kinds of return channels and further supporting functionalities such as service information and many others. The Multimedia Home Platform (MHP) adds a technical solution for the user terminal that enables the reception and presentation of applications in a vendor@ author and broadcaster neutral framework. Here ""neutral"" includes scenarios that consider legacy infrastructure. Applications from various service providers will be interoperable with different MHP implementations in an horizontal market@ where applications@ networks@ and MHP terminals can be made available by independent providers."