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As digital convergence of home networking and broadcasting technologies is being accelerated, it becomes increasingly important to achieve interoperability of not only heterogeneous devices but also various types of services. Therefore, in this paper, we describe the design and implementation of architecture for interoperability of data broadcasting and home networking services based on the ACAP middleware and the UMB stack. The proposed architecture provides a TV-centric user interface capable of managing home networking services using TV sets, by applying Java TV Xlet interface and HAVi user interface APIs for home networking sendees such as data broadcasting services. In addition, it provides data broadcasting services through metadata and media streaming for home networked devices without ACAP middleware.