System for two-way digital multimedia broadcast and interactive services

摘要

A system is presented for two-way digital multimedia broadcast services, enabling a variety of interactive and other applications. These applications include: navigation from one video program to another by selection of objects in the current video; creation and transmission of records of user viewing selection histories; iterative video-based data search and retrieval; dynamic customization of coordination between video content of the broadcast stream and data embedded therein; and the dynamic creation of "personalized" programs by the user without, through the broadcast and selection of overlapping program segments which are themselves customized for a particular user or group of users.