INTERACTIVE MULTI-SCREEN SERVICE CONTENT DELIVERY METHOD AND DEVICE

The present invention relates to a method for delivering interactive multi-screen service content in a multi-screen service content delivery system as well as a server and user terminal for implementing the method. According to an embodiment of the present invention, a method of delivering multi-screen content from a server to a plurality of user terminals simultaneously in a multi-screen content delivery system comprises: providing an interactive media document form the server to the plurality of user terminals wherein the interactive media document comprises an identification of the multi-screen content and a plurality of time options for playing or downloading the multi-screen content and the server collecting a plurality of user-selected time options and multicasting or broadcasting the multi-screen content according to the selected time options such that broadcast/multicast technique is used as much as possible for simultaneous video content delivery to a plurality of user to improve the efficiency of network utilization.