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Timeshift Broadcasting System Disclosure Number: IPCOM000016298D
Original Publication Date: 2002-Nov-30
Included in the Prior Art Database: 2003-Jun-21

Publishing Venue



Disclosed is a system which delivers broadcast programs to a viewer via a local server. The system consists of broadcasters, viewers and local networks for the viewers. The viewers are connected to the broadcasters with some networks. The viewers and the local networks are connected with some communication channels and audio/video lines. The local networks are consists of receivers, storages, and servers for audio/video contents. Each viewer has a receiver which can make a reservation and play an audio/video contents via a network. Programs which contains audio and video are delivered with an ordinary broadcast or a satellite internet. The local networks can record the broadcast programs and distribute them to the viewer using an audio/video exclusive line or a sharing network. There exist some programs which prohibit a viwer from recording for the reason of copyright. It is assumed that recording on the local network is permitted in advance. A broadcaster provides Electric Program Guide (EPG) to a viewer via the network. The viewer can make a reservation of a program on the EPG to the broadcaster. As the viewer makes a reservation, the broadcaster searches the local network for the viewer. If the local network can record the program and distribute it to the viewer, the broadcaster informs a viewing key for the program and some information to both the local network and the viewer. The key is for the identification of the program and the viewer and it can be used for accounting. In the information for the viewer, the local server ID and the information of the viewing available time are included. As the program is broadcasted, the contents is saved on the local network. Local networks record the programs only which are made reservations by local viewers and keep them only for a certain period of time. As the program is recorded, the viewer can request a distribution of the program using the aforementioned key. The viewer doesn't have to care the key and which local server to be connected. A software on the receiver knows the viewing key and which server should be connected. At any time on the viewing available time, the viewer can watch the program by pressing the Play button on the receiver. 1