NETWORK-DISTRIBUTED VIDEO REPRODUCING METHOD AND NETWORK-DISTRIBUTED VIDEO REPRODUCING DEVICE

• Main Authors: MIO SATORU, IIMURO SATOSHI, KOREEDA HIROYUKI, MORI NAOKI, TOYOMURA TAKASHI
• Format: Patent
• Language: English
• Published: 15.05.2008
• Subjects: CALCULATING; COMPUTING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

PROBLEM TO BE SOLVED: To prevent loads from concentrating on a network line between a server and a viewer's video reproducing device in particular, in a system for receiving the distribution of video by a network. SOLUTION: Content can be downloaded from a user in advance even when the content has determined date and hour to be normally provided for a viewer. Encrypted content is distributed at that time, and when viewable date and hour come, the video reproducing device requests a key for decryption, and a content distribution server for providing content transmits the decryption key to the video reproducing device. The video reproducing device decrypts the encrypted content with the decryption key, so that the content can be reproduced. When the user downloads the content in advance, a discount rate is applied. COPYRIGHT: (C)2008,JPO&INPIT