|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||H04N-071/67 H04L-009/00 H04K-001/00|
|미국특허분류(USC)||380/021 ; 380/010 ; 380/023 ; 380/03|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 602 인용 특허 : 14|
A system and method for secure purchase and delivery of video content programs over various distribution media, including distribution networks and digital video disks, includes an integrated circuit card (e.g., a smart card, PCMCIA card) which is configured to store decryption capabilities for related video programs. The decryption capabilities are initially kept in a secure store at a video merchant. When a purchaser orders a particular video program, the decryption capabilities for that program are downloaded to the IC card, either at the merchant pre...
[ We claim:] [1.] A video content delivery system comprising:a video content provider;a viewer computing unit located remotely from the video content provider;a distribution medium;a video encryption device at the video content provider to supply a video data stream in encrypted format on the distribution medium, the video encryption device encrypting the video data stream using a cryptographic program key; andan integrated circuit card compatibly couplable to, and interactive with, the viewer computing unit, the integrated circuit card having a memory t...