发明名称 |
Method and apparatus for free previews of communication network services |
摘要 |
Limited duration previews of program offerings available for purchase via a communication network are provided in a cryptographically secure manner at virtually any time during the service. The invention has particular applicability to the provision of video services on a pay-per-view basis. Such a video service is provided during a program epoch. A fixed period is defined during the program epoch when portions of the video service are available for viewing on a preview basis. A consumer is allowed to preview, without purchase, portions of the video service at any time during the fixed period for up to a maximum preview duration that is shorter than the fixed period. The consumer can then purchase the video service for viewing during the program epoch after previewing portions thereof. A plurality of records is maintained to service different previewable programs concurrently.
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申请公布号 |
US5594794(A) |
申请公布日期 |
1997.01.14 |
申请号 |
US19940324591 |
申请日期 |
1994.10.18 |
申请人 |
GENERAL INSTRUMENT CORPORATION OF DELAWARE |
发明人 |
EYER, MARK;SHUMATE, ALLEN;MORONEY, PAUL |
分类号 |
H04H1/00;H04K1/00;H04N7/16;H04N7/167;(IPC1-7):H04L9/00 |
主分类号 |
H04H1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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