Video on demand pay per view services with unmodified conditional access functionality
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Feb 8, 2005
Grant Date -
N/A
app pub date -
Jul 21, 2000
filing date -
Jul 21, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A system and method for storing and retrieving program material for subsequent replay is disclosed. The method comprises the steps of receiving access control information and the program material encrypted according to a first encryption key, the access control information including the first encryption key and control data; further encrypting the access control information and the encrypted program material according to a second encryption key; encrypting the second encryption key according to a third encryption key to produce a fourth encryption key; and storing the encrypted access control information and encrypted program material and the fourth encryption key.
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