Cryptography – Video cryptography – Video electric signal modification
Reexamination Certificate
2006-12-12
2006-12-12
Smithers, Matthew (Department: 2137)
Cryptography
Video cryptography
Video electric signal modification
C705S052000
Reexamination Certificate
active
07149309
ABSTRACT:
An access control method for use with a broadcast communication network is described. The access control method includes the steps of receiving an encoded program at a subscriber unit via the broadcast communication network, and preventing decoding of the encoded program at the subscriber unit for at least one preselected time period, preselected in accordance with a preference of a user of the subscriber unit. Alternatively, the encoded program received at the subscriber unit may be decoded for at least one preselected time period, preselected in accordance with a preference of the user of the subscriber unit. Related methods and apparatus are also described.
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Ladas and Parry LLP
NDS Ltd.
Smithers Matthew
LandOfFree
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