Program substitution

Details Program substitution Program substitution

2011-08-30

2011-08-30

Zand, Kambiz (Department: 2434)

Information security

Prevention of unauthorized use of data including prevention...

Access control

C725S032000, C725S027000, C725S028000, C725S035000, C725S031000, C380S200000, C380S210000, C380S255000, C380S277000, C713S150000, C726S028000, C726S029000

Reexamination Certificate

active

08011012

ABSTRACT:
Multiple keys are distributed to multiple clients. The keys provide access to media content. A group of clients are identified to receive substituted media content during a predetermined time period. Modified keys are generated that identify the substituted media content and the predetermined time period. The modified keys are distributed to the group of clients. The modified keys cause the group of clients to receive the substituted media content during the predetermined time period.

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PCT Search Report dated Jul. 3, 2007, relating to Application No. PCT/US2007/001615.

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