System for limiting use of down-loaded video-on-demand data

Details System for limiting use of down-loaded video-on-demand data System for limiting use of down-loaded video-on-demand data

1993-06-07

1995-03-21

Cain, David C.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 10, 380 5, 348 7, H04N 7167

Patent

active

054004020

ABSTRACT:
A digital data system that includes a control system at a customer site that blocks access to a down-loaded stored program after it has been viewed a predetermined number of times (e.g., once), or after a predetermined interval, or any combination thereof.

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