Multi-tier digital TV programming for content distribution
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Dec 21, 2004
Grant Date -
N/A
app pub date -
Dec 10, 1999
filing date -
Dec 9, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method of securely providing data to a user's system over a broadcast infrastructure. The method comprising the steps of: encrypting the data using a first encrypting key; encrypting a first decrypting key using a second encrypting key; dividing at least part of the encrypted data into a series of logical packages; placing at least some of the logical packages into a broadcast carousel for cyclical broadcast over the broadcast infrastructure; broadcasting the packages in broadcast carousel so that they can be received by at least one user's system, wherein the broadcast is cyclical and repeats periodically; and transferring the encrypted first decrypting key, which has been encrypted with the second encrypting key, to the user's system. In another embodiment, a system is disclosed to carry out the above method in a broadcast infrastructure and an image overlaid on top of a primary image being displayed isused to denote that additional logical packages are available for receipt by broadcast.
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