System for securely delivering encrypted content on demand with access contrl
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Jun 27, 2002
app pub date -
Jul 3, 2001
filing date -
Oct 26, 2000
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A method of delivering content from a head end to subscriber terminals within one or more cable systems. Such content may be video, audio or the like. The method includes the step of encrypting the content offline to form pre-encrypted content, generating an encryption record containing parameters employed for encrypting the content. Based on the encryption record, a control message for permitting access to the pre-encrypted content is generated using a periodical key provided by the first cable system. The pre-encrypted content and associated control message is thereafter forwarded to the first subscriber terminal for decryption of the content. For a second subscriber terminal within a second cable system, the pre-encrypted content is retrofitted with a second control message permitting the pre-encrypted content to be decrypted by the second subscriber terminal. Further, multiple versions of a control message for multiple service tiers within a cable system may be generated, each version for permitting access to a particular service tier within the system.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully