Processing digital television programs at a receiver so as to prevent interception of unscrambled programs
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 5, 2012
Grant Date -
Aug 10, 2006
app pub date -
Feb 9, 2005
filing date -
Feb 9, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
When a stream of packets (e.g. MPEG-2 transport stream) includes certain packets representing unscrambled digital television program content and certain other packets representing the content of a scrambled digital television program that is currently tuned by a receiver, interception of the unscrambled digital television program at an output of the receiver may be prevented by determining whether packets representing program content have an ascertained characteristic (e.g. have a packet ID matching one of a set of packet IDs) that uniquely identifies the packets as representing content of the scrambled program. For packets not having the characteristic, delivery to the output of the digital television receiver in an unscrambled state may be prevented, e.g., by discarding the packet or by overwriting its payload.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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