Dynamic video scrambling
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 12, 1984
Grant Date -
N/A
app pub date -
Nov 6, 1981
filing date -
Nov 6, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A means for coding and decoding video signals by the application of one of a plurality of available scrambling signals includes means for comparing the brightness level during a predetermined time period of the video signal with the brightness level of the video signal over the succeeding predetermined time period. There are means for changing from one scrambling signal to another if the difference between brightness levels in successive predetermined time periods exceeds a given value.
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