Method and apparatus for providing and reducing dynamic chroma copy protection effects by modifying luminance copy protection signals
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Dec 9, 2010
app pub date -
Jun 5, 2009
filing date -
Jun 5, 2009
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Chroma copy protection signals are provided or synthesized for component or composite video signals by modifying one or more luminance copy protection signal. The system takes advantage of the characteristics of component video signals, wherein the luminance signal (channel) generally is subject to automatic gain control while the chrominance signal (channel) is decoupled from the luminance signal in automatic gain control (AGC) systems of a video recorder. Accordingly, when a copy protection signal is applied to the luminance signal but does not affect the chrominance signal, a video recorder will output a signal with an attenuated luminance signal and a full amplitude chrominance signal. This causes erroneous color saturation effects. An alternative embodiment provides method and apparatus for reducing or defeating chroma copy protection effects such as disclosed herein.
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