Method and drive circuit for controlling LEDs
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 27, 2007
Grant Date -
May 19, 2005
app pub date -
Sep 29, 2004
filing date -
Sep 30, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method and control circuit are disclosed for controlling light emitting diodes ('LEDs'). Based upon the LED's current versus intensity characteristic and temperature versus intensity characteristic, the rate of change of LED output intensity with respect to current is calculated. Adjusting LED current to provide zero rate of change ensures that LED output is maximised.
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