Method and drive circuit for controlling LEDs

Details Method and drive circuit for controlling LEDs Method and drive circuit for controlling LEDs

2007-03-27

2007-03-27

Dinh, Trinh Vo (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S307000, C315S224000

Reexamination Certificate

active

10954377

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.

REFERENCES:
patent: 5406172 (1995-04-01), Bennett
patent: 5625616 (1997-04-01), Koike et al.
patent: 5694208 (1997-12-01), Ichikawa
patent: 5783909 (1998-07-01), Hochstein
patent: 6111739 (2000-08-01), Wu et al.
patent: 6400101 (2002-06-01), Biebl et al.
patent: 6614358 (2003-09-01), Hutchison et al.
patent: 6870325 (2005-03-01), Bushell et al.
patent: 0 733 894 (1996-09-01), None
patent: 1 339 263 (2003-08-01), None
patent: 99/56303 (1999-11-01), None

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