Control of light intensity using pulses of a fixed duration...

Details Control of light intensity using pulses of a fixed duration... Control of light intensity using pulses of a fixed duration...

2007-07-31

2009-10-06

Philogene, Haissa (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S307000, C315S360000, C315S362000, C315S312000

Reexamination Certificate

active

07598683

ABSTRACT:
A method and circuit to control the intensity of lights, illumination fixtures, and displays using pulses of a fixed duration and a fixed frequency (FD/FF) is provided. In particular, the method may be used to control one more light sources. By varying the number of pulses in a control burst, the total current flowing through the light source may be precisely controlled providing greater accuracy than other methods, such as, for example, PWM or variable pulse frequency. The FD/FF technique may be used in conjunction with any number of light sources, and finds particular application in LED displays and for any type of LED illumination fixture.

REFERENCES:
patent: 4090189 (1978-05-01), Fisler
patent: 4163969 (1979-08-01), Enemark
patent: 4284884 (1981-08-01), Dyment et al.
patent: 4388558 (1983-06-01), Mizuno et al.
patent: 4675575 (1987-06-01), Smith et al.
patent: 4750837 (1988-06-01), Gifford et al.
patent: 4802768 (1989-02-01), Gifford et al.
patent: 5184114 (1993-02-01), Brown
patent: 5317307 (1994-05-01), Thomas, Jr.
patent: 5489771 (1996-02-01), Beach et al.
patent: 5519496 (1996-05-01), Borgert et al.
patent: 5872474 (1999-02-01), Kagomiya et al.
patent: 6016038 (2000-01-01), Mueller et al.
patent: 6150771 (2000-11-01), Perry
patent: 6150774 (2000-11-01), Mueller et al.
patent: 6157661 (2000-12-01), Walker et al.
patent: 6163275 (2000-12-01), Hartzell
patent: 6211626 (2001-04-01), Lys et al.
patent: 6222172 (2001-04-01), Fossum et al.
patent: 6305818 (2001-10-01), Lebens et al.
patent: 6308052 (2001-10-01), Jamali et al.
patent: 6340868 (2002-01-01), Lys et al.
patent: 6367180 (2002-04-01), Weiss et al.
patent: 6488390 (2002-12-01), Lebens et al.
patent: 6504334 (2003-01-01), Sogawa
patent: 6510995 (2003-01-01), Muthu et al.
patent: 6515584 (2003-02-01), DeYoung
patent: 6548967 (2003-04-01), Dowling et al.
patent: 6577080 (2003-06-01), Lys et al.
patent: 6580309 (2003-06-01), Jacobs et al.
patent: 6608453 (2003-08-01), Morgan et al.
patent: 6624597 (2003-09-01), Dowling et al.
patent: 6667869 (2003-12-01), Greenberg
patent: 6693395 (2004-02-01), Wilhelm
patent: 6724376 (2004-04-01), Sakura et al.
patent: 6786625 (2004-09-01), Wesson
patent: 6788011 (2004-09-01), Mueller et al.
patent: 6808287 (2004-10-01), Lebens et al.
patent: 6819303 (2004-11-01), Berger et al.
patent: 6841947 (2005-01-01), Berg-johansen
patent: 6935595 (2005-08-01), Butsch et al.
patent: 6957897 (2005-10-01), Nelson et al.
patent: 6963175 (2005-11-01), Archenhold et al.
patent: 6965205 (2005-11-01), Piepgras et al.
patent: 6967445 (2005-11-01), Jewell et al.
patent: 6975079 (2005-12-01), Lys et al.
patent: 6987787 (2006-01-01), Mick
patent: 6988820 (2006-01-01), Drufva
patent: 7005646 (2006-02-01), Jordanov et al.
patent: 7009440 (2006-03-01), Nogawa et al.
patent: 7014336 (2006-03-01), Ducharme et al.
patent: 7015825 (2006-03-01), Callahan
patent: 7038399 (2006-05-01), Lys et al.
patent: 7038594 (2006-05-01), Voreis et al.
patent: 7057153 (2006-06-01), Linge et al.
patent: 7071894 (2006-07-01), Thielemans et al.
patent: 7091874 (2006-08-01), Smithson
patent: 7095002 (2006-08-01), Kong et al.
patent: 7102801 (2006-09-01), Bliley et al.
patent: 7113541 (2006-09-01), Lys et al.
patent: 7119498 (2006-10-01), Baldwin et al.
patent: 7123211 (2006-10-01), Nowatzyk
patent: 7129652 (2006-10-01), Patel et al.
patent: 7135824 (2006-11-01), Lys et al.
patent: 7161311 (2007-01-01), Mueller et al.
patent: 7164364 (2007-01-01), Ares Losada
patent: 7180252 (2007-02-01), Lys et al.
patent: 7183723 (2007-02-01), Yu et al.
patent: 7186000 (2007-03-01), Lebens et al.
patent: 7265499 (2007-09-01), Ball
patent: 7414862 (2008-08-01), Park
patent: 2003/0016198 (2003-01-01), Nagai et al.

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