LED driver device

Details LED driver device LED driver device

2007-11-13

2007-11-13

Owens, Douglas W. (Department: 2821)

Electric lamp and discharge devices: systems

With radiant energy sensitive control means

Radiant energy controlled regulation of the current supply...

C315S169300, C315S169100, C345S204000, C345S082000

Reexamination Certificate

active

11338638

ABSTRACT:
A light emitting diode (LED) driver drives a plurality of LEDs, and includes a plurality of LED drivers with inherent addresses thereof respectively driving the plurality of LEDs; a serial bus connected to the plurality of LED drivers; and a sequence controller serially transmitting a control signal for driving the plurality of LEDs and the inherent addresses, allowing the plurality of LED drivers to be sequentially driven, in the form of digital data through the serial bus. Thus, the LED driver accomplishes appropriate response speed corresponding to a human eye's recognition limit. Further, the LED driver provides easy fabrication, small size and lower production cost. The LED driver generates less noise while large current and high voltage fluctuate. Also, the LED driver automatically detects malfunction and automates initial current setting for production.

REFERENCES:
patent: 5257039 (1993-10-01), Chung et al.
patent: 6943761 (2005-09-01), Everitt
patent: 6963321 (2005-11-01), Everitt
patent: 2000-293119 (2000-10-01), None
patent: 1994-0002292 (1994-03-01), None
patent: 1996-0001558 (1996-02-01), None

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