LED-based optical system and method of compensating for...

Details LED-based optical system and method of compensating for... LED-based optical system and method of compensating for...

2011-04-05

2011-04-05

Abdulselam, Abbas I (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S083000, C345S084000, C362S236000, C362S249020, C362S612000, C362S613000

Reexamination Certificate

active

07920111

ABSTRACT:
An LED-based optical system and a method of compensating for aging thereof are provided. The LED-based optical system includes LED blocks composed of a predetermined number of LEDs; a sensor which senses output values of the respective LED blocks; and a control block which generates compensation rates by comparing initial output values of the respective LED blocks in an initial state with comparison output values of the LED blocks sensed by the sensor at a comparison time point, and controls current being supplied to the respective LED blocks in accordance with the compensation rates.

REFERENCES:
patent: 6153985 (2000-11-01), Grossman
patent: 7515260 (2009-04-01), Hagler
patent: 7615939 (2009-11-01), Halter
patent: 2006-0043823 (2006-05-01), None
patent: 2005/116972 (2005-12-01), None

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