Exemplary apparatus, method and system embodiments provide for separately and independently sourcing current to a series of light emitting diodes of a plurality of series of light-emitting diodes. An exemplary apparatus comprises a power converter which generates a current, a first multiplexer, and a...http://www.google.com/patents/US20080116818?utm_source=gb-gplus-sharePatent US20080116818 - Time division modulation with average current regulation for independent control of arrays of light emitting diodes
