Generating pulse width modulated waveforms to digitally drive pixels

An apparatus, comprising:

• a first display element;
• and
• a waveform generator operably coupled to the first display element to receive at the first display element first digital data indicative of an optical output from the first display element and second digital data indicative of a common reference with respect to a second display element to generate for said first display element a modulated signal including one transition separating a first pulse interval from a second pulse interval based on said first and second digital data.

A processor-based system, comprising:

• a plurality of pixel cells forming a pixel array;
• and
• a plurality of drive circuits each drive circuit associated with a different pixel cell of the pixel array to receive first digital data indicative of an optical output from said different pixel cell and receive second digital data indicative of a common reference for said plurality of pixel cells to generate for said different pixel cell a modulated signal including one transition separating a first pulse interval from a second pulse interval based on said first and second digital data.