The operating environment of a moving laser beam in a flying spot, electro-optical reader is simulated in a solid-state, sensor-based imaging reader by turning a visible line produced by a light emitting diode on and off prior to capturing a two-dimensional image of a target....http://www.google.com.au/patents/US6866198?utm_source=gb-gplus-sharePatent US6866198 - Imaging bar code reader with moving beam simulation
