METHOD AND SYSTEM FOR MODIFYING A BEACON LIGHT SOURCE FOR USE IN A LIGHT BASED POSITIONING SYSTEM

摘要

In one aspect, the present disclosure related to a method for modifying a beacon light source for use in a light-based positioning system. In some embodiments, the method includes selecting a modulation scheme for the light source, determining a duty cycle for the light source based on the modulation scheme, the duty cycle having a proportion of time the light source is in an on state and a corresponding proportion of time the light source is in an off state, the proportion of time the light source is in an off state resulting in reduced luminosity of the light source, and supplying additional power to the light source to compensate for the reduced luminosity of the light source by the duty cycle.

主权项

1. A method for modulating a light source in a light based positioning system, the method comprising:
selecting a modulation scheme for the light source, wherein the modulation scheme periodically varies an output of the light source from a peak output level to a bottom output level; adding a DC bias to the modulation scheme; applying the modulation scheme with the DC bias to the light source, wherein: the DC bias reduces a required power for the peak output level to achieve a given brightness by increasing the bottom output level of the modulation scheme, the peak output level is increased beyond an un-modulated output of the light source, and an average output of the light source is equal to the un-modulated output of the light source.