DEVICES AND METHODS TO PRODUCE AND RECEIVE AN ENCODED LIGHT SIGNATURE

摘要

A signature encoded light system includes at least one light source. The at least one light source is configured to output a first encoded light signature embedded within light in the visible spectrum. A light signature detection device is configured to receive a composite light signal formed with light from the at least one light source and ambient light. The light signature detection device is configured to identify the first encoded light signature.

主权项

1. A signature encoded light receiver, comprising:
a processor to direct operations of the signature encoded light receiver; a photo-sensitive device arranged to receive a composite light signal and arranged to pass a plurality of composite light signal samples wherein each sample represents an amplitude of the composite light signal at a point in time, the composite light signal formed with modulated light from at least one light source and ambient light; and a signal processing inference engine to identify a first encoded light signature using a transform-based computation applied to the plurality of composite light signal samples, the transform-based computation including calculation of a plurality of correlation values from the plurality of composite light signal samples, isolation of at least one correlation value, and identification of the first encoded light signature after receiving only a portion of the first encoded light signature.