The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 04, 2013
Filed:
Jun. 19, 2012
Daniel Ryan, North Andover, MA (US);
Aaron Ganick, Medford, MA (US);
Daniel Ryan, North Andover, MA (US);
Aaron Ganick, Medford, MA (US);
ByteLight, Inc., Boston, MA (US);
Abstract
In one aspect, the present disclosure relates to a method for broadcasting a modulated digital pulse recognition signal from a light source. In some embodiments, the method includes selecting one or more digital pulse recognition tones to broadcast, determining a desired brightness level for the light source, generating a digital pulse recognition signal having a duty cycle based on the desired brightness level and a frequency based on the one or more digital pulse recognition tones, and driving the output of the light source with the digital pulse recognition signal. In some embodiments, selecting one or more digital pulse recognition tones to broadcast includes generating a single periodic tone for differentiating the light source from a nearby light source. In some embodiments, selecting one or more digital pulse recognition tones to broadcast includes generating a sequence of periodic tones.