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:
Oct. 29, 2019
Filed:
Dec. 30, 2016
Garmin Switzerland Gmbh, Schaffhausen, CH;
Garmin Switzerland GmbH, , CH;
Abstract
A coded-light communication device is described, in which the communication has an initial signal-to-noise ratio, which varies according to the lighting conditions. The device comprises at least one photodetector-type light receiver comprising an anode and a cathode and having an initial shunt resistance. The receiver is capable of being simultaneously exposed to a coded light source carrying a signal and a non-coded light source. The anode and cathode are short-circuited by at least one short-circuit resistance arranged inside the photodetector, having a value selected so that the new value of the shunt resistance of the photodetector resulting from the connection of the initial shunt resistance and the short-circuit resistance gives the communication device a new resultant signal-to-noise ratio which remains substantially independent of the intensity of the non-coded light.