Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 16, 2011
Patent Application Number
12029144
Date Filed
February 11, 2008
Patent Primary Examiner
Patent abstract
The present invention relates to a method in a sending device for sending information to a receiving device. The sending device is adapted to emit electromagnetic radiation with different wavelengths. The method comprises sending electromagnetic radiation of a norm wavelength to the receiving device and sending electromagnetic radiation of a second wavelength to the receiving device. The difference between the first wavelength and the second wavelength per time unit represents information to be sent to the receiving device.
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