Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
May 12, 2009
Patent Application Number
10982834
Date Filed
November 8, 2004
Patent Primary Examiner
Patent abstract
A printed media, such as a card bears a visible light image, such as a picture or photograph, for viewing by a human. A machine readable array of infra-red dots is located over the visible light image. In a preferred embodiment the infra-red dots encode sound recording data associated with the visible light image. Solomon-Reed encoding and checkerboard modulation of the dots is employed to ensure reliable retrieval of the sound recording.
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