Device for reading encoded data interspersed in a printed image

Details Device for reading encoded data interspersed in a printed image Device for reading encoded data interspersed in a printed image

2011-08-02

2011-08-02

Lett, Thomas J (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Specific to image source

C358S001900, C358S003280, C358S464000, C382S100000

Reexamination Certificate

active

07990571

ABSTRACT:
An apparatus for reading data encoded as an array of dots printed on a substrate together with an image. The dots of the array are substantially invisible to an average unaided human eye. The apparatus includes a light source for illuminating the substrate; a detector for receiving the illumination from the light source reflected off the substrate, the detector outputting a first signal representative of the array of dots, the detector extending a distance that is less than a width of the substrate; a decoder interconnected to said detector for receiving and decoding said first signal to obtain the data encoded by the array of dots; and a top substrate covering the detector and the light source. The top substrate has an emission portion and a reception portion. The emission portion is shaped with a semicircular cross section adapted to focus illumination from the light source onto the substrate. The reception portion is shaped to define a series of microlenses adapted to focus illumination reflected off the substrate into the detector.

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