Method and apparatus for embedding information in an image
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United States of America Patent
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Feb 12, 2008
Grant Date -
Jun 29, 2006
app pub date -
Dec 23, 2004
filing date -
Dec 23, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A method and apparatus for embedding information in an image during relative movement between a print medium and an ink jet print head is provided. A plurality of first lines are printed and a plurality of second lines are printed. Each of the first lines includes a plurality of first dots and a plurality of second dots offset from the first dots by a first amount, and each of the second lines includes a plurality of third dots and a plurality of fourth dots offset from the third dots by a second amount different than the first amount. The information is encoded in the image using an encoding scheme in which the first lines represent a first value in the encoding scheme and the second lines represent a second value in the encoding scheme.
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