Hand-supportable code symbol reader employing coplanar laser illumination and linear imaging
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United States of America Patent
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Jan 12, 2010
Grant Date -
May 22, 2008
app pub date -
Oct 11, 2007
filing date -
Jun 7, 1999
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Abstract
A hand-supportable planar laser illumination and imaging (PLIIM) based code symbol reader includes: a hand-supportable housing having a light transmission aperture; a linear image formation and detection module having a linear image detection array; and a planar laser illumination beam (PLIB) producing device having at least one visible laser diode (VLD) for producing a planar laser illumination beam (PLIB). The code symbol reader further includes an image grabber for grabbing digital linear images formed and detected by the image formation and detection module, an image data buffer for buffering the digital linear images grabbed by the image grabber and constructing a two-dimensional digital image from a series of buffered linear digital images, and an image processing computer for processing the two-dimensional digital image so as to read code symbols graphically represented in the two-dimensional digital image.
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