Appeal No. 2001-1342
Application 08/994,821
Independent claim 1 present in the application is reproduced
as follows:
1. A dataform reader for a portable data collection device,
the dataform reader utilizing a single two dimensional imaging
assembly adapted to independently image and decode first and
second overlying dataforms, the first dataform being imaged when
illuminated by illumination having a first wavelength and the
second dataform being imaged when illuminated by illumination
having a second wavelength, the first and second wavelengths
being different, the dataform reader comprising:
a) the single two dimensional imaging assembly including a
two dimensional photosensor array, the imaging assembly
actuatable to generate a signal representative of an image of a
target area of the imaging assembly, the target area image
resulting from an illumination pattern received from the target
area;
b) the imaging assembly including signal and image
processing circuitry for processing and decoding an image of a
dataform positioned in the target area;
c) an optic assembly positioned with respect to the imaging
assembly to focus the reflected illumination from the target area
onto the photosensor array;
d) an illumination assembly including a first illumination
source energizable to generate illumination having a first range
of wavelengths and a second illumination source energizable to
generate illumination having a second range of wavelengths, the
first range of wavelengths including the first wavelength and not
including the second wavelength and the second range of
wavelengths including the second wavelength and not including the
first wavelength, the first and second illumination sources being
positioned to illuminate the target area when actuated;
e) control and selection circuitry electrically coupled to
the imaging assembly and the illumination assembly to actuate the
imaging assembly and selectively energize the first illumination
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