Registers – Coded record sensors – Particular sensor structure
Patent
1997-06-25
2000-05-16
Le, Thien M.
Registers
Coded record sensors
Particular sensor structure
23546201, G06K 710
Patent
active
060624752
ABSTRACT:
A portable data collection device providing for dataform decoding and color imaging. An imaging assembly is provided that includes a board camera having black and white circuitry and generates a composite video signal representing an image of a target area of the imaging assembly when actuated. The imaging assembly includes a two dimensional photosensor array overlaid by a color filter having a repeating pattern of four color filter elements. The imaging assembly is selectively actuatable with a first trigger for reading a target dataform in the imaging assembly's target area and actuatable with a second trigger for capturing a image of the target object in the target area. When the device is operated in the dataform reading mode, compensation circuitry is actuated to operate on digital gray scale values extracted from the composite video signal to adjust gray scale value magnitudes to compensate for the transmittivity differences of the color filter elements to improve decodability of the imaged dataform. When the device is operated in the imaging mode, conversion circuitry is actuated to convert the gray scale values to either Y-C or RGB digital data and a D/A converter further processes the Y-C or RGB digital data to provide an analog Y-C or RGB output signal.
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Title: Metanetics Corporation IR-2000 Hand Held Image Reader User's Guide. To the best of Applicant's knowledge, this publication was published more than one year prior to the filing date of the above-named patent application.
Le Thien M.
Metanetics Corporation
Sherr Daniel H.
LandOfFree
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