초록 ▼

A portable data collection device having an imaging based dataform reader utilizing a binarization process to identify an imaged dataform or signature area with a target image area. An imaging assembly is provided that includes a board camera having black and white circuitry and generates a composit

A portable data collection device having an imaging based dataform reader utilizing a binarization process to identify an imaged dataform or signature area with a target image area. 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. 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 a dataform reading mode or in a signature area capture mode, binarization circuitry is provided that binarizes gray scale values generated from the composite video signal and examines the binary values to identify the imaged dataform or signature area. When operating in the signature area capture mode, the binarized data corresponding to the signature area is subject to data compression before being output. When operating in the dataform reading mode, the binarized data corresponding to the dataform are operated on by cell extraction circuitry and dataform decoding circuitry to decode the imaged dataform.

대표청구항 ▼

[ I claim:] [1.] A dataform reader module for a portable data collection device, the dataform reader module comprising:a) a modular housing defining an internal region;b) a two dimensional imaging assembly including a two dimensional photosensor array supported within the housing internal region, th

[ I claim:] [1.] A dataform reader module for a portable data collection device, the dataform reader module comprising:a) a modular housing defining an internal region;b) a two dimensional imaging assembly including a two dimensional photosensor array supported within the housing internal region, the imaging assembly when actuated generating a composite video signal representative of successive frames of an image of a target area including a target object;c) an optics assembly supported by the modular housing for focusing an image of the target area including the target object onto the photosensor array; andd) the imaging assembly further including:i) signal processing circuitry receiving the composite video signal and converting a portion of the composite video signal corresponding to an image frame into a set of digital data representative of an image of the target area, the set of digital data including a plurality of digital data values corresponding to respective different image pixels of the imaged target area, each of the plurality of digital data values comprising a plurality of bits; andii) image processing circuitry selectively actuatable to receive the set of digital data generated by the signal processing circuitry, the image processing circuitry including binarization and zoning circuitry to:convert selected digital data values in the plurality of digital data into a set of binary data values, a single bit binary data value being generated for each digital data value; andidentify a subset of binary data values of the set of binary data values corresponding to an image of the target object; andiii) the image processing system processing the identified subset of binary data values to generate a set of output data.