Patent ID: 6874688

Claim:
A data collection signal processor in an electro-optical reader operative for scanning indicia with light in successive scans across the indicia, comprising: a) a sensor for collecting light reflected off the indicia for each scan, and for generating an analog signal indicative of light intensity of the reflected light collected by the sensor for each scan; b) a filter having a bandpass characteristic for filtering the analog signal to produce a filtered analog signal during one of the scans; c) a digitizer circuit for digitizing the filtered analog signal to produce a pair of digitized signals for each scan; d) a controller for decoding the digitized signals for each scan, for generating a data output signal when one of the digitized signals has been decoded to signify that the indicia has been successfully read; and e) a control component operatively connected to the controller for changing the bandpass characteristic of the filter to produce a differently filtered analog signal during another scan subsequent to said one scan.