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| Number | Title | Issue Date |
| 7243850 | Data reader for multi-mode operation A data reader and method for data reading, such as a barcode scanner, wherein the scan pattern generating optics and other features are optimized for different modes of operation. In a preferred embodiment, different patterns are projected from different apertures i... | 07/17/2007 |
| 7215493 | Imaging system with a lens having increased light collection efficiency and a deblurring equalizer In one form, an imaging system comprises an imager that forms an image of an object in a field of view, a rotationally symmetric lens assembly disposed between the imager and the object, and an equalizer. The rotationally symmetric lens assembly provides increased c... | 05/08/2007 |
| 7204422 | System, circuit, and method for edge detection in a binary optical code Systems process an input signal, derived from a binary optical code, having a series of multiple successive local peaks of the same given polarity. The circuit comprises a peak detector, a node in the peak detector, and a set-reset flip-flop. The peak detector has a... | 04/17/2007 |
| 7201322 | System, circuit, and method for edge detection in a binary optical code Systems better detect transitions in a binary optical code signal and thus better detect edges in binary optical codes, such as bar codes. The optical code signal imperfectly indicates perceived regions of relatively dark and light areas arranged in an alternating p... | 04/10/2007 |
| 7198195 | Multiple plane scanning system for data reading applications An optical system and method for data reading. A preferred system is directed to a scanner which includes a laser diode and a beam splitter for generating first optical beam and a second optical beam, the first optical beam being directed toward one side of a scanni... | 04/03/2007 |
| 6012639 | Edge detection method and apparatus for shot noise limited signals A method and apparatus for improving the accuracy of bar and space measurements in a barcode scanner system utilizing second derivative signal processing is provided wherein edges are more accurately detected under low signal-to-noise conditions, such as ... | 01/11/2000 |
