1
Andrew Longacre Jr, Robert M Husssey: Symbol-controlled image data reading system. Welch Allyn Data Collection, Wall Marjama & Bilinski, October 2, 2001: US06298176 (305 worldwide citation)


The invention relates to a system for imaging a scene comprising an optical reader and a specially structured symbol configured complementarily with the reader so that when the reader reads the symbol, the reader reads image data in an image data reading region. The image reading instruction symbol ...


2
Michael Ehrhart, Andrew Longacre Jr: Optical reader having a color imager. Welch Allyn Data Collection, Wall Marjama & Bilinski, April 20, 2004: US06722569 (277 worldwide citation)


The present invention relates to an optical reader that includes a color imaging assembly that generates color imaging data. An image analysis circuit determines if the acquired image should be characterized as a color photograph or as including a graphical symbol. A processing circuit processes the ...


3
William H Havens, Charles M Hammond: Method and apparatus for extending operating range of bar code scanner. Welch Allyn Data Collection, Wall Marjama & Bilinski, April 15, 2003: US06547139 (224 worldwide citation)


The operating depth of field for a bar code scanner, preferably a laser scanner, is increased by placing a cubic phase mask (CPM) in the scanning beam. The masked beam is then scanned and reflected off a bar code and received by a photodetector. The received signal is then processed to recover the o ...


4
David Marrs, Louis Bruno, Joseph Guszcza, Timothy Meier, Matthew Pankow, James A Parker, John Pettinelli, Bradley Randolph, Andrew Reynolds, Thomas Ruhlman: Multiple application multiterminal data collection network. Welch Allyn Data Collection, Wall Marjama & Bilinski, December 19, 2000: US06161760 (222 worldwide citation)


The invention is a multiterminal data collection network including a plurality of terminals and a base station configured so that each data collection terminal can be programmed in accordance with one of a predetermined number of available application. When a data collection terminal such as a bar c ...


5
John A Pettinelli, Dennis McEnery: Optical reader exposure control apparatus comprising illumination level detection circuitry. Welch Allyn Data Collection, Wall Marjama & Bilinski, July 3, 2001: US06254003 (222 worldwide citation)


An exposure control apparatus for use with optical readers, such as bar code readers, which utilize photosensitive image sensors. An illumination signal generating circuit generates an illumination signal having a magnitude that varies in accordance with the illumination level at the image sensor. A ...


6
John M Pidhirny, Richard A Monroe, Michael J Pileski, Robert J Wood: Two-dimensional part reader having a focussing guide. Welch Allyn Data Collection, Wall Marjama Bilinski & Burr, April 4, 2000: US06045047 (217 worldwide citation)


An optical reader is suitable for reading 2-dimensional indicia. The optical reading device, that may include a bar code reader, comprises a guide whose length along the optical reader optical axis is such that when that guide contacts the part or equipment surrounding the indicia to be read, that i ...


7
Timothy P Meier, Robert M Hussey, Charles P Barber: Indicia sensor system for optical reader. Welch Allyn Data Collection, Wall Marjama & Bilinski, July 1, 2003: US06585159 (211 worldwide citation)


In the present invention, the control unit of an optical reader analyzes image data being generated by the imaging element of the reader and changes the mode of operation of the reader if the image data indicates that machine readable indicia, such as a bar code symbol or a text character, is likely ...


8
Eric D Schwartz, Edward B Hubben, Brian L Jovanovski, Vivian L Hunter, Melvin D McCall, Gerard F Beckhusen: Adjustable illumination system for a barcode scanner. Welch Allyn Data Collection, Wall Marjama & Bilinski, April 16, 2002: US06371374 (204 worldwide citation)


An apparatus for adjusting the position of a line of light in barcode space that includes a support frame having a rear housing containing a solid state imager and a pair of support arms extending forwardly from the front of the housing. An imaging lens is mounted between the arms for focusing an im ...


9
Andrew Longacre Jr: Image data binarization methods enabling optical reader to read fine print indicia. Welch Allyn Data Collection, George S Blasiak, Wall Marjama & Bilinski, June 10, 2003: US06575367 (202 worldwide citation)


In the present invention, a bar code reader captures an initial image map corresponding to a scene, then subjects the initial image map to an interpolation step wherein values for constructed pixels positionally intermediate pixel values of the initial image map are interpolated as a function of the ...


10
Eric D Schwartz, Edward B Hubben, Brian L Jovanovski, Vivian L Hunter, Melvin D McCall, Gerard F Beckhusen: Adjustable illumination system for a barcode scanner. Welch Allyn Data Collection, Wall Marjama & Bilinski, December 26, 2000: US06164544 (196 worldwide citation)


These and other objects of the present invention are attained by apparatus for adjusting the position of a line of light in barcode space that includes a support frame having a rear housing containing a solid state imager and a pair of support arms extending forwardly from the front of the housing. ...



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