21
Carl W Gerst III, Andrew Longacre Jr: Optical reader configured to accurately and rapidly read multiple symbols. Welch Allyn, Wall Marjama Bilinski & Burr, June 22, 1999: US05914476 (250 worldwide citation)


In the present invention, an optical reader is made to commence image capture and decoding when a trigger of the reader is pulled, and to continuously attempt to decode symbols in captured image data until the time the trigger is released. Despite continuously attempting to decode symbols during the ...


22
James A Parker, Jeffrey Pine, Thomas J Koziol, Michael A Ehrhart, Andrew Longacre Jr, Robert M Hussey: Optical reader system comprising local host processor and optical reader. Welch Allyn, Wall Marjama Bilinski & Burr, October 12, 1999: US05965863 (249 worldwide citation)


The invention relates to an optical reading system comprising an optical reader and a host processor which is adapted for reprogramming the reader and for other interactions with the reader. In one aspect of the invention the host processor may be configured to read a parameter table stored in a mem ...


23
Andrew Longacre Jr: One-dimensional bar code symbology and method of using same. Welch Allyn, Harris Beach & Wilcox, December 26, 1995: US05479515 (247 worldwide citation)


A linear bar code symbology combines delta distance start and stop patterns, a space efficient, bit oriented data character structure, and Reed-Solomon redundancy for error detection and correction. A method of writing the bar code structures onto a character medium and reading the resulting symbols ...


24
Andrew Longacre Jr, Robert M Hussey, John M Pidhirny: Apparatus for optimizing throughput in decoded-output scanners and method of using same. Welch Allyn, Harris Beach & Wilcox, October 31, 1995: US05463214 (237 worldwide citation)


A method of improving throughput in a scanner whose scanning action is capable of being stopped and started instantly, comprising the steps of A) storing results of a first scan of a target containing indicia in a first region of a memory and B) upon determining that the first scan is complete 1) de ...


25
Andrew Longacre Jr, Charles M Hammond Jr, William H Havens, John M Pidhirny: Method of programmable digitization and bar code scanning apparatus employing same. Welch Allyn, Harris Beach & Wilcox, February 15, 1994: US05286960 (235 worldwide citation)


A method and apparatus are provided for detecting bar-space and space-bar transitions in a bar code symbol. A sequence of sparsely sampled analog signals from a photodetector in a bar code scanner is representative of the reflectance pattern of a symbol.


26
Andrew Longacre Jr, Robert M Hussey: Apparatus for optimizing throughput in decoded-output scanners and method of using same. Welch Allyn, Wall Marjama Bilinski & Burr, August 24, 1999: US05942741 (231 worldwide citation)


A method and apparatus for optimizing the data throughput of decoded-output scanners by maintaining a tracking relationship between the scanning and decoding operations thereof. Data is scanned from an indicia to be read on an uninterrupted cyclic basis and stored in memory. Also stored is continuou ...


27
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 ...


28
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 ...


29
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 ...


30
Thomas W Karpen, Dennis W McEnery, Robert C Gardiner, John A Pettinelli: Exposure control apparatus for use with optical readers. Welch Allyn, Wall Marjama Bilinski & Burr, November 3, 1998: US05831254 (218 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 time averaged value of the illumination l ...



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