1
Andrew Longacre Jr, Robert M Hussey, Michael A Ehrhart, Thomas J Koziol: Optical reader having improved autodiscrimination features. Welch Allyn, Wall Marjama Bilinski & Burr, October 20, 1998: US05825006 (359 worldwide citation)

A method and apparatus for autodiscriminating and decoding any of a plurality of 1D linear bar code symbols which use different 1D symbologies and of 2D matrix bar code symbols which use different 2D finder patterns and 2D symbologies. A processor stores a plurality of 1D decoding programs, a plural ...


2
Andrew Longacre Jr, Robert M Husssey: Symbol-controlled image data reading system. Welch Allyn Data Collection, Wall Marjama & Bilinski, October 2, 2001: US06298176 (306 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 ...


3
Robert M Hussey, Andrew Longacre Jr: Method for generating real time degree of focus signal for handheld imaging device. Welch Allyn, Wall Marjama & Bilinski, June 30, 1998: US05773810 (304 worldwide citation)

A method for generating, substantially in real time, a user perceptible indication of the degree to which the distance between a handheld imaging device and a target object approximates the in-focus distance therebetween. A stored image of the target object is sampled, in accordance with a pattern o ...


4
Andrew Longacre Jr, Robert M Hussey: Bar code scanner providing aural feedback. Welch Allyn, Harris Beach & Wilcox, May 30, 1995: US05420409 (301 worldwide citation)

A method is disclosed for the reading graphical indicia that are encoded in accordance with a multidimensional symbology. The indicia are repeatedly scanning a signal representative of a pattern thereof until sufficient information is recognized to assure a valid reading operation. The signal, or a ...


5
Andrew Longacre Jr, Rob Hussey: Two dimensional data encoding structure and symbology for use with optical readers. Welch Allyn, Harris Beach & Wilcox, January 7, 1997: US05591956 (297 worldwide citation)

A two dimensional (2D) matrix symbology for use with bar code and other optical readers. A finder structure includes a center square and a plurality of nested squares having centers that approximately coincide with the center square. A symbol descriptor located adjacent to the finder structure encod ...


6
Andrew Longacre Jr, Robert M Hussey: Object sensor system for stationary position optical reader. Welch Allyn, Wall Marjama Bilinski & Burr, September 7, 1999: US05949052 (290 worldwide citation)

The present invention relates to a system for sensing the presence of an object in the field of view of an imaging assembly of a stationary position optical reader. The system includes a specialized symbol disposed in a stationary position in relation to the imaging assembly of a specially configure ...


7
Michael Ehrhart, Andrew Longacre Jr: Optical reader having a color imager. Welch Allyn Data Collection, Wall Marjama & Bilinski, April 20, 2004: US06722569 (278 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 ...


8
Andrew Longacre Jr, Robert M Hussey, Thomas J Koziol, Michael A Ehrhart: Autodiscriminating optical reader. Hand Held Products, Wall Marjama & Bilinski, December 10, 2002: US06491223 (278 worldwide citation)

A method and apparatus for autodiscriminating and decoding any of a plurality of 1D linear bar code symbols which use different 1D symbologies and of 2D matrix bar code symbols which use different 2D finder patterns and 2D symbologies. A processor stores a plurality of 1D decoding programs, a plural ...


9
Andrew Longacre Jr: Method and apparatus for capturing a decodable representation of a 2D bar code symbol using a hand-held reader having a 1D image sensor. Welch Allyn, Wall Marjama & Bilinski, June 30, 1998: US05773806 (276 worldwide citation)

A method and apparatus for capturing and storing a decodable representation of a 1D or 2D bar code symbol using a hand-held bar code reader having only a 1D image sensor. A succession of 1D digital representations are produced as the reader is moved asynchronously across the symbol to be read. These ...


10
Robert M Hussey, Andrew Longacre Jr, Michael A Ehrhart, Thomas J Koziol: Optical reader having improved scanning-decoding features. Welch Allyn, Wall Marjama Bilinski & Burr, August 3, 1999: US05932862 (275 worldwide citation)

An optical reading apparatus for scanning and decoding data encoded in any of a plurality of types of 1D and 2D bar code symbols. A scanner generates successive blocks of scan data for storage in a scan memory. The scan memory stores at least one complete block of scan data in one address space ther ...