1
H Sprague Ackley: High resolution laser imager for low contrast symbology. Intermec IP, O&apos Melveny & Myers, December 18, 2001: US06330974 (180 worldwide citation)

An apparatus that permits high resolution imaging of low contrast one and two-dimensional symbols includes a housing having a window and an electro-optical element disposed within the housing behind the window. At least two laser diodes are mounted externally to the housing adjacent to the window. T ...


2
H Sprague Ackley: Method and apparatus for utilizing specular light to image low contrast symbols. Intermec IP, O&apos Melveny & Myers, April 9, 2002: US06367699 (174 worldwide citation)

An apparatus and method for imaging low contrast one and two-dimensional symbols are provided. A light source directs light onto a target that includes a low contrast symbol. An imaging element receives light reflected off of the target and creates an image of the target therefrom. A light level det ...


3
H Sprague Ackley: Machine-readable color symbology and method and apparatus for reading same with standard readers such as laser scanners. Intermec IP Corporation, Seed IP Law Group PLLC, November 12, 2002: US06478223 (137 worldwide citation)

A color symbology, such as a bar code symbology, employs three or more colors to encode elements of one or more integer-widths. A light source or an appropriate filter of a color matched to one color of the symbology produces peaks in a reflectance signal produced from a light sensor, which receives ...


4
H Sprague Ackley, Richard Steward Penn: Method and apparatus for reading machine-readable symbols including color symbol elements. Intermec IP, Seed IP Law Group PLLC, April 23, 2002: US06375075 (130 worldwide citation)

A symbol reader employs an optical element having first and second optical axes positioned to image a same portion of a color coded symbol onto two different portions of an image sensor. The reader includes one or more filters to remove different color portions of the light reflected from the symbol ...


5
H Sprague Ackley, Christopher A Wiklof: Method and apparatus for associating data with a wireless memory device. Intermec IP, Seed IP Law Group PLLC, April 16, 2002: US06371375 (121 worldwide citation)

A system for storing and retrieving data comprises a memory device, such as a radio frequency tag, having a memory for storing the data, a first identifier stored in the memory, and a machine-readable symbol associated with the memory device. At least a portion of the machine-readable symbol encodes ...


6
H Sprague Ackley, Alain Gillet: Autofocus lens system for indicia readers. Hand Held Products, Additon Higgins & Pendleton P A, December 29, 2015: US09224022 (107 worldwide citation)

An autofocus lens system includes no conventional moving parts and has excellent speed and low power consumption. The system includes a small electronically-controlled focusing-module lens. The focusing-module lens includes two adjustable polymeric surfaces (e.g., two adjustable-surface lenses in a ...


7
H Sprague Ackley: System and method for detecting barcode printing errors. Hand Held Products, Additon Higgins & Pendleton P A, January 5, 2016: US09230140 (107 worldwide citation)

Barcode verifiers automate the verification process by capturing an image of the printed barcode and analyzing the image according to an industry specification. Industry specifications (e.g., ISO/IEC 15416,15415) identify common printing errors and prescribe test methods for detecting and quantifyin ...


8
H Sprague Ackley, Pavel A Maltsev, Michael Ohanian: Universal data input and processing device, such as universal point-of-sale device for inputting and processing bar code symbols, document images, and other data. Intermec IP, Perkins Coie, March 6, 2001: US06199044 (101 worldwide citation)

A universal data input device includes a processor coupled to memory and a two-dimensional or area imager. One or more additional data input modules input wireless (e.g., RF), audio (e.g., voice), card or other data. Software performed by the processor receives the input data, and in one embodiment, ...


9
H Sprague Ackley: Generic handheld symbology scanner with a modular optical sensor. Intermec IP, Graham & James, December 21, 1999: US06003775 (85 worldwide citation)

A scanning apparatus comprises a scanner body portion having an internal receptacle within a scan head portion thereof. A scanning control unit is disposed within the body portion separate from the receptacle and has an electrical connection that extends through the body portion to the receptacle. A ...


10
H Sprague Ackley: Method and apparatus for decoding unresolved complex multi-width bar code symbology profiles. Intermec Corporation, Seed and Berry, May 7, 1996: US05514858 (70 worldwide citation)

A method and apparatus for decoding profiles which fail to resolve narrow elements in complex multi-width symbols, first begins by identifying which elements in the profile are resolved. Second, the environments surrounding each resolved element are examined. Third, several closure boundaries are de ...