Patents by Inventor John D. Vala
John D. Vala has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20130265395Abstract: A system for generation of stereo video imagery. The system includes a first video camera, a second video camera, and an analysis subsystem. Positioning of the first and second video cameras is dynamically adjusted in near real time in response to a control signal that is generated by the analysis subsystem in response to the difference between a disparity signal and a reference parallax signal to dynamically minimize the difference between the disparity signal and the reference parallax signal.Type: ApplicationFiled: April 10, 2012Publication date: October 10, 2013Inventors: John D. Vala, David D. Conger, John-Taylor W. Smith
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Patent number: 6744469Abstract: A method and system provide for real-time compensation of an imaging system for variations in illumination intensity. An illumination system provides reflected illumination, and a charge coupled device system directly detects the reflected illumination from the illumination system. The CCD system then converts the reflected illumination into illumination data and a host processor converts the illumination data into adjusted control data and final image data. The adjusted control data is based on an illumination profile and a reference illumination intensity. The reference illumination intensity is measured before each document with a compensation reference, and is compared to the illumination profile to adjust control parameters in a real-time mode. Directly measuring the illumination intensity with the CCD system allows for a reduction in parts, manufacturing steps, and errors.Type: GrantFiled: December 13, 1999Date of Patent: June 1, 2004Assignee: Unisys CorporationInventors: John C. Gudenburr, William L. Kozlowski, Christopher N. St. John, John D. Vala
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Patent number: 6246464Abstract: In a document processing array, an imaging/illumination arrangement for illuminating and imaging the documents at one or several imaging-sites as they are rapidly transported there-past, each site having, as its illumination source, a hollow Lambertian integrating cylinder housing lamps which project essentially all their light onto the inner cylinder walls to be reflected/diffused thereby in Lambertian fashion and sent to the imaging site(s).Type: GrantFiled: August 26, 1992Date of Patent: June 12, 2001Assignee: Unisys CorporationInventors: John D. Vala, Clive E. Catchpole, Johan P. Bakker, Robert T. Rourke, Paul Stolis, Gary B. Copenhaver, David J. Valice, David J. Concannon
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Patent number: 6178014Abstract: An arrangement for illuminating objects wherein a large number of objects are rapidly and continuously transported past one or more stations, each illuminated by a cylindrical, integrating Lambertian reflecting/diffusing cavity having one or more like light sources therein so as to generate and project a highly intense, highly uniform and highly diffuse beam of illumination, while incorporating optical guide means to couple said illumination beam to the face of the objects at said station and to couple the reflected image of the object back to the cavity.Type: GrantFiled: January 21, 1998Date of Patent: January 23, 2001Assignee: Unisys CorporationInventors: Gary B. Copenhaver, Clive E. Catchpole, Johan P. Bakker, John D. Vala, David J. Concannon
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Patent number: 5825945Abstract: In a check processing array, an imaging/illumination arrangement for illuminating and imaging checks at one or several imaging sites as they are rapidly, continuously transported past two or more imaging stations, each station having, as its illumination source, a hollow Lambertian integrating vessel, housing lamps which project a highly uniform, diffuse Lambertian illumination-beam to its respective imaging site.Type: GrantFiled: May 15, 1992Date of Patent: October 20, 1998Assignee: Unisys CorpInventors: Paul Stolis, John D. Vala, Clive E. Catchpole, Johan P. Bakker, Gary B. Copenhaver, David J. Concannon, Robert T. Rourke, David J. Valice
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Patent number: 5780841Abstract: Document-imager for imaging documents (e.g. checks that are transported past an imaging-site, where the site is illuminated by one (or two) pairs of lamps symmetrically disposed about the site, with image-reflection sent back between lamps to be captured.Type: GrantFiled: January 7, 1997Date of Patent: July 14, 1998Assignee: Unisys Corp.Inventors: Johan P. Bakker, Clive E. Catchpole, David B. Tratar, John D. Vala
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Patent number: 5717504Abstract: An arrangement for illuminating objects wherein a large number of objects are rapidly and continuously transported past one or more stations, each illuminated by a cylindrical, integrating Lambertian reflecting/diffusing cavity having one or more like light sources therein so as to generate and project a highly intense, highly uniform and highly diffuse beam of illumination, while incorporating optical guide means to couple said illumination beam to the face of the objects at said station and to couple the reflected image of the object back to the cavity.Type: GrantFiled: May 6, 1996Date of Patent: February 10, 1998Assignee: Unisys Corp.Inventors: Gary B. Copenhaver, Clive E. Catchpole, Johan P. Bakker, John D. Vala, David J. Concannon
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Patent number: 5591961Abstract: Document-imager for imaging documents (e.g. checks that are transported past an imaging-site, where the site is illuminated by one (or two) pairs of lamps symmetrically disposed about the site, with image-reflection sent back between lamps to be captured.Type: GrantFiled: November 24, 1995Date of Patent: January 7, 1997Assignee: Unisys CorporationInventors: Johan P. Bakker, Clive E. Catchpole, David B. Tratar, John D. Vala
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Patent number: 5519513Abstract: An arrangement for illuminating objects wherein a large number of objects are rapidly and continuously transported past one or more stations, each illuminated by a cylindrical, integrating Lambertian reflecting/diffusing cavity having one or more like light sources therein so as to generate and project a highly intense, highly uniform and highly diffuse beam of illumination, while incorporating optical guide means to couple said illumination beam to the face of the objects at said station and to couple the reflected image of the object back to the cavity.Type: GrantFiled: June 7, 1995Date of Patent: May 21, 1996Assignee: Unisys CorporationInventors: Gary B. Copenhaver, Clive E. Catchpole, Johan P. Bakker, John D. Vala, David J. Concannon
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Patent number: 5513274Abstract: Arrangement for lifting image of checks, with Xenon lamp, Fluorescent lamp or like source of stable-wavelength-output and CCPD Camera means selected to exhibit "close-to-human" spectral response plus a photopic filter, disposed upstream of the Camera and adapted to shift its received image-light spectrum in the direction of that which is optimal for the human-eye.Type: GrantFiled: July 12, 1993Date of Patent: April 30, 1996Assignee: Unisys CorporationInventors: David J. Concannon, John D. Vala, Gerald Banks
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Patent number: 5491336Abstract: An arrangement for illuminating documents in a document-processing system wherein a large number of documents are rapidly and continuously transported past one or more imaging stations, each station having, for illumination, an integrating structure which houses one or more cylindrical, integrating Lambertian reflecting/diffusing cavities, each cavity having one or more like light sources, so that each cavity generates and projects a highly intense, highly uniform and highly diffuse beam of illumination, while incorporating imaging camera means and optical guide means to couple the illumination beam to the face of the documents at the imaging station and to couple the image of the document to the imaging camera.Type: GrantFiled: December 22, 1993Date of Patent: February 13, 1996Assignee: Unisys CorporationInventors: David J. Concannon, Gary B. Copenhaver, Johan P. Bakker, Clive E. Catchpole, John D. Vala
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Patent number: 5471048Abstract: Document-imager for imaging documents (e.g. checks that are transported past an imaging-site, where the site is illuminated by one (or two) pairs of lamps symmetrically disposed about the site, with image-reflection sent back between lamps to be captured.Type: GrantFiled: September 12, 1994Date of Patent: November 28, 1995Assignee: Unisys CorporationInventors: Johan P. Bakker, Clive E. Catchpole, David B. Tratar, John D. Vala
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Patent number: 5453849Abstract: An arrangement for illuminating objects wherein a large number of objects are rapidly and continuously transported past one or more stations, each illuminated by a cylindrical, integrating Lambertian reflecting/diffusing cavity having one or more like light sources therein so as to generate and project a highly intense, highly uniform and highly diffuse beam of illumination, while incorporating optical guide means to couple said illumination beam to the face of the objects at said station and to couple the reflected image of the object back to the cavity.Type: GrantFiled: February 7, 1994Date of Patent: September 26, 1995Assignee: Unisys CorporationInventors: Gary B. Copenhaver, Clive E. Catchpole, Johan P. Bakker, John D. Vala, David J. Concannon
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Patent number: 5371356Abstract: Document-imager for imaging documents (e.g. checks that are transported past an imaging-site, where the site is illuminated by one (or two) pairs of lamps symmetrically disposed about the site, with image-reflection sent back between lamps to be captured.Type: GrantFiled: July 12, 1993Date of Patent: December 6, 1994Assignee: Unisys CorporationInventors: Johan P. Bakker, Clive E. Catchpole, David B. Tratar, John D. Vala
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Patent number: 5272331Abstract: Document-imager for imaging documents (e.g. checks that are transported past an imaging-site, where the site is illuminated by one (or two) pairs of lamps symmetrically disposed about the site, with image-reflection sent back between lamps to be captured.Type: GrantFiled: April 27, 1992Date of Patent: December 21, 1993Assignee: Unisys CorporationInventors: Johan P. Bakker, Clive E. Catchpole, David B. Tratar, John D. Vala
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Patent number: 4622654Abstract: Disclosed is a device and method for the storage and conversion of a light input into a corresponding output with light from another source. The device includes an improved liquid crystal light valve having as a photosensor layer a deposited memory semiconductor material which is reversibily convertible between a first stable, relatively high electrical resistance condition and a second stable, relatively low electrical resistance condition. Each change of state or condition will remain after cessation of the input until stimulated to reverse to the other state, thereby achieving a storage or memory function.Type: GrantFiled: January 16, 1984Date of Patent: November 11, 1986Assignee: Energy Conversion Devices, Inc.Inventors: Zvi Yaniv, David A. Strand, John D. Vala