Patents by Inventor Matthew Gelhaus

Matthew Gelhaus 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).

  • Patent number: 7936362
    Abstract: A method is disclosed for spreading a non-periodic color signal sent to a spatial light modulator across a frame period. The method can include the operation of dividing a frame period into a plurality of time slices. A further operation can be assigning a color to each of the plurality time slices. Another operation can be interleaving one or more colors assigned to the time slices across the frame period in a non-periodic manner.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: May 3, 2011
    Assignee: Hewlett-Packard Development Company L.P.
    Inventors: Matthew Gelhaus, Winthrop D. Childers, Art Piehl, Jim Przybyla, Adam Ghozeil, Eric T. Martin
  • Publication number: 20070058087
    Abstract: Disclosed are embodiments of a system and method for processing an image. An image processing unit includes a processor unit and a control unit. The processor unit receives an incoming video signal. The control unit defines image frames from the video signal. The image frames have bit planes in a plurality of spatial segments for manifestation on a spatial light modulator. The control unit also defines on and off states for a solid state light source. The control unit modulates the solid state light source at a modulated level during at least one bit plane such that illumination of the solid state light source at the modulated level is equally applied during the at least one bit plane for each of the plurality of spatial segments.
    Type: Application
    Filed: September 15, 2005
    Publication date: March 15, 2007
    Inventors: Wiatt Kettle, Matthew Gelhaus
  • Publication number: 20060250423
    Abstract: One embodiment provides a method that includes displaying Boolean combinations of two or more bit planes.
    Type: Application
    Filed: May 9, 2005
    Publication date: November 9, 2006
    Inventors: Wiatt Kettle, Brett Dahlgren, Matthew Gelhaus
  • Patent number: 7088566
    Abstract: A charge control circuit for controlling a micro-electromechanical system (MEMS) device having variable capacitor formed by first conductive plate and a second conductive plate separated by a variable gap distance. The charge control circuit comprises a switch circuit configured to receive a reference voltage having a selected voltage level and configured to respond to an enable signal having a duration at least as long as an electrical time constant constant of the MEMS device, but shorter than a mechanical time constant of the MEMS device, to apply the selected voltage level across the first and second plates for the duration to thereby cause a stored charge having a desired magnitude to accumulate on the variable capacitor, wherein the variable gap distance is a function of the magnitude of the stored charge.
    Type: Grant
    Filed: September 15, 2004
    Date of Patent: August 8, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Eric T. Martin, Mark Hunter, Arthur Piehl, James R. Przybyla, Matthew Gelhaus, Leslie Louis Szepesi, Jr.
  • Publication number: 20060164443
    Abstract: For each bit plane of a plurality of bit planes of a pixel, a first spatial light modulator is modulated in accordance with a value of the bit plane. For each bit plane of at least one of the plurality of bit planes of the pixel, a second spatial light modulator is modulated in accordance with the value of the bit plane as logically OR'ed with values of corresponding bit planes of neighboring pixels to the pixel.
    Type: Application
    Filed: January 26, 2005
    Publication date: July 27, 2006
    Inventors: Wiatt Kettle, Matthew Gelhaus, Brett Dahlgren, Karsten Wilson, Kean Lee
  • Publication number: 20060023000
    Abstract: A method is disclosed for spreading a non-periodic color signal sent to a spatial light modulator across a frame period. The method can include the operation of dividing a frame period into a plurality of time slices. A further operation can be assigning a color to each of the plurality time slices. Another operation can be interleaving one or more colors assigned to the time slices across the frame period in a non-periodic manner.
    Type: Application
    Filed: July 30, 2004
    Publication date: February 2, 2006
    Inventors: Matthew Gelhaus, Winthrop Childers, Art Piehl, Jim Przybyla, Adam Ghozeil, Eric Martin
  • Patent number: 6963440
    Abstract: A light delivery device defining an optical path with a feedback device is disclosed. The feedback device dispatches actual illumination characteristics of the light delivery device to a control system, which compares the actual illumination characteristics with desired illumination characteristics to determine an offset for driving the light delivery device.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: November 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Eric T. Martin, Adam L Ghozeil, Matthew Gelhaus
  • Publication number: 20050179979
    Abstract: A light delivery device defining an optical path with a feedback device is disclosed. The feedback device dispatches actual illumination characteristics of the light delivery device to a control system, which compares the actual illumination characteristics with desired illumination characteristics to determine an offset for driving the light delivery device.
    Type: Application
    Filed: February 13, 2004
    Publication date: August 18, 2005
    Inventors: Eric Martin, Adam Ghozeil, Matthew Gelhaus
  • Publication number: 20050068360
    Abstract: An image-forming device of one embodiment of the invention is disclosed that includes an image-forming mechanism, a sensor, and a controller. The image-forming mechanism is to form images on media. The mechanism includes a first media path in which media is moved through the mechanism during image formation thereon, and a second media path in which the media is manually inserted and remains stationary within the mechanism during image formation thereon. The media is manually inserted into the image-forming device, and remains stationary within the device during image formation thereon. The sensor is to detect manual insertion of the media, and the controller is to cause the image-forming mechanism to form an image on the media in response to the sensor detecting manual insertion of the media.
    Type: Application
    Filed: September 27, 2003
    Publication date: March 31, 2005
    Inventors: Jeffery Hess, Matthew Gelhaus, Rob Chohan
  • Publication number: 20050029548
    Abstract: A charge control circuit for controlling a micro-electromechanical system (MEMS) device having variable capacitor formed by first conductive plate and a second conductive plate separated by a variable gap distance. The charge control circuit comprises a switch circuit configured to receive a reference voltage having a selected voltage level and configured to respond to an enable signal having a duration at least as long as an electrical time constant constant of the MEMS device, but shorter than a mechanical time constant of the MEMS device, to apply the selected voltage level across the first and second plates for the duration to thereby cause a stored charge having a desired magnitude to accumulate on the variable capacitor, wherein the variable gap distance is a function of the magnitude of the stored charge.
    Type: Application
    Filed: September 15, 2004
    Publication date: February 10, 2005
    Inventors: Eric Martin, Mark Hunter, Arthur Piehl, James Przybyla, Matthew Gelhaus, Leslie Szepesi
  • Publication number: 20050001828
    Abstract: A charge control circuit for controlling a micro-electromechanical system (MEMS) device having variable capacitor formed by first conductive plate and a second conductive plate separated by a variable gap distance. The charge control circuit comprises a switch circuit configured to receive a reference voltage having a selected voltage level and configured to respond to an enable signal having a duration at least as long as an electrical time constant constant of the MEMS device, but shorter than a mechanical time constant of the MEMS device, to apply the selected voltage level across the first and second plates for the duration to thereby cause a stored charge having a desired magnitude to accumulate on the variable capacitor, wherein the variable gap distance is a function of the magnitude of the stored charge.
    Type: Application
    Filed: July 28, 2004
    Publication date: January 6, 2005
    Inventors: Eric Martin, Mark Hunter, Arthur Piehl, James Przybyla, Matthew Gelhaus, Leslie Szepesi
  • Patent number: 6829132
    Abstract: A charge control circuit for controlling a micro-electromechanical system (MEMS) device having variable capacitor formed by first conductive plate and a second conductive plate separated by a variable gap distance. The charge control circuit comprises a switch circuit configured to receive a reference voltage having a selected voltage level and configured to respond to an enable signal having a duration at least as long as an electrical time constant constant of the MEMS device, but shorter than a mechanical time constant of the MEMS device, to apply the selected voltage level across the first and second plates for the duration to thereby cause a stored charge having a desired magnitude to accumulate on the variable capacitor, wherein the variable gap distance is a function of the magnitude of the stored charge.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: December 7, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Eric T. Martin, Mark Hunter, Arthur Piehl, James R. Przybyla, Matthew Gelhaus, Leslie Louis Szepesi, Jr.
  • Publication number: 20040218341
    Abstract: A charge control circuit for controlling a micro-electromechanical system (MEMS) device having variable capacitor formed by first conductive plate and a second conductive plate separated by a variable gap distance. The charge control circuit comprises a switch circuit configured to receive a reference voltage having a selected voltage level and configured to respond to an enable signal having a duration at least as long as an electrical time constant constant of the MEMS device, but shorter than a mechanical time constant of the MEMS device, to apply the selected voltage level across the first and second plates for the duration to thereby cause a stored charge having a desired magnitude to accumulate on the variable capacitor, wherein the variable gap distance is a function of the magnitude of the stored charge.
    Type: Application
    Filed: April 30, 2003
    Publication date: November 4, 2004
    Inventors: Eric T. Martin, Mark Hunter, Arthur Piehl, James R. Przybyla, Matthew Gelhaus, Leslie Louis Szepesi