Patents by Inventor Douglas Payne

Douglas Payne 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).

  • Publication number: 20120240224
    Abstract: Security systems and methods distinguish user-intended input hardware events from malicious input hardware events, thereby blocking resulting malicious output hardware events, such as, for example, outgoing network traffic. An exemplary security system can comprise an event-tracking unit, an authorization unit, and an enforcement unit. The event-tracking unit can capture a user-initiated hardware event. The authorization unit can analyze a user interface to determine whether the input hardware event should initiate outgoing hardware events and, if so, to create an authorization specific to the outgoing event initiated by the input event. This authorization can be stored in an authorization database. The enforcement unit can monitor outgoing hardware events and block the outgoing events for which no authorization matching the outgoing events are found in the authorization database.
    Type: Application
    Filed: September 14, 2011
    Publication date: September 20, 2012
    Applicant: Georgia Tech Research Corporation
    Inventors: Bryan Douglas Payne, Brendan Dolan-Gavitt, Wenke Lee
  • Patent number: 7602539
    Abstract: A holographic display includes a spatial light modulator (SLM), a light source arranged to illuminate the SLM, and replay optics arranged to focus light reflected from the SLM to present a three dimensional image. The light source appears substantially at a zeroth order point of the replay optics, such that light from the light source is directed through the replay optics before illuminating the SLM.
    Type: Grant
    Filed: November 20, 2007
    Date of Patent: October 13, 2009
    Inventor: Douglas Payne
  • Publication number: 20080186546
    Abstract: A holographic display comprises a spatial light modulator (SLM), a light source arranged to illuminate the SLM, and replay optics arranged to focus light reflected from the SLM to present a three dimensional image. The light source appears substantially at a zeroth order point of the replay optics, such that light from the light source is directed through the replay optics before illuminating the SLM.
    Type: Application
    Filed: November 20, 2007
    Publication date: August 7, 2008
    Applicant: F. Poszat HU, LLC
    Inventor: Douglas PAYNE
  • Patent number: 7379219
    Abstract: A holographic display comprising a spatial light modulator, SLM, for displaying a computer generated hologram, CGH, containing horizontal or vertical parallax only, HPO, means for illuminating the SLM, and means for guiding light reflected from the SLM to a display region, the means for illuminating the SLM comprising a vertically/horizontally oriented line light source.
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: May 27, 2008
    Assignee: F. Poszat Hu, LLC
    Inventor: Douglas Payne
  • Patent number: 7317564
    Abstract: A holographic display comprises a spatial light modulator, SLM, arranged to display a set of tiled holographic images, and illuminating means for illuminating a surface of the SLM. Replay means are provided for focusing light reflected from the SLM surface to present a three dimensional image. The illuminating means comprises a light source appearing substantially at a DC spot position of the replay means.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: January 8, 2008
    Assignee: F. Poszat HU, LLC
    Inventor: Douglas Payne
  • Publication number: 20070053034
    Abstract: A holographic display comprises a spatial light modulator, SLM, arranged to display a set of tiled holographic images, and illuminating means for illuminating a surface of the SLM. Replay means are provided for focusing light reflected from the SLM surface to present a three dimensional image. The illuminating means comprises a light source appearing substantially at a DC spot position of the replay means.
    Type: Application
    Filed: July 28, 2006
    Publication date: March 8, 2007
    Applicant: QinetiQ Limited
    Inventor: Douglas Payne
  • Patent number: 7053925
    Abstract: A reconfigurable, three-dimensional display (1) wherein knowledge of the viewer's (4) eyes is used to enable the effective exit pupil(s) of the display system to be optimised. The system utilises this knowledge to identify contributing regions (5) within the display (1) that contribute light to the viewer (4). Priority is given to calculating and displaying the part of the display corresponding to the contributing region (5), thereby allowing the system computation requirements to be minimised. Further computation savings are achievable by recognising that only light travelling in a limited range of angles need to be considered.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: May 30, 2006
    Assignee: QinetiQ Limited
    Inventors: Douglas A Payne, Paul M Blanchard
  • Patent number: 7009741
    Abstract: A method of computing a computer generated hologram (CGH) for use in displaying a holographic image of a replay object. The method of generating a first computer generated hologram corresponding to the desired replay object (step 1); subdividing the first computer generated hologram into a plurality of blocks, each representing a sub CGH (step 2); for each block or sub CGH, calculating the corresponding replay sub-image hereafter called target wavefront data set (step 3); and generating for each target wavefront data set a second constrained modulation computer generated hologram wherein that second CGH is modulated within constrained values (step 5); and combining the plurality of second constrained modulation computer generated holograms to provide a third complete constrained modulation computer generated hologram (step 6).
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: March 7, 2006
    Assignee: Qinetiq Limited
    Inventor: Douglas Payne
  • Publication number: 20040263930
    Abstract: A holographic display comprising a spatial light modulator, SLM, for displaying a computer generated hologram, CGH, containing horizontal or vertical parallax only, HPO, means for illuminating the SLM, and means for guiding light reflected from the SLM to a display region, the means for illuminating the SLM comprising a vertically/horizontally oriented line light source.
    Type: Application
    Filed: March 16, 2004
    Publication date: December 30, 2004
    Inventor: Douglas Payne
  • Publication number: 20040246547
    Abstract: A holographic display comprises a spatial light modulator, SLM, arranged to display a set of tiled holographic images, and illuminating means for illuminating a surface of the SLM. Replay means are provided for focusing light reflected from the SLM surface to present a three dimensional image. The illuminating means comprises a light source appearing substantially at a DC spot position of the replay means.
    Type: Application
    Filed: March 1, 2004
    Publication date: December 9, 2004
    Inventor: Douglas Payne
  • Publication number: 20040233487
    Abstract: A method of computing a computer generated hologram (CGH) for use in displaying a holographic image of a replay object. The method comprising the steps of generating a first computer generated hologram corresponding to the desired replay object (step 1); subdividing the first computer generated hologram into a plurality of blocks, each representing a sub CGH (step 2); for each block or sub CGH, calculating the corresponding replay sub-image hereafter called target wavefront data set (step 3); and generating for each target wavefront data set a second constrained modulation computer generated hologram wherein that second CGH is modulated within constrained values (step 5); and combining the plurality of second constrained modulation computer generated holograms to provide a third complete constrained modulation computer generated hologram (step 6).
    Type: Application
    Filed: March 3, 2004
    Publication date: November 25, 2004
    Inventor: Douglas Payne
  • Patent number: 6760135
    Abstract: A holographic display comprises a source of coherent light and an Electrically Addressable Spatial Light Modulator (EASLM) in the path of the light source. The EASLM is arranged in use to be driven successively by a set of sub-holograms which together correspond to a holographic image. Light guiding means is arranged to guide light output from the EASLM such that the sub-holograms are displayed successively in respective tiled regions of an EASLM projection surface.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: July 6, 2004
    Assignee: Holographic Imaging LLC
    Inventors: Douglas Payne, Christophe W. Slinger
  • Patent number: 6753990
    Abstract: A holographic display comprises a light source and an Electrically Addressable Spatial Light Modulator (EASLM) 1 in the path of the light source. A light guide is arranged to guide light from the EASLM to each of a set of tiled regions of a OASLM in turn. The Optically Addressable Spatial Light Modulator (OASLM) 8 has a monostable light modulation property which is changed from a first state to a second state by incident light.
    Type: Grant
    Filed: March 1, 2002
    Date of Patent: June 22, 2004
    Assignee: Holographic Imaging LLC
    Inventors: Douglas Payne, Christopher W. Slinger
  • Publication number: 20040021768
    Abstract: A reconfigurable, three-dimensional display (1) wherein knowledge of the viewer's (4) eyes is used to enable the effective exit pupil(s) of the display system to be optimised. The system utilises this knowledge to identify contributing regions (5) within the display (1) that contribute light to the viewer (4). Priority is given to calculating and displaying the part of the display corresponding to the contributing region (5), thereby allowing the system computation requirements to be minimised. Further computation savings are achievable by recognising that only light travelling in a limited range of angles need to be considered.
    Type: Application
    Filed: December 20, 2002
    Publication date: February 5, 2004
    Inventors: Douglas A Payne, Paul M Blanchard
  • Patent number: 5819425
    Abstract: A clamp for temporarily attaching a level to a construction component including an elongated metal or plastic, inverted U-shaped, two-piece body with an opening in the center of the top wall that extends partway down the side walls through which the level bubble is seen, a pair of pivotally-mounted, spring-loaded, opposed jaws for temporarily gripping the construction component, and grooves, a microcatch patches, or screws for temporarily attaching the level to the body. The two-piece body allows for adjustment to levels of different widths.
    Type: Grant
    Filed: October 4, 1996
    Date of Patent: October 13, 1998
    Inventor: Douglas Payne
  • Patent number: 5799404
    Abstract: A clamp for temporarily attaching a level to a construction component including an elongated metal or plastic, inverted U-shaped, one-piece body with an opening in the center of the top wall that extends partway down the side walls through which the level bubble is seen, a pair of pivotally-mounted, spring-loaded, opposed jaws having pins for temporarily gripping the construction component, and microcatch patches or screws for temporarily attaching the level to the body.
    Type: Grant
    Filed: October 3, 1996
    Date of Patent: September 1, 1998
    Inventor: Douglas Payne
  • Patent number: 5581900
    Abstract: A clamp for temporarily attaching a level to a construction component. One embodiment includes an elongated metal or plastic, inverted U-shaped body with an opening in the center of the top wall that extends down the side walls through which the level bubble is seen, a pair of pivotally-mounted, spring-loaded, opposed jaws for temporarily gripping the construction component, and a microcatch patch or screws for temporarily attaching a level to the body. A second embodiment includes a pair of bent-wire clips, where each clip has a cross piece and a downwardly extending pair of legs that are curved inward so that the ends are closer together than the length of the cross piece and the level is temporarily attached to the clips by friction between the legs and the level, and a pair of opposed bent-wire, spring-loaded jaws attached to the end of the legs for temporarily gripping the construction component.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: December 10, 1996
    Inventor: Douglas Payne
  • Patent number: 5490334
    Abstract: A construction framing tool is provide by an elongated body member and a pair of cooperative members at its opposite ends for assembling studs, joists and rafters between headers and footers. The tool includes a holder or cradle as part of one cooperative member and a shoulder as part of the other cooperative member.
    Type: Grant
    Filed: December 6, 1994
    Date of Patent: February 13, 1996
    Assignee: Frame Master, Inc.
    Inventor: Douglas Payne