Patents by Inventor William J. Allen

William J. Allen 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: 7255448
    Abstract: A display system includes a light source, a spatial light homogenizer, and imaging optics. The spatial light modulator has a plurality of modulator pixels. The display system also includes a pixelated plate illuminated by the light source. The pixelated plate has a plurality of individually defined pixels formed thereon. The spatial light modulator is in optical communication with the pixelated color management device by the imaging optics and each of the modulator pixels is associated with at least one of the individually defined pixels of the pixelated plate.
    Type: Grant
    Filed: October 20, 2004
    Date of Patent: August 14, 2007
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Michael Greer, David C. Collins, William J. Allen, Timothy F Myers
  • Patent number: 7248406
    Abstract: A projection screen has first transparent particles tinted a first color and second transparent particles tinted a second color.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: July 24, 2007
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Gregory J. May, William J. Allen
  • Patent number: 7230657
    Abstract: Tools for directing a collection of light emitting devices toward pixel locations to make an image are disclosed. A pixel location is a light emitting device target at least twice during a given frame, and each light emitting device in the collection is directed toward at least two different pixel locations during the frame. Adjacent light emitting devices may be directed toward adjacent pixel locations or toward nonadjacent pixel locations.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: June 12, 2007
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Winthrop D. Childers, William J. Allen, Thomas B. Pritchard
  • Patent number: 7213926
    Abstract: In an embodiment, an apparatus includes a projection subsystem to project an image-containing beam, and an image adjustment element. The image adjustment element is to cause adjustment of the image-containing beam in response to a detection of relative movement of the apparatus with respect to a reference object. A method includes determining whether substantial relative movement of a projection system has been detected, in an embodiment. When substantial relative movement has been detected, the method further includes producing control inputs, and altering operation of one or more image adjustment elements and/or altering image data in response to the control inputs, in an embodiment.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: May 8, 2007
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Gregory J. May, William J. Allen
  • Patent number: 7158263
    Abstract: There is disclosed a method of dynamic generation of a linearized halftone matrix from a high bit resolution halftone matrix, for use in a printer device, for example a domestic or office printer device or a commercial high resolution printer device. A high bit resolution halftone threshold matrix is converted into a vector format (700). A tone correction function is applied by selecting a variable number of index values, each index value representing a threshold level. A tone corrected two-dimensional 8 bit threshold level matrix, is then applied to a corresponding print image plane comprising a plurality of pixels to obtain a two dimensional print data for each of a plurality of colors of an image. The print data is printed as a plurality of dots by a print head to form a printed image using a halftoning method.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: January 2, 2007
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: William J Allen, Johan Lammens
  • Patent number: 7112207
    Abstract: The present invention is directed to an apparatus and method for the stabilization and fastening of two pieces of tissue. A single device may be used to both stabilize and fasten the two pieces of tissue, or a separate stabilizing device may be used in conjunction with a fastening device. The stabilizing device may comprise a probe with vacuum ports and/or mechanical clamps disposed at the distal end to approximate the two pieces of tissue. After the pieces of tissue are stabilized, they are fastened together using sutures or clips. One exemplary embodiment of a suture-based fastener comprises a toggle and suture arrangement deployed by a needle, wherein the needle enters the front side of the tissue and exits the blind side. In a second exemplary embodiment, the suture-based fastener comprises a needle connected to a suture. The needle enters the blind side of the tissue and exits the front side. The suture is then tied in a knot to secure the pieces of tissue.
    Type: Grant
    Filed: April 24, 2003
    Date of Patent: September 26, 2006
    Assignee: Edwards Lifesciences Corporation
    Inventors: William J. Allen, Alan B. Bachman, Scott Reed, Leland R. Adams, Robert R. Steckel
  • Patent number: 7109981
    Abstract: A method of displaying an image with a display device includes receiving image data for the image. A first sub-frame and a second sub-frame corresponding to the image data are generated. The first and the second sub-frames are generated based on minimization of an error between the image data and a simulated image. The method includes alternating between displaying the first sub-frame in a first position and displaying the second sub-frame in a second position spatially offset from the first position.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: September 19, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Niranjan Damera-Venkata, William J. Allen, Daniel R. Tretter, Richard E. Aufranc, Jr.
  • Patent number: 7072108
    Abstract: A projection screen is provided that includes a display surface having a plurality of elements. Each element has an optical property that is responsive to an appropriate applied voltage. The display surface may be configured so that the optical properties of each element may be coordinated with the projected image.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: July 4, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Antonio S. Cruz-Uribe, William J. Allen, John Christopher Rudin, Andrew Arthur Hunter, Andrew L. Van Brocklin
  • Patent number: 7050120
    Abstract: The present invention relates to a display device that includes an illumination source configured to direct light along an optical path, a first color filter having a first number of color regions, and a second color filter having a second number of color regions, the first and second color filters being configured so as to cooperate in sequentially filtering the directed light to display an image.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: May 23, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: William J. Allen, Winthrop D. Childers, Clement C. Lo
  • Patent number: 7036939
    Abstract: A method and apparatus to control a digital projector. After receiving a turn-on request, the temperature associated with the light source is sensed and compared to a predetermined threshold. If the temperature is below the threshold, then the digital projector's light source is turned on. Otherwise, if the temperature is not below the threshold, the digital projector's cooling device is turned on and the turning on of the light source is delayed until the temperature falls below the threshold. After receiving a turn-off request, the cooling device is turned off coincident with the light source and without regard to the light-source temperature.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: May 2, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: James R Cole, William J. Allen
  • Patent number: 7030894
    Abstract: A method of displaying an image includes receiving image data for the image, buffering the image data for the image, including creating a frame of the image, defining a first sub-frame and at least a second sub-frame for the frame of the image from the image data, the second sub-frame being spatially offset from the first sub-frame, and alternating between displaying the first sub-frame in a first position and displaying the second sub-frame in a second position spatially offset from the first position.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: April 18, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: William J. Allen, Mark E. Gorzynski, P Guy Howard, Paul J. McClellan
  • Patent number: 7019736
    Abstract: The present invention relates to a display system that includes plural light sources, and a controller coupled with the light sources and configured to modify sequencing of the light sources to display an image based on display conditions.
    Type: Grant
    Filed: March 20, 2002
    Date of Patent: March 28, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: William J. Allen, Mark E. Gorzynski
  • Patent number: 7002565
    Abstract: Signaling a display device to automatically characterize a video signal is disclosed. In a method of an embodiment of the invention, a display device that has a video signal characterization circuit is signaled to automatically characterize a video signal of a video source. A predetermined characterization image is provided on the video signal of the video source for the display device to automatically characterize.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: February 21, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: William J. Allen, James R Cole, Brian S Dixon
  • Patent number: 6985254
    Abstract: A method for predicting the settled appearance of a test patch printed by an imaging system by applying a transfer function to the color of a freshly printed test patch. The transfer function may be formulated to take into account a variety of environmental conditions, such as humidity or temperature, or post-printing processes, such as lamination. The predicted settled test patch color may be exported to an external image processor, or the imaging system processor may internally compare the predicted settled test patch color with the desired test patch color in order to calibrate the color map used by the imaging system.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: January 10, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: William J Allen, Paul A Richards, George C Ross
  • Patent number: 6963319
    Abstract: A method of displaying an image includes receiving image data for the image; buffering the image data for the image, including creating a frame of the image; defining a first sub-frame and at least a second sub-frame for the frame of the image; and displaying the first sub-frame and the second sub-frame, including synchronizing shifting a displayed image of the second sub-frame with displaying the second sub-frame.
    Type: Grant
    Filed: September 11, 2002
    Date of Patent: November 8, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Michael A. Pate, William J. Allen, Michael Douglas Long, P. Guy Howard, John Matthew Koegler, III
  • Patent number: 6927890
    Abstract: A system for displaying an image includes a first light modulator including a first pixel array oriented at a first angle, and at least a second light modulator including a second pixel array oriented at a second angle different from the first angle. The first pixel array is adapted to produce a first image portion oriented at the first angle, and the second pixel array is adapted to produce a second image portion oriented at the second angle. As such, the first image portion and the second image portion are combined to display the image.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: August 9, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: William J. Allen
  • Patent number: 6916079
    Abstract: An image forming apparatus has a movable print device. A sensed device with indicia capable of being sensed is positioned adjacent to the movable print device. At least first and second indicia sensors are carried by the movable print device in spaced relation to one another.
    Type: Grant
    Filed: September 3, 2003
    Date of Patent: July 12, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: William J Allen, George C Ross
  • Patent number: 6910753
    Abstract: An image forming apparatus includes at least one cooperative element sensor. A carriage for use in the image forming apparatus has a main body including at least one printer element and at least first and second cooperative elements carried by the main body in spaced relation to one another.
    Type: Grant
    Filed: May 21, 2003
    Date of Patent: June 28, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: William J Allen, George C Ross
  • Patent number: 6908171
    Abstract: Overall print quality is improved via a method whereby an actual image is printed, a virtual image is defined based on image data, and the actual and virtual images are compared to identify a printhead error pattern which may be used to correct subsequent printing errors. This typically is accomplished via a system which employs an optical device which views an actual image to produce optical data, and a controller which derives a virtual image from image data provided to the printhead. The controller then compares the actual and virtual images to identify an error pattern, and modifies subsequent image data to compensate for perceived errors.
    Type: Grant
    Filed: January 22, 2003
    Date of Patent: June 21, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jefferson P. Ward, Steven B. Elgee, William J. Allen
  • Patent number: 6905217
    Abstract: A projector that has a narrow-spectrum light source to complement a broad-spectrum light source is disclosed. The broad-spectrum light source has a broad spectrum. The narrow-spectrum light source has a narrow spectrum complementing the broad spectrum of the broad-spectrum light source.
    Type: Grant
    Filed: February 21, 2004
    Date of Patent: June 14, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Winthrop D. Childers, Mark A. Van Veen, Mohammad M. Samii, William J. Allen, Jack H. Schmidt, Steven W. Steinfield, Wayne M. Richard, James R. Cole, James P. Dickie