Patents by Inventor Alan R. Preston

Alan R. Preston 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).

  • Holgraphic display with switchable aspect ratio
    Patent number: 6377369
    Abstract: A holographic display system comprising left and right optical systems is disclosed, The optical systems each comprise an image display operable to display an input image and first and second holographic devices. The first holographic device is operable to project the input image to overlap with the input image projected from the other of the left and right optical systems to form a resultant image with a first aspect ratio. The second holographic device is operable to project the input image to overlap with the input image projected from the other of the left and right optical systems to form a resultant image with a second aspect ratio, different from the first aspect ratio. A method of changing the aspect ratio of an image is also disclosed.
    Type: Grant
    Filed: June 6, 2000
    Date of Patent: April 23, 2002
    Assignee: Digi Lens, Inc.
    Inventor: Alan R. Preston
  • Holographic display with switchable aspect ratio
    Patent number: 6094283
    Abstract: A holographic display system comprising left and right optical systems is disclosed. The optical systems each comprise an image display operable to display an input image and first and second holographic devices. The first holographic device is operable to project the input image to overlap with the input image projected from the other of the left and right optical systems to form a resultant image with a first aspect ratio. The second holographic device is operable to project the input image to overlap with the input image projected from the other of the left and right optical systems to form a resultant image with a second aspect ratio, different from the first aspect ratio. A method of changing the aspect ratio of an image is also disclosed.
    Type: Grant
    Filed: September 23, 1999
    Date of Patent: July 25, 2000
    Assignee: DigiLens, Inc.
    Inventor: Alan R. Preston