Patents by Inventor Roderick OLDFIELD

Roderick OLDFIELD 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).

  • Display device and method
    Patent number: 12372922
    Abstract: A liquid crystal display device and corresponding method to display a hologram is described. A grey level value for each pixel of a hologram is received and a pixel voltage based on grey level for each pixel of the hologram is determined. The pixels of the display device are driven in accordance with a first representation of the pixel voltages during at least one first drive event. The pixels of the display device are driven in accordance a second representation of the pixel voltages during at least one second drive event after the at least one first drive event. The first representation may be an n-bit representation and the second representation may be a m-bit representation and n<m. The at least one first drive event may be shorter in duration than the at least one second drive event.
    Type: Grant
    Filed: March 8, 2022
    Date of Patent: July 29, 2025
    Assignee: Envisics Ltd
    Inventors: Jamieson Christmas, Mark Newsam, Ian Bledowski, Roderick Oldfield
  • DISPLAY DEVICE AND METHOD
    Publication number: 20240077833
    Abstract: A liquid crystal display device and corresponding method to display a hologram is described. A grey level value for each pixel of a hologram is received and a pixel voltage based on grey level for each pixel of the hologram is determined. The pixels of the display device are driven in accordance with a first representation of the pixel voltages during at least one first drive event. The pixels of the display device are driven in accordance a second representation of the pixel voltages during at least one second drive event after the at least one first drive event. The first representation may be an n-bit representation and the second representation may be a m-bit representation and n<m. The at least one first drive event may be shorter in duration than the at least one second drive event.
    Type: Application
    Filed: March 8, 2022
    Publication date: March 7, 2024
    Inventors: Jamieson CHRISTMAS, Mark NEWSAM, Ian BLEDOWSKI, Roderick OLDFIELD