Patents by Inventor Peter Frank Bird

Peter Frank Bird 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: 4122438
    Abstract: A position encoding arrangement is provided having a position locating area from which the positioned co-ordinates of a probe in the area can be found. The invention provides for a change of magnification of the arrangement so that movement of the probe produces a scaled down change in positional co-ordinates. A preferred embodiment provides a light beam encoder for use in conjunction with a C.R.T. type display where a probe is detected and a marker appears on the screen. With the invention change in magnification allows scaled down movement of the marker to allow accurate positioning.
    Type: Grant
    Filed: January 19, 1977
    Date of Patent: October 24, 1978
    Assignee: The Marconi Company Limited
    Inventor: Peter Frank Bird