Patents by Inventor Brian Box English

Brian Box English 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).

  • Beamed-intensity control systems for cathode-ray tubes
    Patent number: 3965389
    Abstract: A logical circuit for maintaining uniform the density of the trace made on a photographic negative by the beam of a CR tube where the beam is subject to displacements in X and Y coordinate directions. The circuit includes a first bistable stage which represents by its state which (X or Y) displacement occurred last, and so controls (by way of a gating network and a second bistable stage) the beam intensity as to briefly reduce it whenever X and Y displacements occur alternately.
    Type: Grant
    Filed: August 29, 1973
    Date of Patent: June 22, 1976
    Assignee: Ferranti, Limited
    Inventors: Brian Box English, Frederick Cross