Patents Assigned to David Hall
  • System for monitoring movement of a vehicle tool
    Patent number: 5996702
    Abstract: A method for monitoring a vehicle tool including inputting tool data indicative of the location of the vehicle tool to a data processor, inputting data to the data processor on a topography model in which the vehicle tool is to operate, operating the data processing to compare the vehicle tool location with the model, outputting from the data processor to a visual display, data indicative of the difference in location between the vehicle tool and an adjacent surface of the model, displaying on the visual display an image of the topography model, a representation of the location of the vehicle tool and a representation of the distance of the vehicle tool to the adjacent surface of the model.
    Type: Grant
    Filed: December 29, 1997
    Date of Patent: December 7, 1999
    Assignee: David Hall
    Inventor: David John Hall
  • Providing selective data broadcast receiver addressability
    Patent number: 5953418
    Abstract: A method of transmitting data to a plurality of receivers is provided wherein an identifier is assigned to each of the receivers that cannot be ascertained once assigned, a subset of receivers is selected to receive data, and an encrypted board identifier corresponding to each receiver of the subset is transmitted, wherein a receiver of the subset becomes enabled upon receipt of the encrypted board identifier and data is transmitted with an indication that the data is only for receivers that have been enabled.
    Type: Grant
    Filed: June 14, 1996
    Date of Patent: September 14, 1999
    Assignees: David Hall, Patricia Gallup
    Inventors: James M. Bock, Marian Tapu
  • Method of dyeing textiles
    Patent number: 5861045
    Abstract: There is provided a method of dyeing cellulosic and/or wool fibers and fabrics in a dyebath containing a dilute solution of tannic acid and/or tannic acid containing products at a proper pH. An exhaust salt is added to the bath to exhaust the tannic acid and then the tannic acid is fixed with an iron salt.
    Type: Grant
    Filed: April 2, 1997
    Date of Patent: January 19, 1999
    Assignees: John Lezdey, David Hall
    Inventor: David Hall
  • Using adaptive redundant packet retrieval to improve reliability in a unidirectional data broadcasting system
    Patent number: 5802311
    Abstract: Transmitting data includes grouping the data into one or more packets, constructing a segment of data packets, and transmitting the segment more than once. Control information indicating that the segment is about to commence may be transmitted prior to transmission of the segment. Similarly, control information indicating that the segment has ended may be transmitted after transmission of the segment. The transmission may be performed by superimposing the segment and control information onto a video signal.
    Type: Grant
    Filed: June 14, 1996
    Date of Patent: September 1, 1998
    Assignees: David Hall, Patricia Gallup
    Inventor: Daniel M. Wronski