Patents by Inventor Harold Dalman

Harold Dalman 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).

  • Gantry position reference for tomographic scanners
    Patent number: 5175754
    Abstract: A CT apparatus produces a trigger position signal having a programmable angular spacing, for triggering the acquisition of projections, from an encoder index pulse having a different fixed angular spacing. An estimation circuit estimates the time of occurrence of a next pulse in the trigger position signal by evaluating the timing of the encoder index pulses. The estimation circuit may be a phase-locked-loop or a set of lookup tables keyed to gantry position and speed.
    Type: Grant
    Filed: May 11, 1992
    Date of Patent: December 29, 1992
    Assignee: General Electric Company
    Inventors: Colin J. Casey, Russell W. Hum, Phil E. Pearson, Judith A. Clifford, Harold Dalman