The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 29, 1992
Filed:
May. 11, 1992
Applicant:
Inventors:
Colin J Casey, West Lafayette, IN (US);
Russell W Hum, Waukesha, WI (US);
Phil E Pearson, Pewaukee, WI (US);
Judith A Clifford, Temple Terrace, FL (US);
Harold Dalman, Brookfield, WI (US);
Assignee:
General Electric Company, Milwaukee, WI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05G / ;
U.S. Cl.
CPC ...
378-4 ; 378 94 ; 378 15 ; 378101 ;
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.