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:
Jan. 24, 1984
Filed:
May. 18, 1981
Lyle R Strathman, Cedar Rapids, IA (US);
Rockwell International Corporation, El Segundo, CA (US);
Abstract
Attainment of exacting dynamic convergence or beam registration is realized in a multi-gun, multi-colored cathode ray tube display system which maintains beam superposition across the display area of the cathode ray tube regardless of scanning direction or scanning rate. The system is particularly effective in maintaining exacting convergence in random scanned displays wherein scanning direction and scanning rates vary considerably. Inherent lag differences in convergence force fields as compared to deflection force fields is compensated and corrected by the summation of each of the horizontal and vertical scan signals with a signal representing the sign and magnitude of the rate of change thereof and with this summation being applied to convergence signal development circuitry rather than the scan signal per se being applied as in conventional known convergence systems.