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:
Feb. 27, 1979
Filed:
Jun. 27, 1977
Glenn C Waehner, Riverside, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
A high speed driver circuit for the magnetic deflection yoke of an orthogonal channel displaying high speed alphanumeric characters, or the like, includes a first input receiving a stored signal proportional to the derivative of the vector slope component and a second input receiving a positive feedback from the yoke sense resistor. At high frequencies the yoke current is primarily inductive so that the voltage across the yoke is proportional to the rate of change of current through the yoke, hence, this voltage, when properly connected by positive feedback, is also proportional to the derivative of the voltage across the magnetic deflection yoke. By combining this voltage waveform directly within the vector slope signal, the need for an active integrator in the closed loop driving the magnetic deflection yoke is eliminated.