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:
May. 14, 1991
Filed:
Apr. 28, 1989
Uwe Hartmann, Untergriesbach, DE;
Fritz Ohnemus, Villingen-Schwenningen, DE;
Deutsche Thomson-Brandt GmbH, Villingen-Schwenningen, DE;
Abstract
A method for generating a voltage with a triangular waveform which is independent of frequency. Two oppositely-phased voltages with sawtooth waveforms are added together in an adding circuit. These two waveforms have different amplitudes, and one of the waveforms has a horizontal section during predetermined intervals of a period. The resulting triangular waveform has points at which the waveform passes through zero, and these points coincide with the points at which the sawtooth waveforms pass through zero also. These points at which the waveforms pass through zero corresponds to 0.degree., 180.degree., and 360.degree. of a waveform cycle for eliminating substantially gullwing errors in television sets. These points correspond to the beginning, center and end of lines in the television sets.