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. 16, 1978
Filed:
Mar. 04, 1977
Michael Altwein, Darmstadt, DT;
Firma Carl Schenck AG, Darmstadt, DT;
Abstract
A method for determining a vector component of an oscillation such as an oscillatory signal comprises applying the measured analog oscillatory signal to the calibration voltage input of a multiplying digital-to-analog (D/A) converter, and simultaneously applying a digital reference signal to the digital input of the digital-to-analog converter. The reference signal includes sine or cosine values of an oscillation suitable for the vector component determination and having a frequency corresponding to the frequency of the oscillatory signal to be determined. The analog output of the D/A converter is then further processed to ascertain the desired vector component. The circuit arrangement for practicing this method comprises a multiplying digital-to-analog converter and a binary counter which sequentially addresses a digital memory used to provide the digital reference signals. The binary counter is controlled by a reference signal generator.