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:
Jun. 18, 1991
Filed:
Jul. 19, 1989
Dominique Gauthier, Ermont, FR;
Thomson-LGT Laboratoire General des Telecommunications, Conelans Sainte Honorine, FR;
Abstract
The disclosure concerns automatic measuring stands. The automatic measurement of the amplitude of an intermodulation line at the output of a TV transmitter is difficult to achieve because this line is often drowned in a cloud of noise formed by the spectra of lines due to the numerous frequencies of the line frequency. The standard way to make the measurement is to do a visual interpretation. When the measurement is done automatically, this visual interpretation is not possible. The method according to the invention uses the a priori knowledge of the existence of a steady level at the peak of the line to be measured. The method consists in: considering the samples of the spectrum signal given by the analyzer, for a period of time corresponding to the duration of the steady level; considering a sequence of sections in the scale of the amplitudes; counting the number of samples having a value belonging to a given section, successively for each of the sections; determining that section which corresponds to the greatest number of samples, the value corresponding to this section constituting the amplitude value of the steady level.