Measuring device and method for automatic adjustment of contrast in the screen display
AssigneeRohde & Schwarz GmbH & Co. KG
InventorsMatthias Keller, Hagen Eckert
Life of this patent
Estimating the term…
Abstract
A measuring device is used to increase a contrast of a plurality of measured values displayed in a spectrogram or spectral histogram and contains a data-acquisition unit, a computer unit and a statistic unit. The data-acquisition unit is embodied to detect a plurality of measured values to be displayed. The statistic unit is embodied to calculate a distribution which contains the frequency of occurrence for every level value of the measured values to be displayed. The computer unit is embodied to specify a dynamic range, over which the contrast extends. In this context, a specified proportion of the level values which image the noise are not used for the specification of the dynamic range.
Claims17
A measuring device for increasing a contrast of a plurality of measured values displayed in a spectrogram or a spectral histogram, comprising:
- a data-acquisition unit;
- a computer unit;
- and
- a statistic unit,
- wherein the data-acquisition unit is configured to register a plurality of measured values to be displayed,
- wherein the statistic unit is configured to calculate a distribution which contains a frequency of occurrence for every level value of the measured values to be displayed,
- wherein the computer unit is configured to specify a dynamic range over which the contrast extends,
- wherein, in specifying the dynamic range, the computer unit is configured to consider level values of which the frequency of occurrence is disposed above an adjustable threshold value,
- wherein a proportion of the level values, which images the noise, is not used for specification of the dynamic range, and
- wherein the computer unit is further configured to modify the display of the level values, which specify the dynamic range, from a linear to a parabolic or an exponential characteristic to allow signal components which exceed a given level value to be emphasized.
A method for increasing a contrast of a plurality of measured values displayed in a spectrogram or spectral histogram including a measuring device, comprising:
- registering the plurality of measured values to be displayed using a data-acquisition unit;
- calculating a distribution, which contains a frequency of occurrence for every level value of the measured values to be displayed using a statistic unit;
- and
- specifying automatically with a computer unit, a dynamic range over which the contrast extends,
- wherein, in the automatic specification of the dynamic range, level values of which the frequency of occurrence disposed above an adjustable threshold value are considered,
- wherein a specified proportion of those level values, which images the noise, is not used for the specification of the dynamic range, and
- modifying the display of the level values, which specify the dynamic range, from a linear to a parabolic or an exponential characteristic to allow signal components which exceed a given level value to be emphasized.
Dependencies are inferred from the claim text.