Probability density histogram display
AssigneeHewlett-Packard Company
InventorDana L. Johnson
Life of this patent
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Abstract
Disclosed is a probability density histogram display for a digital oscilloscope which shows a probability density histogram display of an input signal waveform alongside the conventional voltage-versus-time time-domain display of the waveform. The histogram shows the relative frequency of occurrence of voltage amplitude levels of the waveform. The histogram is optional and shown simultaneously with the time-domain display of the waveform.
Claims1
A digital oscilloscope for acquiring and displaying information about an electronic input signal to said oscilloscope, said information to be presented in both the time-domain and the probability-domain simultaneously on a display-screen of said oscilloscope, said oscilloscope comprising:
- a first means for displaying, in said time-domain, said input signal as a voltage-versus-time waveform within a distinctly demarcated first portion of said display-screen of said oscilloscope;
- and
- a second means for displaying, in said probability-domain, within a distinctly demarcated second portion of said display-screen, a probability-density histogram, said histogram showing the relative frequency of occurrence of the voltage amplitude levels of said voltage-versus-time waveform, said histogram viewable simultaneously with said voltage-versus-time waveform;
- said oscilloscope being configured such that a user of said oscilloscope can adjust acquisition of said input signal in response to information obtained from visually comparing the probability-domain display with the time-domain display of said input signal.
Dependencies are inferred from the claim text.