Back to results
US 4,536,707 AGranted
Method and apparatus for displaying one or more measurement values of arbitrary measurement variables on a screen
OwnerArnulf Herweginventor
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
OwnerArnulf Herweginventor
Estimating the term…
The invention offers the opportunity of reproducing measurement values of arbitrary measurement variables, in color as well, on a screen and of storing them as needed. According to the invention, a measurement voltage (Ux) corresponding to a measurement variable is supplied to an adding amplifier (12), which is simultaneously supplied with a voltage (Us) of sawtooth-like course, which is synchronized by the frame-frequency pulses or line-frequency pulses (fsynV or fsynH), as a result of which if a threshold value is exceeded, a signal (tx) which is time-proportional to the measurement voltage (Ux) is emitted for further processing to a video signal. The reproduction of the measurement value (or values) on the video display terminal can take place in the form of a horizontal or vertical bar, and threshold value markers, scaling lines, character symbols and so forth can be reproduced as well.
A method for displaying one or more measurement values of arbitrary measurement variables on the screen of a video display terminal (VDT) operating by the line-scanning process, in particular a color VDT, in which line-frequency pulses and frame-frequency pulses are generated in a synchronizing pulse generator, the method comprising:
An apparatus for displaying one or more measurement values of arbitrary measurement variables on the screen of a video display terminal (VDT) operating on the line-scanning principle, in particular a color VDT, in which line-frequency and frame-frequency pulses are generated in a synchronizing pulse generator, having a power supply unit and a synchronizing pulse generator, comprising a base unit containing the synchronizing pulse generator, a video level adaptor circuit and a synchronizing mixing circuit, and further comprising at least one measurement channel unit, including a measurement voltage amplifier for standardizing a measurement voltage (Ux), an adding amplifier to which is supplied the measurement voltage (Ux) and a sawtooth voltage (Us) generated by a time-base generator, a threshold switch to which the summed voltage of the adding amplifier is supplied, and a gate circuit synchronized with the line frequency or frame-frequency pulse (fsynH, fsynV), an output signal (tx) of the threshold switch and the gate circuit furnishing a measurement value signal (tx) proportional to the measurement value to the video signal output circuit, on the basis of which measurement value signal (tx) a video signal is formed in the synchronizing pulse mixing circuit.
Dependencies are inferred from the claim text.