A device for the automatic treatment of recording signals of a oszillografenbildschirms

摘要

In a digital storage system for oscilloscope trace data, in order to obtain precisely the ordinate of an oscilloscope trace at the intersection of a scanning line therewith in a television camera image of the trace, a scan/trace intersection profile signal is compared with a multiplicity of threshold values to generate a set of rectangular pulses of a duration equal to the threshold-override interval, and the pulse for the highest threshold is selected and processed to determine the true intersection ordinate by forming the half-sum of the ordinates of the leading and trailing edges of the pulse. This ordinate and the line scan number are provided as a pair of digital quantities (addresses) for storage in a digital memory.