US 4,050,057 AGranted

Data sample recording system

AssigneeRaytheon Company

InventorsWilliam R. Backman, Jr., Mark A. Chramiec

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Abstract

A data sample recording system having a memory for storing a predetermined number of data samples accumulated over various intervals of time. Each interval of time is divided into a predetermined number of subintervals, there being an electrical circuit for detecting the peak value of data occurring in each of the subintervals. The occurrences of the subintervals are synchronized with a periodic passing of a stylus across a recording medium in a recorder. The predetermined number of data samples is equal to the number of resolution elements of a line of data on the recording medium, stored data being fed out to the recorder in synchronism with the stylus movement to provide a display of data having a predetermined number of resolution elements of display independent of the length of the interval of time.

Claims7

Dependent claims

A recording system comprising:

a recorder for recording data of a signal, said recorder having a recording medium and means for printing marks thereupon, there being a predetermined number of resolution elements across said medium for the printing of said marks;
means synchronized to said printing means for initiating a data sampling interval and a data printing interval;
means coupled to said initiating means for repetitively sampling said signal during said data sampling interval to produce a series of samples, said sampling means including means for selecting one sample of said series of samples during each of a number of subintervals of said data sampling interval, said number of subintervals being equal to said predetermined number;
means for varying the duration of said data sampling interval while retaining said predetermined number of subintervals;
and
means synchronized to said printing means for feeding samples selected by said selecting means to said printing means during said data printing interval.

3 more elements

Dependencies are inferred from the claim text.