Digital readouts superimposed electronically on televised pictures

A display module is described that allows numeric data to be superimposed on televised pictures and recorded as an adjunct to the televised information. The device is inexpensive, versatile, and electrically compatible with most closed circuit television systems. It employs standard, large-scale integrated (LSI) circuits, commonly used in commercial television receivers to display time and channel number. Additional circuits are presented that connect these LSI circuits to those of a conventional television camera and videotape recorder, allow variables other than time and channel number to be displayed, reduce the size of the readouts, and produce more than one set of time and channel number readouts.