Magnetic sound carrier recording and read-out system - has information in clear and control code recorded on same sound carrier track

摘要

The information is recorded on the same track of the carrier in clear text as a control code. This is done by interrupting recording of the information in clear for a period of 10 to 50 milliseconds and by recording coded control information during this period. During playback or read-out the coded control data is separated out, decoded, stored and displayed. Recording of the information in clear can also be interrupted for the control data at regular intervals of 1 to 5 seconds.