Data Display for Real Time Telemetry

A data display meeting objectives of rapid updating, concentrated viewing area, access to multiple formats, high reliability, and flexibility has been developed for use with the Real Time Telemetry Data System (RTTDS). This display superimposes alpha-numeric symbols projected from a matrix of electromechanical data projectors on background formats projected by a random access 35 mm slide projector. Control logic for this device is shown in block form and reliability and other specifications listed. Background formats for use in the RTTDS are described as is the interface logic consisting of manual and automatic inputs, a core memory, and buffer registers. Typical updating times of the system addressed from sequential memory locations vary from 10 to 15 seconds depending on the amount of data to be changed. An alternate logic scheme using scanning techniques reduces updating time to 4 to 6 seconds. Self-testing programs can be utilized and an example is given. An industrial application for the data display is described including a typical block diagram and background formats.