Multipurpose Frame Grabbing Interactive Experiments (1972)

By K. W. Chamberlain, V. P. of Reston Transmission Company

Our management was approached by the Mitre Corporation in January 1971 to participate in a cooperative experiment in interactive television by providing the use of one of our available channels. Incidentally, they are a nonprofit research and systems engineering firm whose work is sponsored by various governmental agencies and foundations.

The plan was to microwave the output of two on-line computers located eight miles away in McLean, Virginia, to our head-end where the signal would be transmitted on channel 7 to all subscribers. (See figure 2) Since the subscriber already has a good display device in his TV set and the return path via his telephone, we only needed to add a control box and a frame grabber to complete the home terminal.

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