About 40 years ago the company I was working for bought a big videotape recorder, and procured a custom controller for it to use it as a large random access sto

About 40 years ago the company I was working for bought a big videotape recorder, and procured a custom controller for it to use it as a large random access storage device. The controller used a large Reed-Solomon code to detect and correct fairly large multi-bit errors. It worked quite well, storing images for Boeing, Lockheed, and McDonnel-Douglas aircraft maintenance manuals.