The AIT format was developed by Sony based on helican-scan technology. It was the first to use built-in flash memory on a MIC (Memory-In-Cassette) cassette, which contains service information about the tape content and a data distribution map, which allows to optimize access to them. Like other modern formats, AIT uses a tracking system (ATF) to record tracks more densely. The AIT format was developed by Sony based on helican-scan technology. It was the first to use built-in flash memory on a ...