Audiovisual Dictionary Get to know the terms of the audiovisual ecosystem TODAS0-9ABCDEFGHIJKLMNOPQRSTUVWXYZ D3 Composite Digital video format, developed in 1989 by NHK and Matsushita (Panasonic) on 1/2 ”cassette tape, originally called Dx.Recognized by the SMPTE as D-3. Our Services Audiovisual ConsultingOTT PlatformsMedical CareSupport and maintenance BACK TO INDEX Dx Composite Digital Cassette OTT D3 Dx ← D2 D5 →