Symbol 5526-2 from IEC 60417 - Title/Meaning: Colour video input, digital Function/description: To identify controls and connecting terminals specifically meant for digital colour video input.
Additional information: 
Published in: Supplement O, 1996,3C/293/DIS
Own work using: iso.org/obp/graphics/grs/2cb54735-ebc2-4745-ba76-f2da046b02f1 200.png
Vectorization:  Mrmw