Mastodawn

The Secure Digital (“SD card”) logo was contributed to the the SD-3C license clearinghouse by Toshiba, who had trademarked it as the logo for Super Density Disc optical disc for video content. But the DVD alliance beat the Toshiba technology, and Super Density was abandoned—except for the logo.

So if you wonder why the D in a logo for a solid state memory card looks like a laser disc, now you know why.

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emurphy42 Jul 9, 2023

@Cdespinosa Weird hearing about SD-3C in the wild, as opposed to just SD products. One of my side gigs at the day job was to build the interactive bits of their web site, mainly (a) licensees periodically report their lump sum sales/purchases and it calculates their royalty fees, and (b) SD-3C periodically reports about shutting down unlicensed operations.