It's probably not common knowledge that Hitachi even made (and Renesas still makes, apparently [1]) graphics hardware. To the best of my knowledge, they designed the sprite/polygon rasterizer ("VDP1") for the Sega Saturn, and the off-the-shelf Hitachi/Renesas chips seem to be loosely related.

[1] http://am.renesas.com/products/mix_sig/graphic/index.jsp