Name that Logo

Update: The logo belongs to Mitsumi

Can you name the logo in this picture? I can't seem to match it up with a manufacturer. It looks a lot like the Microchip Technology Inc. logo, but as far as I can tell they don't make tactile switches. I've seen this logo on a chip before. Unfortunately I can't remember what kind of IC it was. Please post ideas in the comments. Any help would be appreciated.