Mark,
respects, Canon _is_ one of those big diversified giants. I just did a quick check on gross revenues and on Hoovers.com and found Sony with 72 billion, Canon with 33 billion, while Nikon and Pentax came in at 4.7 and 1.2 billion respectively. (Couldn't find Panasonic.)
search for Matsushita Electric (Panasonic, Technics, National and Quasar IIRC are only trade marks, the company itself bears the name of its' founder Konosuke Matsushita).
Bedo.
