Toshiba has \~10% of the image sensor chip market according to Image Sensore World.
http://4.bp.blogspot.com/_PsITwyTOc4Y/Sv3Lq8sxSPI/AAAAAAAAAVE/KZoHqie87bU/s640/Don+Scansen+2008+Market+Shares.jpg
Here is a short quiz on common technical teminology. Unfortunately eligible to win only for those living in the U.S. Of course this is a simple marketing trick by Toshiba to boost their interest for their products, especially in a time where the eye is on back-illuminated CMOS sensors. But still, enjoy!

*TEST YOUR KNOWLEDGE OF CAMERA DESIGN -- AND BE ENTERED TO WIN ONE OF SIX $50 AMAZON GIFT CARDS!*
(Sponsored by Toshiba & Hosted by Electronic Design)

/Do you have an eye for camera design? Do you understand image sensor technology, dynamic range, aliasing and more? Then take the professor’s challenge from Electronic Design and Toshiba and test your “camera smarts”!/

http://popquiz.electronicdesign.com/toshiba-image-sensor/default.aspx