Celluon - EVO Mouse

Celluon, a South Korean company, devotes to user interaction I/O interface, like virtual keyboard.

3DV systems : ZCam - depth camera

ZCam is the RGB and depth cameras for gesture application. 3DV systems joined Microsoft Natal project for gaming technology development, and later they were acquired by Microsoft in 2009.

How Kinect works with PrimeSense -2

Supplement for my article "How Kinect works with Prime Sense"
Here lists the reference patents of the diagram and pictures.

Canesta: time-of-flight CMOS sensor

Recently, Canesta agree to be acquired by Microsoft.