What is the difference between rear projection TV and conventional CRT TV?
The major difference lies in the image formation.Conventional CRT TV is based on the Cathode Ray Tube (CRT). A CRT is basically a large vacuum tube in which an electron beam, emanating from a single point in the neck of the tube, scans the face of the tube very rapidly, which, in turn lights up phosphors on the tube’s surface in order to create an image. On the other hand, there are three types of rear- projection TV based on their respective lighting processes C CRT rear projection, DLPTM rear projection, LCD rear projection, and LCOS rear projection. ONfinity Rear Projection Interactive Whiteboard adopts DLPTM rear projection technology which bears one very distinctive characteristic Cthe chip on which the actual image is displayed is called a DMD (Digital Micromirror Device).As such, every pixel on a DMD chip is a reflective mirror.As the video image is displayed on the DMD chip, the micromirrors on the chip tilt very rapidly as the image changes. Then, colour is added as light pass
