This set of Video Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Digital Light Processing (DLP) Projection System”.
1. Which projection system is capable of projecting clear images of any size without losing the original image resolution?
a) Digital Light Processing (DLP)
b) Reflective
c) Transmissive
d) Rear
View Answer
Explanation: Digital Light Processor is an all display technology that turns image data into light. It is enabled by a DMD (Digital Micro-mirror Device) so DLP is capable of projecting sharp and clear images of any size without losing any of the original image’s resolution. DLP is a display device based on an optical micro electro mechanical technology (MEMS).
2. The DLP chip contains a rectangular array of up to 8.8 billion hinge-mounted microscopic mirrors.
a) True
b) False
View Answer
Explanation: The above statement is false. The DLP chip contains a rectangular array of up to 8.8 million hinge-mounted microscopic mirrors. The DLP chip micro-mirrors move to ON or OFF position depending on the logic value. DLP offers brilliant, colorful and clear image with good contrast.
3. The main part of DLP system is a digital micro-mirror device.
a) True
b) False
View Answer
Explanation: Various types of front projectors are used for displaying pictures on large screen like plasma, LCD and LCOS. But most widely used is Digital Light Processing (DLP) system. The main part of DLP system is digital micro-mirror device. Digital micro-mirror devices are small mirrors which create an image and are laid on a semiconductor chip.
4. How many small mirrors does a DMD contain?
a) 5 million
b) 3 million
c) 2 million
d) 4 million
View Answer
Explanation: A DMD contains around 2 million small mirrors and each mirror is capable of storing one pixel of finished images. Mirror is attached to yoke and hinge which moves to and fro. The space between each micro-mirror is less than one micron.
5. Which of the following filters the light into RGB from which a single chip DLP projection system can create around 16.7 million colors?
a) Projector
b) Color wheel
c) Digital video recorders
d) Reflective projection system
View Answer
Explanation: The white light generated by the lamp in a DLP projection system passes through a color wheel as it travels to the surface of the DMD panel. The color wheel filters the light into red, green and blue from which a single chip DLP (Digital Light Processing) projection system can create around 16.7 million colors.
Sanfoundry Global Education & Learning Series – Video Engineering.
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