What is the Working Principle of a DVD Player?

Last Update Date : Mar 21. 2018

A DVD player is very similar to a CD player. It has a laser assembly that shines the laser beam onto the surface of the disc to read the pattern of bumps . The DVD player decodes the MPEG-2 encoded movie, turning it into a standard composite video signal. The player also decodes the audio stream and sends it to a Dolby decoder, where it is amplified and sent to the speakers.

 

                    s 

 

The drive consists of three fundamental components :

 

● Drive Motor : It is used to spin the disc. The drive motor is precisely controlled to rotate between 200 and 500 rpm, depending on which track is being read.

 

● Laser and a Lens System : The light from this laser has a smaller wavelength (640 nanometers) than the light from the laser in a CD player (780 nanometers), which allows the DVD laser to focus on the smaller DVD pits.

 

● Tracking Mechanism : It can move the laser assembly so the laser beam can follow the spiral track. The tracking system has to be able to move the laser at micron resolutions. 

Thank you for your feedback!

Not finding what you're looking for? We're here to help.

Online

Track my repair

Check the progress of your repair

Chat with us

Live Chat support with a Samsung product expert.
All Days 9AM to 9PM

Email

We'll respond within 24 hours of your request.

Samsung Members Web Community

Log in with your Samsung Account and join the Samsung Members community! Peer to peer support for mobile phones.

Call

1 800 40 72678641 800 40 SAMSUNG

(Toll Free) For Use By Customers In India Only
24 Hours a day / 7 Days a week

+880 9612300300+880 8000300300

(Toll Free) For Use By Customers In Bangladesh Only
8AM - 10PM / 7 days a week

+94 11 7267864+94 11 SAMSUNG

(Toll Free) For Use By Customers In Sri Lanka Only
8AM - 6.30PM / Mon ~ Sat

+977 16600172667 (For NTC customers only)+977 9801572667

(Toll Free) For Use By Customers In Nepal Only
8AM - 8PM / 7 Days a week

Dial as per your country

* For any printer related enquiries, please visit the HP website .

Face-to-face support

Service Online Appointment

Visit Service Center at your convenient time

Samsung Service Centers

Find out more about how you can get face-to-face help.

Contact Us