How does CD drive work in car, since a car vibrates a lot

Status
Not open for further replies.
M

matrixofdynamism

Advanced Member level 2
Joined
Apr 17, 2011
Messages
593
Helped
24
Reputation
48
Reaction score
23
Trophy points
1,298
Activity points
7,681
A CD drive has to aim a laser at a specific track in the CD. I am not sure about the details of how this disk drivers work since all bits in CD won't be data bits, there will be bits existing to help the hardware read the disk from the correct track and sector. However, since cars can vibrate quite a lot especially on bumpy rides which can cause the laser aim to fail, how does a disk drive work in such harsh environment?
 

This is similar to the problem of a CD player dangling from a runner's waist. The circuitry reads ahead a few seconds (as much as it is able), storing data and playing it back during times of jittery motion.
 

There is also RS encoding done on the data that allows for errors to be corrected, so if the error bursts are short enough they can be corrected before going into that buffer BradtheRad mentioned.
 

The player is specifically intended for car usage. It has some parts that would lessen or eliminate vibrations.
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…