How Everything Works
How Everything Works How Everything Works
 

QUESTIONS AND ANSWERS
 
Question 427

To what extent are laser disc players similar to CD players?
Optically, they are identical. However, the laser disc player uses an analog recording technique (non-digital) to recreate the video signal. I think that the lengths of ridges (or perhaps pits) in the aluminum surface are used to control the analog signal strength.
         

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