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发帖数: 9 | 1 I need to understand some basics regarding how the optical discs (DVD, CD)
work. For examples, what is an S-curve exactly? When one says "OPU pick up
unit receives reflected optical signals", where exactly do the reflected
signal come from, the coated layer of the indentation "pits", or the
protective layer behind the coat of the data layer? What about multi-layer
discs? What does bit rate mean in the context of optical disc? Thanks! |
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