[EMAIL PROTECTED] wrote:
>
> Correct me if I'm wrong, but isn't an MD encoded optically? Maybe I'm just
> mistaken, but there better be a damn good reason for having a Class 1 Laser
> product sticker on my deck...
>
Yes and No.
MD is magneto-optical. The material of the disc is a special material that has
a special carecteristic. The atoms can be alligned into a certain direction when
the temporature is higher than 160 degrees Celcius.
In order to heat the material a laser is used. In order to change the direction
of
the material, a magnet is used.
Atoms reflect more or less light depending on the direction they have. Thus you
can
read the direction (thus the information) using a laser.
Cheers,
Ralph -> changing directions without magnetics or laser.
--
=======================================================================
Ralph Smeets Functional Verification Centre Of Competence - CMG
Voice: (+33) (0)4 76 58 44 46 STMicroelectronics
Fax: (+33) (0)4 76 58 40 11 5, chem de la Dhuy
Mobile: (+33) (0)6 82 66 62 70 38240 MEYLAN
E-Mail: [EMAIL PROTECTED] FRANCE
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"For many years, mankind lived just like the animals. And then
something happened that unleashed the powers of our imagination:
We learned to talk."
-- Stephen Hawking, later used by Pink Floyd --
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