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notaclue - that last link of yours was interesting, and more informative than many of those merely laughing at the silly idea of the green pen. 


I wonder if it's worth debating the following but I'll give it a shot...


Can I ask about jitter?   :duck:   When trying to justify to myself how the Stoplight might work, I'd got the impression that the suggested mechanism was that the reflected laser light caused an increase in jitter, rather than causing misreads of ones and zeros.  Can anyone explain roughly how the light signal received by the photodetector is coverted to the digital output as fed to the DAC (whether onboard or seperate)?  I mean, if the light signal is 'noisier' how, if at all would this manifest itself?  (I'd be very interested in this for considering all CD treatments, not just the green pen)


Martin


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