[ale] OT: camcorder/camera combos

[Eric Webb]

Oh.  :)

-E.

On Thursday 12 December 2002 02:44 am, James P. Kinney III wrote:
> All electronics at the device physics level is analog. "digital" is an
> artificial constraint.  If the potential between pins 137 and 14 are
> between 3.41V and 5.22V, then it is a "1". If it is below that lowest
> threshold, it is a "0".
>
> But if you get down to the sub-atomic physics level, things get digital
> again. Devices that rely on tunneling effects have both analog and
> digital physics characteristics. The initial excitation is a very
> digital process (exactly the right energy to elevate to the proper
> electronic level), now some probability get tossed in (what chance does
> _that_ electron have of tunneling through the barrier), and some analog
> characteristics (what "path" the tunneling electron takes determines the
> final potential state. The total transfered electric charge is fixed,
> but the total energy (charge + kinetic is not)) show up in the final
> output signal. At the end, the CCD reads the accumulated charge in each
> pixel. It does this by connecting a near dead short to ground on each
> pixel and reading the resulting current.  Some are sensitive enough to
> read a single electron! Of course, those require a very stable cooling
> setup to get the random noise down.
>
> On Wed, 2002-12-11 at 03:29, Eric Webb wrote:
> > On Wednesday 11 December 2002 02:37 pm, Mazukna, Thomas wrote:
> > > 3. I was making a point that miniDV is digital, not that it is digital
> > > because it is miniDV, hi8 btw is same as miniDV just diferrent tape.
> >
> > Are you on crack?  Hi8 is purely analog.  miniDV is purely digital.
> >
> > Digi8, as I am led to believe, is analog video digitized just before it
> > hits tape.
> >
> > (Does anyone know if all CCDs are essentially analog in nature, or are
> > there some that are truly digital?)
> >
> > -E.
> > _______________________________________________
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> > Ale at ale.org
> > http://www.ale.org/mailman/listinfo/ale

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