Karl,
Could you explain further? Are you saying that it
just digital capture and the processing of the capture is done
analogue-icly?
Roy
I'm not sure how to read that (!? ;)
basically it is analogue sensor array, used originally
in video cameras - this sensor gathers the 'stream' of values and feeds it to
the digitizing circuitry and the 'digital image' is created by the analogue to
digital converter (kinda like the microphone input on our soundcards in our
computers does to audio).
the transistors on the sensor simply measures levels
relative to 0V or to a reference voltage, these values can either be recorded
in an alaogue fashion as with video on tape, or digitized as our cameras
do.
have a peek here:
cmos sensors are slightly different as explained, in that
their digitizing circuitry is actually in the cmos chip, closer to the sensor
than with a CCD , but both nonetheless capture the light levels in an analogue
way - that is, it registers a voltage somewhere between *here*
and *here* as opposed to the digital concept of *on*
or *off*
these values are rounded to certain values in the
digitization process and the value recorded in a binary way as a digital value
k
