whats the difference between 3ccd and CMOS

Cmos is not just for stills. There is a new sony that is a 3chip cmos. The RED is cmos.

I can't, unfortunately explain any of the technical differences, or pro/con of each.

Jason
 
CMOS isn't just for stills, although that's where they've traditionally been used. CMOS chips are now being used in video cameras (like the new Canon MV10, Sony HC1/HC3, Sony AVC-HD cameras, and ... oh yeah, RED!)

CMOS is a different technology than CCD, and for the time being they're just two different approaches to solving the same problem. I would expect that as technology progresses we'll probably see more and more CMOS, but for right now the vast majority of video cameras are still using CCDs.
 
hi guys, whats the difference between 3ccd and cmos?
Click to expand...

Stands for Complementary metal–oxide–semiconductor , and is not just used in Imaging devices. It is a type of IC that uses a different structure for its logic gates. Before TTLs (Transistor Transistor Logic) was used (and is still used).

CMOS is structured such that it has symmetrical P and N type pairs of MOSFETs in its logic functions.

The advantages is higher noise resistance and low power consumption.

Also with CMOS imagine devices they are more comprehensive than their CCD brethren’s, since with CCDs they need to have external electronics to complete the imaging chips, where as with CMOS its almost a complete "system on a Chip" design.

3CCD refers to a design in which an optical prism is used to separate light into its primary colours namely RED, GREEN, BLUE. These are then captured on each individual CCD’s (three of them to be precise, hence the name 3CCD).

The benefit of this is that colour sampling Vs resolution is 1:1 (i.e. every pixel is available for every colour). Where as with 1CCS/CMOS a pattern has to be employed, since these devices capture in monochrome and colour is gained by having some pixels (picture elements) doped in either Red green or Blue. The colour is then interpolated.

There are some disadvantages with 3CCDs e.g. alignment problem, loss of light etc.

Hope that helps

Anhar Hussain Miah

P.S I would love to get my hands on ECL's (Emitter coupled logic) Chips, alas my professor explained that they are used mostly in Military equipment.
 
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