Image sensors CCD and CMOS

Digital photo cameras don’t use film to capture images  like traditional camera .

Digital cameras use some image sensor ; CCD (charge-coupled device) image sensor or CMOS (complimentary metal-oxide semiconductor) image sensor  .

Both images sensors CCD and CMOS it  convert the light to electrons to create images .

CMOS image sensors are much less expensive to manufacture than CCD image sensors .

In one image sensor are thousands or millions of solar cells which are charged and then the accumulated  value charged it’s read and transported across the chip .

An analog to digital conversion it’s made to  convert analog  signals (every pixels ) in digital signal .

Signal from CMOS sensor it’s amplified and transported using traditional wires and CCD image sensor it use special manufacture technology to transport data across the chip .

Because of manufacturing technology the CCD sensor can capture high quality images ( low noise images ) better than CMOS sensor  but CMOS sensor can be better integrated than CCD .

Because of these the camera based on CMOS sensor can be smaller than a camera based on CCD  sensor  .

The charge-coupled device (CCD) was invented at Bell Labs by George Smith and Willard Boyle  . 

In 1975, George Smith and Willard Boyle  implemented the first CCD camera with image quality  for broadcast television.

Today  CCD technology is  used in many video applications :  security monitoring  , high-definition television , endoscopy , videoconferencing  , copying machines , scanners , digital cameras and others .

CMOS  consumes little power ; 100 times less power than CCD sensor.