Information About Cmos Sensor Output

CMOS in an abbreviation of "Complementary Metal Oxide Semiconductor." CMOS sensors are widely used in digital cameras and camcorders to produce analog/digital output representing each picture element, or pixel, in an image.

  1. Output

    • The output from a CMOS sensor, itself, is a physical electric charge and so can be described as analog. However, the analog output is subsequently converted into a digital signal -- a series of numerical values -- that is processed by the electronic circuits within the camera or camcorder.

    Electric Charge

    • Each pixel in a CMOS sensor registers the amount of light falling upon it and converts the light into a corresponding number of negatively charged particles, called electrons. The electrons generate an electric charge that is proportional to the number of photons, or light particles, falling on the sensor.
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    Digitization

    • The electric charge is converted to an analog voltage that is amplified and sent to a device known as an analog to digital converter. Here, the analog signal is digitized or converted into numbers that can be understood by a computer.

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20th Jan 2015

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