This document summarizes how a digital camera works. It contains the following key components: 1. A photo sensitive CCD captures the image according to light brightness. 2. An A/D converter converts the analog signal from the CCD to a digital 8-bit signal which is stored in memory. 3. Color images are formed using a color filter and interpolation to estimate color for each pixel. The document provides details on these internal components and processes that allow digital cameras to digitally capture and store images.

1. WORKING OF DIGITAL CAMERAWORKING OF DIGITAL CAMERA
ARNOB SARKARARNOB SARKAR
IV-SEM. E&TCIV-SEM. E&TC
HCET, JABALPURHCET, JABALPUR

2. INTRODUCTIONINTRODUCTION
Digital camera is one of the remarkable
invention of modern electronics in
photographic field. Its Hi-Fi performance
bring about a revolutionary change in
modern photography.

3. D-cam using digital systemsD-cam using digital systems
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1. A photo sensitive device (CCD)
2. Color Filter
3. A/D Converter
4. Processing Unit
5. Memory Device(CF Card)
6. Compressing Unit

5. FOR MORE INFO...
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6. How Digital Camera WorksHow Digital Camera Works

7. Inside Structure of D-CamInside Structure of D-Cam
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8. Charged Coupled Device CCDCharged Coupled Device CCD
It is made of millions of Photo
diodes. It is used to capture the
image according to the brightness of
light.
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9. Storage of Images In D-CamStorage of Images In D-Cam
1. Compression,
i) Good / Normal 16:1
ii) Better / Fine 8:1
iii) Best / Super Fine 4:1
2. Resolution
1 mega pixel = 1024x768
2 mega pixel = 1600x1200
3 mega pixel = 2048x1536

10. Analog to Digital ConversionAnalog to Digital Conversion
Signal generated in CCD is analog
signal, which is converted into 8-Bit
digital signal with the help of A/D
converter and stored in memory
card.

11. Camera Capture Only Black & WhiteCamera Capture Only Black & White

14. How Color Images FormedHow Color Images Formed

15. InterpolationInterpolation

16. Advantages and DisadvantagesAdvantages and Disadvantages

17. THANK YOUTHANK YOU