A Digital Camera(An Embedded System Example)

Block Diagram of Digital Camera

1. CCD preprocessor(charge-coupled device preprocessor)

A device for the movement of electrical charge. Usually from within the device to an area where the charge can be manipulated. For example conversion into a digital value. This is achieved by "shifting" the signals between stages within the device one at a

time.

The charge packets (electrons, blue) are collected in potential wells (yellow) created by applying positive voltage at the gate electrodes (G). Applying positive voltage to the gate electrode in the correct sequence transfers the charge packets.

Block Diagram of Digital Camera

JPEG Codec

JPEG stands for Joint Photographic Experts Group JPEG is a popular format for two reasons:1. It has good compression characteristics on photographic data.2. It lets you adjust the amount of compression.

A photo of a flower compressed with successively more lossy compression ratios from left to right.

Block Diagram of Digital Camera

Pixel Coprocessor

The Pixel coprocessor aids in rapidly displaying images. The Pixel Processor is a dedicated image processing engine designed to accelerate

intensive image processing tasks.

Block Diagram of Digital Camera

Block Diagram of Digital Camera

Block Diagram of Digital Camera

Block Diagram of Digital Camera

Block Diagram of Digital Camera

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