5.12 Design Example: Digital Still Camera

In this section we design a simple digital still camera (DSC). Video cameras share some similarities with DSCs but are different in several ways, most notably their emphasis on streaming media. We will study a design example for one subsystem of a video camera in Chapter 8.

5.12.1 Theory of Operation and Requirements

In order to understand the digital still camera, we must first understand the digital photography process. A modern digital camera performs a great many steps:

• Determine the exposure and focus.

• Capture image.

• Develop the image.

• Compress the image.

• Generate and store the image as a file.

In addition to actually taking the photo, the camera must perform several other important ...

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