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 ...