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Embedded Systems in Digital Camera
1,229
Transcript
- Processing images and storing in memory
- When shutter pressed:
- Image captured
- Converted to digital form by charge-coupled device (CCD) or CMOS(Complimentry metal oxide semiconductor)
- Compressed and archived in internal memory
- Uploading images to PC
- Digital camera attached to PC
- Special software commands camera to transmit archived images serially
Embedded Systems in
Digital Cameras
History
- Steven Sasson as an engineer at Eastman Kodak invented and built the first digital camera using a charge-coupled device image sensor in 1975. The first camera was built in 1660.
- The first commercially available digital camera was the 1990 Dycam Model 1; it also sold as the Logitech Fotoman. It used a CCD image sensor, stored pictures digitally, and connected directly to a computer for download.
- The first consumer camera with a liquid crystal display on the back was the Casio QV-10 in 1995, and the first camera to use CompactFlash was the Kodak DC-25 in 1996.
- 1999 saw the introduction of the Nikon D1, a 2.74 megapixel camera that was the first digital SLR developed entirely by a major manufacturer, and at a cost of under $6,000 at introduction.
A Simple Digital Camera...
- Captures Images
- No need for film, digital images
- Quantity depends on number of bits per image.
- Downloads images to PC
- High capacity flash memory
What is an embedded system?
- An embedded system is a combination of hardware
and software, designed for a specific application.
- Many other basic features.
- The embedded system in the digital camera is
designed for the following purposes:
- Data collection.
- Data storage.
- Data representation.
-Chinmay Kalnawat
10B128
A Digital Camera has 2 Key Tasks...
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