LG GB220 - Camera Interface(1.3 M Fixed Focus Camera)

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LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3.13 Camera Interface(1.3M Fixed Focus Camera)
3.13.1 PMB8810 Camera Interface
The Camera Interface (CIF) represents a complete video and still picture input interface (see Figure 26).
The CIF contains image processing, scaling, and compression functions. The integrated image processing unit
supports image sensors with integrated YC
b
C
r
processing.
Scaling is used for downsizing the sensor data for either displaying them on the LCD, or for generating data
streams for MPEG-4 compression. In general, YC
b
C
r
4:2:2 JPEG compressed images should use the full sensor
resolution, but they can also be downscaled to a lower resolution for smaller JPEG files. Scaling also can be
used for digital zoom effects, because the scalers are capable of up-scaling as well.
CIF
All data is transmitted via the memory interface to an AHB bus system using a bus master interface.
Programming is done by register read/write transactions using an AHB slave interface.
Figure 3.13.1 Block Diagram of Camera Interface