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RM-36
System Module
Front camera
The front camera has VGA (640x480) resolution, and it is mainly used for video calls. It can also be used as a still
camera and camcorder.
The front camera is controlled and its data is collected by Helen APE. The I/O voltage of Helen is 1.8V and the I/
O voltage of the camera is 2.8V. Because of this, a level shifter is used for the interface between Helen and the
camera.
The front camera has the following characteristics:
Sensor type:
Sensor Photo detectors:
F number/Aperture:
Focal length:
Focus range:
Still Image resolutions:
Video resolutions:
Video clip length:
Video file format:
Exposure:
White Balance:
ISO:
Capture Modes:
Issue 1
Figure 110 Simplified flash LED connection
CMOS
300k
f/2.8
2.13 mm
40 cm to infinity
640 x 480
176 x 144, 128 x 96 both 15 frames per second.
30 seconds or free, maximal clip length in free mode is 1
hour
3GPP, *.3gp (64 kbps in short clip mode, 128 kbps in
maximum mode)
Automatic
Automatic
250 - 2000 (Automatic)
Night mode, Sequence mode, Selftimer
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