CH5101A Datasheet, PDF (1/32 Pages) List of Unclassifed Manufacturers – CMOS Monochrome Digital Video Camera

CH5101A
CHRONTEL
CMOS Monochrome Digital Video Camera
Features
Description
• 352 x 288 monochrome active pixel array, 1/3 inch lens The CH5101 is a single chip active pixel CMOS
format ¥
monochrome video camera with digital video output in
• Programmable formats CIF 352x288, QCIF 176x144,
CCIR601 704x288
• Digital output CCIR601 4:2:2 (8-bit)
several formats. Using sophisticated noise correction
circuitry to minimize fixed pattern noise and dark current
effects, the CH5101 provides a supurb quality picture in a
low cost device.
• Multidimensional automatic shutter control
The CH5101 uses a proprietary autoshutter algorithm to
• Below 1 LUX sensitivity
• Programmable I²C Serial bus control:
- Frame rate: 30fps-1fps in eight steps
- Gamma correction
- Shutter speed
- Analog gain
- 16 backlight compensation zones
- Black clamp level
- Power down modes
dynamically control the shutter time, analog gain, and
black clamp level, providing optimum picture and contrast
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under all lighting conditions. The CH5101 also
incorporates extensive on-chip programmable digital
signal processing to maximize the usefulness of the device
in processor driven applications. This includes 16
programmable zones for backlight compensation,
allowing the user to adjust the image to their unique
lighting environment.
• Stand-alone 25fps PAL and 30fps NTSC operation
with all automatic features
• Single crystal operation: Video timing on-chip
• Single 5V power supply
Additionally, at power-up the backlight compensation
zone, power-up condition, and direct A/D output modes
are selectable without IIC control by using the PUD pins.
Requiring a minimum of parts for operation, the CH5101
provides a low cost camera for the next generation
• Less than 0.5 watt power dissipation
videophone, toy, and surveillance products.
Â¥ Patent number x,xxx,xxx patents pending
Photocell
R
352
Columns
Array
O
W
T
I
288
Rows
M
I
N
G
Row Decode
Shutter
Control
Gain
A/D
Black
Clamp
201-0000-033 Rev 1.0, 6/2/99
2-D
Gamma
LPF
Correct
Figure 1: Block Diagram
I ²C
BUS
SD
SC
AS
Timing
&
Mode
Control
Output
Format
HREF
PDP*
HS*
VS*
CLKOUT
Reset*
XI/Fin
XO
PUD[6:0]
TOUT/TOUTB
OVR
Y[7:0]
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