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CH5101A Datasheet(Fiches technique) 1 Page - List of Unclassifed Manufacturers

Numéro de pièce CH5101A
Description  CMOS Monochrome Digital Video Camera
Télécharger  32 Pages
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Fabricant  ETC1 [List of Unclassifed Manufacturers]
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CH5101A
201-0000-033 Rev 1.0, 6/2/99
1
CHRONTEL
3
CMOS Monochrome Digital Video Camera
Features
• 352 x 288 monochrome active pixel array, 1/3 inch lens
format
¥
• Programmable formats CIF 352x288, QCIF 176x144,
CCIR601 704x288
• Digital output CCIR601 4:2:2 (8-bit)
• Multidimensional automatic shutter control
• Below 1 LUX sensitivity
• Programmable I2C Serial bus control:
- Frame rate: 30fps-1fps in eight steps
- Gamma correction
- Shutterspeed
- Analog gain
- 16 backlight compensation zones
- Black clamp level
- Power down modes
• Stand-alone 25fps PAL and 30fps NTSC operation
with all automatic features
• Single crystal operation: Video timing on-chip
• Single 5V power supply
• Less than 0.5 watt power dissipation
Description
The CH5101 is a single chip active pixel CMOS
monochrome video camera with digital video output in
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.
The CH5101 uses a proprietary autoshutter algorithm to
dynamically control the shutter time, analog gain, and
black clamp level, providing optimum picture and contrast
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.
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
videophone, toy, and surveillance products.
¥ Patent number x,xxx,xxx patents pending
Figure 1: Block Diagram
Shutter
Control
Gamma
Correct
2-D
LPF
Black
Clamp
Photocell
Array
352
Columns
288
Rows
R
O
W
T
I
M
I
N
G
Row Decode
Gain
TOUT/TOUTB
OVR
I C
BUS
2
SD
SC
AS
Output
Format
Y[7:0]
A/D
Timing
&
Mode
Control
HREF
PDP*
HS*
VS*
CLKOUT
Reset*
XI/Fin
XO
PUD[6:0]




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