STV-974/552S-R01 STMicroelectronics, STV-974/552S-R01 Datasheet - Page 11

• Manufacturer Part Number: STV-974/552S-R01
• Description: KIT DEMO W/VS6552
• Manufacturer: STMicroelectronics

Specifications of STV-974/552S-R01

• Sensor Type: CMOS Imaging, Color (RGB)
• Sensing Range: VGA
• Interface: I²C
• Sensitivity: 30 fps
• Embedded: No
• Utilized Ic / Part: STV0974E, VS6552
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-3891

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Functional description
Color matrix Each pixel (RGB vector) is multiplied by a color matrix to adjust color balance.
Viewfinder and live settings are independent to allow for optimization of both LCD display and
capture for later viewing (i.e. on a PC).
Sharpness enhancement A sharpening two-dimensional mask is applied to Green only and from
interpolation. The resulting data is added (with a gain factor) to the matrix RGB data.
Downscaler The downscaler unit extracts a rectangular region of interest and resizes the image by
resampling video data. Standard image size such as CIF, QVGA and QCIF are available as well as
a fully programmable custom size:
Table 3: Standard image size, VGA input
When custom size is selected, the crop and scale parameters are subject to the following
constraints to ensure proper operation:
Gamma correction A non-linear gain is applied to each pixel’s RGB components to compensate
for the display’s non-linearity. A standard curve is available for image capture for later viewing on a
PC and an S-curve is available for LCD display.
Coder The coder unit converts the internal RGB video stream to a user selectable output video
format. It is based on a YUV digital video encoder with embedded synchronization codes,
compliant with
Table 4
VGA
CIF
QVGA
QCIF
QQVGA
SubQCIF
QQCIF
Custom
●
●
Format
Output image size must be in 8 x 8 pixels increments
Scaling factor can be any value giving an input image size within input limits
.
[1]
640 x 480
352 x 288
320 x 240
176 x 144
160 x 120
128 x 96
88 x 72
max VGA
Image size
, extended with the support of RGB formats for viewfinder usage, as shown in
None
528 x 432
None
528 x 432
None
None
528 x 432
Any
Cropping
None
/ 1.5
/ 2
/ 3
/ 4
/ 5
/ 6
Any
Scaling
82.5% of input image used, centered
82.5% of input image used, centered
82.5% of input image used, centered
See below
Comments
STV0974