STV0684 STMicroelectronics, STV0684 Datasheet - Page 13

• Manufacturer Part Number: STV0684
• Description: IC COPROCESSR VC5700/6700 196BGA
• Manufacturer: STMicroelectronics

Specifications of STV0684

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 196-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-3901

STV0684
3
3.1
3.1.1
Functional Description
Video processor (VP)
The video porcessor (VP) results from STMicroelectronics extensive knowledge and experience
around the colour science for CMOS sensor. The block fulfills a set of functions related to colour
reconstruction from a bayer filter, colour matrixing and sharpening, real-time and programmable
defect pixel correction, AGC, AWB, anti flicker and gamma correction, scaling from the sensor
matrix size to the required video size (either VGA or QVGA) and to any LCD matrix size. This new
video processor benefits from STMicroelectronics latest algorithm developments such as the
patented Noise Reduction Algorithm and anti-vignetting to perform the highest quality standard.
The VP combines hardware and firmware. The main block controller is powered by the E WARP
(8051) microcontroller with RAM based firmware for the highest level of flexibility.
Feature list
System features
Image reconstruction functions
Statistics processor
Image control functions (tasks handled by the EWARP processor)
RAM based firmware
Dual video interface for ViewFinder and movie capture
Bayer or YCbCr input from supported memory
48 Mpixel/s capable processing pipe
Flashgun and shutter support
Bayer/RGB/YUV 4:2:2 output formats
x2, x2.5 horizontal downscaling
Colour channel gains and offsets
Anti-vignetting
Defect correction
NoRA - Active Noise Reduction
Demosaic (bayer->rgb conv) and YUV matrix (rgb -> YUV)
Image crop
General purpose RGB downscaler
RGB matrix
Peaking
Gamma correction
4 programmable accumulators (real time programming)
Programmable zones
Sensor detection, initialisation and configuration
VP mode management: stills, streaming, etc.
Automatic exposure control, automatic white balance
Flicker correction
Functional Description
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