STV0684 datasheet(14/49 Pages) STMICROELECTRONICS

14 / 49 page

Functional Description

STV0684

14/49

Functional Description

3.1

Video processor (VP)

The VP is the result of STMicroelectronics extensive know-how and hard work around the colour

science for CMOS sensor. The VP block fulfills many 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 to the required video and

LCD panel resolution. This new video processor benefits from STMicroelectronics latest algorithms

development such as the patented Noise Reduction Algorithm and anti-vignetting that ensures the

highest quality standard.

The VP combines hardware and firmware. The main block controller is powered by a 8051 E WARP

microcontroller, with RAM based firmware for the highest level of flexibility.

Feature list

System features

● RAM based firmware

● Dual video interface for simultaneous ViewFinder and movie capture

● Bayer or YCbCr input from supported memory

● 48Mpixel/s capable processing pipe

● Flashgun and shutter support

● RGB/YUV 4:2:2 output formats

Image reconstruction functions

● x2, x2.5 Horizontal downscaling

● Colour Channel Gains and Offsets

● Anti-vignetting

● Defect correction

● NoRA - Active Noise Reduction

● Demosaic (bayer->rgb conv)

● YUV matrix (rgb -> YUV)

● Image crop

● General purpose RGB downscaler

● RGB matrix

● Peaking

● Gamma correction

Statistics processor

● 4 Accumulators - programmable on the fly

● Programmable zones

STV0684 Datasheet(PDF) 14 Page - STMicroelectronics