ASX340AT datasheet(13/54 Pages) ONSEMI

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ASX340AT

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Image Flow Processor

Image and color processing in the ASX340AT are

implemented as an image flow processor (IFP) coded in

hardware logic. During normal operation, the embedded

microcontroller will automatically adjust the operation

parameters. The IFP is broken down into different sections,

as outlined in Figure 9.

Figure 9. Color Pipeline

Test Pattern

Generator

Black

Color Correction

Aperture

Correction

(12−to−8 Lookup)

Statistics

Engine

Color Kill

YUV to RGB

Raw Data

10/12−Bit

RGB

RAW 10

8−bit

RGB

8-bit

YUV

Parallel

Output

Interface

RGB to YUV

Digital Gain Control

Lens Shading

Correction

Defect Correction,

Noise Reduction,

Color Interpolation

MUX

IFP

Parallel Output Mux

Pixel Array

ADC

Analog Output Mux

NTSC/PAL

Overlay Control

Test Patterns

During normal operation of the ASX340AT, a stream of

raw image data from the sensor core is continuously fed into

the color pipeline. For test purposes, this stream can be

replaced with a fixed image generated by a special test

module in the pipeline. The module provides a selection of

test patterns sufficient for basic testing of the pipeline.

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