MTL003 Просмотр технического описания (PDF) - Myson Century Inc

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производитель

MTL003

SXGA Flat Panel Controller

Myson Century Inc 

MYSON

TECHNOLOGY

MTL003

(Rev. 0.95)

3.2 Video Processor

General Description

MTL003 possesses a powerful and programmable video processor by providing the following functions:

Scaling Up/Down, Gain Control, Brightness Control, Gamma Correction, and Dithering Control.

The block diagram of Video Processor is as follows:

SCALING

GAIN

BRIGHTNESS

GAMMA

DITHERING

Scaling Factor

Transition Table

Gain Factor

Brightness Factor

Gamma Table

Dithering Table

Fig. 3.2.1 Video Processor Block Diagram

3.2.1 Scaling

MTL003 provides scaling function ranging from 1/32 to 32 for both up and down scaling, and for both

horizontal and vertical processing. Note that the up and down scaling cannot operate in the same time,

because they share the same line buffers.

For scaling up, both horizontal and vertical processing, MTL003 provides four methods:

¨ Pass Mode: Image will be passed through without considering any scaling factor.

¨ Duplicate Mode: Image will be scaled up/down based on scaling factor. Every point of output image

comes from the input. In this method, Output image will have the good contrast but may be non-

uniformed.

¨ Bilinear Mode: Image will be scaled up/down based on scaling factor. Every point of output image data

will be filtered by bilinear filter. In this method, output image will have the good scaling quality but may

be blurred.

¨ Interpolation Table Mode: Image will be scaled up/down based on scaling factor. Every point of output

image data will be filtered by the user defined filter.

Revision 0.95

-9-

2000/06/14

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