STV3550 datasheet(25/144 Pages) STMICROELECTRONICS

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STV3550

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3.3.1

Main Features

●

Horizontal resizing using a Sample Rate Converter based on an 8-tap, 32-phase polyphase

filter with a programmable factor from 0.25 to 4.

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Vertical resizing using a Sample Rate Converter based on a 4-tap, 32-phase polyphase filter

with a programmable factor from 0.5 to 4.

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Non-linear horizontal and vertical format conversion with up to 5 programmable segments.

●

Horizontal video output resolution adjustable between 360 and 1920 active pixels per line by

using a programmable pixel clock frequency.

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Vertical video output resolution adjustable between 240 and 1080 active lines per field.

●

Field parity interpolation by controlling the phase offset in the vertical polyphase filter.

●

Programmable Pan and Scan video positioning.

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Color Edge Replacement for Color Transient Improvement (CTI).

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Horizontal and Vertical Luma Peaking.

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Contrast Enhancement: Black, Grey, and White Stretch.

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4:2:2 to 4:4:4 Chroma Up-sampling

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10-bit RGB output

3.3.2

Horizontal and Vertical Rescaling

The rescaling function is performed by two 32-phase polyphase filters (Horizontal and Vertical), of

which all coefficients are stored in a programmable table. In this case, if needed, the transfer

function of the filter can be optimized by referring to a specific up-conversion process. This scaling

Figure 9: Zoom Rescaling Diagram

16:9 TV Screen

VZoom Factor

Linear Zone

Constant

Zone 1

Zone 2

Zone 3

Zone 4

Zone 5

STV3550 Datasheet(PDF) 25 Page - STMicroelectronics

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