AS0142AT datasheet(32/45 Pages) ONSEMI

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AS0142AT

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MULTI-PANEL

STE supports multi−panel views

, these can be 2 or 3

panels

. This feature is ideally suited for applications where

viewing at a junction is required.

Figure 27. Multi−Panel

OVERLAY

The AS0142AT supports graphic overlays.

BITMAP RLE LAYER

Seven RLE layers containing “static” graphic data that

does not change often. Essentially these are bit mapped

graphic overlays.

Each RLE layer has 16K bytes of image space

. 32 colors

per layer. Each color has a YCbCr (8

-8−8 bit) and 8 bits for

the Alpha value (Opacity). The position, size and crop area

can be defined for each layer.

The total number of layers is now 12 (7 RLE, 2 Line, 2

Arc, and 1 Character)

LINE LAYER

A layer that contains line data can also be overlaid

. The

Line Layer would be changed based on a host command and

within that command would be a small number of

parameters like line end points, line width, and color. It also

supports anti−aliasing. Lines can be updated much faster and

easier and are therefore more useful for dynamic overlays.

ARC LAYER

A layer that contains arc data can also be overlaid

. The Arc

Layer would be changed based on a host command and

within that command would be a small number of

parameters like arc center point, arc radius

, arc start degrees,

total arc degrees

, and color. Arcs in this case are described

as circle segments and can be linked to create general curves.

Again these are useful for dynamic overlays.

CHARACTER GENERATOR LAYER

32 by 32 fixed font. Numbers and punctuation. In

decimated mode 16 by 16 fixed font. Up to 4

0 32x32

characters on 4 separate lines

, or up to 64 16x16 characters

on 4 separate lines.

CHARACTER ROM/RAM

The ROM shall contain 191 characters from

UTF−8/Unicode

. It will also support the user inputting up to

64 user−defined characters.

These will be 32x32 in size.

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