AL701 Ver la hoja de datos (PDF) - AverLogic Technologies Inc

Número de pieza

componentes Descripción

Fabricante

AL701

QUAD Video Processor

AverLogic Technologies Inc 

AL700/701/710

BMAPVSIZE plus the vertical size of border or gap in between fonts. The total numbers

of fonts in the horizontal and vertical directions are defined by ICONHTOTAL (#3Ch or

#4Ch) and ICONVTOTAL (#3Dh or #4Dh).

The screen-timing diagram of the OSD window is as follows:

HSYNC

osdhstart

Reg.# 34h,44h

OSDHDE

bmaphtotal

Reg.# 39h,,49h

osdvstart

Reg.#

35h,45h

bmaphsize

Reg.# 38h,48h

hgap

Row 1

Index 1

Row 1

Index 2

Row 1

Index 3

Row 2

Index 1

Row 2

Index 2

Row 2

Index 3

Row 3

Index 1

Row 3

Index 2

iconhtotal

=3-1=2

Reg. # 3Ch,4Ch

background

foreground

Figure 16: OSD Screen Timing Diagram

7.8.3 OSD Bitmap/Font Formatting

The following two examples show how the bitmaps or fonts should be formatted for

internal OSD operation. The first example uses 2-bit per pixel formatting:

©2001,2002-Copyright by AverLogic Technologies, Corp. Preliminary Version C1.1 25

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