STV9936P datasheet(16/48 Pages) STMICROELECTRONICS

16 / 48 page

Window Specifications

STV9936P/S

16/48

Table 12 shows an example of the origin and size of windows based on the example shown in

Figure 5,

3.5

Window Background Color

The window background color for each separate OSD window is coded over 4 bits as shown in

Table 13. The first bit (Ti) specifies whether the background is transparent or if a color is displayed.

If the background is transparent (Ti = 1), the active video is displayed as background.

If a color is displayed (Ti = 0), the background color for each separate OSD window is coded over

the last three bits (RWi, GWi and BWi, respectively). Windows are displayed with a white

background by default (7h).

3.6

Window Bordering and Shadowing Effects

3.6.1

Enable Bordering or Shadowing Effects

Bordering or shadowing effects are enabled for each separate OSD window by bits ENBS1,

ENBS2, ENBS3 and ENBS4, respectively.

3.6.2

Bordering or Shadowing Selection

Either the bordering or the shadowing effect is selected for each separate OSD window by bits

BSW1, BSW2, BSW3 and BSW4, respectively.

Table 12: Example of Origin and Size of Windows

Window i

HSWi

VSWi

Window 1

0274

Window 2

5045

Window 3

6463

Window 4

3744

Table 13: Background Color of Each Window

FWR

FAC

Default

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

80h

10h, 15h

1Ah, 1Fh

7h, 7h,

7h, 7h

RWi

GWi

BWi

Table 14: Bordering and Shadowing Parameter Selection

Bit

Description

ENBSi

0: No Bordering, No Shadowing (Default Value)

1: Bordering or Shadowing is selected.

BSWi

0: Bordering is selected (Default Value)

1: Shadowing is selected.

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