SAB9075H 데이터 시트보기 (PDF) - Philips Electronics
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SAB9075H Datasheet PDF : 40 Pages
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Philips Semiconductors
Picture-in-Picture (PIP) controller for NTSC
Preliminary specification
SAB9075H
PIP modes
The controller contains two independent acquisition-channels which provide the scaling factors to support the range of
different modes. With the external memory of 2 Mbit it is possible to select between single, double and multi-PIP modes.
Table 2 gives an overview of the different PIP modes.
Table 2 PIP modes
MODE
SUB
MAIN
SUB SIZE(1)
PIXELS REDUCTION(2)
MAIN SIZE(1)
PIXELS REDUCTION(2)
4 : 3 main + 4 : 3 sub to 4 : 3 screen or 16 : 9 main + 16 : 9 sub to 16 : 9 screen
1.1
SPS
1⁄16
−
1.2
SPL
1⁄9
−
1.3
DP
1⁄4
1⁄4
1.4
MP3
3 × 1⁄16
−
1.5
MP4
3 × 1⁄16
1⁄4
1.6
MP7
7 × 1⁄16
−
1.7
MP8
7 × 1⁄16
1⁄4
1.8
MP9
8 × 1⁄9
1⁄9
160P, 53L 1⁄4H, 1⁄4V
216P, 72L 1⁄3H, 1⁄3V
304P, 108L 1⁄2H, 1⁄2V
160P, 53L 1⁄4H, 1⁄4V
160P, 53L 1⁄4H, 1⁄4V
160P, 53L 1⁄4H, 1⁄4V
160P, 53L 1⁄4H, 1⁄4V
216P, 72L 1⁄3H, 1⁄3V
16 : 9 sub + 4 : 3 main to 4 : 3 screen
2.1
SPS
1⁄16
−
2.2
SPL
1⁄9
−
216P, 53L 1⁄3H, 1⁄4V
304P, 72L 1⁄2H, 1⁄3V
4 : 3 sub + 16 : 9 main to 16 : 9 screen
3.1
SPS
1⁄16
−
3.2
DP
1⁄4
1⁄4
160P, 72L 1⁄4H, 1⁄3V
216P, 108L 1⁄3H, 1⁄2V
−
−
−
−
304P, 108L 1⁄2H, 1⁄2V
−
−
304P, 108L 1⁄2H, 1⁄2V
−
−
304P, 108L 1⁄2H, 1⁄2V
216P, 72L 1⁄3H, 1⁄3V
−
−
−
−
304P, 108L 1⁄2H, 1⁄2V
Notes
1. The given sub/main sizes are visible PIP sizes, a border is drawn around these PIPs and does not influence these
sizes. The size of the border is 4 pixels wide and 2 lines/fields high.
2. The SAB9075H can be set in automatic mode in which the reduction factors are automatically set by the mode select
and aspect ratio select bits of the I2C-bus. If the automatic mode is switched OFF the reduction factors can be set
manually. This will give more flexibility to adjust the aspect ratios of incoming signals.
PIP positions
The positions are graphically depicted in Figs 5 to 17.
February 1995
11
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