Zenith D52WLCD Series, Руководство по обслуживанию

Страница: 27 / 71

D52WLCD
27
CIRCUITS
CIRCUIT DESCRIPTIONS
2. Digital Part
2.1 DTV Ready Video Chip
(1) Features
• Integrate format converter and display controller into a single chip
• Input video (2 channels)
- NTSC/PAL
- PC output : VGA/SVGA/XGA
- STB output : 1080I, 720P, 480P, 480I
- Display : any combination of NTSC/PC/STB including 2xNTSC, 2xSTB
• High quality NTSC up-conversion
- Noise reduction : adaptive mean filtering
- Time base correction with frames for non-standard signal (ex: VCR)
- Motion-adaptive 3-D de-interlacing with directional interpolation
• Display format : 1080I/768(720)P/480P/480I both 4:3 and 16:9
Europe 576I 100Hz 4:3 and 16:9
• Display mode : PIP/POP/split-screen/zoom-in/video scaling/multi-PIP(strobe...)
• Aspect ratio conversion : wide, zoom, spectacle, text, crop (16:9 display)
pan & scan, letterbox, squeeze (4:3 display)
• Brightness correction (around corner) for PJTV
• Miscellany : internal color space conversion(x3), 3xDAC, various pattern generation
• Applications : DTV ready, high-end analog TV(480p)
• CPU interface - 16 bit (ARM,...)
• Memory : 8M (16Mbitx4) SDRAM, 4M (16Mbitx2) SDRAM
(2) Typical Input Video
Resolution (H x V)
768 X 480
720 X 480
640 X 480
720 X 576
1024 X 768
800 X 600
640 X 480
640 X 350
1920 X 1080
1280 X 720
852 X 480
720 X 480
640 X 480
NTSC
PAL
PC output
Set-Top Box
Output
Scan Type
Interlaced
Interlaced
Progressive
Progressive
Progressive
Progressive
Progressive
Interlaced
Progressive
Progressive
Interlaced
Progressive
Interlaced
Progressive
Interlaced
Frame Rate
29.97, 30
25
60
60 ~ 75
60 ~ 75
70
23.98, 24, 29.97, 30
29.97, 30
23.98, 24, 29.97, 30, 59.94, 60
23.98, 24, 29.97, 30, 59.94, 60
29.97, 30
23.98, 24, 29.97, 30, 59.94, 60
29.97, 30
23.98, 24, 29.97, 30, 59.94, 60
29.97, 30
Aspect Ratio
4 : 3
4 : 3
4 : 3
4 : 3
4 : 3
4 : 3
16 : 9
16 : 9
16 : 9
16 : 9
4 : 3
4 : 3