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EECS : Electrical Engineering and Computer Sciences
Project Name : VidFx
Board : Calinx 2
Outline :
Analog Video Input : PAL video only.
– 1 Pixel = Picture Element (Dot on Screen)
– 864 Pixels / Line
– 432 (CR, CB)/colour-difference signal
– 625 Lines / Frame
– 25 Frames/Sec
– 720 Active Pixels / Line
– 487 Active (Viewable) Lines / Frame
– Our Cameras: ??? Non-Blanking
Lines
– Interlaced Video (Next Class)

Table 1. Typical Frequencies for Common TV and Computer Video Formats

Video Format
NTSC
PAL
HDTV/SDTV
VGA
XGA
Description
Television Format for North America and Japan
Television Format for Most of Europe and South America
High Definition/ Standard Definition Digital Television Format
Video Graphics Array (PC)
Extended Graphics Array (PC)
Vertical Resolution Format (visible lines per frame)
Approx 480 (525 total lines)
Approx 575 (625 total lines)
1080 or 720 or 480; 18 different formats
480
768
Horizontal Resolution Format (visible pixels per line)
Determined by bandwidth, ranges from 320 to 650
Determined by bandwidth, ranges from 320 to 720
1920 or 704 or 640; 18 different formats
640
1024
Horizontal Rate (kHz)
15.734
15.625
33.75-45
31.5
60
Vertical Frame Rate (Hz)
29.97
25
30-60
60-80
60-80
Highest Frequency (MHz)
4.2
5.5
25
15.3
40.7

Here is an overview of different video display resolution standards and de-facto standards in use:

Computer Standard Resolution
VGA 640 x 480 (4:3)
SVGA 800 x 600 (4:3)
XGA 1024 x 768 (4:3)
WXGA 1280 x 768 (15:9)
SXGA 1280 x 1024 (5:4)
SXGA+ 1400 x 1050 (4:3)
WSXGA 1680 x 1050 (16:10)
UXGA 1600 x 1200 (4:3)
UXGAW 1900 x 1200 (1.58:1)
QXGA 2048 x 1536 (4:3)
QVGA (quarter VGA) 320 x 240 (4:3)
Analogue TV Standard Resolution
PAL 720 x 576
PAL VHS 320 x 576 (approx.)
NTSC 640 x 482
NTSC VHS 320 x 482 (approx.)
Digital TV Standard Resolution
NTSC (preferred format) 648 x 486
D-1 NTSC 720 x 486
D-1 NTSC (square pixels) 720 x 540
PAL 720 x 486
D-1 PAL 720 x 576
D-1 PAL (square pixels) 768 x 576
HDTV 1920 x 1080
Digital Film Standard Resolution
Academy standard 2048 x 1536

System Lines Channel Vision Sound Vision Sound Zweiton Nicam
B 625 7MHz 5MHz +5.5MHz -VE FM +5.742MHZ +5.85MHZ
D 625  8MHz 6MHz +6.5MHz -VE FM +6.742MHZ -
G,H 625 8MHz 5MHz +5.5MHz -VE  FM +5.742MHz +5.85MHz
I 625 8MHz 5.5MHz +6.0MHz -VE FM - +6.552MHz
K,K1 625  8MHz 6MHz +6.5MHz -VE FM - -
L 625 8MHz 6MHz +6.5MHz +VE AM - +5.85MHz
M 525 6MHz 4.2MHz +4.5MHz -VE FM +4.72MHz -
N 625 6MHz 4.2MHz +4.5MHz -VE FM - -

posted on 2005-02-26 22:00  易学  阅读(903)  评论(0编辑  收藏  举报