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(ATSC - Advanced Television Systems Committee)
The
ATSC Digital Television Standard
was recommended to be adopted as the Advanced TV broadcasting standard
by the FCC Advisory Committee on Advanced Television Service
on November 28, 1995. It covers the standard for HDTV
(High Definition TV).
Video Format
The video scanning formats supported by the ATSC Digital Television
Standard are shown in the following table.
Vertical Lines
|
Horizontal Pixels
|
Aspect Ratio
|
Picture Rate
|
1080
|
1920
|
16:9
|
60I 30P 24P
|
720
|
1280
|
16:9
|
60P 30P 24P
|
480
|
704
|
16:9 & 4:3
|
60I 60P 30P 24P
|
480
|
640
|
4:3
|
60I 60P 30P 24P
|
- The aspect ratio for HDTV is 16:9 as opposed to 4:3 in NTSC,
PAL, and SECAM. (A 33% increase in horizontal dimension.)
- In the picture rate column, the "I" means
interlaced scan, and the "P" means progressive
(non-interlaced) scan.
- Both NTSC rates and integer rates are supported (i.e., 60.00,
59.94, 30.00, 29.97, 24.00, and 23.98).
Dave Marshall
10/4/2001