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DD彻底杯具了
Different Views of SDTV and HDTV-ResolutionDigital TV - SDTV:
- 480i - 704x480 interlaced
- 480p - 704x480 progressive
Digital-HDTV:
- 720p - 1280x720 progressive
- 1080i - 1920x1080 interlaced
- 1080p - 1920x1080 progressive
More Accurate - Listing the resolution and frame rate:
- 480i - The picture is 704x480 - (60/2 interlaced frames per second)
= 30 complete frames per second. - 480p - The picture is 704x480 - 60 complete frames per second.
- 720p - The picture is 1280x720 - 60 complete frames per second.
- 1080i - The picture is 1920x1080 - (60/2 interlaced frames per second)
= 30 complete frames per second. - 1080p - The picture is 1920x1080 - 60 complete frames per second.
Comparison of Digital TV and HDTV Vertical Resolution
(Scan Lines, ‘Rows’ from Top to Bottom)
| Horizontal Resolution
(Vertical Lines, 'Columns' or 'pixels' from Left to Right)
| Aspect Ratio
(The Display’s Width to Height Ratio)
| Display Rate
(frames per Second)
p = progressive scan
i = interlace
| ATSC
Digital TV
Format
| 1080
| 1920
| 16:9
| (30)i, (30)p, (24)p
| HDTV
| 720
| 1280
| 16:9
| (60)p, (30)p, (24)p
| HDTV
| 480
| 704
| 16:9 or 4:3
| (60)p, (30)i, (30)p, (24)p
| SDTV
| 480
| 640
| 4:3
| (60)p, (30)i, (30)p, (24)p
| SDTV
| Note: Although "non-CRT" television sets use different technologies in creating the screen images, and there are other factors involved with how they display the picture, in the end, HDTV-Resolutions are still (720p) and (1080i) - or higher.
Because it is important, yet so often confused, it bears repeating: Vertical Resolution refers to the lines (rows) that are applied (scanned) across the screen, from left to right; these are counted from top to bottom, or vertically - thus the designation, Vertical Resolution.
Similarly, Horizontal Resolution refers to the lines (columns) going from top to bottom, which are counted across the width of the display, or horizontally - and referenced as Horizontal Resolution. |
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