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參數(shù)資料
| 型號(hào)： | ZIVA-5 |
| 英文描述： | ZiVA-5 TrueScan? Progressive-Scan DVD |
| 中文描述： | 基瓦- 5 TrueScan？逐行掃描DVD |
| 文件頁(yè)數(shù)： | 3/9頁(yè) |
| 文件大?。?/td> | 231K |
| 代理商： | ZIVA-5 |
2
Frame A
Frame B
Frame C
Field
A
Field
D
Field
D
Field
C
Field
C
Field
C
Field
B
Field
B
Field
A
Field
A
Frame D
Frames from original film
souce at 24 progressive
frames per second
Fields from Telecine
process at 60
interlaced fields per
second to create a
DVD-Video title
When played on a DVD
player, fields are displayed
in order at 60 fields per
second or 30 frames per
second for display on a
standard analog NTSC TV
Frame A
Frame C
Frame D
Frame B+C
Frame A+B
Figure 1: 3:2 Pull-down Process
Interlaced, NTSC Video (480I)
National Television Standards Committee (NTSC) interlaced video, sometimes called
480I or 480-line interlaced, is the television signaling standard used in the USA, Japan
and other countries worldwide, to produce 60 fields per second interlaced video. This
standard is 50 years old and most televisions manufactured today are based on this
technology.
Progressive-scan, 480P Video
480P or 480-line progressive-scan is an Advanced Television Systems Committee
(ATSC) television video signaling standard that is part of the Digital Television (DTV)
standard for 60 frame-per-second video. On December 24, 1996, the United States
Federal Communications Commission (FCC) adopted DTV as the standard for all US
broadcast television. Many other countries have joined the DTV initiative. DTV is
becoming the standard for digital TV’s manufactured for sale worldwide.
De-interlacing
The process of reconstructing 480P frames from 480I fields is called de-interlacing.
480I can either be the result of the Telecine process, originating from film, or from
interlaced video sources, such as video cameras. The 480I conversion back to the
original-film progressive-scan format has many advantages, such as noticeably sharper
images, no flicker, and no scan lines associated with interlaced scanning. Figure 2
illustrates the benefit of progressive-scan.
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