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With PsF, a progressive frame is divided into two ''segments'', with the odd lines in one segment and the even lines in the other segment. Technically, the segments are equivalent to interlaced ''fields'', but unlike native interlaced video, there is no motion between the two fields that make up the video frame: both fields represent the same instant in time. This technique allows for a progressive picture to be processed through the same electronic circuitry that is used to store, process and route interlaced video.
The term ''progressive segmented frame'' is used predominantly in relation to [[high-definition video|high definition]] video. In the world of [[standard definition]] video, which traditionally has been using interlaced scanning, it is also known as ''quasi-interlace'',<ref name="POYNTON_DVANDHDTV_P62">{{cite book|url=https://books.google.com/books?id=ra1lcAwgvq4C&pg=RA1-PA62
== History ==
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| isbn = 978-0-7923-7422-0
| page = 209
| chapter-url = https://books.google.com/books?id=_s2BlAeR66YC&pg=PA209
}}</ref> Such a reduction improves compression of the video signal, which is always desirable because of storage and transmission limitations. To ensure compatibility with interlaced-based systems, chroma information in PsF video is sometimes recorded in interlaced format, despite that the content is progressive. This may result in interlaced artifacts being noticeable on colored objects.<ref>
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