Progressive segmented frame: Difference between revisions

Revision as of 04:39, 26 February 2016

Revision as of 01:58, 29 October 2016

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The PsF technique is similar to [[Telecine#2:2 pulldown|2:2 pulldown]], which is widely used in 50 Hz television systems to broadcast progressive material recorded at 25 frame/s, but is rarely used in 60 Hz systems. The 2:2 pulldown scheme had originally been designed for interlaced displays, so fine vertical details are usually filtered out to minimize ''[[interline twitter]]''. PsF has been designed for transporting progressive content and therefore does not employ such filtering.

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=httphttps://books.google.com/books?id=ra1lcAwgvq4C&pg=RA1-PA62&sig=8ZAl0RqzUYnyxQSmjxiIw4ZJDbE|title=Charles Poynton, Digital Video and HDTV: Algorithms and Interfaces}}</ref> or ''progressive recording''.<ref name="DCR-HC36/HC46/HC96 OG PR">{{cite web|url=http://www.docs.sony.com/release/DCRHC36-46-96.pdf |title=DCR-HC36/HC46/HC96 Operating Guide |publisher=Sony Corporation |year=2006 |accessdate=2010-08-11}}</ref>

== History ==

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| isbn = 978-0-7923-7422-0

| page = 209

| url = httphttps://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.