Progressive segmented frame: Difference between revisions

Revision as of 06:16, 16 December 2016

Revision as of 07:05, 19 December 2016

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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&sig=8ZAl0RqzUYnyxQSmjxiIw4ZJDbE|title=Charles Poynton, Digital Video and HDTV: Algorithms and Interfaces}}</ref>, ''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> or ''movie mode''.<ref name="WSS">{{cite web|url=http://stoneship.org.uk/~steve/palplus.html|title=All You Ever Wanted to Know About PALplus but were Afraid to Ask}}</ref> Other names for PsF used by electronic equipment manufacturers include ''progressive recording'' (Sony), ''progressive scan mode'' (Sony), ''progressive shutter mode'' (Sony), ''frame shutter mode'' (Sony), ''frame mode'' (Panasonic and Canon), ''Digital Cinema mode'' (Panasonic) and ''cinema mode'' (Canon).

== History ==