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Old 27-12-2006, 19:09   #42
pedantic
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Re: HD Ready LCD TV recommendations

Quote:
Originally Posted by ikthius View Post
why does some scrolling text (say from gillet soccer saturday) seem jittery on some LCD and Plasma tv's?

is this just the refresh rate?

ik
Refresh rate and other "enhancements" can cause this.

Taken from the Pioneer FAQ over at avforums

Quote:
Q: I'm seeing DVD judder / scrolling text ticker tapes with interlace lines through it making it unreadable / seeing a slowdown effect on things like Football - how do I fix this?

A: This relates to Pure Cinema settings. In the normal course of events, Pure Cinema should be OFF (for progressive source) & STANDARD (for interlaced source). If you see scrolling text with interlaced lines, try switching to one of these settings. Also make sure you're using the 100Hz screen refresh setting below.

However, in certain cases, you can set the Pure Cinema setting to ADV (Advanced) as it is likely to stop judder with NTSC DVDs (and won't effect PAL anyway and so is effectively off).

Pure Cinema essentially automatically detects a film-based source (originally encoded at 24 frames/second), analyses it, then recreates each still film frame for high-definition picture quality. Settings are as follows:


OFF - Turns it off
STANDARD - Produces smooth and vivid moving images (film specific) by automatically detecting recorded image information when displaying DVD or high-definition images (e.g., movies) having 24 frames per second. It helps prevent interlacing artefacts on, for example, SKY/Freeview, and is greyed out when watching PAL DVDs.
ADVANCED - Produces smooth and quality moving images (as shown on theatre screens) by converting to 72 Hz when displaying DVD images (e.g., movies) having 24 frames per second. When watching NTSC DVDs this stops judder by converting 75Hz to 72Hz. 72 divided into 24 (fps) = 3, so there is no 3/2 pulldown taking place.

Note these cannot be set as follows:
"Standard" is not selectable when 480p or 720p@60Hz signals are input.
"ADV" is not selectable when PAL, SECAM, 576i, or 1080i@50Hz signals are input.
Neither “Standard” nor “ADV” is selectable when 576p, 720p@50Hz, or 1080p@24Hz signals are input.
You can also read this article here, which covers more ideas for Pure Cinema for a Pio 50" panel.
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