Judder
From Samsung Plasma TV FAQ
Contents |
[edit] ALERT! Judder has been fixed!
Firmware version 1039 fixes judder. If you haven't already upgraded to 1039, get it here.
Notes/Exceptions:
1) Owners of the 5054 TIV model must perform a Service Menu "Reset" after installing the 1039 update to re-enable their side panel connections. Owners of the 5054 TIL models do not have to perform the reset.
2) At this time the is no 1039 firmware update for the 4254 and 4234 LIV models. The 42xx LIL models are fine and can install the upgrade.
[edit] What is judder?
Technically, the term judder was introduced to explain a phenomenon that occurs when movies and other film sources are converted for home viewing using 3:2 pulldown, which uses 4 frames from the original to create 5 interlaced frames in the output. As a result, 3:2 pulldown shows odd frames for 49.98 milliseconds and even frames for 33.33 milliseconds. This mismatch of timing produced a jerky effect that was eventually dubbed as judder.
In Spring 2007, some owners of xx64, xx54, and xx34 Samsung Plasma TV's adopted the term judder to explain a sometimes annoying problem present in this family of PDP's. This particular visual flaw appears when horizontal scrolling news tickers on news, sports, or financial stations are displayed. Specifically, the news ticker starts and stops in small jerky motions instead of moving smoothly. Some owners call this "jumping ticker" effect "tudder," short for ticker judder, to differentiate the ticker judder effect from true judder. Samsung plasmas have no reported visual pulldown judder problems.
To visualize the ticker judder effect, imagine rolling along in your automobile at 10 miles per hour while tapping your foot on the brake pedal. Although the car will continue to roll along, passengers in the car will quickly become annoyed by the constant jerking of the vehicle. The annoying jerky motion of the news tickers in these Samsung models affects some people so much that they return their TVs in exchange for another model or manufacturer. Others, however, are completely unaffected by it.
Judder only occurs on HDMI, component, and coax via cable STB inputs on the xx34, xx54, and xx64 models. It is not evident on RF (antenna or analog coax) inputs. Judder does not occur on the FP-T5084 at all.1
In a September 2007 review of both the Samsung HP-T4264 and the Samsung HP-T5064, Consumer Reports reported the following:
On test patterns displaying steady motion, a slight jerk occurred every few seconds. It was present but less noticeable in regular video content. It occurred on another Samsung model we tested, so it's not an isolated case. Standard-def film-based content had jagged edges on moving objects.
The Samsung had impressive picture quality, displaying bright, colorful images, solid blacks, and satisfying detail. This model and its 42-inch brandmate had a quirk that was most visible with test patterns displaying steady motion-a slight jerk every few seconds. In normal viewing, you're less likely to notice it except in a scrolling news ticker or something similar."1
In their overall summary they referred to judder as "periodic motion hiccup".
[edit] How do I get rid of judder?
Ugrade your display to firmware 1039 or greater to fix judder!
