Home Video Asylum

TVs, VCRs, DVD players, Home Theater systems and more.

Re: Shadow effects on widescreen tube televisions

12.110.140.11

I think you meant to say bands of darkness at 1mm (not 1 cm) on each side of the image. If so, what you are observing is the artifact of so called scan-velocity modulation "feature". This feature is supposed to make the images "look" sharper by utilizing an optical illusion effect (similar technique has been used on traditional photography for ages). This feature can be turned off on most digital TVs by accessing the service menu. If you really meant 1cm on each side of the image, I have no idea what's causing them.

Also, I wouldn't be surprised if some DVDs and even over-the-air TV broadcasts pre-process the images with scan-velocity modulation type of treatment before even being sent to the TV or broadcast over the air.


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