URC DMS-AV Owners Manual - Page 27
Video Test Patterns
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DMS-AV HOME THEATER AMPLIFIER Video PReP® Progressive Re-Processing (PReP®) is the industry's first technology designed specifically to improve progressive video signals by removing the artifacts caused by inferior interlaced-to-progressive conversion. Video signals that originate in the interlaced format used by most broadcasters often suffer degradation when the signal is converted to the progressive format required by digital displays. If this process is not done well, it results in artifacts which will be amplified during scaling or other processing such as detail enhancement. The patent-pending PReP technology addresses this problem be reverting the progressive video signal to its original interlaced format so that it can be reconverted to progressive using a higher-quality deinterlacer. The DMS-AV has two available options for PReP - Auto and Off. By default, PReP is set to Off. This value can be set in the on-screen menu or the URC Accelerator Application, in the Video Adjust section. Video Test Patterns The DMS-AV firmware includes eight video test patterns used to calibrate a video display device. Typically, an external video test pattern generator is required for professional display device setup. The DMS-AV provides access to these patterns within the on-screen display, and also accessible via the URC Accelerator Application. The video test patterns available are: Frame Geometry 'Frame/Geometry' test pattern is used to verify that the image is positioned correctly on your display. Bright/Contrast The 'Brightness/Contrast' test pattern will assist you in setting up both the brightness (black level) and contrast (white level) of your display. The 'Brightness/Contrast' test pattern is composed of 4 quarter-screen blocks. Two of the blocks have a background level of standard black and the other two blocks have a background level of standard white. Embedded in the black blocks are 3 bars. One is 4 IRE below black (blacker-than-black), one is 1 IRE above black, and the third is 2 IRE above black. Embedded in the white blocks are 3 bars. One is 1 IRE above white (whiter-then-white), one is 1 IRE below white, and the third is 2 IRE below white. The bottom two blocks differ slightly from these levels. For the bottom two blocks, the blacker-than-black is at the lowest possible luma level and the whiter-than-white bar is at the highest possible luma level. Page 28
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