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Oud 16 januari 2009, 01:31
TipX's schermafbeelding
TipX TipX is offline
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Geregistreerd: 17 september 2004
Locatie: Den Helder Ziggo
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DTV: Panasonic TX-55AX630 CI+ & HUMAX 5200
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Nogmaals, een digitaal signaal moet langs een beeldprocessor om beeld te genereren. En juist de beeldprocessors hebben enorme kwaliteitsverschillen. Ga zelf nu eens kijken naar de duurdere Blu Ray spelers, vaak zitten daar b.v. HQV processoren in. Deze staan bekend om hun geweldige signaalprocessing. Lees het volgende eens; http://www.hqv.com/technology/index1...TOKEN=61965804

Op wikipedia:

Upscaling/Upconverting DVD players contain a scaler, which allows the user to convert lower resolution content into a signal that the display device will handle as high definition content. Depending on the quality of the scaling that is done within the upscaling/upconverting DVD player, the resultant output quality of the video displayed may or may not be improved. The idea behind upconverting DVD players is that when a DVD player is connected to an HDTV, especially one of the fixed pixel display type such as LCD, Plasma display, or DLP and LCoS projection TV, scaling happens anyway, either inside the player or inside the TV. By performing the scaling closer to the source inside the DVD player, the video scaler gets to work with the original signal without the concern of transmission error or interference. There exist independent benchmark tests[1][dead link] verifying that some upconverting DVD players do produce better video quality. However, remember under no circumstances will an upscaling/upconverting DVD player provide "high-definition content", since video information can only be retained or lost in each successive conversion step, but not created. Companies such as Denon, Pioneer Electronics, Panasonic and OPPO Digital were among the first to make upconverting DVD players. Now, almost all consumer electronics brands have this product category. Computer software DVD-Video players like PowerDVD and WinDVD tap into a computer's video card in order to upscale a video frame from the DVD content to the user's set output resolution.
A properly designed upconverting DVD player should have these key parts all with good quality: MPEG decoder, deinterlacing component, and video scaler. Among those, the deinterlacing component is the most important one. If the deinterlacer assembles the video frame in an incorrect manner, no matter how good the video scaler is, it still cannot produce the correct video. A typical example of a well-designed upconverting DVD player is the OPPO Digital DV-983H. It uses an MPEG decoder chip made by MediaTek, a deinterlacer chip ABT102 and a video scaler ABT1018, both made by Anchor Bay Technologies, Inc. (Later revised to use an ABT2010 chip that contains both the deinterlacer and the scaler.)[2] On the other hand, some upconverting DVD players use a single chip that contains the MPEG decoder, deinterlacing component and video scaler. This type of chip is often called SoC (System-on-a-Chip). Low cost upconverting DVD players usually feature the SoC design.

Bron: http://en.wikipedia.org/wiki/Video_scaler

Laatst gewijzigd door TipX; 16 januari 2009 om 01:37 Reden: Info toegevoegd