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In Reply to: RE: Integra 1080 upconverting and VLCS? posted by Vic D on September 09, 2008 at 22:19:01
"Upconverting" refers to taking a video signal that arrives at the receiverin one forma and converting it to a different format for output to the display. An example would be taking a composite video input and converting it to HDMI.
"Upconverting" is handy if done well because it let's you connect a number of sources to the receiver via a range of connections and then use only one connection from the receiver to the display. It cuts down on the number of connections you need to the display. Of course, it's only a good idea if the receiver handles the conversion as well as, or better than, your display does. If it doesn't you'll get better results letting the display do the upconversion.
The "up" part of it means it tends to be a one way process, at least at the analog signal to digital signal stage. Many receivers can convert an analog signal (composite/s-video/component) to HDMI but can't convert HDMI to an analog format. It's more common for receivers with upconversion facilities to be able to convert interchangeably between the 3 analog formats so the receiver may be able to downscale a component video signal to composite video if necessary but I suspect anyone with a receiver offering upconversion is unlikely to be connecting it to a display which only accepts composite video.
As for VLSC, to quote from Onkyo's web site:
"Conventional D/A conversion methods reduce digital pulse noise at the conversion stage but can’t remove it completely. Previously only found on our high-end components, VLSC (Vector Linear Shaping Circuitry) employs a unique D/A conversion circuit to overcome this problem. Data is converted between sampling points and these points are joined with analog vectors in real-time to produce a smooth output wave form. The result — a virtually noiseless, smooth analog signal based on the digital source to bring out even the most subtle of nuances in your music, movie soundtracks and even MP3s!"
David Aiken
Follow Ups:
Thanks for taking the time to provide me with a clear explanation. In your opinion would the Pioneer Elite display do a better job of the upconversion than the Integra receiver? Standard Comcast cable and older DVD's played through an, as of yet unpurchased, BlueRay player would be my only concerns.
No idea. I've got no first hand experience of Onkyo receivers or of Pioneer plasmas and I've never used upconversion myself.
I'm a very recent starter in the HT side of things after decades in audio. HT is a recent retirement flirtation for me. Until I got my HD Loewe LCD TV, I was running a CRT with S-video connections at best. With the LCD screen I also replaced my sources and simply went HDMI all the way. It's certainly the simplest connection approach and produces what I think are great results.
David Aiken
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