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Sony KV-34HS420 - Does it upconvert 480p signals?

07-16-2005, 10:54 PM
I've been searching posts here and downloaded the User Manual, but still have yet to find a clear, crisp answer. After Best Buy screwed me out of my Toshiba 34HF84(scumball bastards), I was thinking on the HF85. Now, I see this set has dropped a bit- right into my range. Maybe some of you who own one can help me out...

07-18-2005, 07:12 PM
To answer your question yes. I have the 30" model and it up converts so I'm sure the 34" does so also. I love my Sony 420 great picture on standard def channels as well as HD channels. Good Luck. :hithere:

07-19-2005, 01:03 AM
I have the 4 year old 32XBR400 which is equipped with 1st gen DRC.

The set being discussed is equipped with DRC-MF (multi function). I believe the MF variant is available in versions 1 and 2.

The biggest problem is that Sony never gives the numbers!!! If you search the internet for "DRC", its very hard to find the same explanation twice... Even magazine editors seem to have multiple takes on the technology.

The short story, YES, these sets upconvert almost everything.

The only bit of information that appears in almost EVERY explanation:

480i input is upconverted to 960i

Everything else is converted or manipulated to increase PQ. I have seen the following claims, and note some of them contradict one another...

480p is displayed at 480p
480p is converted to 1080i??
480p is converted to 580p when DRC is set to progressive??
720p is converted to 1080i
1080i is of course displayed at 1080i
DRC manipulates 1080i signals for further PQ increase

Sony only further complicates matters by continually upgrading their DRC engine and fine tuning it, and almost all of the newer sets allow the user to change some of the DRC parameters. I think Im going to try to put together a "DRC Timeline" of sorts. This has got my brain going on this subject again.

Rest assured though, that Sony is pretty much the leader in CRT technology, and whatever their wizards decide to do with your signal is only in the pursuit of visual perfection. These sets are pretty amazing...

07-19-2005, 02:51 AM
Also, as a side note... DRC's behaviors seem to change depending on whether the set is a 4:3 model, or a 16:9.

Here is a good comparison link on the Sony sets...

HS, XS, and XBR comparision (http://www.crutchfield.com/S-1F9leei83Vp/cgi-bin/ProdView.asp?g=148350&id=features_and_specs&i=158KV34HS4)

Im digging around and coming up with quite a bit of info, If anyone can post what they know about DRC this would be helpful. I'd like to be able to put together a comprehensive chart of DRC's behaviors as they relate to input resolution and such...

07-19-2005, 07:18 AM
I am just beside my self since Best Buy put the screws to me on my 34HF84. All I wanted was an HDTV, and now I'm flipping back and forth on what I want and researching some more. But you're right- you can't find the same information consistantly anywhere. The upconversion was one of the biggest selling points of the Toshiba I bought and almost had(well, that and the sexy price tag). I did a google search for DRC and became even more confused afterward. And yes, the only bit of info that was the same on each was the 480i to 960i. I'm trying to coax myself now to not be in a hurry to purchase so I can read a lot and use these forums(they're actually more informative than anything else)...

07-19-2005, 07:20 AM
Hey jss - I just looked at the BB website and the 34HF84 is back there!!!

07-19-2005, 07:27 AM
Yeah, that's the fishy part- it's still on the site, but when I called bitching the day I got the "sorry about your luck" email, they told me that the warehouse is "out of stock" and they "would be getting no more in". They have the 85 on there now, but you can only find it by searching it. With walt scaring the living beJesus outta me about buying the new model, I was considering this Sony. Man, I'm angry, disgusted, disappointed, and anxious all at the same time- and still am without a monitor...

07-19-2005, 08:00 AM
If it were me buying I would still go with the 85 - if it wasn't for walt doing his 'public service' announcement you wouldn't hesitate - it still has the Toshiba name on it and carries the same warranty. As I've pointed out in another thread all these producers are global companies and have to compete to survive. I saw an 85 in Sears for I think $1199 the other day.

07-19-2005, 08:28 AM
I really do like that set the best. The only thing is that the Sony is... well, a Sony. I still think that the Tosh is a great buy at $1200(and Sears is who I think I'm going with) and at least it's assembled in the US. I dunno what to do, but for that price, it sure is attractive...

07-20-2005, 02:24 AM
Ok, heres what I've found... and this all sounds like alot of mumbo jumbo, but this technology really does work. SD looks quite spectacular on my HD set.

1997 - DRC: 2x line doubler for 480i signals. H and V lines are doubled, effectively giving 4x more image density. 460i --> 960i

1998 - DRC-MF (multi function): added user switchable Progressive or Interlaced output. Unconfirmed, 480i is output 580p in progressive mode.

2001 - DRC-MFv1: added Reality (detail) vs. Clarity (smoothness) adjustment. Not much info on that. All incoming signals are compared against an onboard database of HDTV signal formats, and remapped accordingly via algorithms.

2002 - DRC-MFv2: added 1080i image enhancement. Incoming signals are bitmapped for clarity.

480i --> 960i in DRC interlaced mode
480i --> 580p in DRC progressive mode
480p --> 580p in any DRC mode (details are sketchy on this one). DRC has special functions for anamorphic DVD content.
720p --> 1080i
1080i --> enhanced 1080i
1080p --> no support

07-20-2005, 05:08 AM
2002 - DRC-MFv2: added 1080i image enhancement. Incoming signals are bitmapped for clarity.

DRC-MFv2 was announced in August 2004;
The product's core technology, DRC-MFv2, is the latest version of Digital Reality Creation (DRC) technology, which Sony has been developing to differentiate its TVs from those of other manufacturers. The outlines of the technology were disclosed in advance in August 2004.
LINK (http://www.cdrinfo.com/Sections/News/Details.aspx?NewsId=12176)

Sony plans to eventually include DRC-MFv2 in all their Wega displays, but so far it's limited to the Qualia line(001, 005, 006). This is a superb processor for SD material on their 1080p displays.