To convert one set of values to a higher set of values. For example, HDTV sets upconvert broadcast TV (480i) and DVD content (480i or 480p) to the highest format the set supports (720p, 1080i or 1080p). A/V receivers also provide upconversion.
Also called "upscaling," upconverting is an upsampling operation (see upsample). In a modern home theater, the DVD player, A/V receiver and HDTV provide upconversion capabilities. If the units are all of similar quality, it may make little difference which one performs the upconversion. For example, if the HDTV does the best job, the DVD and receiver upconversion can be turned off. Contrast with downconvert.
From 480i to 720p
To convert a 480i signal to 720p or 1080p, the first step is to deinterlace the 480 lines from 480i to 480p and then upconvert to the higher resolution. See deinterlace.
Upconversion Is Critical
Converting a lower resolution to a higher one is more critical than the other way around, and the quality of algorithms differs widely. These examples are images upscaled using a low-quality circuit (top) and the higher-quality circuit (bottom) in Anchor Bay's VP50Pro video processor. (Image courtesy of Anchor Bay Technologies, Inc., www.anchorbaytech.com)
Also called "upscaling," upconverting is an upsampling operation (see upsample). In a modern home theater, the DVD player, A/V receiver and HDTV provide upconversion capabilities. If the units are all of similar quality, it may make little difference which one performs the upconversion. For example, if the HDTV does the best job, the DVD and receiver upconversion can be turned off. Contrast with downconvert.
From 480i to 720p
To convert a 480i signal to 720p or 1080p, the first step is to deinterlace the 480 lines from 480i to 480p and then upconvert to the higher resolution. See deinterlace.
Upconversion Is Critical
Converting a lower resolution to a higher one is more critical than the other way around, and the quality of algorithms differs widely. These examples are images upscaled using a low-quality circuit (top) and the higher-quality circuit (bottom) in Anchor Bay's VP50Pro video processor. (Image courtesy of Anchor Bay Technologies, Inc., www.anchorbaytech.com)
 | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2009 The Computer Language Company Inc. All rights reserved. |
Additional Resources
- Denon AVR-790
- Editors' note: This review is nearly identical to the Denon AVR-1910, as the two products are extremely similar. The only differences are slightly different cosmetics and the AVR-790 lacks IR inputs/outputs and the ability to drive "B" front speakers.The capability to upconvert analog video sources has become standard on midrange...
- Product reviews 2009-09-29
- Yamaha RX-V565BL
- Editors' note: The Yamaha RX-V565BL is virtually identical to the Yamaha HTR-6250BL, therefore the reviews are essentially the same. For an explanation of why Yamaha has two model names for each receiver, read the company's FAQ.Yamaha is unique among home audio manufacturers in that its prepackaged home theater systems include...
- Product reviews 2009-07-07
- Amazon.com knocks $500 off $7k Mitsubishi LaserVue HDTV. Will anyone buy it now?
- Amazon.com knocks $500 off $7k Mitsubishi LaserVue HDTV. Will anyone buy it now?I wonder what the marginal difference is.Is this a case of trying to sell a grossly overpriced technology for a 6% benefit. I mean, seriously, with LCD TVs of late, the picture is pretty much flawless, so...
- Discussion threads 2009-07-07
- Yamaha HTR-6250BL
- Photo gallery:Yamaha HTR-6250BLYamaha is unique among home audio manufacturers in that its prepackaged home theater systems include the same AV receivers that are offered as standalone units. We received the Yamaha YHT-791 home theater for review and were impressed with the included HTR-6250BL AV receiver compared to other home-theater-in-a-box systems,...
- Product reviews 2009-06-30
- Poll: Blu-ray adoption is slow; big challenges ahead
- Poll: Blu-ray adoption is slow; big challenges aheadLarge TVs and projectorsIf you are running a 30" TV, then I would agree with your statement that the difference between a DVD and a Blu-Ray disk is not noticible ... But on my 140" projected screen, the difference between a...
- Discussion threads 2009-06-22
- Why are plasma HDTVs still the minority view?
- Why are plasma HDTVs still the minority view?Size and Power ConsumptionI think the main issues with plasmas is that they are hard to find below 50" and I would be that most TVs sold today fit into the
- Discussion threads 2009-05-13
- As Blu-ray sales surge, Best Buy holds on as format's top seller
- As Blu-ray sales surge, Best Buy holds on as format's top sellerCan't possibly be trueZDNet has been writing of zero prospects for Blu-ray's since MS lost with it's HD-DVD format. Come to think of it the failure of HD-DVD was also a surprise given the number of articles ZDNet pushed...
- Discussion threads 2009-05-11
- Polk Audio SurroundBar 360 DVD Theater
- We first saw the Polk Audio SurroundBar 360 DVD Theater at the Consumer Electronics Show in January 2008, where we chose it as just one of three home audio finalists for Best of CES. While it ultimately didn't take the crown, we were still looking forward to the final product:...
- Product reviews 2009-03-09
- Pioneer VSX-1018AH-K
- Photo gallery:Pioneer VSX-1018AHJust a few years ago, HDMI connectivity was a major step-up feature on AV receivers; now, it's standard for all but the least expensive models. That's mostly a good thing, because although HDMI can be finicky, its one-cable simplicity makes it much easier to set up an AV...
- Product reviews 2009-01-29
- DTV delay bill fails in House. It
- DTV delay bill fails in House. ItDTV is a redundancy in broadcastIf you shut off analog you will drive the inventors of digital right out of their mind.You're taking the pressure distributed to TV engineers and placing it right of the digital inventor's shoulders.It's just like the time change a...
- Discussion threads 2009-01-28
- Report: Nearly half of HDTV owners don
- Report: Nearly half of HDTV owners doncost is main factor.Most of the points are correct. I want to watch one sports channel in Toronto Canada but subscription is 8.95/- per month. This is above the cost of packages ranging from 65-95 per month. Its better to watch Superbowl on OTA...
- Discussion threads 2009-01-26
- CES 2009: Three Pioneer Blu-ray players due in April, one for $250 [day 2]
- CES 2009: Three Pioneer Blu-ray players due in April, one for $250 [day 2]thanks, but no thanks!Way too expensive!For USB support you are far better off with an upconvert dvd player like philips DVP 5990 or 5992 for less than $60.Blue ray is making this player unafordable, the same way...
- Discussion threads 2009-01-07
- Surveys show consumers love HDTVs, but show some confusion about HD programming
- Surveys show consumers love HDTVs, but show some confusion about HD programmingHDTVI have a 60" mitsubishi and have no HD programing except regular channels you get over the air.I use an upconvert DVD player and the whole thing looks fine to me,i'm 56 years old and have no plans of...
- Discussion threads 2008-11-30
- Blu-ray is dead - heckuva job, Sony!
- Blu-ray is dead - heckuva job, Sony!AgreedThey really have priced themselves out of the "Average Joe" market. Why should I pay to get all of my DVDs on BDs again when they're usually at least 10$ more expensive?Downloaded video can't even compete with DVD, look at the MB/s rateDVD's...
- Discussion threads 2008-10-28
- Panasonic SA-BX500
- Panasonic is hardly the first name we think of when it comes to AV receivers. It's been years since we last saw one, so we weren't sure what to expect from Panasonic's latest entry, the SA-BX500. Depending on your taste, the look is tastefully conservative or just downright boring. The...
- Product reviews 2008-10-15
- Toshiba soups up traditional DVDs
- Toshiba soups up traditional DVDsactually, you are wrong...HD dvd has the higher capacity, and better technology, like BetaMax in the past was superior to VHS but still lost the war. I would love to be able to use HD DVD rather than blue ray for data backupsThis is a first...
- Discussion threads 2008-08-18
- Friday Rant - Here's a perfect example of why DRM sucks
- Friday Rant - Here's a perfect example of why DRM sucksI agreeYep, the UK broadcasts look pretty swanky.But, whenever they're showing clips from US news shows or playing Friends on Channel 4 (so that's about... 90% of the day?), the quality is crap. Whether its just because US TV...
- Discussion threads 2008-04-11
- U.S. trade body to probe Sony on Blu-ray
- U.S. trade body to probe Sony on Blu-rayWhat perfect timingToshiba abandons HD-DVD on Feb 19th, and then this patent suit is filed on Feb 20.HmmmmmRE: U.S. trade body to probe Sony on Blu-rayPatent trolling....steal money from company whose devices are close to infringement, sue for lots of money and settle...
- Discussion threads 2008-03-21
- SlySoft cracks Blu-ray BD encryption
- SlySoft cracks Blu-ray BD encryption"BD+ won't be breached for 10 years"Nothing like a challenge to get people moving. I wonder how those studios who went with Sony instead of Toshiba because of their "better" security feel now.Couldn't happen to a better standard.By Better I mean absolutely ridiculous in...
- Discussion threads 2008-03-19
- Best Buy gives poor HD-DVD buyers some gift card balm
- Best Buy gives poor HD-DVD buyers some gift card balmShouldn't there just be a recycle/replacement program in placethe components of HD-DVD players are still modern and reusable??? Be nice, maybe environmentally friendly to 'recall' and replace/reimburse to get this dying tech tree out of consumers' way and back into...
- Discussion threads 2008-03-19
Neighboring Terms
Premier Vendor Content Whitepapers, webcasts & resources from our Power Center Sponsors
- The best support in the Linux business
-
If Linux is going to power your mission-critical applications, you'd better have the best support known to business. Novell was rated the top provider of Linux technical support.
- Learn more >>
- The more you simplify, the more you save
-
When you transition from your existing Red Hat environment to SUSE Linux Enterprise from Novell, you can recognize dramatic cost savings, perhaps as much 50%
- Learn more >>
- Keep Up With The Latest In Document Management with The DocuMentor.
-
Doc delivers the scoop on today's enterprise content management, printer maintenance, and all other issues related to document management. It's the DocuMentor Blog.
- Learn more >>
- New Online Dashboard for IT Leaders
-
Read about top issues IT decision-makers face every day, plus get cost-effective solutions to real-life IT problems.
- Learn more >>
- Microsoft Dynamics CRM Online - Free Six-Month Trial for Eligible Organizations
-
Microsoft Dynamics CRM Online provides fast online access, simple contact management and better sales performance for a low monthly cost - the best value on the market today.
- Learn more about the free, six-month trial offer>>
Meet Doc
-
-
Here to help you with your Document Management Needs
- Doc is an enigma. Born to a Russian ballerina and a German electrical engineer, he grew up in various locations in the United States. He’s seen the insides of more brands, versions, and generations of printer and printer-related hardware than almost anyone.
- To learn more about this mysterious figure check out his blog on ZDNet and his Workspace on TechRepublic. You’ll be glad you did.
-
Produced by
ZDNet and -
