I just got back from Costco, BB, and CC. Want a rear projection tv. I've narrowed it down to the Sony A, Samsung 87, or JVC 1080p.

The thing I noticed on the loop at BB was that whenever the football section came on if there was fast motion on the screen the images become pixilated or blocky on all the rear pro tvs. Is this due to the feed or source or calibration? Or is this something that comes with the technology?

I'm a big sports guy and am really hoping to hear that this has to do with the store.

Thanks for the help.

Gabe

Someone correct me if im wrong, but i believe this is called "macro-blocking". It is due to a rapid pane of the camera left or right, or a fast motion of some sort, with a weak HDTV signal or using Direct TV due to the MPEG-4 compression. That's what I was told.

So this wouldn't happen at my home or it would because I'm forced to use satellite tv?

Thanks for the reply.

Gabe

I just got back from Costco, BB, and CC. Want a rear projection tv. I've narrowed it down to the Sony A, Samsung 87, or JVC 1080p.

The thing I noticed on the loop at BB was that whenever the football section came on if there was fast motion on the screen the images become pixilated or blocky on all the rear pro tvs. Is this due to the feed or source or calibration? Or is this something that comes with the technology?

I'm a big sports guy and am really hoping to hear that this has to do with the store.

Thanks for the help.

Gabe

I just purchased the Mitsubishi WD-Y57 and I am having that same problem, especially when playing the 360 via component..

More than likely its the feed.

So this wouldn't happen at my home or it would because I'm forced to use satellite tv?This phenomena occurs when there is inadequate bandwidth for the content on the screen. It happens to some degree on all 1080i channels, but it is generally more pronounced with satellite sources which add further compression to their signals.

The video processing circuitry in the display also plays a role. High-definition video is native 60i (one field acquired every 1/60th of a second) so some interpolation is required to produce a 60p frame for display on a digital set. Displays with better video processing will exhibit less blurring than those without.

You can see a short video on how this all works right here (http://www.hqv.com/technology/index1/deinterlacing.cfm).

This phenomena occurs when there is inadequate bandwidth for the content on the screen. ...
The video processing circuitry in the display also plays a role. . . . You can see a short video on how this all works [/url].


I agree with bfdtv. External (source) and internal (TV) both have something to do with it. Perhaps the best comparison you could make is with over the air (OTA) HD signal, ideally something recorded on a high-def recorder and fed via HDMI to each TV to the sets native resoluion. I doubt you will find such a set up in store, however. I would read the forums for each TV here and see what the owners are saying about motion issues. Bottom line is that with HD (especially on sets bigger than ~30 inches), video processing (VP) is really important since 1) the amount of data is an order of magnitude greater than non-HD material and 2) all problems become more noticible since they are now bigger and easier to see. Note that really good video processing is expensive and thus for profit companies in many cases use last genration (cheaper) or their own chips to do this with varing degrees of success. Do your research and find a TV with VP that matches your needs or if your serious about PQ (motion blur and artifacts bug you a lot), then don't worry so much about the VP in the TV and buy an outboard VP that will run circles around anything that is put directly in (almost) any consumer TV you can buy. BTW I bought the Sony A2000 knowing the VP was not so hot and saved enough money to buy an outboard VP (Key Digital iSynch HD) and have great combo for less than buying even the Sony XBR with a better overall result for a lot of reasons. Do your own research. The TV owners forums here are a good place for that.