progressive scan question

[zixxer]

Does any tv that accepts component input do progressive scan? Does it have to be "HD"? Do wegas?

 

[Aves]

The TV has to support 480p which means it pretty much has to be HD. Just because a TV has component in doesn't mean that it would output a non-interlaced image.

 

[Shelly21]

What is a progressive scan dvd player versus a non progressive scan dvd player?

 

[NuclearNed]

Any tv that supports 480p can be used with a progressive scan device. I realize that isn't very helpful, but it is the bottom line. My understanding is that there are some non-HD tv's that support it. I would assume that almost all HD tv's can support it.

 

[Confused]

Interlaced does odd lines then even lines (1, 3, 5, 7... then 2, 4, 6, 8...)

Progressive scan works like your standard monitor, doing lines 1, 2, 3, 4, 5...


Progressive scan will give you a better picture.


Confused

 

[NuclearNed]

Originally posted by: Shelly21
What is a progressive scan dvd player versus a non progressive scan dvd player?

Video on most non-HD tv's is displayed in "interlace" mode, which means the picture is composed of alternating signal lines and "blank" lines. Look closely at an old tv and you will see "black" lines. Each time the screen is refreshed, the order of display is reversed (i.e. on scan pass 1, line 1 will be blank and line 2 will be signal. On scan pass 2, line 1 will be signal and line 2 will be blank, and so on).

A progressive scan dvd player is capable of outputting non-interlaced video. In other words, all 480 lines of video are displayed simultaneously with no blank lines. Some people (myself included) argue that this produces a better picture quality.

 

[Jeraden]

Progressive scan (480p) means it sends all 480 horizontal lines of resolution at one time. Non-progressive scan (480i)/interlaced, means it alternates between sending the odd lines and then the even lines. So basically 240 lines at a time, but at twice the rate. The data is sent so quickly your eye merges the 2 sets of lines into one image.

480p generally gives a smoother appearance, which is why progressive scan is preferred, although it is very minimal improvement and sometimes you can't even tell a difference.

 

[woowoo]

Interlace was an early form of analog compression.
It was used to make the channel 6mhz wide.


Progressive is what we get for inviting computer types to the planning meetings for the ATSC standard.
(No offence)