Originally Posted by jack0528

I have a question about myth 9. Here is the myth so you don't have to search for it.

Myth #9
All 1080p HDTVs accept 1080p input signals.
Fact: There are a few “1080p” HDTVs out there that have 1920 x 1080 pixels and can display 1080i television signals, but can’t accept an external 1080p signal from a scaling DVD player or HD-DVD and Blu-ray players. Always check the manufacturer’s specifications for signal compatibility

I have one of these tv's I have come to find out the hard way. It has the 1920 X 1080 resolution but will not accept 1080P signals. If this is the case, is the picture I'm getting truly 1080P. Toshiba says it is. I will post their reply on here following this.

Toshiba's response

The process of displaying a 1080i signal as 1080p is called deinterlacing. This does not include any 720p signals as a 720p signal has already been deinterlaced and does not need to be done again. A 720p signal would be upconverted from 720 lines to 1080 lines within the TV. The deinterlaced frame rate would not change.



1080i means 1080 horizontal lines of resolution being rendered on the screen by rastering the odd lines first and then the even lines. At this rate the signal would produce 30 pictures per second.



1080p means 1080 horizontal lines of resolution being rendered on the screen in order from 1- 1080. At this rate the display will produce 60 pictures per second.



Being that ALL movies and TV broadcasts are filmed at only 24 frames per second, any signal whether it is being deinterlaced by the TV or is being sent to a TV at 1080p/60 HAS to be deinterlaced at some point no matter what. What this means is that even TVs that will accept an incoming 1080p/60 signal are still displaying the exact same information. The only difference in that situation is that the signal was deinterlaced BEFORE it got to the TV instead of being deinterlaced by the TV.


Thanks for the input

Jake