Joe Bloggs
12-27-07, 09:00 AM
I put some of this question in another thread but I think it could be more appropriate here.
How does the picture information get sent from an HD-DVD/Blu-ray player to an LCD/Plasma HDTV through the HDMI (or DVI) connection?
Is there a clock on both devices? Is there a piece of code on the player (interrupt driven or in a loop) that passes a new uncompressed image down HDMI every time a timer reaches a certain value (eg. multiple of 1 second div 23.976/25/30 etc.)? Will the clocks in the player and TV not always be in perfect sync or does the TV take the exact timing from the player? Is it a hardware chip in the player that is partially responsible for limitations in frame rates/resolutions or is it partially the software or both? With firmware updates on players could all frame rates and resolutions be possible (even English ones) subject to bandwidth limitations (or is a chip inside stopping this)?
What makes a TV specifically need a 24p capability in the specification/firmware/hardware - I mean if a TV can do 50P/60P why couldn't it also switch to a lower rate automatically if that was being sent by the player? Why still use 23.976 for digital high definition 24p? I thought that was for 3:2 pulldown or something - for proper 24p don't/can't the TVs display an exact multiple of 24?
HDMI 1.3:
Do any of the HDMI insiders know what is happening with HD-DVD/Blu-ray/HD-VMD with regard to HDMI 1.3 and the higher bandwidth and Deep Colour support. Will they ever use the deep colour (or higher bandwidth) for the video on disc or the extra bandwidth for higher resolutions/frame rates or are they only going to use things like the Deep Colour for things like when they composite multiple things in the player (eg. Picture-in-Picture/Subtitles/Scaling) to lessen any artefacts etc.?
How does the picture information get sent from an HD-DVD/Blu-ray player to an LCD/Plasma HDTV through the HDMI (or DVI) connection?
Is there a clock on both devices? Is there a piece of code on the player (interrupt driven or in a loop) that passes a new uncompressed image down HDMI every time a timer reaches a certain value (eg. multiple of 1 second div 23.976/25/30 etc.)? Will the clocks in the player and TV not always be in perfect sync or does the TV take the exact timing from the player? Is it a hardware chip in the player that is partially responsible for limitations in frame rates/resolutions or is it partially the software or both? With firmware updates on players could all frame rates and resolutions be possible (even English ones) subject to bandwidth limitations (or is a chip inside stopping this)?
What makes a TV specifically need a 24p capability in the specification/firmware/hardware - I mean if a TV can do 50P/60P why couldn't it also switch to a lower rate automatically if that was being sent by the player? Why still use 23.976 for digital high definition 24p? I thought that was for 3:2 pulldown or something - for proper 24p don't/can't the TVs display an exact multiple of 24?
HDMI 1.3:
Do any of the HDMI insiders know what is happening with HD-DVD/Blu-ray/HD-VMD with regard to HDMI 1.3 and the higher bandwidth and Deep Colour support. Will they ever use the deep colour (or higher bandwidth) for the video on disc or the extra bandwidth for higher resolutions/frame rates or are they only going to use things like the Deep Colour for things like when they composite multiple things in the player (eg. Picture-in-Picture/Subtitles/Scaling) to lessen any artefacts etc.?