Bandwidth requirements for 4K display

Bandwidth requirements for 4K display

Postby hubert » Sun Jan 22, 2012 2:19 pm


The 4K display needs huge bandwidth. Let us say we have 4096 x 4096 resolution and we need 24 bit display. At 60 Hz refresh rate the bandwidth requirement is

Bandwidth = 4096 x 4096 x 24 x 60 bits per seconds = 24.159191 Giga bits per seconds

What kind of interfaces support this high bandwidth ?

If we keep vertical resolution lower, at around 2000, we still have bandwidth requirements in excess of 10 Gb/s
hubert
 
Posts: 766
Joined: Tue Dec 27, 2011 1:11 am

Re:

Postby pubhouse » Sun May 13, 2012 8:59 pm

I think that Thunderbolt has high bandwidth but whether it will be able to support that high bandwidth I do not know. I think we need a higher bandwidth connection as a state of art.
pubhouse
 
Posts: 241
Joined: Thu Dec 29, 2011 1:26 pm

Re:

Postby mod » Thu May 17, 2012 11:18 pm

hubert wrote:The 4K display needs huge bandwidth. Let us say we have 4096 x 4096 resolution and we need 24 bit display. At 60 Hz refresh rate the bandwidth requirement is

Bandwidth = 4096 x 4096 x 24 x 60 bits per seconds = 24.159191 Giga bits per seconds

What kind of interfaces support this high bandwidth ?

If we keep vertical resolution lower, at around 2000, we still have bandwidth requirements in excess of 10 Gb/s


I was just reading another place that was selling HDMI Cable. It says

4K - The 4K resolution is 3840 x 2160 pixels @ 24 Hz, and this is 4x that of a 1080p display and the same resolution used by state-of-the-art Digital Cinema systems. A High Speed HDMI Cable is capable of handling the high bandwidth required for 4K support.

Now at this gives a bandwidth of

3840 x 2160 x 24 x 24 = 4777574400 bits per second or 4.777 Gigabits per second - well this is within the reach of HDMI cable.

Notice the alternate lower resolution for the 4K and the lower 24 frame per second ( in place of 60 fps). I think we need higher transfer rate than the one supported by HDMI.
mod
 
Posts: 252
Joined: Fri Feb 03, 2012 1:35 pm

Re:

Postby hubert » Wed Aug 29, 2012 3:32 pm

Many people understand that the highest limit of HDMI is 1920 x 1080. This is incorrect. HDMI support resolution higher than this. HDMI 1.4 reaches maximum resolution of 4K × 2K, i.e. 3840 × 2160p (Quad HD) at 24 Hz/25 Hz/30 Hz or 4096 × 2160p at 24 Hz.
hubert
 
Posts: 766
Joined: Tue Dec 27, 2011 1:11 am


Return to General Hardware Topics

 


  • Related topics
    Replies
    Views
    Last post

Who is online

Users browsing this forum: No registered users and 0 guests