[argyllcms] Re: Compatibility with i1 (Eye One) Display Pro 3 retail and OEM?

  • From: Kristian Jörg <krjg@xxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Wed, 07 Mar 2012 10:41:34 +0100

Graeme Gill skrev 2012-03-07 09:38:
Kristian Jörg wrote:
If needed I can assist with the mentioned debug settings on the i1d3 with 
Argyll to help find a
method to read plasmas for Argyll profiling.
I had another idea of how to calibrate the i1d3 to the refresh period,
and after some effort, it seems to work when tested on CRT displays.
I've no idea how well or badly it works on DPL or Plasma.

I've updated this<http://www.argyllcms.com/disptools.win32.zip>  for those
interested - use -yr to select "refresh" type display, and -v will show
what the calibration is doing. It will be in the next release too.

It will only help if the display refresh period doesn't divide
evenly into the default integration time of 200msec.

Refresh rates that _do_ divide evenly into 200 msec,
and for which this change is likely to make _no_ difference, is
anything that's a multiple of 5Hz (ie. 25Hz, 50Hz, 60Hz, 75Hz, 100Hz etc.)

[An interesting question is what is the period of Plasma Dithering is ? ]
I remember they state something in the order of 600 hz - whatever that means. It may have nothing to do with any refresh rates though. I remember reading also that the display may be refreshed from both top and bottom simoultaneously crossing over at the middle. But I have no idea if that is correct either - or old methods.

As a matter of fact, everything in this post is mere speculation :)

Other related posts: