[opendtv] Re: Some results - 1080p @ 60 is Next?

Terry,

Very good and correct observation!

There are several reasons - one main reason is perhaps:
I looked into the gamma curve of the two displays and found that at lower
luminance levels between 16 and 64 the LCD provides about 80% more luminance
than the PDP. Thus, compression artefacts become more visible. Now, we can
start arguing about the right gamma curve for consumer displays.........

Regards,
Hans



-----Original Message-----
From: tsmith@xxxxxxxxxxxxx [mailto:tsmith@xxxxxxxxxxxxx] 
Sent: Dienstag, 8. Mai 2007 00:06
To: opendtv@xxxxxxxxxxxxx
Cc: Hoffmann, Hans
Subject: Re: [opendtv] Some results - 1080p @ 60 is Next?



Hans

I have seen your work reported elsewhere in the IEEE Transactions on
Broadcasting and the SMPTE Journal. However, I notice in these slides that
1080p appears to rate higher or, the same as, 720p on the PDP while on the
LCD it is consistently lower, about 5 points, for bitrates above 8 Mbits/s.
For 8 and 6 Mbits/s the PDP and LCD seem to be about the same.

Is there a reason for this?

Terry

Terence J. Smith
Senior Broadcast Engineer
Technical Solutions Team
AUSTAR Entertainment Pty Ltd
(    +612 9394 9888
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*       tsmith@xxxxxxxxxxxxx
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             "Hoffmann, Hans"                                              
             <hoffmann@xxxxxx>                                             
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             04/05/2007 14:36          [opendtv] Some results - 1080p @ 60 
                                       is Next?                            
                                                                           
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Colleagues,

a little contribution to the discussion on 1080p/50 and 720p/50 and
1080i/25 form our side (see the attached PDF).

Regards,

Hans


European Broadcasting Union
Hans Hoffmann - Senior Engineer
Technical Department
L'Ancienne Route 17a
CH-1218 Grand Saconnex Geneva
Switzerland
Tel:+41 22 717 2746
Tel-Mobile: +41 79 249 3550
Fax: +41 22 747 4746
E-Mail: hoffmann@xxxxxx


      -----Original Message-----
      From: opendtv-bounce@xxxxxxxxxxxxx
      [mailto:opendtv-bounce@xxxxxxxxxxxxx] On Behalf Of ShLampen@xxxxxxx
      Sent: Freitag, 4. Mai 2007 03:32
      To: opendtv@xxxxxxxxxxxxx
      Subject: [opendtv] Re: 1080p @ 60 is Next?

      I forgot to add that the distance (based on the SMPTE formula) for
      1694A is 270 ft.  That's half-way to the cliff so if you look at bit
      errors or eye patterns you can probably go double that.  And with the
      best Gennum chips, probably farther still.

      Steve Lampen
      Belden



      See what's free at AOL.com.





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