🚀 go-pugleaf

In article <1992Nov8.120424.44518@kuhub.cc.ukans.edu> christos@kuhub.cc.ukans.edu writes:
>Hello there,
>
>	Has anybody seen the new AT&T video phone that AT&T advertises? It is
>about 2.5 inches by 2 inches of area. Does anybody have any inforamtion about
>the technical specifications of that phone? i.e. modulation scheme used,
>compression ratio, compression coding scheme, pixel width on the screen, #of
>bits/pixel, # of frames/sec etc.
>
>	I would appreciate any relevant response or an AT&T telephone number
>where I can get information about that.
>

For More Information, Call: 1 800 437-9504

Or visit one of the AT$T Phone Centers near you...

For those unfamiliar with the AT$T VideoPhone 2500:

        1. 3.3 inch (diagonal) LCD screen
        2. Fixed focal length CCD camera
        3. Built into "feature phone" (hands-free, speakerphone, memory
           dialing, etc)
        4. "Full color, motion video"
        5. Privacy shutter for lens
        6. Uses "fax modem" technology to transmit "compressed digital video"
           (CLI's CDV) at 14.4kilobits/sec
	7. $1499 MSRP each
	8. ONLY works with other VideoPhone 2500s

I believe that the CDV codec, composed of a single IIT VP chip, produces 
128 X 114 images...which is less than H.261 Q-CIF (176 x 144). The early 
PR claimed frame rate "upto 10 frames/second" which I consider to be 
total baloney.

" A whole generation of young people are demanding video technology, and I
believe that by the year 2001, visual communications will become as important
to consumers as wireless communications," Kenneth M. Bertaccini, president
of AT&T Consumer Products.  

	" Who would you like to see TONIGHT? ...You'll never look
	  at phone calls the same way again. "
					-- AT$T Advertisement

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Ari Ollikainen    ari@es.net     National Energy Research Supercomputer Center
ESnet (Energy Sciences Network)   Lawrence Livermore National Laboratory
510-423-5962  FAX:510-423-8744   P.O. BOX 5509, MS L-561, Livermore, CA 94550
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

christos@kuhub.cc.ukans.edu writes:
>Hello there,
>
>	Has anybody seen the new AT&T video phone that AT&T advertises? It is
>about 2.5 inches by 2 inches of area. Does anybody have any inforamtion about
>the technical specifications of that phone? i.e. modulation scheme used,
>compression ratio, compression coding scheme, pixel width on the screen, #of
>bits/pixel, # of frames/sec etc.

I have seen this phone in a technology demonstration for schools.  Although I
do not have specifics about it, it seem to transmit about 4-5 frames per
second.  The resolution could not have been above 100x100 or so. The b/w screen
in pretty small 3.5-4" in size, so the large pixels don't look to bad. 
 
--Cmh