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RE: [802SEC] Re: Wireless LCD Projectors for use at July plenary at HR-SF

Roger,  I think that's what we're proposing to do with Matt Sherman volunteering to be that "someone else".  

Thanx,  Buzz
Dr. Everett O. (Buzz) Rigsbee
Boeing SSG
PO Box 3707, M/S: 7M-FM
Seattle, WA  98124
ph:  (425) 865-2443
fax:  (425) 865-6721

 -----Original Message-----
From: 	Roger B. Marks [] 
Sent:	Tuesday, July 01, 2003 9:39 PM
Subject:	RE: [802SEC] Re: Wireless LCD Projectors for use at July plenary at HR-SF


Maybe. I don't know.

I did come across an alternative project:

Runs about $500. Better? Worse? Same? It's a research project.

If this were up to me, I'd do nothing and wait for someone else to do 
the research.


>I would prefer a separated approach, but as closely as I can tell 
>from the data/product sheet on the references that you provided 
>these two devices are emulating display memory and would have to be 
>fully refreshed.
>I believe that we would be better off hooking a PC to the projector 
>and running some sort of collaboration software between PCs
>At 03:53 PM 7/1/2003 -0600, Roger B. Marks wrote:
>>I am skeptical about how these things work. Most of our meeting 
>>images are static. If the software is smart enough to take 
>>advantage of the static images, it will probably be a minimal 
>>disruption to our networks. If, on the other hand, it's just 
>>constantly running an A to D convertor and throwing all the 
>>uncompressed D onto the LAN, then we'll indeed be wishing for 
>>802.11e. I can imagine a great range of variability in how well 
>>these interfaces function. And also in how useful, or how annoying, 
>>the driver software is.
>>We have a well-defined interface, so let's use it. Instead of 
>>buying the network bundled in the projector, I'd prefer that we 
>>optimize the projector and interface separately. In other words, we 
>>should buy a separate wireless interface and try it out. This way, 
>>we could attach the interface to any of our projectors, depending 
>>on our need.
>>I checked the web and found two products like this. Both are under $300:
>>If we are going to venture into wireless projector control, I 
>>prefer this route.
>>At 5:19 PM -0400 03/07/01, <> wrote:
>>>Hi everyone,
>>>So I'll add one more opinion to the pile.  I think it is important that
>>>we try new things and see how they work, especially if they are our own
>>>technologies.  If we won't buy it, who will?
>>>I can see value for a projector with a wireless interface - where a guy
>>>in the back of the room can quickly display their objection on the
>>>screen, or where you might even be able to briefly split the screen
>>>between two inputs for comparison.  But frankly, I am perplexed by the
>>>software and control issues - another reason why I want to try it so I
>>>can see first hand if it works or not.
>>>Another area of personal concern for me is whether the RF environment in
>>>our meetings can hack it.  I'm already not very happy with the
>>>performance we get out of our current WLAN without a video load.
>>>802.11e (QoS) is not out yet.  So, I can't wait to see what happens when
>>>we add a video load in with our existing loads.  Will the WLAN be able
>>>to handle the load?  Will other traffic in the area impact the quality
>>>of the video on the projector?
>>>I view IEEE 802 not just as a standards development organization, but a
>>>as a potential test bed for our own technologies.  Actually, I wish we
>>>did more testing and evaluation of the network we run here.  The one
>>>thing I will caution is I'm not sure myself if an investment in the
>>>projector will be worth while, so don't buy more than one.  I think it
>>>is worth buying one though just to find out if it is worth while.
>>>Matthew Sherman
>>>Vice Chair, IEEE 802
>>>Technology Consultant
>>>Communications Technology Research
>>>AT&T Labs - Shannon Laboratory
>>>Room B255, Building 103
>>>180 Park Avenue
>>>P.O. Box 971
>>>Florham Park, NJ 07932-0971
>>>Phone: +1 (973) 236-6925
>>>Fax: +1 (973) 360-5877
>>>-----Original Message-----
>>>From: Howard Frazier []
>>>Sent: Tuesday, July 01, 2003 2:08 PM
>>>To: Rigsbee, Everett O
>>>Cc:; 802 @F2F Dawn S;;
>>>802 @F2F Jennifer Hull; 802 Bob Heile; Bob O'Hara; Paul Nikolich
>>>(E-mail); 802 Roger B. Marks; 802 Stuart J. Kerry; Tim Godfrey; 802. 11
>>>Al Petrick (802-11 Al Petrick); Don Berry; 802 Exec;
>>>Subject: [802SEC] Re: Wireless LCD Projectors for use at July plenary at
>>>Personally, I would not pay extra $ for a projector
>>>with a wireless interface.  Based on bitter experience,
>>>I never add software or hardware to my laptop while I
>>>am traveling, so I loathe the idea of having to add
>>>some new driver for this interface.
>>>The time required to connect a cable to a projector
>>>is minimal.  Time is occasionally wasted when a
>>>presenter can't figure out how to toggle between
>>>their laptop's LCD and the external monitor interface,
>>>or when this simple action produces a "Microsoft Moment".
>>>I can't see where adding a couple of layers of complexity
>>>will improve the situation.  For large, busy groups that
>>>need to save time, the best technique is to load all
>>>of the presentation materials onto one laptop, thus
>>>avoiding the need to switch connections.
>>>In the five years that we have been buying projectors,
>>>I have learned that "bells and whistles" like cameras
>>>are pretty much useless. I would put a wireless interface
>>>into the same category. It's just one more thing that
>>>can break, requiring a potentially costly repair, and
>>>taking a projector out of service.
>>>Let's please stick with simple, durable, bright,
>>>high-resolution DLP projectors with minimal bells and whistles.
>>>Howard (Yes, I'm a Luddite, and proud of it) Frazier
>>>Rigsbee, Everett O wrote:
>>>>  FYI-  I just happened to stumble across the Epson 735c Wireless LCD
>>>Projector (see attached specification sheet) and thought this might just
>>>be the thing for our future meetings, but wondered if anyone has had any
>>>experience with this unit, and has opinions on its suitability for use
>>>at IEEE 802 plenaries and interims.
>>>>  It seems to be price competitive with the regular wired units, and
>>>might allow a lot more flexibility in sharing an LCD projector amongst
>>>several presenters.
>>>>  Input and opinions on this notion are encouraged.
>>>>  I'm working on seeing if we can get a couple of these units to use in
>>>SF for evaluation purposes.  Any support for this from our Epson folks
>>>would be seriously appreciated.   :-)
>>>>  Thanx,  Buzz
>>>>  Dr. Everett O. (Buzz) Rigsbee
>>>>  Boeing - SSG
>>>>  PO Box 3707, M/S: 7M-FM
>>>>  Seattle, WA  98124-2207
>>>>  (425) 865-2443    Fx: (425) 865-6721