Subject:
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Re: A Generic Idea
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Newsgroups:
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lugnet.robotics
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Date:
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Sun, 5 Jan 2003 02:28:14 GMT
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Viewed:
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862 times
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"Steve Baker" <lego-robotics@crynwr.com> wrote in message
news:3E171F4A.4000502@airmail.net...
> Henrik Erlandsson wrote:
> > The Vision Command camera was great - until you discovered it had a cord • :)
> > and thereby understood that Lego *faked* the robot in robotics • inventions
> > commercial...)
> >
> > This is my very first post and so I don't know if this idea is new, but • I'm
> > suggesting that until Lego understand they have to release an • IR-connected
> > camera, that you can
>
> It's even more than that really.
>
> Sending live video over IR really isn't feasible - there isn't anywhere
> near enough bandwidth to do that. What you *REALLY* want is to have • enough
> on-board CPU power in the robot to process the images locally - but that • would
> require a much faster CPU than the one in the RCX.
>
> Failing that, you need a radio link to send data back to the PC for • processing.
>
> The problem with that (from Lego Inc's perspective) is that Radio is • legally
> regulated - and those regulations vary dramatically from country to • country.
> They'd have to make half a dozen different sets of electronics operating • at
> different frequencies - and then get them through each of the various
> certification processes. It's a lot of hassle for them.
>
> So, they are rather stuck. IR won't work, they don't want to redesign the
> RCX and they don't want to use radio.
Ok, if radio built into the RCX is out of the question, what about the
RC-modells? They have a Radio link? One way only, but that could be changed
by using two transmitters and two receivers...
You can use that frequency to transmitt some codes, even if the bandwith is
low?
Probably to low for an color hig res picture, but what about a lowres b/w
picture. And only with low framerate?
> > 3) The same would of course be true for the phone types which have the
> > ability to take, send and receive pictures.
Here in Norway they probably will try out the new type of mobile
comunication this year (UMTS I think it was). It is were you in the future
(when the mobile telephone company can make one...) can send live video
streams with sound trough the air using only a small phone on the size of an
big GSM phone today. They have been testing it for one or two years now, and
the first radio-link towers are activated now for use in Rescue Helicopters,
were the doctors have one camera like this and can send a live video feed to
the hospital. With even more equipment attached to this he can also sends
some other vital data from the site, like heart rate and so on.
This equpment will probably be very expensive in the first years, but with
more consumer asking for more bandwith and if the companys can make good
phones that people would use, this is not TOO far in the future.
And THEN you can attach the RCX to this and sendt both picture from the
camera and data to and from the RCX to another site.
<snip>
So all we can conlude with todays equipment is that you need more CPU power
to handle the data from a camera?
Can a palm do this? Or other smallsize computers that exist today? Does
anyone know of such a device?
My thinking was to use a usb camera and the usb tower connected to this
"robot brain" to controll the RCX from inside the same robot.
And some of these palm-size computers probably have built in (or can be
connected to) GSM, so there should be no problem sending the result of an
spy mission back to base and sending back information about what to do next.
Was that a stupid idea?
Regards
Øyvind Steinnes
http://www.brickshelf.com/cgi-bin/gallery.cgi?m=Phoenix
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Message has 2 Replies:
 | | Re: A Generic Idea
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| (...) The problem is that the 27MHz frequencies are fairly tightly restricted in some countries. Here in the US, it's pretty much open-season, it's used by CB radios, radio controlled models - and various toys. However, in other countries (the UK (...) (22 years ago, 5-Jan-03, to lugnet.robotics)
| | | Re: A Generic Idea
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| (...) "All ideas are stupid until someone proves they work." :D No, I've been thinking the same thing. (So it can't be stupid haha). A PDA with built-in webcam (and mike) + hotwiring an RCX input to a serial port on the PDA would probably be the (...) (22 years ago, 5-Jan-03, to lugnet.robotics)
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Message is in Reply To:
| | Re: A Generic Idea
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| (...) It's even more than that really. Sending live video over IR really isn't feasible - there isn't anywhere near enough bandwidth to do that. What you *REALLY* want is to have enough on-board CPU power in the robot to process the images locally - (...) (22 years ago, 4-Jan-03, to lugnet.robotics)
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