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Re: VGA PDA alternative

Tony,

Good idea.
Our SMPS generates 5v @ 1Amp for the USB HOST ports.
Then there's another switcher off that for the 3.3volt power for the
electronics.
We'll have over 3/4 amp available for USB devices or external devices from
the 5-volt supply.
We're tight on connector space, but not all pins are used on the VGA
connector.
Do any HMDs draw power from the DE-15 connector?

Another option is to change the power input connector to one with more pins
to support power-out.

We know at least one HMD maker was looking at a USB dongle for controlling
the display settings, and also for stealing power from the host.
That would work without extra ports, but not many devices will run from
that low a current level.

BTW: with a 12-volt input, this unit will operate at full speed drawing
less than 100 mA current.  So a typical 1800 mA-Hr battery pack would run
it for 18 hours.  Of course, USB input devices would reduce that a little,
and WiFi radio cards could reduce it a whole lot depending on the demands
of the WiFi card!

Brian

Tony Havelka wrote:
> 
> What about adding a power out port for a HMD or other display device?
> 
> -Tony
> 
> > -----Original Message-----
> > From: Brian Empey, P.Eng. [mailto:]
> > Sent: Wednesday, April 07, 2004 12:13 PM
> > To: 
> > Subject: Re: VGA PDA solutions
> >
> >
> > Jobe,
> >
> > We have a product in design that won't be officially released
> > for a couple of months. Its a computer that's about 2.5" x
> > 3.5" x 1" thick in an all-metal enclosure. Its running Linux
> > on a 32-bit ARM CPU. It has:
> > - VGA/SVGA out for a display
> > - power-jack for DC in (~8 to 35 volts ... it has a 95%
> > efficient switching power supply built in)
> > - 2 x USB hosts
> > - audio headset jack (2.5mm)
> > - MMC/SD memory card slot for mem expansion
> > - Compact FLASH slot for WiFi, GSM, etc. communications, or CF HD
> > - 32 megaByte DiskOnChip
> > Its based on our Medallion CPU modules, which have supported
> > USB & VGA for 2 years now with no problems!
> >
> >
> > Its designed so that if its clipped onto a belt, the card
> > slots are UP, and all the connectors are at the bottom for
> > better cable management.
> >
> > It will be marketed as a personal wireless terminal (you
> > could also velcro it to a desktop monitor, plug in an 802.11
> > card, add USB KBD & mouse, and Presto --- instant wireless
> > thin-client terminal ... good for call centers)
> >
> > But its supposed to be a secret.
> > However, we are looking for beta testers interested in units
> > priced near cost. So, if anyone is interested, you can let me
> > know.....
> >
> > BTW: The CPU on version I is only 60 MHz, so don't even
> > consider augmented reality on this one.  Its a great terminal
> > or data collection device. For AR you'd want at least 400
> > MHz, integrated camera interface, HW camera to display
> > support with ZOOM or Picture-in-picture, etc. ... sounds
> > vaguely like the specs for a future model, but I wouldn't
> > want to give away any company secrets! hehe
> >
> > Brian
> >
> > PS: If you are a SW developer, we have 10 GUIs available on
> > our platform. That's the topic of an upcoming press release.
> > Included is FrameBuffer, Micro-Windows, QtEmbedded,
> > X-Windows, GTK 1.2, GTK 2.0, FLTK, ..... And you can even run
> > the FLTK GUI Builder Tool "FLUID" natively on our CPU modules!
> >
> > ~~~~~~~~~~~~~~~~~~~~~~~~
> >   Brian Empey, P. Eng.
> >       President
> >
> > Technical Solutions Inc.
> > Unit #1 7157 Honeyman St
> > Delta BC Canada, V4G 1E2
> >      www.techsol.ca
> >
> > eMail: 
> > Tel: 604 946 TECH (8324)
> > Fax: 604 946 6445
> > ~~~~~~~~~~~~~~~~~~~~~~~~
> >

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