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levettp
Joined: 07 Sep 2003 Posts: 17
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USB camera to AV signal |
Posted: Sun Oct 02, 2011 1:16 am |
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I have a USB microscope and a set of these new virtual screen glasses. The microscope runs with the standard Windows drivers and the virtual screen has an AV input.
After a lengthy search I could not find any standard device that I can plug the USB microscope into that has an AV video output (other than a PC that will not be practical for my application). My application is to use the microscope outdoors hence the use of video glasses so that I can work in direct sunlight.
What I want to do is basically the opposite to the readily available AV to USB video capturing devices.
Does anyone have experience with PIC code to directly read a USB camera signal and convert it to AV video signal? |
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Ttelmah
Joined: 11 Mar 2010 Posts: 19359
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Posted: Sun Oct 02, 2011 3:04 am |
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99% of PIC's can't do this.
If fact I doubt if any can.
The USB device needs to connect to a USB _host_. There are a few PIC's with this ability the USB 'OTG' devices. However the device then needs to have the code and _hardware_ to generate an AV output. This might be added to such a PIC, but will cost an enormous amount in development - both of hardware, and the code to do it. I'd reckon on something in the order of 1000 man hours.
Now, you rule out a PC, but 'think again'. Look at matchbox PC's running an embedded Linux core.
Best Wishes |
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levettp
Joined: 07 Sep 2003 Posts: 17
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Posted: Sun Oct 02, 2011 9:00 am |
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Ttelmah wrote: | 99% of PIC's can't do this.
If fact I doubt if any can.
The USB device needs to connect to a USB _host_. There are a few PIC's with this ability the USB 'OTG' devices. However the device then needs to have the code and _hardware_ to generate an AV output. This might be added to such a PIC, but will cost an enormous amount in development - both of hardware, and the code to do it. I'd reckon on something in the order of 1000 man hours.
Now, you rule out a PC, but 'think again'. Look at matchbox PC's running an embedded Linux core.
Best Wishes |
I've got a FIT-2 PC. But then again HDMI to AV is the problem. This complicates the system with the aditional converter but is at least possible with off the shelf hardware. |
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temtronic
Joined: 01 Jul 2010 Posts: 9170 Location: Greensville,Ontario
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Posted: Sun Oct 02, 2011 11:11 am |
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You don't say what the virtual eyeglasses need( AV input ??) but it's hard to believe that a $200 netbook/laptop/portable...whatever they call them this week can't work for you.
With over 1 billion wireless devices being made this year(2 billion in 2012) wait a week and someone will have a wireless solution for you ,really, there is a ton of new stuff every week ! I've found that the better you describe to Google what you want, it'll find it. |
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Ttelmah
Joined: 11 Mar 2010 Posts: 19359
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Posted: Sun Oct 02, 2011 3:15 pm |
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The Fit2PC, though quite small, is not really designed with a lot of connectivity. There are a lot of smaller PC's, and some offer AV out.
OTT (has lot of features you probably wouldn't need), but try a search for PPC-001-2BK This is a little unit sized like a mobile phone, with 4" touch screen, and AV in/out. Units like the Cappuchino, also offer an AV port. A search should find one.
Best Wishes |
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levettp
Joined: 07 Sep 2003 Posts: 17
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Posted: Mon Oct 03, 2011 5:00 am |
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Thanks for the advice |
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levettp
Joined: 07 Sep 2003 Posts: 17
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