USB camera to AV signal

levettp · Joined: 07 Sep 2003 Posts: 17

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?

Ttelmah · Joined: 11 Mar 2010 Posts: 19359

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

levettp · Joined: 07 Sep 2003 Posts: 17

temtronic · Posted: Sun Oct 02, 2011 11:11 am

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.

Ttelmah · Joined: 11 Mar 2010 Posts: 19359

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

levettp · Joined: 07 Sep 2003 Posts: 17

Thanks for the advice

levettp · Joined: 07 Sep 2003 Posts: 17

Just some feedback that might help someone. This is quite a nifty product that is available:

http://www.gowiththeshark.com/RCV230_RC_aerial_video_wireless_camera_vision_system_headset.html