06-30-2015 02:17 AM
Hi guys,I'm developing a DVI grayscale video capture and outputting the stream of video serialized via USB. Since the normal USB won't handle data transmission at 800x600 resolution, ​139 MHz clock (60 FPS) and using 1 pixel (24 bits) per clock, I was thinking about implementing a UVC (USB Video Class) with NiosII. Is there any resources for implementing an UVC on NiosII? Any example or an Altera IP Core? Also, am i in the right track with the UVC idea? Is there an easier/faster way? Thanks for the help. EDIT: Forgot to say that i'm using a DE2-115 board. I'll input the DVI pins into the GPIO pins. EDIT2: Can also use Ethernet as the interface to stream the video to the PC.
06-30-2015 04:14 AM
Hi,One of Altera's megafunction partner has something which is of your interest. Please visit following: http://www.slscorp.com/index.php. ( In that, look into "Image Acquisition using USB3.0 IP core" ). Hope this would help. Cheers, Bhaumik
06-30-2015 10:49 PM
--- Quote Start --- Hi, One of Altera's megafunction partner has something which is of your interest. Please visit following: http://www.slscorp.com/index.php. ( In that, look into "Image Acquisition using USB3.0 IP core" ). Hope this would help. Cheers, Bhaumik --- Quote End --- Unfortunatelly i can't use USB 3.0, USB 2.0 is way more common around here. I'll try to cram the data using compression. I've taken a turn away from UVC, since i only need to output the pixel values to the USB, i'm thinking about designing a USB bulk endpoint, but i don't know if the Cypress EZ-OTG on the DE2-115 can handle it. Could anyone point me to some reference design? As for compression, opencores has a JPEG encoder that might suite my needs (http://opencores.org/project,mkjpeg) and i'll stick with it for now. I'll focus on building the USB application for now.