Sylvain Munaut wrote: >I've find many doc about this chip. But it's made by divio and this >company seems very proud of their compression format jpeg-lite so there >are chances that this format is used for their webcam too. >
I'm 90% certain that they use jpeg-lite with this chipset. Here's some documentation on the compression: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=/netahtml/search-bool.html&r=1&f=G&l=50&co1=AND&d=ft00&s1=divio.ASNM.&OS=AN/divio&RS=AN/divio That's right, they patented JPEG with 4x4 blocks instead of 8x8. Hardly innovative. Now I know why the OV518 camera's compression that I reverse engineered uses 8x4 blocks. :-) Fortunately, it looks like all of the claims involve compression and not decompression, so you can probably implement a decompressor without being sued (you should ask a patent attorney to be sure, though). -- Mark McClelland [EMAIL PROTECTED] _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
