Differences between version 14 and predecessor to the previous major change of OV519WebCam.
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| Newer page: | version 14 | Last edited on Thursday, June 16, 2005 3:48:56 pm | by IanMcDonald | Revert |
| Older page: | version 10 | Last edited on Saturday, February 26, 2005 5:41:51 am | by WigGi | Revert |
@@ -1,13 +1,13 @@
-The OV519 chip is used in some cheap webcams - for example, from [DSE] (product code XH5096) sold as "Internet Camera with Microphone", as well in the Sony EyeToy.
+The OV519 chip is used in some cheap webcams - for example, from [DSE] (product code XH5096) sold as "Internet Camera with Microphone", as well in the Sony ~
EyeToy.
This [USB] WebCam supports 640x480 resolution images at 15fps, and video at 25fps, according to the box.
!Linux Support
The 2.6 series LinuxKernel (as of 2.6.7 at least) come with support for webcams that use the similar OV511 chip, but not these [WebCam]s.
The 'lsusb' program shows:
- 05a9:8519 !
OmniVision Technologies, Inc.
+ 05a9:8519 ~
OmniVision Technologies, Inc.
However, there is a driver (licensed under the [GPL]) that you can download
from http://alpha.dyndns.org/ov511/download.html#ov51x - the module will be called ov51x. It should work with 2.2, 2,4 and 2.6 kernels.
@@ -19,11 +19,15 @@
Best bet (for now) is to get a camera with better linux support.
-You can also intent to
code the decompression in the kernel space! Take a look at the decompression for ov518: it is very very closed
to JPEG decompression.
+You can also code the decompression in the kernel space! Take a look at the decompression for ov518: it is very very close
to JPEG decompression.
But there are patents about JPEG decompression and that is why - as far as I understand - the module doesn't handle JPEG decompression in kernel space..
But an individual that coded it for himself (and his friends ;) ) would not have to fear those patents... and the ov519 would work anywhere no mater with what app!
-One such driver is now available for download from the following website: http://www.qbik
.ch
/usb
/devices/drivers.php
+One such driver is now available for download from the following website: http://www.rastageeks
.org
/ov51x-jpeg
/
-- The kernel maintainers would not allow something like jpeg decompression inside a kernel module... they will argue (correctly) that this is something that should be done in userspace.
+
+-- That is not totally correct. Web camera decompression is being done in kernel but the biggest obstacle has been (and why it keeps coming out of kernel) is that code was not clean room. Also note about patents is not correct - you can still be prosecuted as an individual - less likely but you still can. Having seen John's comment below it confirms my memory that the problem was people stealing code from Philips and not [JPEG] being the issue. IanMcDonald
+
+-- [JPEG] is not a patent-encumbered format, [AFAIK]. JohnMcPherson
