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- Lines: 69
Mon Feb 7 19:15:56 2000
- Orig file:
- Orig date:
Fri Jan 28 15:09:06 2000
diff -u --recursive --new-file v2.3.42/linux/Documentation/usb/ibmcam.txt linux/Documentation/usb/ibmcam.txt
@@ -23,11 +23,30 @@
IBM "C-It" camera, also known as "Xirlink PC Camera"
The device uses proprietary ASIC (and compression method);
-it is manufactured by Xirlink. See http://www.xirlink.com
+it is manufactured by Xirlink. See http://www.xirlink.com/
+or http://www.c-itnow.com/ for details and pictures.
+The Linux driver was developed with camera with following
+model number (or FCC ID): KSX-XVP510. This camera has three
+interfaces, each with one endpoint (control, iso, iso).
+It appears that Xirlink made some changes in their cameras recently.
+In particular, following models [FCC ID] are suspect; one with
+with FCC ID KSX-X9903 is known to be one of them:
+(see http://www.xirlink.com/ibmpccamera/ for updates, they refer
+to these new cameras by Windows driver dated 12-27-99, v3005 BETA)
+These cameras have two interfaces, one endpoint in each (iso, bulk).
+Attempts to remotely debug one of these cameras weren't successful.
+I'd need to have a camera to figure out how to use it.
WHAT YOU NEED:
-- An IBM C-it camera
+- A supported IBM PC (C-it) camera (see above)
- A Linux box with USB support (2.3/2.4 or 2.2 w/backport)
@@ -73,6 +92,7 @@
debug Integer 0-9  debug=1
flags Integer 0-0xFF  flags=0x0d
framerate Integer 0-6  framerate=1
+hue_correction Integer 0-255  hue_correction=115
init_brightness Integer 0-255  init_brightness=100
init_contrast Integer 0-255  init_contrast=200
init_color Integer 0-255  init_color=130
@@ -108,6 +128,16 @@
Beware - fast settings are very demanding and may not
work well with all video sizes. Be conservative.
+hue_correction This highly optional setting allows to adjust the
+ hue of the image in a way slightly different from
+ what usual "hue" control does. Both controls affect
+ YUV colorspace: regular "hue" control adjusts only
+ U component, and this "hue_correction" option similarly
+ adjusts only V component. However usually it is enough
+ to tweak only U or V to compensate for colored light or
+ color temperature; this option simply allows more
+ complicated correction when and if it is necessary.
init_brightness These settings specify _initial_ values which will be
init_contrast used to set up the camera. If your V4L application has
init_color its own controls to adjust the picture then these
@@ -143,8 +173,8 @@
WHAT NEEDS TO BE DONE:
-- The box freezes if working camera (with xawtv) is unplugged (OHCI).
- Workaround: don't do that :) End the V4L application first.
+- The box freezes if camera is unplugged after being used (OHCI).
+ Workaround: don't do that :)
- Some USB frames are lost on high frame rates, though they shouldn't
- ViCE compression (Xirlink proprietary) may improve frame rate
- On occasion camera does not start properly; xawtv reports errors.
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TCL-scripts by Sam Shen (who was at: firstname.lastname@example.org)