aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation/DocBook/v4l/compat.xml
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/DocBook/v4l/compat.xml')
-rw-r--r--Documentation/DocBook/v4l/compat.xml5
1 files changed, 3 insertions, 2 deletions
diff --git a/Documentation/DocBook/v4l/compat.xml b/Documentation/DocBook/v4l/compat.xml
index b42b935913c..54447f0d078 100644
--- a/Documentation/DocBook/v4l/compat.xml
+++ b/Documentation/DocBook/v4l/compat.xml
@@ -1091,8 +1091,9 @@ signed 64-bit integer. Output devices should not send a buffer out
1091until the time in the timestamp field has arrived. I would like to 1091until the time in the timestamp field has arrived. I would like to
1092follow SGI's lead, and adopt a multimedia timestamping system like 1092follow SGI's lead, and adopt a multimedia timestamping system like
1093their UST (Unadjusted System Time). See 1093their UST (Unadjusted System Time). See
1094http://reality.sgi.com/cpirazzi_engr/lg/time/intro.html. [This link is 1094http://web.archive.org/web/*/http://reality.sgi.com
1095no longer valid.] UST uses timestamps that are 64-bit signed integers 1095/cpirazzi_engr/lg/time/intro.html.
1096UST uses timestamps that are 64-bit signed integers
1096(not struct timeval's) and given in nanosecond units. The UST clock 1097(not struct timeval's) and given in nanosecond units. The UST clock
1097starts at zero when the system is booted and runs continuously and 1098starts at zero when the system is booted and runs continuously and
1098uniformly. It takes a little over 292 years for UST to overflow. There 1099uniformly. It takes a little over 292 years for UST to overflow. There