Appeal No. 1998-2466 Page 8
Application No. 08/508,747
With regard to Tysen, appellant acknowledges (brief, page
11) that Tysen utilizes a UTC time stamp. However, appellant
asserts (id.) that Tysen does not discuss the line of code
(col. 12, line 60) which makes reference to UTC, and provides
"no means or technique for checking whether the time of their
machine remains an accurate UTC time after it is once set."
Appellant acknowledges (brief, page 19) that the examiner
is correct that the time of the signature in Tysen is part of
the causal chain because it is contained in the certificate.
However, appellant asserts (id.) that in Tysen, time is not
verified or certified in any way. We observe that Tysen
additionally refers to UTC time (col. 12, lines 21 and 22)
with respect to the certificate validity "not before" and "not
after" set UTC times. However, Tysen is silent as to
verifying the accuracy of the time, and provides no
explanation of how the UTC time is obtained. From the
disclosure of Tysen of using UTC time, we agree with appellant
(brief, page 20) that the time referred to is the time stored
in the system computer when an operation is performed. We
consider the time of the system computer to be initially set
to UTC time, but find no teaching or suggestion that Tysen
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 Next
Last modified: November 3, 2007