Appeal No. 95-3042
Application No. 08/098,501
searching of each of the logs to retrieve
information.
Each of the independent claims requires
...for each instruction that is executed,
recording in a main log pre-existing values
of any registers and memory locations that
are changed by said each instruction,
whereby said main log does not include said
current state.
As noted, supra, by the examiner and agreed with by
appellants and us, Padawer does not disclose this claimed feature.
The examiner relies on Balzer. However, our review of Balzer finds
us in agreement with appellants that while Balzer does, indeed, teach
the recording of values, it is only the recordation of "new values"
resulting from instruction execution that is taught by Balzer
[appellants point to the fifth line up from the bottom of the page on
page 577 of Balzer]. Balzer does not, in any way, teach or suggest
the "pre-existing values," or, accordingly, the recording of those
"pre-existing" values, as required by the instant claims.
As discussed at pages 2-4 of the instant specification,
Balzer suffered from the disadvantage that
[a]lthough flowback analysis permits the
programmer to view the values of named
program variables, it does not simulate past
program state, and therefore cannot recreate
values in heap-allocated memory...
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