Appeal No. 1997-2158 Page 3
Application No. 08/234,239
the check to the workstation. Under this arrangement,
validity checking software need only be stored on the server.
Updating of validity checking program files and data files,
moreover, need only be done to the server.
Claim 1, which is representative for our purposes,
follows:
Claim 1. A method for checking the validity of
an item of data stored for access by a first data
processor of a data processing network comprising at
least two interconnected data processors, the method
comprising the steps of:
storing for access by a second data processor a
plurality of definitions of forms of data indicative
of invalidity of items of data;
causing the first data processor to provide the
second data processor with a copy of the item of
data;
determining, using the second data processor,
whether any of the stored forms of data are present
in the item of data and declaring the item of data
invalid if any of the stored forms of data are
present in the item of data;
reporting to the first data processor on the
validity of the item of data; and
causing the first data processor to prevent
access to the item of data if the item of data is
declared as invalid.
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