Ching, Philip Waisin:
US Patent 6560620 - Hierarchical document
comparison system and method;
/* Assignee: Aplix Research, Inc.
(Gaithersburg, MD) */;
Abstract: A hierarchical document comparison system comprises a
document server computer remotely accessible by a user computer.
The document server computer includes a database which stores the
contents of a first document and a second document. The first
document contains one or more segments and the second document
contains one or more segments. Each segment is identified by a
segment identifier. The document server computer also includes a
module executable in the document server computer. The module is
configured to receive a request to compare the first document and
the second document. The module compares the first document and
the second document and identifies the segments in the documents
containing differences. The module then displays on the user
computer a side-by-side display listing the segment identifiers
for the identified segments. The segment identifiers for the
identified segments in the first document containing differences
are displayed in a first list and the segment identifiers for the
identified segments in the second document containing differences
are displayed in a second list.