Appeal No. 2001-0575
Application 08/924,867
an authentication server for maintaining and storing pairs of hashes and identifiers, and
for providing hashes in encrypted form in response to requests from display stations, wherein the
requests include identifiers;
the acquisition computers being configured for pre-processing the image datasets,
including performing any required image compression, encrypting at least a portion of the image
datasets after any such compression, forming identifiers, computing hashes, providing pairs of
hashes and identifiers to the authentication server, and sending pre-processed image datasets to
the image archive server for storage in the image data store; and
the display stations being configured for requesting and receiving identified pre-processed
image datasets from the image archive server, decrypting the image datasets sent by the image
archive server, performing any required data decompression on the image datasets, forming
identifiers from the image datasets, computing hashes from the image datasets, sending requests
including the formed identifiers to the authentication server, receiving identified hashes in
encrypted form from the authentication server, decrypting hashes received from the
authentication server, and comparing the hashes obtained from the authentication server with the
hashes computed locally from the image datasets received from the image archive server.
The examiner relies on the following references:
Fisher et al. (Fisher) 4,833,625 May 23, 1989
Dyson 5,050,212 Sep. 17, 1991
Haber et al. (Haber) 5,136,647 Aug. 4, 1992
Conner et al. (Conner) 5,579,393 Nov. 26, 1996
Claims 1-3, 5-9, 11-15 and 17-21 stand rejected under 35 U.S.C. § 103. As evidence of
obviousness, the examiner cites Fisher and Dyson with regard to claims 1 and 21, adding Haber
with regard to claims 2, 3, 5 and 6, and further adding Conner with regard to claims 7-9, 11-15
and 17-20.
Reference is made to the brief and answer for the respective positions of appellants and
the examiner.
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