Appeal No. 2002-2327
Application No. 09/142,549
conventional MPEG encoding in which a copy protection bit is used
for authentication purposes, Appellants’ invention involves the
purposeful generation of a sequence of intraframe (I),
predictively (P), and bidirectionally (B) coded pictures in a
group of pictures (GOP). For example, a BPP pattern, rarely used
in a GOP structure, is used to represent watermark data in a
digital signal encoded in MPEG format.
Claim 1 is illustrative of the invention and reads as
follows:
1. A method of embedding supplemental data in a
video signal comprising the step:
encoding the video signal in groups of pictures
comprising an intraframe (I) coded picture and a series of
predictively (P) and bidirectionally predictively (B) coded
pictures, characterized in that said method further
comprises the step:
further encoding the video signal in such a
manner that the pattern of picture coding types (I, P, B) in
a group of pictures represents a supplemental data value.
The Examiner relies on the following prior art:
Iu 5,293,229 Mar. 08, 1994
Girod et al. (Girod) 5,809,139 Sep. 15, 1998
(filed Sep. 13, 1996)
Claim 1-11, all of the appealed claims, stand finally
rejected under 35 U.S.C. § 103(a) as being unpatentable over Iu
in view of Girod.
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