Appeal No. 1996-4091
Application 08/167,394
from the specification and Appellants' arguments that HD
macroblock information comprises motion vectors. See page 4
of Appellants' brief and page 3 of the specification.
Turning to Ng, we find that Ng discloses a system shown
in Figure 4 which converts directly HDTV compressed digital video
signals into a second digital television signal. In particular,
in column 5, lines 38 through 59, Ng discloses that motion
vectors are directly converted to the second macroblock
information, SD macroblock information. Thus, Ng teaches
deriving SD macroblock information for said co-sited macroblock
directly from said HD macroblock information so as to form a
second digital television signal as claimed by Appellants.
Therefore, we find that Ng does teach a method which enables
direct conversion of HD macroblock information into SD macroblock
information.
We answered all of Appellants' arguments. Appellants
have chosen not to argue any of the other specific limitations of
claim 1 as a basis for patentability. We are not required to
raise and/or consider such issues. As stated by our reviewing
court in In re Baxter Travenol Labs., 952 F.2d 388, 391,
21 USPQ2d 1281, 1285 (Fed. Cir. 1991), "[i]t is not the function
of this court to examine the claims in greater detail than argued
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