Appeal No. 2004-2185
Application 08/855,245
layer and the first and second enhancement layer streams.
Because the base layer is stored as a separate stream from the
enhancement layer data, the system is able to admit more users
when fewer users choose to receive the enhancement layer data.
Column 7, lines 7-10. Additionally, it is indicated at column 7,
lines 27-30 that the server 20 may fetch a base signal frame
block from a disc 90 in Figure 1 and transmit the selected
sections over the network 30, 30'. Column 10 of Chaddha discuses
the ability of the system to scale the video as a side effect of
dropping less important packets in the discussion beginning at
column 10, line 18. The ability to drop undesired packets of
video information is further discussed at column 10 in a
multitask environment.
These portions of Chaddha indicate to us the selectability
of particular data streams, including the base level and the
plural enhancement levels, exists at least with the decoder along
with inferences at least that the encoder itself may be made
selective in its encoding operations. To substantiate this view,
the examiner begins to rely upon the discussion at column 11 at
the middle of this column. We would emphasize the importance of
that discussion through line 6 of column 13 to support our
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