Appeal No. 2004-1689
Application 09/912,132
The examiner states that "[a] careful review of figure 5, as
well as column 7 lines 1-54 clearly shows that item 52 produces
frames at a lower resolution by filtering the DCT's [sic, DCT
coefficients] produced by the VLD and uses the filtered data
which are analogous to residual error frames to do the motion
compensation just as is claimed" (EA6).
We agree with the examiner that Choi teaches the steps of
"producing residual error frames at a second lower resolution;
producing motion compensated frames at the second lower
resolution; combining the residual error frames with the motion
compensated frames to produce video frames." "Residual error
frames" are P and B frames. Choi discloses down-converting the
high-resolution high definition (HD) signal to a lower resolution
standard definition (SD) signal by horizontal and vertical down
sampling after performing motion compensation (MC) at the full
resolution (Fig. 2; col. 2, line 66, to col. 3, line 25). Choi
then discloses down sampling the HD signal to half size through
horizontal 1/2 down sampling, respectively scaling the motion
vectors according to the reduced size, and performing the motion
compensation with the scaled motion vectors (Figs. 3 and 4;
col. 3, lines 26-67, especially lines 59-67), which meets the
claim limitations. Figure 5 shows that all incoming frames are
horizontally down sampled by elements 52 and 54 to a lower
resolution and are motion compensated using scaled motion vectors
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