Appeal No. 1999-2051
Application No. 08/716,615
Coding difficulty factors (D ), as described at, for example, column 11, lines 54
K
through 60 of Gonzales, are passed to the Picture Bit Allocation subsystem 2 (Fig. 6) prior
to the coding of the picture. The Picture Bit Allocation subsystem determines how many
bits to allocate to a picture.
The column 17 section pointed out by the examiner also describes determination of
"m(r,c)," which refers to the coding mode that will be used for each megablock (MB) in a
picture. See Gonzales at col. 15, l. 39-42. According to column 17, lines 31 through 46 of
the reference, the coding mode is selected in view of the value of )(r,c), which is a "spatial
complexity measure" defined at column 16, lines 45 through 55 of Gonzales. For P-
pictures, the "spatial complexity measure" is compared with the value of the forward
interpolative motion compensation error ) (r,c); see id. at col. 16, l. 30-33.
mc,f
Instant claim 1, however, requires that the "variation value correction frame
determination means" determines that the quantization variation value of a frame should
be corrected "when the frame involves a large amount of motion and the quantization
variation value is positive in sign or when the frame involves a small amount of motion and
the quantization variation value is negative in sign" (emphasis added). As represented by
the information flow and boxes 2, 3, and 6 of instant Figure 1, two different conditions are
examined: (1) the amount of motion associated with a frame; and (2) the arithmetic sign of
the quantization variation value.
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