Appeal 2007-2921
Application 09/951,452
as multilayered bitstreams where the most significant bit (MSB) represents
the base layer while the least significant bits (LSBs) represent the
enhancement layers. (Col. 8, l. 65- col. 9, l. 11.)
6. Park discloses a bit packing portion (240) for sequentially
encoding the quantized values from MSBs to LSBs. Particularly, the bit
packing portion codes the side information corresponding to the base layer
and the enhancement layers resulting from the quantization. (Col. 6, ll. 1-
20.)
7. As depicted in Figure 14, Park discloses that, in the prior art, an
original signal is sampled and filtered to produce digital signal bands that are
encoded. The encoded signals are fed to a bitstream multiplexer. They are
also decoded, inverse filtered and up-sampled to re-construct the original
signal. The reconstructed signal is compared to the original signal in an
adder to generate an error. The error is subsequently encoded before it is
recombined with the encoded signal data in the bitstream multiplexer. (Col.
2, ll. 60-67.)
becomes smaller than the masking threshold.” (Col. 5, ll. 54-56.) (Emphasis
added.)
4 The Examiner notes in passing that the teachings of the prior art alone, in
Figure 1 of Park, anticipate the invention, as claimed. (Answer 6.) We
agree.
5
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