Appeal No. 2003-2038
Application 09/288,833
buffering delays without sacrificing the benefits of using a
large receive buffer. See page 2 of Appellant’s specification.
Figure 1 shows an illustrative embodiment of
Appellants’ invention. In particular, the figure shows a program
source which is encoded by both source coder 11 and source coder
12 to produce two independent bit streams. See page 5 of
Appellants’ specification. The signal generated by source coder
12 is delayed prior to transmission by a conventional delay
element 14. The amount of delay which is applied is approxi-
mately equal to the difference in the delays which are to be
incurred by the receive buffers used at the receiver prior to
the decoding of the two data streams. Channel 16 represents a
communications channel adapted to transmission of packet-based
data streams such as the Internet. See page 6 of Appellants’
specification. The receiving end of channel 16 comprises two
receive buffers 17 and 18. Receive buffer 17 has an associated
buffer delay of n1 and receive buffer 18 has an associated buffer
delay of n2. In accordance with the principles of the invention,
n1 is greater than n2. Receive buffer 17 and receive buffer 18
are used to provide input to decoder 21 and decoder 22,
3
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