Appeal No. 97-0610
Application No. 08/346,689
Moriyama teaches that different error recovery procedures
should be used for different types of data. When the data is
computer programs, an error correcting coding method is chosen
so that error correction is acceptably high, and when the data
is audio signals, a nonoptimum coding method is chosen for
error correction (column 1, lines 39 through 53). At the
transmission side of Moriyama’s data transmission system, “an
optimum coding method on which a data group including
information data and a check word is based is selected in
accordance with the contents or type of the information
carried thereby, and a control code representing the thus-
selected coding method is inserted into a data signal” (column
1, line 64 through column 2, line 2). At the reception side
of Moriyama’s data transmission system,
the control code inserted in the data signal is
extracted so as to determine the coding method on
which the data group is based, and the data group is
subjected to error detection/correction processing
on the basis of the determined coding method to
thereby recover the original information from the
data group after error correction (column 2, lines 2
through 8).
A Reed-Solomon error correction circuit 75 is included in the
error detection/correction circuit 52 (Figure 7, column 4,
4
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