Appeal No. 1999-2240
Application 08/909,349
the capacity of each recording layer (Br11). Because
program areas of respective layers coincide, sector
addresses at the same radial position can be converted by a
simple XOR operation (Br11).
The specification does not expressly state that one
half the amount of the data to be recorded, (the amount of
data that fits in the predetermined data area), is smaller
than the data area available for recording. However, the
description in the specification that the total amount of
data to be recorded is calculated and the pickup is turned
back and moved to a lower layer upon recording a half amount
of data (specification, p. 8, lines 7-13) implies that one
half the data does not completely fill a layer because it
does not describe recording to the end of the first layer.
Thus, we find that Appellants were in possession of
recording one half the data to be recorded to a
predetermined data area, "said predetermined data area being
smaller than said data area available for recording the
data." This limitation means that data is not recorded to
completely fill the first recording layer with the remainder
recorded on the next layer. It is, of course, possible in
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