Appeal No. 1999-2240
Application 08/909,349
This is a decision on appeal under 35 U.S.C. § 134 from
the final rejection of claims 1, 3, 5, 7, 9, 12, 13, 15, 16,
18, 19, and 21.
We reverse.
BACKGROUND
The disclosed invention relates to a disk-shaped data
recording medium and a recording apparatus for recording
data on a disk-shaped data recording medium.
Claim 1 is reproduced below.
1. A disk-shaped data recording medium on which an
amount of data is to be recorded, comprising:
at least a first and a second recording layers;
a first recording direction from the inner side to
the outer side of said medium and a second recording
direction from the outer side to the inner side of said
medium being determined as directions for recording
data;
one of said first and second recording directions
being used as the recording direction of said first
recording layer;
the other of said first and second recording
directions being used as the recording direction of
said second recording layer;
each of said recording layers including a data
area in which data has a sector structure, and each
sector containing at least a layer number for
identifying said first recording layer and said second
recording layer; and
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