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AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsYoshinari Takemura, Takashi Ishida, Shunji Ohara, Isao Satoh
Estimating the term…
The optical disk of this invention includes a read-only area in which a plurality of read-only tracks are formed and a rewritable area in which a plurality of rewritable tracks are formed, wherein each of the plurality of read-only tracks is divided into a plurality of first sectors, a signal is prerecorded in at least one of the plurality of first sectors under a predetermined reproduction format, each of the plurality of rewritable tracks is divided into a plurality of second sectors, a signal is recordable in at least one of the plurality of second sectors under a predetermined recording format including the predetermined reproduction format, and the read-only area is located on an inner portion of the optical disk, while the rewritable area is located on an outer portion of the optical disk.
An optical disk compatible with a read-only optical disk which includes a read-only area having a plurality of read-only tracks, each of the plurality of read-only tracks being divided into a plurality of first sectors, signals being prerecorded in at least one of the plurality of first sectors under a predetermined reproduction format, the optical disk comprising a read-only area in which a plurality of read-only tracks are formed an a rewritable area in which a plurality of rewritable tracks are formed,
Dependencies are inferred from the claim text.