Optical disc and physical address format
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsAtsushi Nakamura, Junichi Minamino, Shigeru Furumiya, Mamoru Shoji, Takashi Ishida, Hiromichi Ishibashi
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Abstract
An optical disc medium comprises a track groove, along which main information is recorded. The track groove is divided into a plurality of blocks. The plurality of blocks each include a plurality of frames. The plurality of frames each include one shape of wobbles indicating sub information, among a plurality of prescribed shapes of wobbles. The plurality of blocks each have address information. The address information is represented by a string of at least one piece of sub information represented by the shape of wobbles of at least one of the plurality of frames.
Claims9
An optical disc medium, comprising a recording/reproduction area and a disc management area, wherein:
- the recording/reproduction area includes a first track groove,
- the disc management area includes a second track groove provided in at least one of an inner area and an outer area of the optical disc medium,
- the second track groove includes a plurality of prescribed shapes of wobbles indicating sub information, and
- management information of the optical disc medium is represented by a combination of the plurality of prescribed shapes of wobbles.
A reproduction apparatus for reproducing information recorded on an optical disc medium, wherein the optical disc medium includes a recording/reproduction area and a disc management area, wherein:
- the recording/reproduction area includes a first track groove, the disc management area includes a second track groove provided in at least one of an inner area and an outer area of the optical disc medium, the second track groove includes a plurality of prescribed shapes of wobbles indicating sub information, and management information of the optical disc medium is represented by a combination of the plurality of prescribed shape of wobbles,
- the reproduction apparatus comprising:
- a reading section for reading information from the first track groove of the optical disc to generate a reproduction signal;
- and
- a sub information signal generating section for generating a sub information signal indicating the sub information based on the reproduction signal.
A reproduction method for reproducing information recorded on an optical disc medium, wherein the optical disc medium includes a recording/reproduction area and a disc management area, wherein:
- the recording/reproduction area includes a first track groove, the disc management area includes a second track groove provided in at least one of an inner area and an outer area of the optical disc medium, the second track groove includes a plurality of prescribed shapes of wobbles indicating sub information, and management information of the optical disc medium is represented by a combination of the plurality of prescribed shapes of wobbles,
- the reproduction method comprising:
- reading information from the first track groove of the optical disc to generate a reproduction signal;
- and
- generating a sub information signal indicating the sub information based on the reproduction signal.
A recording apparatus for recording information on an optical disc medium, wherein the optical disc medium includes a recording/reproduction area and a disc management area, wherein:
- the recording/reproduction area includes a first track groove, the disc management area includes a second track groove provided in at least one of an inner area and an outer area of the optical disc medium, the second track groove includes a plurality of prescribed shapes of wobbles indicating sub information, and management information of the optical disc medium is represented by a combination of the plurality of prescribed shapes of wobbles,
- the recording apparatus comprising:
- a reading section for reading information from the first track groove of the optical disc to generate a reproduction signal;
- a sub information signal generating section for generating a plurality of sub information signals indicating the sub information based on the reproduction signal;
- a management information signal generating section for generating a management information signal indicating the management information based on at least one of the plurality of sub information signals;
- and
- a recording section for recording information on the optical disc in accordance with the management information signal.
A recording method for recording information on an optical disc medium, wherein the optical disc medium includes a recording/reproduction area and a disc management area, wherein:
- the recording/reproduction area includes a first track groove, the disc management area includes a second track groove provided in at least one of an inner area and an outer area of the optical disc medium, the second track groove includes a plurality of prescribed shapes of wobbles indicating sub information, and management information of the optical disc medium is represented by a combination of the plurality of prescribed shapes of wobbles,
- the recording method comprising:
- reading information from the first track groove of the optical disc to generate a reproduction signal;
- generating a plurality of sub information signals indicating the sub information based on the reproduction signal;
- generating a management information signal indicating the management information based on at least one of the plurality of sub information signals;
- and
- recording information on the optical disc in accordance with the management information signal.
Dependencies are inferred from the claim text.