Recording medium with copy protection information formed in intermittent or alternate wobbled pits and apparatus and methods for forming, recording, and reproducing the recording medium
AssigneeLG Electronics Inc.
InventorsSang Woon Suh, Jin Yong Kim
Life of this patent
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Abstract
A recording medium, such as a high-density and/or read-only recording medium, such as BD-ROM, which contains copy protection information encoded in intermittent or alternate wobbled pits, and to methods and apparatuses for forming, recording, and reproducing data on the recording medium.
Claims25
A non-transitory recording medium including control information required for recording or reproducing data on or from the recording medium and copy protection information, the copy protection information being key information for use in generating and/or processing copy-protected data, wherein the control information and the copy protection information are recorded separately, the copy protection information is repeated in data units including at least a first data unit and a second data unit, a format of the first data unit including the copy protection information is different from a format of the second data unit including the copy protection information, and at least one of the copy protection information of the first data unit and the copy protection information of the second data unit is formed as a wobbled pattern, wherein the first data unit is different from the second data unit with respect to a modulation method,
- wherein key information of the copy protection information in the first data unit is the same as key information of the copy protection information in the second data unit.
A method of recording or reproducing data on or from a recording medium, comprising:
- (a) utilizing control information required for recording or reproducing data on or from the recording medium, the step (a) further including utilizing copy protection information, the copy protection information being key information for use in generating and/or processing copy protected data, the copy protection information being recorded in an area of the recording medium separately from the control information;
- and
- (b) recording or reproducing the copy-protected data based on the copy protection information,
- wherein the copy protection information is repeated in data units including at least a first data unit and a second data unit, a format of the first data unit including the copy protection information is different from a format of the second data unit including the copy protection information, and at least one of the copy protection information of the first data unit and the copy protection information of the second data unit is formed as a wobbled pattern, wherein the first data unit is different from the second data unit with respect to a modulation method,
- wherein key information of the copy protection information in the first data unit is the same as key information of the copy protection information in the second data unit.
An apparatus for reproducing data from a recording medium, comprising:
- pick-up unit configured to read data from the recording medium, and a controller configured to control the pick-up unit to detect Control information and copy protection information recorded in an area of the recording medium separated from the control information, the control information being required for reproducing data on the recording medium, the copy protection information being key information for use in generating and/or processing copy protected data,
- wherein the controller is configured to control the pick-up unit to detect the copy protection information from at least one of data units, the copy protection information being repeated in data units including at least a first data unit and a second data unit, a format of the first data unit including the copy protection information being different from a format of the second data unit including the copy protection information, at least one of the copy protection information of the first data unit and the copy protection information of the second data unit being formed as a wobbled pattern, wherein the first data unit is different from the second data unit with respect to a modulation method,
- wherein key information of the copy protection information in the first data unit is the same as key information of the copy protection information in the second data unit.
An apparatus for recording data on a recording medium, comprising:
- a pick-up unit configured to read data from and record data on the recording medium;
- and
- a controller configured to utilize control information required for recording or reproducing data on or from the recording medium and copy protection information being key information for use in generating and/or processing copy protected data and to control the pick-up unit to record the copy protected data based on the copy protection information and the control information,
- wherein the copy protection information is recorded in an area of the recording medium separated from the control information, the copy protection information is repeated in data units including at least a first data unit and a second data unit, a format of the first data unit including the copy protection information being different from a format of the second data unit including the copy protection information, and at least one of the copy protection information of the first data unit and the copy protection information of the second data unit is formed as a wobbled pattern, wherein the first data unit is different from the second data unit with respect to a modulation method,
- wherein key information of the copy protection information in the first data unit is the same as key information of the copy protection information in the second data unit.
Dependencies are inferred from the claim text.