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US 7,733,756 B2Granted
Recording medium with optional information and apparatus and methods for forming, recording, reproducing and controlling reproduction of 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 includes an identification information, which can identify whether optional information, such as copy protection information, is needed or not for the playback of contents stored on the recording medium, and to methods and apparatuses for forming, recording, and reproducing data on the recording medium.
Claims21
A computer-readable storage medium, comprising:
- a data zone for main data;
- and
- a lead-in zone including an area where wobble pits in which control information is recorded are formed, the control information required to record or reproduce the main data,
- wherein second control information required to reproduce the control information or the main data is encoded along with a wobble pattern of the wobbled pits by a bi-phase modulation method in such a manner that bit 0 and bit 1 are determined respectively depending on a direction of a transition of the wobble pattern within a predetermined period.
1 more element
A method of reproducing data from a recording medium, comprising:
- reading control information required to record or reproduce main data from a lead-in zone, the control information being recorded in wobbled pits, while detecting second control information encoded along with a wobbled pattern of the wobbled pits by a bi-phase modulation in such a manner that that bit 0 and bit 1 are determined respectively depending on a direction of a transition of the wobble pattern within a predetermined period, the second control information being required to reproduce the control information or the main data;
- and
- decoding the control information using the detected second control information to reproduce the main data.
An apparatus for reproducing data from a recording medium, comprising:
- a signal detector configured to read control information required to record or reproduce main data from a lead-in zone, the control information being recorded in wobbled pits, wherein the signal detector is further configured to detect second control information encoded along with a wobbled pattern by a bi-phase modulation method in such a manner that bit 0 and bit 1 are determined respectively depending on a direction of a transition of the wobble pits within a predetermined period, the second control information being required to reproduce the control information or the main data;
- and
- a signal processor, coupled to the signal detector, to decode the control information using the detected second control information.
Dependencies are inferred from the claim text.