Recording medium with overlapping segment information thereon and apparatus and methods for forming, recording, and reproducing the recording medium
AssigneeLG Electronics Inc.
InventorYong Cheol Park
Life of this patent
Estimating the term…
Abstract
A recording medium, such as a high-density and/or optical recording medium including segment information recorded thereon, and apparatus and methods for recording to and reproducing from the recording medium, in order to improve data protection, data management and/or reproduction compatibility. The recording medium may contain at least one segment area which is an area on the disc controlled by a plurality of valid PACs and if the designated segment areas overlap with one another, control information of the respective PACs which control the overlapped area may be applied to control the overlapped area.
Claims30
A recording medium having a data structure for managing a data area of a recording medium, comprising:
- at least one physical access control (PAC) cluster, the at least one PAC cluster including information for managing recording to and/or reproducing from the recording medium, each PAC cluster including segment information identifying at least one segment in a user data area, wherein segments of a same PAC cluster are not overlapped, wherein at least one PAC cluster is unknown to an apparatus attempting to record to or reproduce from the recording medium and the at least one unknown PAC cluster includes unknown PAC rules.
A method of controlling access to a recording medium, comprising:
- identifying a first and second physical access control (PAC) cluster, each including segment information identifying non-overlapping segments in a user data area of the recording medium, wherein at least one segment in a first PAC cluster overlaps with at least one segment of a second PAC cluster, wherein at least one of the first and the second PAC clusters is unknown to an apparatus attempting to record to or reproduce from the recording medium and the at least one unknown PAC cluster includes unknown PAC rules;
- and
- controlling access to overlap areas of the at least one segment in the first PAC cluster and the second PAC cluster depending on at least one overlap rule.
A method of recording on a recording medium, comprising:
- identifying a first and second physical access control (PAC) cluster, each including segment information identifying non-overlapping segments in a user data area of the recording medium, wherein at least one segment in the first PAC cluster overlaps with at least one segment of the second PAC cluster, wherein at least one of the first and the second PAC clusters is unknown to an apparatus attempting to record to or reproduce from the recording medium and the at least one unknown PAC cluster includes unknown PAC rules;
- and
- recording to overlap areas of the at least one segment in the first PAC cluster and the at least one segment of the second PAC cluster if both PAC cluster permit to record to the at least one segment.
A method of reproducing from a recording medium, comprising:
- identifying a first and second physical access control (PAC) cluster, each including segment information identifying non-overlapping segments in a user data area of the recording medium, wherein at least one segment in the first PAC cluster overlaps with at least one segment of the second PAC cluster, wherein at least one of the first and the second PAC clusters is unknown to an apparatus attempting to record to or reproduce from the recording medium and the at least one unknown PAC cluster includes unknown PAC rules;
- and
- reproducing from overlap areas of the at least one segment in the first PAC cluster and the at least one segment of the second PAC cluster if both PAC cluster permit to reproduce from the at least one segment.
An apparatus for recording to and/or reproducing from a recording medium having a data area, comprising:
- a controller for controlling recording or reproducing based on at least one physical access control (PAC) cluster including a first and second physical access control (PAC) cluster, wherein when at least one segment in the data area defined by the first PAC cluster overlaps with at least one segment in the data area defined by the second PAC cluster;
- recording to or reproducing from overlap areas is not permitted if recording to or reproducing from any one of the at least one segment of the first and second PAC cluster is not permitted, wherein at least one of the first and the second PAC cluster is unknown to the apparatus and the at least one unknown PAC cluster includes unknown PAC rules;
- and
- a pick-up for recording to or reproducing from the recording medium.
Dependencies are inferred from the claim text.