Back to results
US 7,680,022 B2Granted
Recording medium with physical access control (PAC) cluster 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 having at least one control data area storing control data in a recording unit. The control data may be used for managing an access to the recording medium. The medium having at least one management area storing status information for the control data area, wherein an invalid recording unit in the control data area is skipped and next available recording unit is used.
Claims35
A recording medium, comprising:
- a user data area including a plurality of segment regions for storing user data;
- at least one control data area including a plurality of access control data regions for storing access control data, the access control data controlling an access to the segment regions in the recording medium and enlarging a reproduction compatibility of the recording medium, wherein a number of the segment regions to which the corresponding access control data applies, is limited to a predetermined value;
- and
- at least one management area for storing status information indicating status of each access control data region, the status information indicating at least whether the access control data region is defective or not,
- wherein a defective access control data region is skipped, and the access control data is recorded on a next normal access control data region.
2 more elements
A method of recording data/information on a recording medium, comprising:
- recording access control data on a plurality of access control data regions in at least one control data area, the access control data controlling an access to a plurality of segment regions of a user data area in the recording medium and enlarging a reproduction compatibility of the recording medium, wherein a defective access control data region is skipped, and the access control data is recorded on a next normal access control data region, and wherein a number of the segment regions to which the corresponding access control data applies, is limited a predetermined value;
- and
- recording status information for indicating status of each access control data region on at least one management area, the status information indicating at least whether the access control data region is defective or not.
A method of reproducing data from a recording medium, comprising:
- reading status information for indicating status of each access control data region from a management area, the status information indicating at least whether or not the access control data region is defective;
- and
- reading access control data from the access control data regions in at least one control data area based on the status information, the access control data controlling an access to a plurality of segment regions of a user data area in the recording medium and enlarging a reproduction compatibility of the recording medium, wherein the access control data is read from not a defective access control data region but a next normal access control data region, and wherein a number of the segment regions to which the corresponding access control data applies, is limited to a predetermined value.
An apparatus for recording/reproducing data on/from a recording medium, comprising:
- a pickup configured to record/reproduce the data on/from the recording medium;
- and
- a controller configured to control the pickup to record access control data on a plurality of access control data regions in at least one control data area, the access control data controlling an access to a plurality of segment regions of a user data area in the recording medium and enlarging a reproduction compatibility of the recording medium, and to record status information for indicating status of each access control data region on at least one management area, the status information indicating at least whether the access control data region is defective or not,
- wherein a defective access control data region is skipped, and the access control data is recorded on a next normal access control data region, and
- wherein a number of the segment regions to which the corresponding access control data applies, is limited to a predetermined value.
2 more elements
An apparatus for recording/reproducing data on/from a recording medium, comprising:
- a pickup configured to record/reproduce the data on/from the recording medium;
- and
- a controller configured to control the pickup to read status information from a management area and access control data from access control data regions in a control data area, and to access the recording medium based on the status information and the access control data,
- wherein the status information indicates at least whether or not each access control data region is defective, and the access control data controls an access to a plurality of segment regions of a user data area in the recording medium and enlarges a reproduction compatibility of the recording medium, and wherein the access control data is read from not a defective access control data region but a next normal access control data region, and wherein a number of the segment regions to which the corresponding access control data applies, is limited to a predetermined value.
1 more element
Dependencies are inferred from the claim text.