Method for managing recorded streams in a rewritable recording medium
First Claim
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1. A method for managing digital data, comprising the steps of:
- recording the digital data onto a recording medium, the digital data including a digital content; and
recording management information onto the recording medium to automatically delete the digital content after a predetermined time,wherein the management information includes indication information indicating whether or not the digital content is to be deleted after the predetermined time, andwherein the management information is recorded into a playlist referring to the digital content.
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Abstract
The present invention relates to a method for managing playlists of a rewritable recording medium in order to prevent unlimited playback or illegal edition of television broadcast programs or movies wherein copyright protection is required. The present invention operates by adding information needed for automatic timed deletion of consecutively recorded clips of A/V streams and deletion time information into the playlists of a recording medium such as a high density rewritable optical disc (BD-RW), whereby referring to the recorded information, the corresponding clips of A/V streams are automatically deleted.
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Citations
13 Claims
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1. A method for managing digital data, comprising the steps of:
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recording the digital data onto a recording medium, the digital data including a digital content; and recording management information onto the recording medium to automatically delete the digital content after a predetermined time, wherein the management information includes indication information indicating whether or not the digital content is to be deleted after the predetermined time, and wherein the management information is recorded into a playlist referring to the digital content. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for managing digital data, comprising the steps of:
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(a) checking management information associated with a timed deletion of the digital data, wherein the digital data includes a digital content recorded in a recording medium and wherein the management information includes indication information indicating whether or not the digital content is to be deleted after a predetermined time; and (b) determining whether or not to delete the digital content after the predetermined time based on a result of checking the management information, wherein the management information is recorded in a playlist, wherein the playlist refers to the digital content. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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Specification