Method and apparatus for trick-mode support of audio/video/data streams with conditional access
AssigneeKoninklijke Philips Electronics N.V.
InventorsAlan P. Cavallerano, Richard Chi-Te Shen
Life of this patent
Estimating the term…
Abstract
A method for trick-mode play of an encrypted transport stream containing audio/video/data information comprising: extracting and decrypting data used as local metadata for programs in the encrypted transport stream; creating trick-mode pointers from the metadata; and storing the trick-mode pointers and the encrypted transport stream on a storage medium.
Claims25
A method for trick-mode play of an encrypted transport stream containing audio/video/data information comprising:
- extracting and decrypting data used as local metadata for programs in said encrypted transport stream;
- creating trick-mode pointers from said metadata;
- and
- storing said trick-mode pointers and said encrypted transport stream on a storage medium.
A method of creating an encrypted trick-mode transport stream containing audio/video/data information for delayed play comprising:
- decrypting an encrypted transport stream to create a decrypted transport stream;
- demuxing said decrypted transport stream to create at least a data stream;
- creating trick-mode pointers from said data stream;
- and
- inserting said trick-mode pointers into said encrypted transport stream.
A system for trick-mode play of audio/video/data information from an encrypted transport stream comprising:
- a transport stream decryptor for decrypting said encrypted transport stream into a decrypted transport stream;
- a transport stream demuxer for demuxing said decrypted transport stream into an audio stream, a video stream and a data stream;
- a metadata section for receiving said encrypted transport stream and for creating trick-mode pointers;
- and
- a storage medium for storing said trick-mode pointers and said encrypted transport stream.
A system for trick-mode play of audio/video/data information from an encrypted transport comprising:
- a first transport stream decryptor for decrypting said encrypted transport stream into a decrypted transport stream;
- a first transport stream demuxer for demuxing said decrypted transport stream into an audio stream, a video stream and a data stream;
- a metadata section, said metadata section comprising:
- a second transport stream decryptor for decrypting said encrypted transport stream into a decrypted transport stream;
- a second transport stream demuxer for demuxing said decrypted transport stream into an audio stream, a video stream and a data stream;
- and
- a metadata processor for creating trick-mode pointers;
- and
- a storage medium for storing said trick-mode pointers and said encrypted transport stream.
A system for trick-mode play of audio/video/data information from an encrypted transport stream comprising:
- a first transport stream decryptor for decrypting said encrypted transport stream into a decrypted transport stream;
- a first transport stream demuxer for demuxing said decrypted transport stream into an audio stream, a video stream and a data stream;
- a metadata section, said metadata section comprising:
- a second transport stream decryptor a first transport stream decryptor for decrypting said encrypted transport stream into a decrypted transport stream;
- a second transport stream demuxer for demuxing said decrypted transport stream into an audio stream, a video stream and a data stream;
- and
- a metadata processor for creating trick-mode pointers;
- delay means for creating a time-delayed encrypted transport stream;
- a storage medium;
- and
- control means for synchronized insertion of said trick-mode pointers into said time-delayed encrypted transport stream as said time-delayed encrypted transport stream is written to said storage medium.
Dependencies are inferred from the claim text.