Content individualization
AssigneesSony Corporation, Sony Pictures Entertainment Inc.
InventorsYoshikazu Takashima, Christopher Taylor
Life of this patent
Estimating the term…
Abstract
Content individualization, including: encrypting a first part of a source data set using a first key creating a first encrypted data set; encrypting a second part of the source data set using a second key creating a second encrypted data set; encrypting the second part of the source data set using a third key creating a third encrypted data set; and combining the first encrypted data set, the second encrypted data set, and the third encrypted data set to form a final encrypted data set. Key words include watermarking and content individualization.
Claims5
A method of playing back individualized content on a playback device, comprising:
- reading a first part of an encrypted data set having first key information indicating a first key;
- decrypting the first part of the encrypted data set using a first playback key that is stored on the playback device and that matches the first key, creating first playback data;
- playing back the first playback data;
- reading a second part of an encrypted data set having second key information indicating a second key;
- reading a third part of an encrypted data set having third key information indicating a third key;
- selecting a second playback key that matches either the second key or the third key and that is stored on the playback device;
- decrypting the second part of the encrypted data using the second playback key when the second playback key matches the second key or decrypting the third part of the encrypted data using the second playback key when the second playback key matches the third key, creating second playback data;
- and
- playing back the second playback data.
Dependencies are inferred from the claim text.