Generating fingerprinted content data for provision to receivers
US10355867B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2012 |
| Grant date | Jul 16, 2019 |
| Priority date | — |
| Expiry date | Feb 12, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/608
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for generating, from initial content data, output content data for provision to one or more receivers, wherein the initial content data is encoded according to a coding scheme, wherein for a quantity of data encoded according to the coding scheme, the coding scheme provides a mechanism for including in the quantity of encoded data additional data such that a decoder for the coding scheme, upon decoding the quantity of encoded data, does not use the additional data to generate decoded data, the method comprising: selecting one or more portions of the initial content data; for each selected portion, generating a data construct that comprises a plurality of data structures, each data structure comprising data, including a version of the selected portion, that is encrypted using a corresponding encryption process different from each encryption process used to encrypt data in the other data structures, wherein the data construct is arranged such that using a decryption process that corresponds to the encryption process for one data structure on the encrypted data in each data structure in the data construct produces a quantity of data encoded according to the coding scheme that…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.