Communication systems and methods for digital content modification and protection
US7996899B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2006 |
| Grant date | Aug 9, 2011 |
| Priority date | — |
| Expiry date | Jun 13, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A communication system comprises a content provider system configured to receive a content request indicating content and a device identifier, determine a first key based on the device identifier, process the content using the first key to modify the content from an unprotected state to a protected state, and transfer the content in the protected state. The communication system further comprises an end user system configured to receive the content in the protected state and process the content with a second key to modify the content from the protected state to an unprotected state wherein the second key is internally hard coded to the end user system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.