Method and system for updating time information of a DRM device
US8595496B2 · kind B2 · utility
0Cited by
2References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2007 |
| Grant date | Nov 26, 2013 |
| Priority date | — |
| Expiry date | Dec 11, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/603
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system for updating time information of a digital rights management (DRM) includes a time server transmitting a time information message to a consumer electronics (CE) device, the CE device transmitting the time information message to a digital rights management DRM device when the CE device receives the time information message from the time server, and the DRM device updating a present time of the DRM device based on the time information message when the DRM device successfully performs authentication with respect to the time information message which has been transmitted from the CE device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.