System, apparatus and method for enabling/disabling display data channel access to enable/disable high-bandwidth digital content protection
US8713316B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2012 |
| Grant date | Apr 29, 2014 |
| Priority date | — |
| Expiry date | Jan 31, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0435
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A switcher device comprises a multiplexer coupled in-between at least one input and output cards. The multiplexer detects the presence of an event signal from an activated sink. In response to the detection of the event signal, the switch dynamically switches to a closed position in order to enable the at least one source to authenticate with the input card and the output card to authenticate with the at least one sink for security protocol encryption. In response to the non-detection of the event signal, the switch switches dynamically to an open position in order to disable the at least one source from authenticating with the input card, therefore the output card also does not attempt to authenticate with the at least one sink for security protocol encryption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.