Method of local conditional access for mobile equipment
US8737990B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 26, 2007 |
| Grant date | May 27, 2014 |
| Priority date | — |
| Expiry date | Oct 22, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2111
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for conditional access to a digital data stream encrypted with at least one control word and broadcasted to at least one mobile device, said transmitter also transmitting a control message stream containing control words and access conditions, said mobile device being connected to a mobile communication network via a mobile access point, comprises: receiving the control message stream by the mobile device; determining a location identifier for the said mobile device by either the identifier of the mobile access point or the identifier of the broadcasting network transmitter; verifying access conditions contained in the control message, said access conditions comprising a reception condition related to a mobile access point identifier and/or an identifier of one broadcasting network transmitter; comparing the determined identifier with the identifier(s) contained in the access conditions; and authorizing or blocking the access to said data stream depending on the result of the comparison.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.