Method of videophone data transmission
US7116349B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2005 |
| Grant date | Oct 3, 2006 |
| Priority date | — |
| Expiry date | Apr 22, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/147
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of videophone data transmission based on the PKI (Public Key Infrastructure) is executed with a videophone and a user. The method includes the steps of performing a connection procedure, performing a data download procedure and performing a disconnection procedure. While performing the connection procedure, a smart key, which stores at least one piece of user identification data, is connected to a videophone. The user identification data contains an ID code, a password and a private key of the user. While performing the data download procedure, the user identification data is encrypted and transmitted to a service server for verifying the user. Then, at least one service provided by the service server is encrypted and downloaded to the videophone. After decryption, the at least one service can be executed in the videophone. While performing a disconnection procedure, the smart key is disconnected from the videophone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.