Arrangement for independently requesting a playing authorization for a reproduced encrypted information signal
US6308269A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 7, 1998 |
| Grant date | Oct 23, 2001 |
| Priority date | — |
| Expiry date | Jul 7, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8355
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An arrangement, for verifying a playing authorization for an encrypted information signal reproduced by a reproducing device and for supplying a decrypted information signal when a playing authorization is available, includes a verification device for verifying a playing authorization for a reproduced encrypted information signal, and a decryption circuit for decrypting a reproduced encrypted information signal when a playing authorization is available. The arrangement further includes an interrogation device for independently requesting a playing authorization. The interrogation device includes a communication circuit which, in the absence of a playing authorization for a reproduced encrypted information signal, sets up a data link and supplies playing authorization request information to a playing authorization allocation device via the data link, and receives a playing authorization for the reproduced encrypted information signal from the playing authorization allocation device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.