Receiving device, recording and reproducing device and receiving/recording-reproducing system for digital broadcast signal
US6674858B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1998 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Dec 10, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2005/91364
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A receiving device comprises a signal demodulator circuit for demodulating an encrypted video signal and attribute information including information for decoding an encryption, an attribute information identifying circuit for identifying and outputting the attribute information, and a descramble circuit for unscrambling the video signal obtained from the signal demodulator circuit, based on the output produced from the attribute information identifying circuit. A signal re-scrambled in accordance with a device ID signal is recorded in a recording and reproducing device. Further, the recording of the signal is controlled based on the output obtained from the attribute information identifying circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.