Information recording and reproduction apparatus to be controlled by temporal information
US5930274A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1997 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Aug 27, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/885
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An information recording and reproduction apparatus for recording and reproducing the information supplied through the transmission line is capable of protecting the copyright by limiting the reproduction of the recorded information. A main information signal supplied through the transmission line and a deadline signal attached to the main information signal and representing the reproduction deadline of the main information signal are recorded and reproduced by a recording device and a reproduction device respectively. A temporal information signal representing the date and time is acquired. The deadline signal reproduced is compared with the temporal information signal acquired. The reproduction output of the main information signal is cut off in accordance with the comparison signal produced by the comparison. In the case where the temporal information has passed the deadline, the reproduction output of the main information signal is cut off.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.