Content delivery system, content delivery apparatus, content recording and reproduction apparatus and content recording and reproduction method, and computer program
US7904928B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2004 |
| Grant date | Mar 8, 2011 |
| Priority date | — |
| Expiry date | Dec 22, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H60/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to properly protecting broadcast contents stored on a receiver side from copying without permission and illegal use in server type broadcasting. According to the invention, contents are sent from a broadcast sending side in a state in which copyright information for the contents is added to the contents. On the other hand, on a receiving client side applicable to server type digital broadcasting, it is possible to perform appropriate control for reproduction of contents and recording reservation on the basis of copyright information for contents such as the number of times of reproduction of contents, restriction of display resolution at the time of reproduction of contents, and an expiration date of content reproduction. According to this copyright information, it is possible to perform detailed control for a display device incorporated in or connected to a receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.