Information storage device, information processing system, information processing method, and program
US9767298B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2012 |
| Grant date | Sep 19, 2017 |
| Priority date | — |
| Expiry date | Feb 8, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2005/91364
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is provided a device and a method for preventing using of illegitimate content or manufacturing of the illegitimate media that uses illegitimate media. In a system that has an information storage device, a license management apparatus that generates a media key set (MKS) that is stored in the information storage device, and a content provision apparatus, at the time of manufacturing of the information storage device, the license management apparatus compares an MKS version that is set in the MKS that is stored in the information storage device, and an allowance minimum MKS version that is recorded in a controller of the information storage device, and thus records key information stored in the MKS, in a storage unit under the condition that it is confirmed that the MKS version is equal to or greater in value than the allowance minimum MKS version.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.