Apparatus, method, and computer program for processing information and recording medium storing computer program
US8494157B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2007 |
| Grant date | Jul 23, 2013 |
| Priority date | — |
| Expiry date | Aug 15, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2005/91364
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An information processing apparatus for reproducing content recorded on an information recording medium, includes a recording medium controller for reading data recorded on the information recording medium, and a data processor for acquiring from a unit key file recorded on the information recording medium a unit key corresponding to a content management unit set as a usage control unit of content, and decrypting encrypted content recorded on the information recording medium using the acquired unit key. The data processor determines an application type of the encrypted content recorded on the information recording medium, and acquires the unit key and decrypting the encrypted content in accordance with a process sequence corresponding to the application type.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.