Recorder for recording copy of production on the basis of copy attribute embedded as electronic watermark in the production, reproducing device for reproducing recorded copy, recorded medium, recording method, and reproducing method
US6937553B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2000 |
| Grant date | Aug 30, 2005 |
| Priority date | — |
| Expiry date | Feb 23, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2005/91335
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A recording apparatus for recording a duplicate of a product onto a recording medium, the product being a copyrighted digital product having a copy attribute embedded as a watermark thereon and the recording apparatus including (a) an acquiring unit for acquiring the copy attribute embedded on the product, (b) a changing unit for changing the acquired copy attribute into a copy attribute showing no more copy when the acquired copy attribute shows one generation copy, (c) a reading unit for reading from the recording medium at least a part of medium ID information recorded on the recording medium in an unalterable state, and (d) a recording unit for recording onto the recording medium the duplicate having both the copy attribute showing no more copy and the read medium ID information embedded as a watermark thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.