Information storage medium and electronic device using the same for authentication purposes
US5846131A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 30, 1995 |
| Grant date | Dec 8, 1998 |
| Priority date | — |
| Expiry date | Mar 30, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B23/284
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Security is ensured by judging agreement with a specific indication, such as a trademark, whose identity is socially recognizable to effectively expel counterfeits from the market. A game machine in which a CD-ROM 17 is mounted on a game machine 10 to play a game based on program information stored in the CD-ROM 17 comprises a recognition sensor 22 reading a trademark indication region 20 on the exterior surface of the CD-ROM 17, and a judging unit judging whether a specific trademark TM is displayed in a trademark indication region, the game based on the program information being prevented from starting, or if started stopped when the specific trademark TM is not displayed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.