Device, in particular a compact disc, comprising a data storage medium and an integrated circuit
US5862117A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1997 |
| Grant date | Jan 19, 1999 |
| Priority date | — |
| Expiry date | Apr 10, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/00876
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The compact disk comprise a data storage medium (2) for optical reading situated in an annular region (4), which defines a central region (6) wherein is arranged an electronic module, formed of an electronic unit (12), in particular an integrated circuit, and an antenna formed by a winding (14), made of an electrically conductive material. The electronic module allows contactless electromagnetic coupling with an electromagnetic wave transmitter-receiver able to communicate with said electronic unit. In particular, this electronic unit comprises an identification code and/or a decoding key for the data contained in said storage medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.