Device, in particular a compact disc, comprising a data storage

Details Device, in particular a compact disc, comprising a data storage Device, in particular a compact disc, comprising a data storage

1997-04-10

1999-01-19

Edun, Muhammad N.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 53, 369124, G11B 700

Patent

active

058621172

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.

REFERENCES:
patent: 4562487 (1985-12-01), Hurst, Jr. et al.
patent: 4575770 (1986-03-01), Dieterich

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