Method for reading and writing a data storage medium comprising a material with a succession of zones having a first and second physical state respectively

摘要

The present invention relates to a method for reading an information medium (1) comprising a recording layer (14) with a succession of zones of material (14a, 14c) with respective distinct first and second physical states of the material. According to the invention the recording layer is scanned with means (100) for detecting electrical fields.