Laserdiodenregelung bei wiederbeschreibbaren optischen Aufzeichnungsgeräten

摘要

The invention relates to an electronic device for optically recording onto rewritable media in which two different states are produced on the medium according to information content. According to the invention, the reflection of only one of the states is measured when writing the states, and the measurement for controlling the power of the laser diode is used also when writing the other state.