| 摘要 |
The apparatus for writing data (109) on a magneto-optic recording medium (100) provides simultaneous erasure of old data and writing of new data with one laser beam (110). This is accomplished by operating the laser (104) in the continuous power mode and reversing the magnetic field in synchronization with the data (109). This apparatus includes an annular or doughnut-shaped magnetic transducer (103) which provides a switchable, vertically oriented magnetic field that is applied to the magneto-optic recording medium (100) through the hole in the annular magnetic transducer (103) and is focused on the surface of the recording medium (100) to provide the heat necessary to render the recording medium (100) susceptible to magnetization. |
