198322 ⎘
Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups - or by different subgroups of group ; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording and a beam of light for reproducing, e.g. light-induced thermomagnetic recording, Kerr effect reproducing characterised by the transducing operation to be executed Bulk initialisation or erasing, e.g. at least one whole information track with a single action
Indicator for Confirming Data Erasure, Box for Use in Processing Recording Media, and Method for Erasing Data
#2Preheat bulk erasing device for phase-change type optical disk
#3Magneto-optical recording apparatus having recovery processing unit
#4Optical disk apparatus and method for recording data by utilizing an overwrite technique or a two-path write technique
#5System and method for editing an audio stream