| 摘要 |
PURPOSE:To enable high-density recording by continuously arraying plural pieces of reloadable hologram spots at intervals on an amorphous perpendicularly magnetized film. CONSTITUTION:Plural pieces of the reloadable hologram spots are arrayed in the spaced intervals on the amorphous perpendicularly magnetized film. Multiple recording at the same spot is executed with light of >=2 kinds of different wavelengths if the translucent type hologram is used by Faraday rotation for the recording medium. There is no need for searching the information from all bits at the time of searching the information from the medium if, for example, ICRT screens are recorded and reproduced by one spot each according to the method. Early retrieval is possible if signals for discrimination are previously put into one spot and one screen. Mis-registration is eliminated and exactly and early reading is possible if position discrimination signals are previously put into the hologram. The max. space resolving power of the reloadable magneto-optical recording film is small and, therefore, the high-density recording is possible. |
