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Optical Storage of Data on a Magnetic Medium Disclosure Number: IPCOM000054052D
Original Publication Date: 1980-Dec-01
Included in the Prior Art Database: 2005-Feb-13

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Laming, FP Mueller, H [+details]


It is sometimes advantageous to locate small optically readable spots between the usual magnetic data tracks of a magnetic recording medium. For example, the optical tracks can carry tracking information that is read optically and used for controlling the operation of locating a read head at a position that is to be read magnetically. The spots are less than one micron in diameter and can be conveniently located on the magnetic medium.