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Pisma v Zhurnal Tekhnicheskoi Fiziki, 2017 Volume 43, Issue 9, Pages 43–51 (Mi pjtf5927)

Decoding of digital magnetic recording with longitudinal magnetization of a tape from a magneto-optical image of stray fields

F. V. Lisovskii, E. G. Mansvetova

Kotelnikov Institute of Radioengineering and Electronics, Fryazino Branch, Russian Academy of Sciences

Abstract: For digital magnetic recording of encoded information with longitudinal magnetization of the tape, the connection between the domain structure of a storage medium and magneto-optical image of its stray fields obtained using a magnetic film with a perpendicular anisotropy and a large Faraday rotation has been studied. For two-frequency binary code without returning to zero, an algorithm is developed, that allows uniquely decoding of the information recorded on the tape based on analysis of an image of stray fields.

Received: 01.05.2016

DOI: 10.21883/PJTF.2017.09.44575.16321


 English version:
Technical Physics Letters, 2017, 43:5, 431–434

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© Steklov Math. Inst. of RAS, 2026