Experiment of optical reading from videotapes using magnetic transfer film

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  • 磁気転写膜を用いた磁気テープの光再生実験(映像情報機器および一般)
  • 磁気転写膜を用いた磁気テープの光再生実験
  • ジキ テンシャマク オ モチイタ ジキ テープ ノ ヒカリ サイセイ ジッケン

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Abstract

In order to greatly increase the speed at which videotapes are read, we propose an optical reading method using a magnetic garnet film. This method allows several data tracks to be read in parallel. We have constructed trial films with a Faraday rotation angle of approximately 5 degrees per micrometer film thickness. An experiment to reproduce videotape data was carried out at a tape speed of 0.367m/s, and a CNR of over 30dB was achieved for a bit-length of 0.385μm.

Journal

  • ITE Technical Report

    ITE Technical Report 33.1 (0), 11-15, 2009

    The Institute of Image Information and Television Engineers

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