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    • 1. 发明公开
    • MAGNETIC DATA ERASE DEVICE AND MAGNETIC DATA ERASE METHOD
    • MAGNETISCHE DATENLSCHEINRICHTUNG UND MAGNETISCHESDATENLÖSCHVERFAHREN
    • EP1662487A1
    • 2006-05-31
    • EP04745643.9
    • 2004-06-07
    • Orient Instrument Computer Co., Ltd
    • ITO, Tomoaki ORIENT INSTRUMENT COMPUTER CO., LTD.
    • G11B5/024
    • G11B5/0245
    • A magnetic data eraser adapted to completely degauss a recording medium in a magnetic recording device to erase magnetic data with certainty and a method for erasing magnetic data, and further, a magnetic data eraser also adapted to erase recorded magnetic data on a magnetic recording medium or a hard disk drive incorporated in a computer and a method for erasing magnetic data.
      The magnetic data eraser (1, 3, 5) includes a power supply circuit (2) for generating an attenuating alternating voltage whose peak value reduces as time passes, a receptacle (20a, 28a) for accommodating a magnetic recording medium (22a, 32a, 33), and an electric coil (15) for degaussing the magnetic recording medium (22a, 32a, 33), and is adapted to apply the attenuating alternating voltage generated in the power supply circuit (2) to the coil (15) to generate within the receptacle (20a, 28a) an attenuating alternating magnetic field whose peak value of magnetic flux density reduces as time passes.
    • 一种磁数据擦除器,其适于完全消磁磁记录装置中的记录介质以确定地擦除磁数据,以及一种用于擦除磁数据的方法,还有一种磁数据擦除器,还适用于擦除磁记录介质上的记录磁数据, 并入计算机的硬盘驱动器和擦除磁数据的方法。 磁数据擦除器(1,3,5)包括:电源电路(2),用于产生峰值随时间减小的衰减交流电压,用于容纳磁记录介质的容器(20a,28a) ,33)和用于对磁记录介质(22a,32a,33)进行消磁的电线圈(15),并且适于将在电源电路(2)中产生的衰减的交流电压施加到线圈(15)至 在插座(20a,28a)内产生衰减的交变磁场,其磁通密度的峰值随时间流逝而减小。