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    • 11. 发明授权
    • Method and device for protection of an mram device against tampering
    • 用于保护混合器件免受篡改的方法和装置
    • US07712147B2
    • 2010-05-04
    • US10539548
    • 2003-12-15
    • Kars-Michiel Hubert LenssenRobert Jochemsen
    • Kars-Michiel Hubert LenssenRobert Jochemsen
    • G06F11/30G06F12/14G11C19/08G11C15/02G11C11/06G11C11/00
    • G11C11/15G06K19/07372G11C11/16H01L23/57H01L2924/0002H01L2924/00
    • Data, stored in MRAM-cells (12) should be protected against misuse or read-out by unauthorised persons. The present invention provides an array (10) of MRAM-cells (12) provided with a security device (14) for destroying data stored in the MRAM-cells (12) when they are tampered with. This is achieved by placing a permanent magnet (16) adjacent the MRAM-array (10) in combination with a soft-magnetic flux-closing layer (18). As long as the soft-magnetic layer (18) is present, the magnetic field lines (20) from the permanent magnet (16) are deviated and flow through this soft-magnetic layer (18). When somebody is tampering with the MRAM-array (10), e.g. by means of reverse engineering, and the flux-closing layer (18) is removed, the flux is no longer deviated and affects the nearby MRAM-array (10), thus destroying the data stored in the MRAM-cells (12).
    • 存储在MRAM单元(12)中的数据应受到保护,防止未经授权的人员误用或读取。 本发明提供了一种具有安全装置(14)的MRAM单元(12)的阵列(10),用于当它们被篡改时,破坏存储在MRAM单元(12)中的数据。 这通过将与MRAM阵列(10)相邻的永磁体(16)与软磁通量闭合层(18)组合来实现。 只要存在软磁性层(18),来自永磁体(16)的磁场线(20)就会偏离并流过该软磁层(18)。 当某人篡改MRAM阵列(10)时,例如, 通过逆向工程,并且去除磁通密闭层(18),磁通不再偏离并影响附近的MRAM阵列(10),从而破坏存储在MRAM单元(12)中的数据。
    • 17. 发明授权
    • Information carrier, apparatus, substrate, and system
    • 信息载体,仪器,基板和系统
    • US07234154B2
    • 2007-06-19
    • US11257171
    • 2005-10-24
    • Kars-Michiel Hubert LenssenCornelis Maria Hart
    • Kars-Michiel Hubert LenssenCornelis Maria Hart
    • G11B7/24
    • G06K19/045G11B23/28
    • An information carrier contains a storage unit, an integrated circuit and a first and a second coupling element. The coupling elements are intermediate in the transfer of data, and energy from a base station to the integrated circuit, and vice versa. Between the base station and the coupling elements, the transfer of data and energy is contactless, such as by capacitive coupling. Between at least the first and/or both of the coupling elements, data and energy are transferred by the of capacitive coupling. The base station may be in an apparatus containing a reading device of the storage unit. To facilitate the capacitive coupling, the base station contains first and second capacitor plates. The information carrier and the apparatus with the base station containing said capacitor plates together constitute the system, which is suitable for copy protection of the information on the storage unit.
    • 信息载体包含存储单元,集成电路和第一和第二耦合元件。 耦合元件在数据传输中是中间的,从基站到集成电路的能量是中间的,反之亦然。 在基站和耦合元件之间,数据和能量的传输是非接触的,例如通过电容耦合。 在至少第一和/或两个耦合元件之间,数据和能量通过电容耦合传输。 基站可以在包含存储单元的读取装置的装置中。 为了便于电容耦合,基站包含第一和第二电容器板。 信息载体和具有包含所述电容器板的基站的装置构成系统,其适合于对存储单元上的信息进行复制保护。