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    • 3. 发明授权
    • Magnetic bubble memory device and method for operating the same
    • 磁性气泡存储装置及其操作方法
    • US4434476A
    • 1984-02-28
    • US408849
    • 1982-08-17
    • Kazuo MatsudaMakoto OhashiYoshio SatohTsutomu MiyashitaKazunari Komenou
    • Kazuo MatsudaMakoto OhashiYoshio SatohTsutomu MiyashitaKazunari Komenou
    • G11C19/08
    • G11C19/0858G11C19/0883
    • A magnetic bubble memory device includes: a magnetic layer with a first region having an easy axis of magnetization extending in a certain direction and a second region surrounding the first region and having an easy axis of magnetization substantially perpendicular to that of the first region, said first region defining a plurality of bubble propagation patterns; and a replicate gate with a stretch conductor pattern, to which an electric current is applied so as to stretch a bubble between said propagation patterns, and a cutting pattern formed in the second region between the propagation patterns and adapted to lower the bubble collapse field so as to cut the stretched domain. The replicate gate is operated by applying an operating current pulse to the stretch conductor pattern, said operating pulse including a stretch pulse for stretching the bubble and a cut pulse, following the stretch pulse, for cutting the stretched domain.
    • 磁性气泡存储装置包括:具有第一区域的磁性层,该第一区域具有在一定方向上延伸的易磁化轴和围绕第一区域的第二区域,并且具有与第一区域基本上垂直的易磁化磁化轴, 第一区域限定多个气泡传播模式; 以及具有拉伸导体图案的复制栅极,施加电流以在所述传播图案之间拉伸气泡,以及形成在传播图案之间的第二区域中的切割图案,并适于降低气泡塌陷场,从而 为了切割伸展的域。 通过对拉伸导体图案施加工作电流脉冲来操作复制栅极,所述操作脉冲包括用于拉伸气泡的拉伸脉冲和拉伸脉冲之后的切割脉冲,用于切割拉伸区域。
    • 4. 发明授权
    • Magnetic bubble memory device
    • 磁性气泡记忆装置
    • US4415988A
    • 1983-11-15
    • US283182
    • 1981-07-14
    • Kazunari KomenouTsutomu MiyashitaMakoto Ohashi
    • Kazunari KomenouTsutomu MiyashitaMakoto Ohashi
    • G11C19/08
    • G11C19/0883
    • A magnetic bubble memory device comprises: a magnetic layer which has a first region having the easy axis of magnetization extending in a certain direction and a second region surrounding said first region and having the easy axis of magnetization substantially perpendicular to that of the first region, said first region defining at least one major loop pattern for propagation of information bubbles and a plurality of minor loop patterns for storage of information bubbles; and an electrical conductor pattern deposited on said magnetic layer in a region in which the major loop pattern and the minor loop patterns are opposed to each other, thereby constructing a transfer gate. The major loop pattern is provided, at the portions thereof substantially opposed to the ends of the minor loop patterns in the transfer gate, with gaps through which the bubbles are transferred between the major loop pattern and the minor loop patterns. The transfer gate is driven by means of a convex-shaped pulse of transfer current.
    • 磁性气泡存储装置包括:磁性层,其具有易磁化轴沿一定方向延伸的第一区域和围绕所述第一区域的第二区域,并且具有与第一区域基本垂直的易磁化磁化轴, 所述第一区域限定用于信息气泡的传播的至少一个主循环图案和用于存储信息气泡的多个次循环图案; 以及在主环形图案和次环形图案彼此相对的区域中沉积在所述磁性层上的电导体图案,从而构成传送门。 提供主要环形图案,其基本上与传输门中的次级环形图案的端部相对的部分具有间隙,气泡通过该间隙在主环形图案和次环形图案之间传递。 传输门由传输电流的凸形脉冲驱动。