公开(公告)号：US4587636A

公开(公告)日：1986-05-06

申请号：US699705

申请日：1985-02-08

Applicant: Gregory J. Cosimini ,  David S. Lo ,  Lawrence G. Zierhut

Inventor： Gregory J. Cosimini ,  David S. Lo ,  Lawrence G. Zierhut

IPC: G11C19/08 ,  G11C11/14

CPC classification number: G11C19/0858

Abstract: The memory system incorporates a memory element storing binary digital data in the presence, vel non, of a Y-domain cross-tie. The memory element has a planar contour that is substantially symmetrical about a longitudinal axis and that has edge portions that are nowhere perpendicular or parallel to the longitudinal axis. A stabilizing magnetic field applied perpendicular to the longitudinal axis and in the plane of the memory element forms a first Neel wall along the longitudinal axis and causes the magnetization in the memory element to be formed into first and second domains on opposite sides of the Neel wall. When a writing magnetic field oriented in the plane of the memory element and perpendicular to the longitudinal axis but opposite to the stabilizing magnetic field orientation is coupled to the memory element, there is formed in the memory element a third domain separated from the first and second domains by second and third Neel walls having a join with one end of the first Neel wall. The first, second and third Neel walls form a "Y". Because of the nature of this third domain having its magnetization oriented in a direction parallel to the readout current caused to pass through the memory element, it produces a significantly greater difference in the readout signal between the readout of a stored 1 and a stored 0 than that achieved with the prior art cross-tie wall memory element.

Abstract translation: 存储器系统包含存储二进制数字数据的存储元件，存在Y域域交叉的存在。 存储元件具有基本上围绕纵向轴线对称的平面轮廓，并且具有无法与纵向轴线垂直或平行的边缘部分。 垂直于纵向轴线并在存储元件的平面中施加的稳定磁场沿着纵向轴线形成第一Neel壁，并使存储元件中的磁化在Neel壁的相对侧上形成第一和第二区域 。 当在存储元件的平面中定向并且垂直于纵向轴线但与稳定磁场取向相反的写入磁场耦合到存储元件时，在存储元件中形成与第一和第二 具有与第一Neel壁的一端连接的第二和第三Neel壁的区域。 第一，第二和第三个Neel墙形成一个“Y”。 由于该第三域的性质在其磁化方向定向为与通过存储元件的读出电流平行的方向，因此在存储的1的读出和存储的0之间的读出信号之间产生明显更大的差异 这是利用现有技术的交叉连接壁存储元件实现的。

公开(公告)号：US4473893A

公开(公告)日：1984-09-25

申请号：US383434

申请日：1982-06-01

Applicant: Lawrence G. Zierhut ,  David S. Lo

Inventor： Lawrence G. Zierhut ,  David S. Lo

IPC: G11C19/08

CPC classification number: G11C19/0866

Abstract: A nondestructive readout, random access memory system is disclosed. The memory is formed of a plurality of discrete thin ferromagnetic film memory elements in which binary data are stored as the presence, or absence, of cross-tie, Bloch-line pairs. Column lines and row lines form a matrix array of the memory elements, one at each column line, row line intersection. Cross-tie, Bloch-line pairs are formed in the memory elements by the selective coincidence of row line and column line write drive fields while readout of the presence, or absence, of the cross-tie, Bloch-line pair is by a coincident row line read drive field and a column read current signal that flows through the memory elements aligned along a selected column. A read amplifier is differentially coupled across the one fully selected memory element to detect a first, or second, opposite polarity output signal that is indicative of the presence, or absence, of a cross-tie, Bloch-line pair at the one fully selected memory element.

Abstract translation: 公开了非破坏性读出随机存取存储器系统。 存储器由多个离散的薄铁磁膜存储元件形成，其中二进制数据被存储为交叉连接Bloch线对的存在或不存在。 列线和行线形成存储元件的矩阵阵列，每列列线，行线交点。 交叉连接，布洛赫线对在行线和列线写入驱动区域的选择性重合处形成在存储器元件中，同时读出交叉连接的存在或不存在，布洛赫线对是由重合的 行行读取驱动器字段和列读取当前沿着选定列排列的存储器元件的当前信号。 读取放大器跨越一个完全选择的存储器元件差分耦合，以检测第一或第二相反的极性输出信号，该信号指示在完全选择的一个时刻的交叉连接Bloch线对的存在或不存在 记忆元素

公开(公告)号：US4410963A

公开(公告)日：1983-10-18

申请号：US308296

申请日：1981-10-05

Applicant: David S. Lo ,  Maynard C. Paul ,  Lawrence G. Zierhut

Inventor： David S. Lo ,  Maynard C. Paul ,  Lawrence G. Zierhut

IPC: G11C19/08

CPC classification number: G11C19/0841

Abstract: An improved magnetic memory system in which binary data are stored as cross-tie, Bloch-line pairs, which are serially propagated downstream along a cross-tie wall and a magnetizable layer by appropriate drive fields. The magnetizable layer is configured into a data track whose two mirror-image, opposing edges are formed into patterns of asymmetrically shaped edges which form successive narrow portions, or necks, with wide portions therebetween, and which shaped edges are formed about the geometric central line of the data track. The cross-ties are structured in the data track by opposite-edge necks at which the ends of the cross-tie are magnetically stable. The improvement comprises:forming a serpentine energy well along and about the geometric centerline of the data track, which energy well has the same period as the shaped edges;displacing the necks of the opposing edges one half the distance between adjacent necks along each edge; and,propagating the cross-tie, Bloch-line pairs along the data track by rocking alternate ends of the cross-tie from its associated neck to the next adjacent downstream neck.

Abstract translation: 一种改进的磁存储系统，其中二进制数据被存储为交叉连接布洛赫线对，其通过适当的驱动场沿着交叉连接壁和可磁化层在下游串行地传播。 可磁化层被配置成数据轨道，其两个镜像相对边缘形成为不对称形状的边缘的图案，其形成连续的窄部分或颈部，其间具有宽的部分，并且成形边缘围绕几何中心线形成 的数据轨道。 交叉连接在数据轨道中由相对边缘的颈部构成，交叉连接的端部在该轨迹上是磁性稳定的。 改进包括：沿数据轨道的几何中心线沿着和围绕数据轨道的几何中心线形成蛇形能量，该能量与成形边缘具有相同的周期; 将相对边缘的颈部沿着每个边缘移动相邻颈部之间的距离的一半; 并且通过将交叉连接的交替端从其相关联的颈部摆动到下一个相邻的下游颈部，沿着数据轨道传播交叉连接Bloch线对。