公开(公告)号：US4145750A

公开(公告)日：1979-03-20

申请号：US816928

申请日：1977-07-19

申请人： Shigeru Yoshizawa ,  Yutaka Sugita ,  Nobuo Saito ,  Yuji Arai ,  Nakahiko Yamaguchi

发明人： Shigeru Yoshizawa ,  Yutaka Sugita ,  Nobuo Saito ,  Yuji Arai ,  Nakahiko Yamaguchi

IPC分类号： G11C11/14 ,  G11C19/08

CPC分类号： G11C19/085

摘要： A field access magnetic bubble memory device including a memory chip applied with an in-plane magnetic field at need is disclosed. At a transient stop operation of the device before its interrupted state, an in-plane field is removed after it has been held for a predetermined period following the cessation of rotation thereof. The in-plane field may be increased upon the cessation of rotation thereof. At a transient start operation of the device after the interrupted state, an in-plane field having no rotation and the same direction as at the transient stop operation is applied for a predetermined period before the initiation of rotation thereof. The applied in-plane field may be increased upon the initiation of rotation thereof.

摘要翻译： 公开了一种包括在需要时应用平面内磁场的存储芯片的磁场存取磁气泡存储装置。 在设备在其中断状态之前的瞬时停止操作中，在停止旋转之后的预定时间内，移除平面内场。 平面内场可以在其旋转停止时增加。 在中断状态之后的装置的瞬时启动操作中，在其开始转动之前的预定时间内施加不具有旋转和与瞬时停止操作相同方向的平面内场。 所施加的面内场可以在其旋转开始时增加。

公开(公告)号：US4233668A

公开(公告)日：1980-11-11

申请号：US946864

申请日：1978-09-29

申请人： Nakahiko Yamaguchi ,  Susumu Hibi ,  Shigeru Yoshizawa ,  Shoji Yoshimoto ,  Akira Kobayashi

发明人： Nakahiko Yamaguchi ,  Susumu Hibi ,  Shigeru Yoshizawa ,  Shoji Yoshimoto ,  Akira Kobayashi

IPC分类号： G11C11/14 ,  G11C19/08 ,  G11C29/00

CPC分类号： G11C29/003 ,  G11C19/0875

摘要： Method and apparatus for testing a magnetic bubble memory are disclosed wherein a most severe magnetic bubble domain arrangement which fully causes the ununiformity of magnetic interaction between magnetic bubble domains is experimentally determined, and a basic pattern [P] and a test information pattern determining an arrangement of the basic patterns [P] and complementary patterns [P] thereof for realizing that magnetic bubble domain arrangement are stored in memory units, respectively, and the basic patterns [P] and the complementary patterns [P] are sequentially read out in accordance with the test information pattern to generate magnetic bubble domain trains in a storage area of the magnetic bubble memory. The magnetic bubble domain trains are then read out by a magnetic bubble detector and the read-out signals are converted to logical signals by a sense amplifier unit and the logical signals are synchronized with logical signals corresponding to the test information pattern and compared therewith to produce an identity or non-identity signal and thus the disclosed method and apparatus for testing the magnetic bubble memory can exactly evaluate a memory characteristic of the magnetic bubble memory.

摘要翻译： 公开了用于测试磁性气泡存储器的方法和装置，其中完全导致磁性气泡区域之间的磁性相互作用的不均匀性的最严重的磁性气泡区域布置被实验地确定，并且确定基本图案[P]和确定布置的测试信息图案 基本图案[P]和互补图案[P]分别用于实现磁性气泡结构排列存储在存储单元中，基本图案[P]和互补图案[P]按照 在气泡存储器的存储区域中产生磁泡畴列的测试信息模式。 然后通过磁性气泡检测器读出磁性气泡畴列，并且通过读出放大器单元将读出的信号转换成逻辑信号，并且逻辑信号与对应于测试信息图案的逻辑信号同步并与之进行比较以产生 身份或非身份信号，因此所公开的用于测试磁性气泡存储器的方法和装置可以精确地评估磁性气泡存储器的存储特性。