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1. 发明授权

US4174540A Bubble domain transfer switches 失效
标题翻译：泡泡域转移开关
公开(公告)号：US4174540A
公开(公告)日：1979-11-13
申请号：US811734
申请日：1977-06-30
申请人： Mitchell S. Cohen , Emerson W. Pugh
发明人： Mitchell S. Cohen , Emerson W. Pugh
IPC分类号： G11C11/14 , G11C19/08
CPC分类号： G11C19/0883 , G11C19/085
摘要： These improved current controlled transfer switches are particularly useful for changing the propagation path of very small bubble domains without requiring large amounts of transfer current. The underlying principle is that the transfer operation occurs when the magnitude of the magnetic drive field used to move bubble domains has diminished to a small value, or is zero. This means that the magnetic field due to current in the switch does not have to overcome the effect of the drive field and therefore can be very small while still being effective. This is termed a "start/stop" operation and in one embodiment, current-assisted transfer is achieved by utilizing a change in the sequence of the magnetic drive field (generally an in-plane rotating field) at the time of transfer. In another embodiment, a continuous "three-quadrant" magnetic drive field is used instead of the customary 360.degree. rotating drive field. This three-quadrant field cycle is also the normal cycle for bubble storage operations and bubble motion elsewhere in the magnetic circuit is not disturbed by the switching operation because all devices are designed to operate with only one type of drive field cycle, which is the three-quadrant cycle. Switches operating in accordance with these principles do not have to have a particular design; in fact, several different designs are illustrated.
摘要翻译：这些改进的电流控制转移开关特别适用于改变非常小的气泡域的传播路径，而不需要大量的转移电流。基本原理是当用于移动气泡畴的磁驱动场的幅度已经减小到一个较小的值或者为零时，发生转移操作。这意味着由开关中的电流引起的磁场不必克服驱动场的影响，因此在仍然有效的情况下可以非常小。这被称为“启动/停止”操作，并且在一个实施例中，通过利用在传送时的磁驱动场（通常为平面内旋转场）的顺序的改变来实现电流辅助传送。在另一个实施例中，使用连续的“三象限”磁驱动场代替常规的360度旋转驱动场。这种三象限场周期也是气泡存储操作的正常循环，并且磁路中的其他地方的气泡运动不受开关操作的干扰，因为所有器件被设计为仅使用一种类型的驱动场周期来操作，这是三个适应周期。根据这些原则操作的开关不必具有特定的设计; 实际上，示出了几种不同的设计。

2. 发明授权

US3990061A Gapless propagation structures for magnetic bubble domains 失效
标题翻译：用于磁泡区域的无隙传播结构
公开(公告)号：US3990061A
公开(公告)日：1976-11-02
申请号：US429018
申请日：1973-12-27
申请人： Emerson W. Pugh
发明人： Emerson W. Pugh
IPC分类号： G11C11/14 , G11C19/08
CPC分类号： G11C19/0816
摘要： Gapless, single-sided propagation structures are provided for implementing the continuous movement of magnetic bubble domains in both straight lines and around reverse direction turns under the control of a reorienting in-plane field. One embodiment comprises a closed loop of open-sided, joined hexagonal patterns having traps and dead end legs at the joined corners to cause transfer from one hexagonal pattern to the next, thus implementing continuous circulation around the loop and preventing backtracking. Another embodiment employs straight, parallel strips joined at their ends to form a loop. Bubble movement is promoted by a series of angled strip legs intersecting the main strips to provide sequentially advancing magnetic poles as the field vector rotates.
摘要翻译：提供了无差的单面传播结构，用于在重新定向的平面场的控制下实现两个直线和反向方向匝中的气泡域的连续移动。一个实施例包括在接合的拐角处具有陷阱和死端腿的开放侧接合六边形图案的闭环，以使得从一个六边形图案转移到下一个六边形图案，从而实现围绕该环的连续循环并防止回溯。另一个实施例采用在其端部连接的直的平行条形成环。通过与主条相交的一系列成角度的条腿促进气泡运动，以在场向量旋转时提供顺序前进的磁极。

3. 发明授权

US4263662A Guard rail for contiguous element bubble chips 失效
标题翻译：连接元件气泡芯片的护轨
公开(公告)号：US4263662A
公开(公告)日：1981-04-21
申请号：US107993
申请日：1979-12-28
申请人： George E. Keefe , Emerson W. Pugh
发明人： George E. Keefe , Emerson W. Pugh
IPC分类号： G11C19/08
CPC分类号： G11C19/0858
摘要： Guard rails are described for particular use with magnetic bubble domain chips using contiguous propagation elements. These guard rails generally surround the active device area (storage area) of the chip and are used to move stray bubble domains from the storage area to the edge of the chip, or to a collapser etc., and also to prevent stray bubbles from entering the active device area. These guard rail structures are comprised of contiguous propagation elements characterized by an undulating edge and a smooth edge, both of which generally move bubble domains away from the active device area in response to the reorientation of the same magnetic drive field. In one embodiment, the guard rail is a spiral structure surrounding the active device area, having one end in the interior of the magnetic bubble chip adjacent to the active device area, and another end near the edge of the chip, or near a bubble annihilator, etc. In another embodiment, the guard rail is comprised of a plurality of structures generally defining a broken-spiral which surround the active device area. One end of each of structure is located near the active device area, while the other end is disposed toward the edge of the magnetic bubble chip.
摘要翻译：描述了用于使用连续传播元件的磁泡区域芯片特别使用的护轨。这些护栏通常围绕芯片的有源器件区域（存储区域），并且用于将杂散气泡区域从存储区域移动到芯片的边缘或者折叠器等，并且还用于防止杂散气泡进入有源设备区域。这些保护轨道结构由连续的传播元件组成，其特征在于起伏的边缘和平滑的边缘，两者都响应于相同的磁驱动场的重新定向而一般使气泡区域远离有源器件区域移动。在一个实施例中，保护轨是围绕有源器件区域的螺旋结构，其中一个端部位于磁性气泡芯片的内部，与有源器件区域相邻，另一端靠近芯片的边缘，或靠近气泡消除器等等。在另一个实施例中，护栏由大体上限定围绕有源设备区域的断螺旋形的多个结构组成。每个结构的一端位于有源器件区域附近，而另一端朝向磁性气泡芯片的边缘设置。

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