| 摘要 |
PURPOSE:To provide sufficiently wide bias magnetic field margin by changing the length in one transfer path pattern group when a magnetic bubble moves from one transfer path pattern group to the next transfer path pattern group to eliminate an error attended with the stretching of the magnetic bubble. CONSTITUTION:The length of the magnetic bubble is l1 at the lower end of an (a) column transfer path but the length is stretched to the length of l2 while being transferred to the upper half of the (a) column transfer path. Since the transmission and receiving of the magnetic bubble from the (a) column transfer path to the (b) transfer path are attained while keeping the length of l2, no conventional problem occurs. Further, while the upper half of the (b) column transfer path is transferred, the magnetic bubble is stretched again. Thus, the magnetic bubble is stretched to a desired length. That is, when the magnetic bubble crosses a gap between the transfer paths of a stretcher, its length is unchanged, a magnetic bubble driving force equal to any part of the magnetic bubble stretched long is operated to suppress malfunction of the magnetic bubble transfer of the stretcher. |
