| 摘要 |
PURPOSE:To reduce the test time, by reversing a rotating magnetic field, and passing through an eraser and a divider and the like earlier, after transferring magnetic bubbles to an information storage loop. CONSTITUTION:In a test method of a magnetic bubble memory element 1, two or more bubbles are produced as a data region with a magnetic bubble generator 2, and after transferring this data region to an information storage loop 6 toward the direction shown in the arrow in solid lines, an external rotating magnetic field is stopped. Next, the external rotating magnetic field is rotated toward the inverse direction, and while the data region is transferred to the inverse direction shown in the arrow in dotted lines, the bubbles in the data region are selectively erased witn an eraser 3 and transfer is kept unitl the data region exceeds a divider 4 for stopping. Further, the rotating magnetic field is again rotated to the normal direction and the data region is transferred to a detector 5 via the divider 4 as shown in the arrow shown in one dotted chain line for the test of each function. |
