| 摘要 |
<p>A re-programmable memory is provided for storing information data which may be used for controlling the stitch position coordinates in the operation of a sewing machine. The memory is provided by a strata of locally magnetizable material of which the magnetization may be relatively easily induced or erased. Relatively movable with respect to the strata are coding magnets which in comparison with the strata are permanent, and by which coded data may be selectively induced on the strata in the form of local magnetized areas. The stored data may be extracted from the strata either by direct mechanical linkage responsive to the local magnetized areas on the strata or by electrical output signals generated by a Hall effect device or the like in response to the local magnetized areas on the strata.</p> |
