Claims
- 1. In a magnetic memory system in which bits of binary data are stored as inverted Neel wall sections about an associated Bloch-line, which inverted Neel wall sections are generated in a wall in a magnetizable layer having magnetoresistive properties and in which said binary data are serially propagated along said wall by the intersecting fields provided by associated drive lines, which drive lines have memory segments that are associated with associated memory cells in said magnetizable layer in which associated ones of said bits of binary data are stored as inverted Neel wall sections, a method of magneto-resistively reading out said bits of stored binary data comprising:
- conductively coupling to said magnetizable layer a conductive probe along its length and having on one end a tip that is oriented at or near the Bloch-line position in a memory segment of the wall in said magnetizable layer and having the other end of said conductive probe extend along said wall to an edge of said magnetizable layer;
- conductively coupling to said magnetizable layer, concentric to and separated from the tip of said conductive probe, a conductive crescent along its length;
- coupling an electrical signal across said conductive probe and said conductive crescent; and,
- determing the resistance in said magnetizable layer between the opposing concentric edges of the tip of said conductive probe and said conductive crescent as an indication of whether or not a Bloch-line is stored in said memory segment.
- 2. In a cross-tie wall memory system in which bits of binary data are stored as inverted Neel wall sections, which inverted Neel wall sections are bounded by a cross-tie on one end and by a Bloch-line on the other end, of a cross-tie wall in a magnetizable layer having magneto-resistive properties and in which each of said bits is stored in a memory segment that is associated with an associated memory cell in said magnetizable layer, a method of magneto-resistively reading out said bits of stored binary data comprising:
- conductively coupling to said magnetizable layer a conductive probe along its length and having on one end a tip that is oriented near the Bloch-line position in a memory segment of the cross-tie wall in said magnetizable layer and having the other end of said conductive probe extend along the surface of said magnetizable layer toward an edge thereof;
- conductively coupling to said magnetizable layer, concentric to and separated from the tip of said conductive probe, a conductive crescent along its length;
- propagating a Bloch-line along said cross-tie wall and into the area of the tip of said conductive probe, from out of one of said memory segments;
- coupling an electrical signal between said conductive probe and said conductive crescent; and,
- determining the resistance in said magnetizable layer between the opposing concentric edges of the tip of said conductive probe and said conductive crescent as an indication that a Bloch-line had been stored in said one memory segment.
Parent Case Info
This is a division of application Ser. No. 715,462, filed Aug. 18, 1976 and now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4034359 |
Torok et al. |
Jul 1977 |
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Divisions (1)
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Number |
Date |
Country |
Parent |
715462 |
Aug 1976 |
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