Shift register for magnetic domain propagation memory
US4419742A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 29, 1980 |
| Grant date | Dec 6, 1983 |
| Priority date | — |
| Expiry date | Oct 29, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C19/0866
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The register comprises a soft magnetic layer in which is formed the domain propagation channel, a hard magnetic layer and a domain shift conductor. The propagation channel comprises a writing box, a reading box, narrow domain storage zones, widened domain growth boxes, a domain increasing zone, upstream the reading box, which includes intermediate domain increasing boxes, which have a large surface with respect to that of the other growth boxes. Each increasing box comprises lateral shoulders and is not covered by the shift conductor. A coil or a solenoid creates at the level of the increasing zone and of the reading box, a pulsating external magnetic field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.