Magnetic bubble memory devices
US4293929A · kind A · utility
0Cited by
2References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 16, 1979 |
| Grant date | Oct 6, 1981 |
| Priority date | — |
| Expiry date | Aug 16, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C19/085
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Around the magnetic bubble memory chip placed within a recess formed at approximate center of the insulating substrate are arranged a plurality of rod-like members of soft ferromagnetic material to be on substantially the same plane as the major surface of the chip. The intensity of the rotating magnetic field generated by the coils wound around the outer periphery of the insulating substrate encircling the chip is amplified by the plurality of rod-like members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.