Magnetic bubble memory devices
US4414646A · kind A · utility
2Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1981 |
| Grant date | Nov 8, 1983 |
| Priority date | — |
| Expiry date | Mar 31, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C19/085
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A magnetic bubble memory device comprises a common package accommodating a lurality of pairs of memory chips. In each pair, the two chips have bubble propagation patterns in confronting relation which are mirror images of each other and additionally angularly offset by 180. Electrical connecting leads between the chips and the outside of the package are carried by insulating films located between the confronting chips. Coils located in the package create a bias magnetic field which is common to all chips. The coils for driving bubbles along the patterns are also common to all chips.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.