Bubble domain storage using improved transfer switch
US4271485A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1978 |
| Grant date | Jun 2, 1981 |
| Priority date | — |
| Expiry date | Aug 28, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C19/0883
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A magnetic bubble domain storage device comprising a plurality of storage shift registers and at least one major shift register, which serves to provide bubble domains to the storage register and to receive bubble domains from the storage registers. A novel transfer switch, or gate, is located between each of the storage registers and the major register, which is typically configured in the conventional major/minor loop type of storage organization. This transfer switch can be made using single level masking or multiple level masking and is characterized in that the locus of bubble domain propagation paths through the switch element generally defines the letter "Y". These propagation paths are from one arm of the Y to the other arm, from one arm of the Y to the stem or base portion, or the reverse where a bubble domain travels from the stem (base) of the Y to one of the arms of the Y. In a particular embodiment, the transfer switch is comprised of a Y-shaped magnetic element having a current carrying conductor which crosses the stem portion of the Y-shaped magnetic element. The particular path travelled by bubble domains through the transfer switch is determined by the presence or …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.