Patent · US Expired

Magnetic bubble memory device

US4473891A · kind A · utility

0Cited by
0References
3Claims
0Family size

Inventors

Key dates

Filing dateNov 8, 1982
Grant dateSep 25, 1984
Priority date
Expiry dateNov 8, 2002

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG11C19/0875
  • WIPO fieldComputer technology
  • WIPO sectorElectrical engineering

Abstract

In a magnetic bubble memory device comprising a number of magnetic bubble propagation paths each including magnetic bubble propagation bit segments arrayed in the direction of propagation of magnetic bubbles, the propagation paths being arranged in the direction perpendicular to the propagation direction of magnetic bubbles, d/.lambda..sub.x is set to less than 0.2, where .lambda..sub.x is the period of arrangement of the magnetic bubble propagation paths and d is the distance between close adjoining magnetic bubble propagation bit segments of adjacent magnetic bubble propagation paths.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.