Error repairing method and apparatus for bubble memories
US4216541A · kind A · utility
30Cited by
5References
3Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 5, 1978 |
| Grant date | Aug 5, 1980 |
| Priority date | — |
| Expiry date | Oct 5, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1076
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An error repairing method and apparatus for a magnetic bubble memory for restoring stored binary data to its original form are described. The method and apparatus are employed to compensate for random error in bubble memories resulting from slipped or disappeared bubbles. The data is coded with an error correcting code, such as a Hamming or Fire code, before storage. The stored, coded data is periodically read from memory and errors are detected and corrected. The corrected, coded data is rewritten into memory. In one embodiment the frequency of the repair cycles is a function of the rate at which errors are detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.