Magnetic bubble signal generator
US4010454A · kind A · utility
1Cited by
4References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 1974 |
| Grant date | Mar 1, 1977 |
| Priority date | — |
| Expiry date | May 30, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/505
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A magnetic memory including a number of magnetic bubble recirculating loops and a common channel controls the frequency of signals generated by flip-flops connected to a bubble detector in the common channel. A choice of two-out-of-seven loops for bubble storage permits the control of the flip-flops in a manner to provide a multi-frequency output useful for TOUCH-TONE telephone dialing operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.