Superconducting analog-to-digital converter with bidirectional counter
US4922250A · kind A · utility
8Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1987 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | Feb 19, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S505/827
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An analog-to-digital converter quantizer and bidirectional counter using superconducting quantum interference devices (SQUD's) as the principal elements. A double-junction non-latching SQUID is used as a quantizer to produce unipolar output pulses on two different output lines, indicative of positive and negative increments of change in an analog signal current. The unipolar pulses are then counted in a bidirectional counter that employs double-junction non-latching SQUID's as counter stages and as logic gates for the propagation of carry and borrow signals from stage to stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.