Standard deviation determining apparatus
US3952185A · kind A · utility
9Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1975 |
| Grant date | Apr 20, 1976 |
| Priority date | — |
| Expiry date | Jan 17, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S131/91
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Standard deviation determining apparatus includes an integrator for integrating changes exhibited by a random variable, a circuit for selecting integrator output signals and a further circuit for averaging signals selected by the selecting circuit. The apparatus provides for periodic resetting of the integrator, for selecting integrator output signals occurring during predetermined time periods and for maintaining the integrator output constant in amplitude during the selecting of signals therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.