Position measuring method and apparatus for generating periodic signals free of harmonics
US5583798A · kind A · utility
10Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 5, 1994 |
| Grant date | Dec 10, 1996 |
| Priority date | — |
| Expiry date | Aug 5, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/301
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A position measuring method and apparatus for obtaining signals substantially free of harmonics with the aid of a periodic graduation and a non-periodic or aperiodic scanning graduation, wherein the position of the grating lines n within the scanning graduation is determined in accordance with a statistical distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.