Device for detecting a position of an object moving in rotation or translation relative to a base
US5783817A · kind A · utility
6Cited by
2References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 23, 1996 |
| Grant date | Jul 21, 1998 |
| Priority date | — |
| Expiry date | Aug 23, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2455
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a device for detecting a position of an object (linear or circular strip) moving in rotation or translation relative to a base, an incremental track bearing periodically recurring marks and two index tracks bearing a plurality of index marks are scanned by sensors. These sensors supply analog signals which are complementary to each other. In each case, two complementary signals are combined to form a logical track. By a combining of the logical tracks with each other, a further logical track is formed which contains a serial code which corresponds to the absolute value of the position of the object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.