Method for determining the displacement of an object
US5651039A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1995 |
| Grant date | Jul 22, 1997 |
| Priority date | — |
| Expiry date | Oct 27, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2557/33
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
For determining a displacement of an object (41) from sheetlike material along an observing position (11, 12), each time the object (41) has been displaced over a particular distance, a pulse is generated. The passing object (41) is scanned, whereby a plurality of samples are generated between two pulses, independently of the displacement of the object (41), and to these samples moreover sequence information (37) is coupled. The number of samples between two pulses (39) and the number of generated pulses (38) are counted. The sequence information (37, 38) coupled to identified samples and the counted number of samples between two pulses (39) are used to determine the displacement of the object with greater accuracy than would be possible with the displacement-dependent pulses alone, without requiring that to this end interpolation pulses be generated and processed which are to be processed separately.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.