Detection device
US11099138B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2017 |
| Grant date | Aug 24, 2021 |
| Priority date | — |
| Expiry date | Sep 28, 2037 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD07B2301/5572
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A phase calculation unit (12) calculates, as a first phase, a deflection angle of a first similarity vector having a first similarity and a second similarity calculated by a similarity calculation unit (11) as elements. The phase calculation unit (12) calculates, as a second phase, a deflection angle of a second similarity vector having a third similarity and a fourth similarity calculated by the similarity calculation unit (11) as elements. A period calculation unit (13) calculates a period of a pattern formed on a long body on the basis of the first phase and the second phase calculated by the phase calculation unit (12). An abnormality detection unit (14) detects an abnormality in the long body on the basis of the period calculated by the period calculation unit (13).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.