Systems, methods, and apparatus for providing indoor navigation using optical floor sensors
US9702707B2 · kind B2 · utility
13Cited by
20References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2014 |
| Grant date | Jul 11, 2017 |
| Priority date | — |
| Expiry date | Dec 1, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S901/47
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus includes (i) an absolute position sensor coupled to a case, the position sensor including a light sensor, and circuitry configured to determine an identifier within a barcode, the individual bars of the barcode being sensed by the light sensor, and (ii) a motion sensor coupled to the case, the motion sensor including a first magnetic field sensor, a code wheel having two or more magnets positioned to rotate in unison with a wheel of the moveable object, and encoder circuitry configured to determine an amount of rotation of the wheel of the moveable object based on an output of the first magnetic field sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.