Method and apparatus for locating items
US5528232A · kind A · utility
170Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 1994 |
| Grant date | Jun 18, 1996 |
| Priority date | — |
| Expiry date | May 20, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/765
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A communication system that communicates for locating one or more tags in a time and energy efficient manner. The tags are positioned in a communication region and are located by a locator. The tags are located through organized transmission and reception of signals between the tags and the locator. The locator locates and gives directions to tags from the locator using a radio link and a multi-channel ultrasonic acoustic link. The combination of linkages provides the means to determine the unobstructed bearing and distance between the locator and the tag and resolves multipath reflections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.