Location information detecting method and system
US7212126B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 19, 2004 |
| Grant date | May 1, 2007 |
| Priority date | — |
| Expiry date | Apr 8, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/756
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and system for detecting information relating to the location of a radio IC tag, using an interrogator unit. In one implementation of such method and system, a radio IC tag is securely attached to a fixed object, and a mobile object that has an interrogator unit moves into communication range with the radio IC tag. As the interrogator unit sends radio waves to the radio IC tag, the radio IC tag existing in the communication range sends reflected waves to the interrogator unit. When the interrogator unit receives the reflected waves, it detects and demodulates the reflected waves. The interrogator unit then reads information relating to the location of the radio IC tag as the information stored in the radio IC tag.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.