Tag communication apparatus, control method for tag communication apparatus, computer readable medium for tag communication control and tag communication control system
US7573418B2 · kind B2 · utility
9Cited by
5References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 20, 2005 |
| Grant date | Aug 11, 2009 |
| Priority date | — |
| Expiry date | Jul 20, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/0218
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A direction estimating section estimates the incoming direction of a radio wave from an RFID tag in each of antennas. A position calculating section calculates the position of the RFID tag on the basis of the incoming direction of the radio wave estimated in the direction estimating section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.