Apparatus for communication with a radio-frequency tag, radio-frequency tag, radio-frequency communication system, and radio-frequency communication method
US7683784B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2007 |
| Grant date | Mar 23, 2010 |
| Priority date | — |
| Expiry date | Apr 15, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/77
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A radio-frequency communication system including a plurality of apparatus for communication with a radio-frequency tag, and at least one radio-frequency relay tag, wherein each of the apparatus for communication with a radio-frequency tag includes a transmitter portion configured to transmit to the relay tag a message writing command for writing on the relay tag a desired message to be transmitted to another apparatus for communication with a radio-frequency tag via the relay tag, and each relay tag includes a plurality of message storage portions provided to store the messages transmitted from the respective apparatus for communication with a radio-frequency tag.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.