System and method for reading data from a plurality of chips comprising an RFID tag
US8979638B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2012 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Mar 23, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F17/3248
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The present application provides a system which transmits a request signal to a plurality of chips located within a communication range of an antenna, receives from a chip which has received the request signal an answer back including identification information and a plurality of error detection codes of the chip, generates a plurality of error detection codes from the identification information of the chip, detects match or mismatch of a plurality of error detection codes received and a plurality of error detection codes generated, and when, among a plurality of pairs of the error detection codes, match of a pair of error detection codes is detected and mismatch of another pair of error detection codes is detected, determines that the match of the pair of the error detection codes of the chip is misrecognition resulting from collision of a response signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.