Electronic identification system and method with source authenticity verification
US6724895B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1999 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | Jun 16, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3226
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An RF electronic identification system (10) is disclosed and claimed. The system includes at least one transponder encoder (14.1) for writing data into a memory arrangement (52) of a selected transponder (1.1) of a plurality of transponders (1.1 to 1.n) adapted to receive data from the at least one encoder. The system further includes at least one verifier (16) for interrogating a selected transponder (1.1) and to read data stored in the transponder. The encoder includes a controller (42) for providing an identification code characteristic of the encoder to form part of the data to be written into the transponder. The verifier includes computing means (56) for extracting the identification code from the data read thereby and for comparing the code to authorized codes. An indicator (18) provides an indication whether the identification code corresponds to any of the authorized codes or not. A method of verifying the authenticity of a transponder is also disclosed and claimed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.