Electronic circuit for contactless tag, and contactless tag
US7142117B2 · kind B2 · utility
5Cited by
10References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 29, 2004 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Aug 18, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/0723
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An electronic circuit for a contactless tag includes a rectification circuit that rectifies an induced electromotive force caused by bringing an antenna coil into close proximity to a reader/writer to generate a rectified voltage and a secondary battery. A charging/discharging circuit is provided that charges according to the rectified voltage and discharges the secondary battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.