Data carrier and data carrier system
US7834753B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2007 |
| Grant date | Nov 16, 2010 |
| Priority date | — |
| Expiry date | Dec 7, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/07769
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Both RF communication and contact serial communication can be performed with the use of: communication protocol storage unit for storing a communication protocol for performing communication with an external communication apparatus; a coil terminal section provided with two coil terminals for performing communication with the external communication apparatus with an RF signal; a contact communication terminal section provided with a first communication terminal, a second communication terminal, a power supply voltage terminal and a ground terminal as contact communication terminals for performing contact communication with the external communication apparatus; and connection control unit for causing the power supply voltage terminal and a power supply of an internal switch circuit to be in contact or non-contact with each other depending on the level of voltage applied to the first and second communication terminals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.