Patent · US Active

Contactless data reception using a cancellation circuit

US8905310B2 · kind B2 · utility

0Cited by

3References

23Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Walter Kargl · Graz, AT
Edmund Ehrlich · Grambach, AT
Matthias Emsenhuber · Graz, AT

Key dates

Filing date	Mar 31, 2009
Grant date	Dec 9, 2014
Priority date	—
Expiry date	Aug 30, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG06K19/0723
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A contactless device including a transmission antenna configured to transmit a transmission signal; a pickup antenna configured to detect a field generated by a pickup signal, which comprises a response signal transmitted from another contactless device and the transmission signal; and a cancellation circuit configured to subtract a voltage of the transmission antenna from a voltage of the pickup antenna.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.