Nxp B.v.

Helmut Haar

Martin Posch

Kurt Bischof

Heiko Scharke

An integrated circuit () for a transponder (), wherein said integrated circuit () is switchable between a TTF (transponder talks first) and an RTF (reader talks first)-mode within a switching timeframe (TF), wherein the position of the switching timeframe (TF) is shif table in relation to a timeframe (TF) allocated to the TTF-mode. In a preferred embodiment, the switching timeframe (TF) is before a timeframe (TF) allocated to the TTF-mode by default. After initialization of the transponder (), the switching timeframe (TF) is switched to a position after the timeframe.

RFID transponder

A circuit has a first memory for modifiable storage of information, the information being modifiable by an ambient parameter of the circuit, which ambient parameter acts on the first memory. The first memory includes a test memory area for storing test information. The circuit also includes a second memory for unmodifiable storage of reference information and a detection circuit. The test information and reference information is supplied to the detection circuit. The detection circuit then detects whether a modification of the originally stored test information has been brought about by an ambient parameter acting on the first memory.

Growing community of inventors

Kainbach, Austria

Helmut Haar