Abstract: A transponder having a transmitting and receiving device for receiving commands and transmitting data and command processor for executing commands, and a programming device for changing the memory contents, and a data memory which has a first memory area and a second memory area, whereby the first memory area has the first value or a second value, and when the first memory area has the first value, the content of both memory areas can be changed and, in the case of read access to the second memory area, the transmitting/receiving device transmits a predefined or no data stream instead of the memory content of the second memory area.

Abstract: A transponder and a method for wireless data transmission is provided. The transponder comprises an input circuit with input terminals for connecting an antenna coil for data transmission to a base station by means of inductive coupling, a first controllable switching means, at least one resistor, which is looped in series with the first controllable switching means between the input terminals of the input circuit, and a controller which is designed in such a way that it connects through the first switching means as soon as a voltage applied at the input terminals falls below a first settable threshold value, and again interrupts it as soon as the voltage applied at the input terminals for a settable duration is above the first settable threshold value and/or above a second settable threshold value.

Abstract: A method for wireless data transmission, in, for example, RFID systems, between a base station and a passive transponder, as well as a passive transponder is provided by inductive coupling, as well as a passive transponder. It is possible to transmit data from the base station to the transponder by a first data transmission protocol type and by at least one second data transmission protocol type, whereby the first or the at least second data transmission protocol type is selected by writing a configuration register in the transponder.

Abstract: A method for wireless data transmission, in, for example, RFID systems, between a base station and a passive transponder, as well as a passive transponder is provided by inductive coupling, as well as a passive transponder. It is possible to transmit data from the base station to the transponder by a first data transmission protocol type and by at least one second data transmission protocol type, whereby the first or the at least second data transmission protocol type is selected by writing a configuration register in the transponder.

Abstract: A method for wireless data transmission, in, for example, RFID systems, between a base station and a passive transponder, as well as a passive transponder is provided by inductive coupling, as well as a passive transponder. It is possible to transmit data from the base station to the transponder by a first data transmission protocol type and by at least one second data transmission protocol type, whereby the first or the at least second data transmission protocol type is selected by writing a configuration register in the transponder.

Abstract: A transponder and a method for wireless data transmission is provided. The transponder comprises an input circuit with input terminals for connecting an antenna coil for data transmission to a base station by means of inductive coupling, a first controllable switching means, at least one resistor, which is looped in series with the first controllable switching means between the input terminals of the input circuit, and a controller which is designed in such a way that it connects through the first switching means as soon as a voltage applied at the input terminals falls below a first settable threshold value, and again interrupts it as soon as the voltage applied at the input terminals for a settable duration is above the first settable threshold value and/or above a second settable threshold value.

Abstract: A transponder having a transmitting and receiving device for receiving commands and transmitting data and command processor for executing commands, and a programming device for changing the memory contents, and a data memory which has a first memory area and a second memory area, whereby the first memory area has the first value or a second value, and when the first memory area has the first value, the content of both memory areas can be changed and, in the case of read access to the second memory area, the transmitting/receiving device transmits a predefined or no data stream instead of the memory content of the second memory area.

Abstract: A circuit for voltage limitation is provided in a transponder with a resonant circuit, which comprises at least one inductor, a capacitor, a depletion layer component with an input, output, and a control input, a first resonant circuit terminal, which is connected to the input of the depletion layer element, and a second resonant circuit terminal, which is connected to the output of the depletion layer element, whereby there is a connection between the control input of the depletion layer component and the first resonant circuit terminal and the second resonant circuit terminal. A method for voltage limitation in a transponder is provided, whereby for voltage limitation in the transmitting and receiving resonant circuit, the control terminal of the depletion layer element is driven by the voltage of the first and second resonant circuit terminal.

Abstract: A method for wireless data transmission, in, for example, RFID systems, between a base station and a passive transponder, as well as a passive transponder is provided by inductive coupling, as well as a passive transponder. It is possible to transmit data from the base station to the transponder by a first data transmission protocol type and by at least one second data transmission protocol type, whereby the first or the at least second data transmission protocol type is selected by writing a configuration register in the transponder.

Abstract: A method and circuit arrangement is provided for load modulation in a receiving oscillator circuit, which can be mutually coupled with a transmitting oscillator circuit, having at least one inductance, at least one capacitance, and at least one controllable impedance. The controllable impedance can have at least one depletion layer element and at least one ohmic resistance.

Abstract: A transponder and a method for wireless data transmission is provided. The transponder comprises an input circuit with input terminals for connecting an antenna coil for data transmission to a base station by means of inductive coupling, a first controllable switching means, at least one resistor, which is looped in series with the first controllable switching means between the input terminals of the input circuit, and a controller which is designed in such a way that it connects through the first switching means as soon as a voltage applied at the input terminals falls below a first settable threshold value, and again interrupts it as soon as the voltage applied at the input terminals for a settable duration is above the first settable threshold value and/or above a second settable threshold value.

Abstract: A circuit for voltage limitation is provided in a transponder with a resonant circuit, which comprises at least one inductor, a capacitor, a depletion layer component with an input, output, and a control input, a first resonant circuit terminal, which is connected to the input of the depletion layer element, and a second resonant circuit terminal, which is connected to the output of the depletion layer element, whereby there is a connection between the control input of the depletion layer component and the first resonant circuit terminal and the second resonant circuit terminal. A method for voltage limitation in a transponder is provided, whereby for voltage limitation in the transmitting and receiving resonant circuit, the control terminal of the depletion layer element is driven by the voltage of the first and second resonant circuit terminal.

Abstract: An operating and evaluation circuit of an insect sensor is provided, which has a resistor that is dependent on insect infestation, whereby the circuit during stimulation via a transponder generates a current flow through the resistor, detects a change in the resistor as a change in voltage, and compares it with a predetermined threshold. The circuit includes a transponder-stimulated constant current source, which is connected with the resistor so that a constant voltage drops across the resistor.

Abstract: A method and circuit arrangement is provided for load modulation in a receiving oscillator circuit, which can be mutually coupled with a transmitting oscillator circuit, having at least one inductance, at least one capacitance, and at least one controllable impedance. The controllable impedance can have at least one depletion layer element and at least one ohmic resistance.

Abstract: An operating and evaluation circuit of an insect sensor is provided, which has a resistor that is dependent on insect infestation, whereby the circuit during stimulation via a transponder generates a current flow through the resistor, detects a change in the resistor as a change in voltage, and compares it with a predetermined threshold. The circuit includes a transponder-stimulated constant current source, which is connected with the resistor so that a constant voltage drops across the resistor.

Abstract: Method for increasing the supply voltage range of an integrated circuit. In the previously known methods, the electrical parameters of an integrated circuit are adapted to the intended supply voltage during manufacture. With the new method, the electrical parameters are adapted to the supply voltage by an integrated control circuit. This control circuit adapts or compensates the change of the electrical parameters caused by a change of the supply voltage by means of one or a plurality of switching elements.