Infineon Technologies Ag

Infineon Technology Ag

Ralf-Rainer Schledz

Christoph Steiner

Juergen Zimmer

Klemens Pruegl

Andreas Strasser

Norbert Thyssen

Olaf Kuehn

Franz Michael Darrer

Gerald Holweg

Marco Bachhuber

Walter Schuchter

Stefan Gansinger

Marcin Augustyniak

Axel Klein

Vjekoslav Matic

Frédéric Roger

Peter Solyom

Sensor and method for determining operating states associated with one or more tires. The operating state of the tire can be determined based on one or more measures environmental conditions of the tire(s). For example, a controller can be configured to determine a change in one or more environmental conditions, including determining, for example, a rate-of-change value, a variance value, a standard deviation, or the like. The rate-of-change, variance, and/or standard deviation values can be compared to one or more threshold values to determine the operating state(s) associated with the tire(s). The environmental condition can include, for example, acceleration of the tire, pressure of the tire, and/or temperature of the tire. The operating state can be, for example, a filling state indicative of the tire being inflating, and/or a drive state indicative of the tire rotating about its axle.

Tire monitoring system and method

Radio frequency devices and methods are provided where a network like a filter network or impedance matching network comprises a series connection of at least two inductors.

Radio frequency device

Embodiments relate to xMR sensors having very high shape anisotropy. Embodiments also relate to novel structuring processes of xMR stacks to achieve very high shape anisotropies without chemically affecting the performance relevant magnetic field sensitive layer system while also providing comparatively uniform structure widths over a wafer, down to about 100 nm in embodiments. Embodiments can also provide xMR stacks having side walls of the performance relevant free layer system that are smooth and/or of a defined lateral geometry which is important for achieving a homogeneous magnetic behavior over the wafer.

XMR sensors with high shape anisotropy

Embodiments relate to a Radio Frequency IDentification (RFID)-tag, a Tire Pressure Monitoring System (TPMS) device, a tire, a receiver device and a method for providing information related to identification of a tire. The RFID-tag is configured to provide information related to the tire identification and it is configured to be powered by the TPMS device. The RFID-tag comprises a memory module configured to store the information related to the tire identification and a transmitter module configured to transmit the information related to the tire identification to a receiver device of a vehicle or a service station. The TPMS device comprises a coupling element configured to provide Radio Frequency power to the RFID-tag, for providing information related to tire identification.

RFID-tag, a TPMS device, a tire, a receiver device and a method for providing information related to identification of a tire

A limiting amplifier includes a multiplicity of cascaded amplifier stages for amplifying an input signal for the amplifier. A further amplifier stage is supplied with a reference signal. On the basis of an output signal from the further amplifier stage, a control signal for adjusting a gain of at least one of the cascaded amplifier stages is produced.

Limiting amplifiers

Embodiments relate to tire localization in tire pressure monitoring systems (TPMS). In embodiments, a TPMS includes a wheel unit and a control unit. Each wheel unit collects acceleration data and transmits that data to the control unit for processing. The control unit processes the data and, using additional data received from another vehicle system, for example an antilock braking system (ABS) or electronic stability control (ESC) system, correlates the data in order to localize each wheel unit to a particular wheel of the vehicle. Advantages include increased processing power at the control unit as compared to the wheel unit.

Tire localization systems and methods in tire pressure monitoring systems

The invention provides an amplifier arrangement which is of multistage design. The output transistor in the output stage has a coupling path between its control input and its controlled path. The coupling path comprises a series circuit comprising a Miller compensation capacitance and a resistance with a controllable resistance value. It is thus possible to ensure stable operation of the amplifier regardless of bias and load conditions while simultaneously reducing the quiescent current drawn.

Amplifier arrangement

A digital/analog converter apparatus (DAC) comprises, for the purpose of converting a digital input signal (D) into an analog output signal (A), a first unit (FF), two digital/analog converters (DACDAC) and a second unit (KK), which are connected successively in the stated order. From the digital input signal (D), digital intermediate signals (DD) which are within the analog output signal (A) is obtained through linear combination.

High-resolution digital-to-analog converter

An apparatus converts a digital value including &ldquo;a&rdquo; bits into an analog signal and has 2 D/A converters. Here, b is an integer number that is greater than 0. Each of the D/A converters is designed to convert a digital value having &ldquo;a&minus;b&rdquo; bits. The digital value that is supplied (for i&equals;1 . . . 2 ) to the ith D/A converter for the purpose of D/A conversion corresponds to the &ldquo;a&minus;b&rdquo; most significant bits in the sum of the digital value that will be converted by the apparatus and to i&minus;1. The output signal for the apparatus is the mean value for the output signals from the D/A converters. Such an apparatus can be produced such that it can be accommodated easily and efficiently on a semiconductor chip and, irrespective of the details of protocol implementation, permits a completely linear conversion of the digital value being converted into an analog signal.

Growing community of inventors

St. Margarethen, Austria

Ralf-Rainer Schledz