Infineon Technologies Ag

Michael Staber

Christian Fleischhacker

Hubert Weinberger

Francesco Labate

Andreas Wiesbauer

Dietmar Straeussnigg

Christian Jenkner

Elmar Bach

Alessandro Fulli

Patrizia Greco

Boaz Porat

Peter Pessl

Thomas Pötscher

Christian Schranz

Jörg Hauptmann

Günter Koder

Paola Demartini

Kwan Siong Kenneth Choong

Hubert Weingerger

A method includes post processing a plurality of temperature sensors grouped into a plurality of sets. For each set of the plurality of sets, a post-processing system coupled to corresponding temperature sensors receives a plurality output signals generated by the corresponding temperature sensors. For each set of the plurality of sets, the post-processing system computes values representing proportional to absolute temperature (PTAT) voltages and values representing internal reference voltages based on output signals generated by the corresponding temperature sensors. For each set of the plurality of sets, the post-processing system computes an average of the values representing the PTAT voltages and relative PTAT voltage variation coefficients. For each set of the plurality of sets, the post-processing system computes values representing corrected PTAT voltages using the relative PTAT voltage variation coefficients.

System and method for temperature sensing

In order to carry out an equidistant data transfer between clock domains having different clock rates, a combination of a counter () and a finite state machine () is proposed. Said counter () continuously counts off the clock cycles of the faster clock (CLK, while the finite state machine () monitors the clock edges of the slower clock (CLK) and an enabling signal (EN) for the data transfer with the faster clock (CLK) is produced according to the count of the counter ().

Method and circuit for transmitting data between systems having different clock speeds

A device and method are disclosed, whereby the normally complicated and difficult frequency determination is achieved by simply arranged and executed measures, namely by means of larger, smaller and/or equal comparisons and a counting of certain events. The invention further relates to arrangements whereby the noise signal level, or the influence thereof on the verification to be carried out is reduced.

Device and method for checking whether a signal with a predetermined frequency is being received

An xDSL data transfer system for data transfer includes at least one xDSL user modem connected via a data transfer medium to a corresponding xDSL modem within a central office, in which the xDSL user modem generates a pulse length modulated wake-up signal for switching the corresponding xDSL modem within the central office from a sleep mode to an operation mode.

System and method for establishing an xdsl data transfer link

An adjustable filter, particularly for use as an antialiasing filter in digital telecommunications networks, includes adjustable capacitors which determine frequency response for the purpose of accurate alignment with a particular cut-off frequency. The active filter includes, in line with the invention, a control device with a measuring device for ascertaining the actual cut-off frequency of the filter. On the basis of the ascertained actual cut-off frequency of the filter and the information about the nominal cut-off frequency which is to be set, an adjustment parameter for the adjustable capacitor is selected from a memory arrangement. This adjustment parameter is used to adjust the adjustable capacitor such that the desired nominal cut-off frequency is obtained and, at the same time, the alignment is performed to achieve the nominal cut-off frequency with sufficient accuracy.

Method and apparatus for adjusting an active filter

Tone signal detection circuit for a receiving circuit for detecting at least one tone signal of predetermined tone signal frequency (f) which is contained in a received analog input signal, comprising a reference signal generator () for generating an analog converter reference signal which consists of a reference DC (V) and a periodic reference AC (V) having a variable fundamental frequency (f), which is superimposed on the reference DC, an analog/digital converter () for converting the analog input signal into a digital data stream in dependence on the analog converter reference signal (V); and comprising a digital control circuit () which adjusts the variable fundamental frequency (f) of the reference signal (V) generated by the reference signal generator () in accordance with the predetermined tone signal frequencies (f) of the tone signals to be detected and evaluates the digital data stream output by the digital analog/digital converter () for detecting a data pattern corresponding to the tone signal.

Tone signal detection circuit for detecting tone signals

The invention relates to an arrangement for converting a binary input signal corresponding to an n-bit thermometer code into a binary output code different therefrom, The invention furthermore relates to a conversion method.

Conversion arrangement and method for converting a thermometer code

A method of using a capacitively coupled interface to increase the integrity of digital signals being transmitted across the interface includes transmitting signals between a first electronic circuit and a second electronic circuit using a capacitively coupled interface, and protecting the integrity of the signals by using a protocol. The protocol preferably includes: Transmitting a signal from the first electronic circuit to the second electronic circuit on the capacitively coupled interface. After the second electronic circuit receives the signal from the first electronic circuit, transmitting a unique synchronization sequence from the second electronic circuit to the first electronic circuit on the capacitively coupled interface. Constructing a status signal that contains information concerning a status of the first electronic circuit. After the first electronic circuit receives the unique synchronization sequence, transmitting the status signal and a data signal from the first electronic circuit for reception by the second electronic circuit on the capacitively coupled interface. Determining if the received status signal corresponds to a predetermined status signal, and if the received status signal corresponds to the predetermined status signal, determining that the received data signal is valid.

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Villach, Austria

Michael Staber