Patent application number | Description | Published |
20090252210 | CIRCUIT ARRANGEMENT, APPARATUS AND PROCESS FOR THE SERIAL SENDING OF DATA VIA A CONNECTION CONTACT - The invention relates to an integrated circuit arrangement with connection contacts for the serial exchange of data and/or signals with external components and apparatuses and with a control apparatus and/or a serial interface for the clocked receiving of data by means of a signal voltage on such a connection contact, which voltage is modulated between at least one low, one middle and one high voltage state. The control apparatus and/or the interface are designed in such a manner that data is sent in a sending mode via the connection contact in that the switching apparatus, after having received a slope changing in particular from the middle voltage state into in particular the higher or the lower voltage state, pulls the voltage state into the in particular opposite lower or higher voltage state. Furthermore, the invention relates to an apparatus and a process for operating such a circuit arrangement. | 10-08-2009 |
20110234813 | SENSOR MODULE AND METHOD FOR MONITORING THE FUNCTION THEREOF - In a method for monitoring the function of a sensor module, which has a sensor, by means of the sensor a measurement signal for a physical quantity to be determined is generated and applied to an output terminal in an unchanged form or in processed form—after at least one linear signal processing step and/or at least one nonlinear signal processing step are performed. In addition, a test signal is generated whose spectrum lies substantially outside the spectrum of the measurement signal. The test signal is supplied at a place in the sensor from which it reaches the output terminal in unchanged form or in processed form—after the performance of the at least one linear signal processing step—only in the case of a functional sensor. An output signal present at the output terminal is compared with the test signal and a diagnosis signal is generated, which indicates whether the test signal is present at the output terminal. The test signal is filtered out of the output signal and the remaining signal is applied as the measurement signal at a measurement signal output of the sensor module. | 09-29-2011 |
20140046625 | METHOD FOR DETERMINING AN ANGLE OF ROTATION - A method for determining an angle of rotation between a sensor array and a magnetic field of a magnet, whereby the magnetic field is formed substantially parallel and perpendicular to the rotation axis, and the magnet is arranged rotationally symmetric relative to the rotation axis. A first measurement signal and a second measurement signal are generated by the two subsensors of the first magnetic field sensor unit, and the first measurement signal is assigned a first relation and the second measurement signal is assigned a second relation. A third measurement signal and a fourth measurement signal are generated by the two subsensors of the second magnetic field sensor unit, whereby the third measurement signal is assigned a third relation and the fourth measurement signal is assigned a fourth relation. The angle of rotation is then determined. | 02-13-2014 |
Patent application number | Description | Published |
20090027075 | System And Method of Digitally Testing An Analog Driver Circuit - A circuit and method of testing an analog driver circuit using digital scan-based test methodologies. The circuit of the present invention comprises a control circuit for generating signals in response to a test enable signal, a differential driver circuit for receiving a differential input signal, amplifying the differential input signal and transmitting a differential output signal in response to the differential input signal and the signals generated by the control circuit, a programmable termination impedance circuit for generating a differential termination impedance at the output node of the differential driver circuit in response the signals generated by the control circuit, and a differential receiver circuit for receiving the differential output from the differential driver circuit, convert the differential output signal to a single ended signal and transmitting the single ended signal, all in response to the test enable signal. The method of the present invention comprises digitally testing the differential driver circuit by activating a test enable signal, skewing the differential output termination impedance in response to the test enable signal, adjusting a voltage offset of the differential receiver circuit in response to the test enable signal, selecting a power level for the differential driver circuit in response to the test enable signal, enabling a decoder in response to the test enable signal, wherein the decoder activates only one segment of the differential driver circuit during any one test sequence, activating one of the segments for testing, stimulating the differential driver circuit with digital test patterns, receiving an output of the differential driver circuit by the differential receiver circuit, converting the received differential driver output to a single-ended signal, observing the single-ended signal; and deactivating the test enable signal. | 01-29-2009 |
20140376603 | TESTING A DECISION FEEDBACK EQUALIZER ('DFE') - Testing a Decision Feedback Equalizer (‘DFE’), the DFE including a summing amplifier operatively coupled to a plurality of latches and an input signal line for receiving a data signal, including: preventing a differential data signal from being received by the summing amplifier; and iteratively for each tap to be tested: setting a tap coefficient for each tap to zero; setting an output of the plurality of latches to a predetermined value; setting a tap coefficient for the tap to be tested to a full scale value; and determining whether a resultant output signal from the DFE matches a predetermined expected output signal. | 12-25-2014 |
20150131707 | TESTING A DECISION FEEDBACK EQUALIZER ('DFE') - Testing a Decision Feedback Equalizer (‘DFE’), the DFE including a summing amplifier operatively coupled to a plurality of latches and an input signal line for receiving a data signal, including: preventing a differential data signal from being received by the summing amplifier; and iteratively for each tap to be tested: setting a tap coefficient for each tap to zero; setting an output of the plurality of latches to a predetermined value; setting a tap coefficient for the tap to be tested to a full scale value; and determining whether a resultant output signal from the DFE matches a predetermined expected output signal. | 05-14-2015 |
20150145710 | TESTING A DIGITAL-TO-ANALOG CONVERTER - Testing a digital-to-analog converter (DAC), where the test is carried out iteratively for a plurality of digital test signal values, includes: providing the digital test signal to a DAC under test and to a servo; providing, by the DAC under test to a summer, an analog test signal, including converting the digital test signal to the analog test signal; providing, by the summer to an observation latch, a summed signal, including summing the analog test signal and an analog offset signal, the analog offset signal received from a second DAC; providing, by the observation latch to the servo, a sample of the summed signal; providing, by the servo to the second DAC in dependence upon the sample and the digital test signal, a digital offset signal, where the second DAC converts the digital offset signal to the analog offset signal; and storing, as a digital observation, the digital offset signal. | 05-28-2015 |