Patent application number | Description | Published |
20080239280 | Method and Device for 3D Imaging - “A method for 3D imaging of an actively illuminated target region includes emitting intensity-modulated light at a variable modulation frequency into the target region, the emitted light is scattered/reflected in the target region depending on the optical properties of the objects or beings present therein, a scattered and/or reflected fraction of the light is detected during an integration time interval by phase-sensitive integration in each pixel of an imaging sensor, the modulation phase between the emitted and the detected light is determined and spatially resolved, and distance information is calculated based on the spatially resolved modulation phase and an average frequency of the modulation frequency.” | 10-02-2008 |
20080278287 | Rfid Transceiver Unit - An RFID transceiver unit ( | 11-13-2008 |
20080319616 | Seat Sensor System - A seat sensor system comprises at least one seat sensor associated to a seat for sensing a status related to a seat occupancy and for generating an output signal indicative of said status and a control unit for communicating with said at least one seat sensor. According to the invention at least one transmitter is associated with said seat, said transmitter being coupled to said at least one seat sensor, said transmitter for transmitting a data signal indicative of said output signal; and at least one receiver is coupled to said control unit, said receiver for wirelessly receiving said data signal) from said transmitter. | 12-25-2008 |
20090135404 | METHOD FOR OPERATING A TIME-OF-FLIGHT IMAGER PIXEL - A time-of-flight imager pixel has a light-sensitive region, a first and a second integration gate associated with the light-sensitive region, a first and a second sense node, a first output gate arranged between the first integration gate and the first sense node and a second output gate arranged between the second integration gate and the second sense node, a method for operating such a pixel includes | 05-28-2009 |
20100045966 | METHOD AND SYSTEM FOR ACQUIRING A 3-D IMAGE OF A SCENE - For acquiring a 3-D image of a scene, the scene is illuminated with modulated light emitted by an illumination unit and imaged onto an array of lock-in pixel sensor cells, which detect the previously emitted light after it has been scattered or reflected by an object or a living being in the scene. One determines the modulation phase of the light detected at the lock-in pixel sensor cells and provides a reference modulation phase that stands in a known relationship with the modulation phase of the light at the time of the emission. Based upon the reference modulation phase and the modulation phase of the light detected at the lock-in pixel sensor cells one then calculates depth information on the scene. The modulated light is emitted by a plurality of individual light emitting devices of the illumination unit, each of the light emitting devices emitting a part of the modulated light, and the reference modulation phase is provided as an average of the modulation phases of the parts of modulated light emitted by the light emitting devices. | 02-25-2010 |
20100277186 | METHOD AND SYSTEM FOR DETECTING AN OCCUPANCY STATE OF A VEHICLE SEAT - In an occupant detection system, which comprises an electrode arrangement for being placed into the seat of an automotive vehicle, the electrode arrangement including an antenna electrode for emitting an electric field into a detection region above the vehicle seat, and an evaluation circuit operatively connected to the antenna electrode, the evaluation circuit is configured and arranged so as to measure a capacitance influenceable by an occupying item in the detection region through interaction of the occupying item with the electric field. The evaluation circuit is further configured and arranged so as to determine fluctuations of the measured capacitance; analyse a frequency spectrum of the fluctuations; and derive an occupancy state of the vehicle seat based on both the measured capacitance and the frequency spectrum. | 11-04-2010 |
20100295563 | METHOD AND SYSTEM FOR DETECTING AN OCCUPANT IN A VEHICLE SEAT - An occupant detection system comprises an electrode arrangement for placement into a seat of an automotive vehicle and an evaluation circuit operatively connected to the electrode arrangement. The latter includes a first electrode for emitting an electric field into a detection region above the vehicle seat, a second electrode and an electric insulator layer sandwiched between the first and second electrodes. When the electrode arrangement is in place in the seat, the first electrode forms with vehicle ground a first capacitor having a first capacitance, which is influenceable by an occupying item in the detection region through interaction of the occupying item with the electric field, the first electrode forms with the second electrode a second capacitor having a second capacitance and the second electrode forms with at least one of vehicle ground and a third electrode a third capacitor having a third capacitance. As a first indicator of the seat occupancy state, a measure of the first capacitance is determined while the first electrode is caused to emit an electric field into said detection region and the second electrode is operated as a driven shield for the first electrode. The fluctuations of at least one of the first, second and third capacitances are measured and the frequency spectrum of the measured fluctuations is analysed, which yields a second indicator of the occupancy state. The derivation of the occupancy state of the seat is then based on both the first indicator and the second indicator. | 11-25-2010 |
20110018506 | H-BRIDGE CIRCUIT AND METHOD FOR OPERATING SUCH CIRCUIT - A H-bridge circuit for supplying a load with a defined current comprises a first transistor for coupling a first terminal of the load to a positive potential of a power source; a second transistor for coupling the first terminal of the load to a negative potential of the power source; a third transistor for coupling a second terminal of the load to the positive potential of the power source; and a fourth transistor for coupling the second terminal of the load to the negative potential of the power source. The circuit further comprises a current sensing circuitry for sensing a current flowing through the load and for generating a voltage signal representative of the current, and a control circuit for individually controlling the operation of the first, second, third and fourth transistors by respective first, second, third and fourth control signals. The control circuit is configured for operating two transistors of the first, second, third and fourth transistors in switching mode and the remaining two transistors in linear mode. Each of the linear mode transistors has a feedback circuit associated therewith, which is operatively coupled to the control circuit and to the current sensing circuitry. Each such feedback circuit comprises a resistive element coupled between the gate/base of the associated linear mode transistor and the power source. The feedback circuits comprise a feedback transistor coupled between the gate/base of the associated linear mode transistor and the current sensing circuitry, the base/gate of the feedback transistor being connected to the control circuit for receiving the control signal for the associated linear mode transistor. The feedback transistor controls the voltage on the gate/base of the associated linear mode transistor so that a difference between the voltage signal of said current sensing circuitry and the respective control signal from said control circuit is maintained at a constant level | 01-27-2011 |
20110180343 | OCCUPANT CLASSIFICATION SYSTEM - An occupant classification system for a vehicle comprises a radio-frequency (RF) transmitter unit, which includes a transmission RF antenna and an RF generator operatively connected to the transmission RF antenna. The RF generator and the transmission RF antenna are configured for generating radio waves at a certain fixed RF frequency in the Very High Frequency (VHF) range or the Ultra High Frequency (UHF) range. During operation of the RF transmitter unit, the generated radio waves propagate from the transmission RF antenna. The occupant classification system further comprises an RF detector for detecting, at the fixed RF frequency, an influence of an occupant on the radio waves propagating from the transmission RF antenna. | 07-28-2011 |
20130015863 | COMBINED SEAT HEATER AND CAPACITIVE OCCUPANCY SENSORAANM Lamesch; LaurentAACI LamadelaineAACO LUAAGP Lamesch; Laurent Lamadelaine LUAANM Schoos; AloyseAACI BertrangeAACO LUAAGP Schoos; Aloyse Bertrange LU - A combined seat heater and capacitive occupancy sensor comprises a heating element ( | 01-17-2013 |
20130020305 | SEAT HEATER AND CAPACITIVE OCCUPANCY SENSOR COMBINATION - A combined seat heater and capacitive occupancy sensor comprises a heater network and a capacitive sensing network. The heater network includes a heating element ( | 01-24-2013 |
20130069673 | COMBINED HEATING AND CAPACITIVE SEAT OCCUPANT SENSING SYSTEM - A combined heating and capacitive seat occupant sensing system comprises a common mode choke configured so as to satisfy at least one of a plurality of conditions, which is taken into account by a decision unit of the system in such a way that an influence of the common mode choke on the decision is compensated. | 03-21-2013 |
20130270874 | SEAT HEATER USABLE AS ANTENNA ELECTRODE - A seat heater, e.g. for a vehicle seat, comprises a heating element ( | 10-17-2013 |