Patents by Inventor Olaf Schrey
Olaf Schrey has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11536835Abstract: A laser measuring set for measuring a distance from an object includes a pulse laser for emitting a laser pulse at the beginning of a measuring cycle; an optical sensor having at least one detection unit for generating detection signals; a coincidence recognition stage for generating coincidence signals, wherein during the measuring cycle, one of the coincidence signals is generated each time the detection signals generated by the detection unit reach at least a preset coincidence depth within a coincidence time; a coincidence time presetting stage for presetting the coincidence time for the coincidence recognition stage, the coincidence time presetting stage being configured such that the coincidence time monotonically increases during the measuring cycle; and travel-time measuring set for determining the distance on the basis of a travel-time measurement of the coincidence signals.Type: GrantFiled: May 28, 2019Date of Patent: December 27, 2022Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Maik Beer, Olaf Schrey, Werner Brockherde, Bedrich Hosticka
-
Patent number: 11520296Abstract: Time-to-digital converter arrangement having a first and a second time-to-digital converters. The first one is configured to determine the existence or nonexistence of an event in a recurring first measurement window. The second one is configured to determine the existence or nonexistence of the event in a recurring second measurement window. A temporal relation of the second measurement window with respect to detecting the event is time-shifted by a first offset compared to a temporal relation of the first measurement window with respect to detecting the event.Type: GrantFiled: April 14, 2020Date of Patent: December 6, 2022Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FĂ–RDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Jan Haase, Olaf Schrey, Maik Beer
-
Publication number: 20220381882Abstract: A laser measuring apparatus for measuring distances is disclosed, including a pulse laser; a photon detection device with a group of detection units; an evaluation device; a time measuring device; and a control device, wherein the control device is configured such that a plurality of measurement cycles is performed during each of the measurement operations; that one of the laser pulses is emitted with the pulse laser at the beginning of each measurement cycle of the plurality of measurement cycles; that, by means of the time measuring device, during each measurement cycle, one of the time periods is measured for each of the coincidence signals being detected during the respective measurement cycle; that the time periods measured during several of the measurement cycles of one of the measurement operations by means of the time measuring device are used to generate the measurement value of the respective measurement operation; that an adjustment of a maximum value for an event number takes place that correspondType: ApplicationFiled: May 27, 2022Publication date: December 1, 2022Inventors: Olaf SCHREY, Andre BUCHNER, Jan HAASE, Christian NITTA, Moritz ESSIG
-
Patent number: 11460557Abstract: An apparatus for distance measurement, having one or several optical detector modules and a readout module is provided. The optical detector modules each have a plurality of optical detector elements having one or several optical detectors and a counter indicating a count value, the optical detector elements each being in an active state or an inactive state. Each optical detector module has a timer element configured to determine a current time value and configured to continuously update the current time value, and a memory element for storing a plurality of time values stored.Type: GrantFiled: August 14, 2019Date of Patent: October 4, 2022Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Maik Beer, Olaf Schrey, Christian Nitta
-
Patent number: 11067674Abstract: Described are a device for determining a distance to an object, having a transmitting device for emitting signals, a receiving device for receiving signals and for generating detection signals, an evaluating device for evaluating the detection signals of the receiving device, and a control device for controlling the evaluation of the detection signals, and a corresponding method. The receiving device has a plurality of receiving elements which generate, in case they receive a signal, a detection signal each. The evaluating device determines the distance to the object in accordance with the time-of-flight method and while considering coincidence events and uses that case in which a number of detection signals generated within a presettable coincidence time at least equals a presettable coincidence depth, as a coincidence events.Type: GrantFiled: February 14, 2018Date of Patent: July 20, 2021Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Olaf Schrey, Maik Beer, Werner Brockherde, Bedrich Hosticka, Alexander Schwinger, David Arutinov
-
Patent number: 11016184Abstract: The invention relates to a device for determining a distance from an object, including a transmission device for emitting several light pulses including a pulse duration, including a reception device for receiving signals and for generating detection signals, and including an evaluation device for evaluating the detection signals. The evaluation device determines, on the basis of a number of the light pulses emitted and on the basis of the detection signals, probability values of several time windows which each have a respective time period equaling the pulse duration which relate to probabilities for reception of a signal within one of the time windows, respectively. In addition, the evaluation device determines, in accordance with the time-of-flight method, a measure of the distance of the object on the basis of the probability values determined. In addition, the invention relates to a corresponding method.Type: GrantFiled: May 2, 2018Date of Patent: May 25, 2021Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Maik Beer, Olaf Schrey, Werner Brockherde, Alexander Schwinger, Bedrich Hosticka
-
Publication number: 20200333750Abstract: Time-to-digital converter arrangement having a first and a second time-to-digital converters. The first one is configured to determine the existence or nonexistence of an event in a recurring first measurement window. The second one is configured to determine the existence or nonexistence of the event in a recurring second measurement window. A temporal relation of the second measurement window with respect to detecting the event is time-shifted by a first offset compared to a temporal relation of the first measurement window with respect to detecting the event.Type: ApplicationFiled: April 14, 2020Publication date: October 22, 2020Inventors: Jan HAASE, Olaf SCHREY, Maik BEER
-
Publication number: 20200057150Abstract: An apparatus for distance measurement, having one or several optical detector modules and a readout module is provided. The optical detector modules each have a plurality of optical detector elements having one or several optical detectors and a counter indicating a count value, the optical detector elements each being in an active state or an inactive state. Each optical detector module has a timer element configured to determine a current time value and configured to continuously update the current time value, and a memory element for storing a plurality of time values stored.Type: ApplicationFiled: August 14, 2019Publication date: February 20, 2020Inventors: Maik Beer, Olaf Schrey, Christian Nitta
-
Publication number: 20190369248Abstract: A laser measuring set for measuring a distance from an object includes a pulse laser for emitting a laser pulse at the beginning of a measuring cycle; an optical sensor having at least one detection unit for generating detection signals; a coincidence recognition stage for generating coincidence signals, wherein during the measuring cycle, one of the coincidence signals is generated each time the detection signals generated by the detection unit reach at least a preset coincidence depth within a coincidence time; a coincidence time presetting stage for presetting the coincidence time for the coincidence recognition stage, the coincidence time presetting stage being configured such that the coincidence time monotonically increases during the measuring cycle; and travel-time measuring set for determining the distance on the basis of a travel-time measurement of the coincidence signals.Type: ApplicationFiled: May 28, 2019Publication date: December 5, 2019Inventors: Maik BEER, Olaf SCHREY, Werner BROCKHERDE, Bedrich HOSTICKA
-
Publication number: 20180321363Abstract: The invention relates to a device for determining a distance from an object, including a transmission device for emitting several light pulses including a pulse duration, including a reception device for receiving signals and for generating detection signals, and including an evaluation device for evaluating the detection signals. The evaluation device determines, on the basis of a number of the light pulses emitted and on the basis of the detection signals, probability values of several time windows which each have a respective time period equaling the pulse duration which relate to probabilities for reception of a signal within one of the time windows, respectively. In addition, the evaluation device determines, in accordance with the time-of-flight method, a measure of the distance of the object on the basis of the probability values determined. In addition, the invention relates to a corresponding method.Type: ApplicationFiled: May 2, 2018Publication date: November 8, 2018Inventors: Maik BEER, Olaf SCHREY, Werner BROCKHERDE, Alexander SCHWINGER, Bedrich HOSTICKA
-
Patent number: 10101155Abstract: The present invention describes an optical distance measuring device having a pulsed radiation source that is implemented to transmit, in a temporally contiguous radiation pulse period, a radiation pulse having a pulse duration tp that is shorter than the radiation pulse period, and to transmit no radiation pulse in a temporally contiguous dark period. Further, the optical distance measuring device includes a detector for detecting different amounts of radiation in two overlapping detection periods during the radiation pulse period to capture reflections of the radiation pulse at an object surface and a background radiation and/or in two overlapping detection periods during the dark period to capture background radiation. The optical distance measuring device further includes an evaluator determining a signal depending on a distance of the optical distance measuring device to an object based on the detected amount of radiation.Type: GrantFiled: July 15, 2016Date of Patent: October 16, 2018Assignee: Volkswagen AktiengesellschaftInventors: Olaf Schrey, Werner Brockherde, Bedrich Hosticka, Wiebke Ulfig
-
Publication number: 20180231646Abstract: Described are a device for determining a distance to an object, having a transmitting device for emitting signals, a receiving device for receiving signals and for generating detection signals, an evaluating device for evaluating the detection signals of the receiving device, and a control device for controlling the evaluation of the detection signals, and a corresponding method. The receiving device has a plurality of receiving elements which generate, in case they receive a signal, a detection signal each. The evaluating device determines the distance to the object in accordance with the time-of-flight method and while considering coincidence events and uses that case in which a number of detection signals generated within a presettable coincidence time at least equals a presettable coincidence depth, as a coincidence events.Type: ApplicationFiled: February 14, 2018Publication date: August 16, 2018Inventors: Olaf SCHREY, Maik BEER, Werner BROCKHERDE, Bedrich HOSTICKA, Alexander SCHWINGER, David ARUTINOV
-
Publication number: 20160327386Abstract: The present invention describes an optical distance measuring device having a pulsed radiation source that is implemented to transmit, in a temporally contiguous radiation pulse period, a radiation pulse having a pulse duration tp that is shorter than the radiation pulse period, and to transmit no radiation pulse in a temporally contiguous dark period. Further, the optical distance measuring device includes a detector for detecting different amounts of radiation in two overlapping detection periods during the radiation pulse period to capture reflections of the radiation pulse at an object surface and a background radiation and/or in two overlapping detection periods during the dark period to capture background radiation. The optical distance measuring device further includes an evaluator determining a signal depending on a distance of the optical distance measuring device to an object based on the detected amount of radiation.Type: ApplicationFiled: July 15, 2016Publication date: November 10, 2016Inventors: Olaf SCHREY, Werner BROCKHERDE, Bedrich HOSTICKA, Wiebke ULFIG
-
Patent number: 9395440Abstract: The present invention describes an optical distance measuring device having a pulsed radiation source that is implemented to transmit, in a temporally contiguous radiation pulse period, a radiation pulse having a pulse duration tp that is shorter than the radiation pulse period, and to transmit no radiation pulse in a temporally contiguous dark period. Further, the optical distance measuring device includes a detector for detecting different amounts of radiation in two overlapping detection periods during the radiation pulse period to capture reflections of the radiation pulse at an object surface and a background radiation and/or in two overlapping detection periods during the dark period to capture background radiation. The optical distance measuring device further includes an evaluator determining a signal depending on a distance of the optical distance measuring device to an object based on the detected amount of radiation.Type: GrantFiled: April 7, 2009Date of Patent: July 19, 2016Assignee: Volkswagen AktiengesellschaftInventors: Olaf Schrey, Werner Brockherde, Bedrich Hosticka, Wiebke Ulfig
-
Publication number: 20120268727Abstract: The present invention describes an optical distance measuring device having a pulsed radiation source that is implemented to transmit, in a temporally contiguous radiation pulse period, a radiation pulse having a pulse duration tp that is shorter than the radiation pulse period, and to transmit no radiation pulse in a temporally contiguous dark period. Further, the optical distance measuring device includes a detector for detecting different amounts of radiation in two overlapping detection periods during the radiation pulse period to capture reflections of the radiation pulse at an object surface and a background radiation and/or in two overlapping detection periods during the dark period to capture background radiation. The optical distance measuring device further includes an evaluator determining a signal depending on a distance of the optical distance measuring device to an object based on the detected amount of radiation.Type: ApplicationFiled: April 7, 2009Publication date: October 25, 2012Inventors: Olaf Schrey, Werner Brockherde, Bedrich Hosticka, Wiebke Ulfig
-
Patent number: 8085327Abstract: An image sensor includes a plurality of image elements configured to provide associated image element signals which are dependent on light intensities incident on the image elements. The image sensor includes an accumulation circuit with a plurality of charge storage elements, wherein the accumulation circuit is configured to change charges on the charge storage elements during a phase in dependence on image element signals of respectively associated image elements. The accumulation circuit is further configured to change an association between charge storage elements and associated image elements in successive phases, so that in operation, a charge on one of the charge storage elements depends on image element signals of plural image elements in a plurality of phases.Type: GrantFiled: July 2, 2008Date of Patent: December 27, 2011Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.Inventors: Olaf Schrey, Bedrich Hosticka, Werner Brockherde
-
Patent number: 7947939Abstract: The central idea of the present invention is that a readout result of an optical detection unit which is based on accumulating photocharges can be improved when the charge carriers accumulated on a photodiode capacitance can be transferred to a readout capacitance before being read out by a readout unit, and when the state of the readout capacitance can be read out in a non-destructive manner by the readout unit, so that a noise portion in the readout signal can be corrected by reading out the readout capacitance during charge accumulation and again reading out the readout capacitance after the end of charge accumulation. Additionally, it becomes possible by the transfer to the readout capacitance to vary the sensitivity of the optical detection device within broad limits and to record a sequence of successive light pulses, without having to reset a photodiode before recording every single light pulse.Type: GrantFiled: September 15, 2005Date of Patent: May 24, 2011Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Olaf Schrey, Bedrich Hosticka, Werner Brockherde
-
Publication number: 20090251579Abstract: An image sensor circuit includes a CMOS image sensor with light sensitive pixels arranged in rows and columns and a readout circuitry. The readout circuitry includes storage means with a CDS stage for storing signals read out from the pixels at two different time instants between two subsequent reset phases and an analogue-to-digital converter, wherein the CDS stage comprises a subtracting means for subtracting the stored signals from each other and wherein the result of the subtraction is fed to the analogue-to-digital converter as a differential signal.Type: ApplicationFiled: May 22, 2007Publication date: October 8, 2009Inventors: Olaf Schrey, Werner Brockherde, Bedrich Hosticka
-
Patent number: 7495202Abstract: The central idea of the present invention is that the resetting of the energy store associated with the receiver prior to every detection interval and/or prior to every exposure period, during which the energy stored in the energy store is to be changed in accordance with the output signal of the receiver so as to use the state of the energy store following the reception interval as information about the object may be avoided by setting the sensitivity of the receiver, which determines the level of the output signal at a specified electromagnetic radiation, higher in at least one instance, and lower in at least one instance between two resetting events, or by varying the sensitivity. The noise contribution provided by the resetting operations is hereby avoided, which is why the benefit of the accumulation and/or integration may be exploited across several reception intervals without this noise contribution.Type: GrantFiled: March 25, 2003Date of Patent: February 24, 2009Assignee: Thomson LicensingInventors: Olaf Schrey, Ralf Jeremias, Werner Brockherde, Bedrich Hosticka
-
Publication number: 20090009645Abstract: An image sensor includes a plurality of image elements configured to provide associated image element signals which are dependent on light intensities incident on the image elements. The image sensor includes an accumulation circuit with a plurality of charge storage elements, wherein the accumulation circuit is configured to change charges on the charge storage elements during a phase in dependence on image element signals of respectively associated image elements. The accumulation circuit is further configured to change an association between charge storage elements and associated image elements in successive phases, so that in operation, a charge on one of the charge storage elements depends on image element signals of plural image elements in a plurality of phases.Type: ApplicationFiled: July 2, 2008Publication date: January 8, 2009Inventors: Olaf Schrey, Bedrich Hosticka, Werner Brockherde