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: 11536835
    Abstract: 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: Grant
    Filed: May 28, 2019
    Date of Patent: December 27, 2022
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Maik Beer, Olaf Schrey, Werner Brockherde, Bedrich Hosticka
  • Patent number: 11520296
    Abstract: 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: Grant
    Filed: April 14, 2020
    Date of Patent: December 6, 2022
    Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FĂ–RDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
    Inventors: Jan Haase, Olaf Schrey, Maik Beer
  • Publication number: 20220381882
    Abstract: 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 correspond
    Type: Application
    Filed: May 27, 2022
    Publication date: December 1, 2022
    Inventors: Olaf SCHREY, Andre BUCHNER, Jan HAASE, Christian NITTA, Moritz ESSIG
  • Patent number: 11460557
    Abstract: 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: Grant
    Filed: August 14, 2019
    Date of Patent: October 4, 2022
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Maik Beer, Olaf Schrey, Christian Nitta
  • Patent number: 11067674
    Abstract: 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: Grant
    Filed: February 14, 2018
    Date of Patent: July 20, 2021
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Olaf Schrey, Maik Beer, Werner Brockherde, Bedrich Hosticka, Alexander Schwinger, David Arutinov
  • Patent number: 11016184
    Abstract: 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: Grant
    Filed: May 2, 2018
    Date of Patent: May 25, 2021
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Maik Beer, Olaf Schrey, Werner Brockherde, Alexander Schwinger, Bedrich Hosticka
  • Publication number: 20200333750
    Abstract: 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: Application
    Filed: April 14, 2020
    Publication date: October 22, 2020
    Inventors: Jan HAASE, Olaf SCHREY, Maik BEER
  • Publication number: 20200057150
    Abstract: 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: Application
    Filed: August 14, 2019
    Publication date: February 20, 2020
    Inventors: Maik Beer, Olaf Schrey, Christian Nitta
  • Publication number: 20190369248
    Abstract: 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: Application
    Filed: May 28, 2019
    Publication date: December 5, 2019
    Inventors: Maik BEER, Olaf SCHREY, Werner BROCKHERDE, Bedrich HOSTICKA
  • Publication number: 20180321363
    Abstract: 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: Application
    Filed: May 2, 2018
    Publication date: November 8, 2018
    Inventors: Maik BEER, Olaf SCHREY, Werner BROCKHERDE, Alexander SCHWINGER, Bedrich HOSTICKA
  • Patent number: 10101155
    Abstract: 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: Grant
    Filed: July 15, 2016
    Date of Patent: October 16, 2018
    Assignee: Volkswagen Aktiengesellschaft
    Inventors: Olaf Schrey, Werner Brockherde, Bedrich Hosticka, Wiebke Ulfig
  • Publication number: 20180231646
    Abstract: 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: Application
    Filed: February 14, 2018
    Publication date: August 16, 2018
    Inventors: Olaf SCHREY, Maik BEER, Werner BROCKHERDE, Bedrich HOSTICKA, Alexander SCHWINGER, David ARUTINOV
  • Publication number: 20160327386
    Abstract: 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: Application
    Filed: July 15, 2016
    Publication date: November 10, 2016
    Inventors: Olaf SCHREY, Werner BROCKHERDE, Bedrich HOSTICKA, Wiebke ULFIG
  • Patent number: 9395440
    Abstract: 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: Grant
    Filed: April 7, 2009
    Date of Patent: July 19, 2016
    Assignee: Volkswagen Aktiengesellschaft
    Inventors: Olaf Schrey, Werner Brockherde, Bedrich Hosticka, Wiebke Ulfig
  • Publication number: 20120268727
    Abstract: 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: Application
    Filed: April 7, 2009
    Publication date: October 25, 2012
    Inventors: Olaf Schrey, Werner Brockherde, Bedrich Hosticka, Wiebke Ulfig
  • Patent number: 8085327
    Abstract: 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: Grant
    Filed: July 2, 2008
    Date of Patent: December 27, 2011
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
    Inventors: Olaf Schrey, Bedrich Hosticka, Werner Brockherde
  • Patent number: 7947939
    Abstract: 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: Grant
    Filed: September 15, 2005
    Date of Patent: May 24, 2011
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Olaf Schrey, Bedrich Hosticka, Werner Brockherde
  • Publication number: 20090251579
    Abstract: 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: Application
    Filed: May 22, 2007
    Publication date: October 8, 2009
    Inventors: Olaf Schrey, Werner Brockherde, Bedrich Hosticka
  • Patent number: 7495202
    Abstract: 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: Grant
    Filed: March 25, 2003
    Date of Patent: February 24, 2009
    Assignee: Thomson Licensing
    Inventors: Olaf Schrey, Ralf Jeremias, Werner Brockherde, Bedrich Hosticka
  • Publication number: 20090009645
    Abstract: 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: Application
    Filed: July 2, 2008
    Publication date: January 8, 2009
    Inventors: Olaf Schrey, Bedrich Hosticka, Werner Brockherde