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公开(公告)号：US20230079355A1
公开(公告)日：2023-03-16
申请号：US17987280
申请日：2022-11-15
申请人： STMicroelectronics SA , STMicroelectronics, Inc. , STMicroelectronics (Research & Development) Limited
发明人： Darin K. Winterton , Donald Baxter , Andrew Hodgson , Gordon Lunn , Olivier Pothier , Kalyan-Kumar Vadlamudi-Reddy
IPC分类号： H04N5/232
摘要： A method includes dividing a field of view into a plurality of zones and sampling the field of view to generate a photon count for each zone of the plurality of zones, identifying a focal sector of the field of view and analyzing each zone to select a final focal object from a first prospective focal object and a second prospective focal object.
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公开(公告)号：US20220191402A1
公开(公告)日：2022-06-16
申请号：US17122667
申请日：2020-12-15
申请人： STMicroelectronics, Inc. , STMicroelectronics SA , STMicroelectronics (Research & Development) Limited
发明人： Darin K. Winterton , Donald Baxter , Andrew Hodgson , Gordon Lunn , Olivier Pothier , Kalyan-Kumar Vadlamudi-Reddy
摘要： A method includes dividing a field of view into a plurality of zones and sampling the field of view to generate a photon count for each zone of the plurality of zones, identifying a focal sector of the field of view and analyzing each zone to select a final focal object from a first prospective focal object and a second prospective focal object.
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公开(公告)号：US11528407B2
公开(公告)日：2022-12-13
申请号：US17122667
申请日：2020-12-15
申请人： STMicroelectronics, Inc. , STMicroelectronics SA , STMicroelectronics (Research & Development) Limited
发明人： Darin K. Winterton , Donald Baxter , Andrew Hodgson , Gordon Lunn , Olivier Pothier , Kalyan-Kumar Vadlamudi-Reddy
IPC分类号： H04N5/232
摘要： A method includes dividing a field of view into a plurality of zones and sampling the field of view to generate a photon count for each zone of the plurality of zones, identifying a focal sector of the field of view and analyzing each zone to select a final focal object from a first prospective focal object and a second prospective focal object.
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公开(公告)号：US20220196834A1
公开(公告)日：2022-06-23
申请号：US17554825
申请日：2021-12-17
申请人： STMicroelectronics SA , STMicroelectronics (Research & Development) Limited , STMicroelectronics, Inc.
IPC分类号： G01S17/08
摘要： A method can be used to detect the presence an object within a field of view of a time-of-flight sensor. A histogram generated by the time-of-flight sensor is obtained. The histogram includes a number of bins associating a number of detected photons to a given acquisition time. A portion of the bins of the histogram is transformed into points in a transformed domain that features a first area containing only points associated to bins representative of the presence of the object and a second area having only points associated to bins not representative of the presence of the object. The bins of the histogram representative of the presence of the object are identified from the points located in the first area.
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公开(公告)号：US20240015400A1
公开(公告)日：2024-01-11
申请号：US18470702
申请日：2023-09-20
申请人： STMicroelectronics SA , STMicroelectronics, Inc. , STMicroelectronics (Research & Development) Limited
发明人： Darin K. Winterton , Donald Baxter , Andrew Hodgson , Gordon Lunn , Olivier Pothier , Kalyan-Kumar Vadlamudi-Reddy
CPC分类号： H04N23/675 , H04N23/61 , H04N23/671
摘要： A method includes dividing a field of view into a plurality of zones and sampling the field of view to generate a photon count for each zone of the plurality of zones, identifying a focal sector of the field of view and analyzing each zone to select a final focal object from a first prospective focal object and a second prospective focal object.
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公开(公告)号：US11800224B2
公开(公告)日：2023-10-24
申请号：US17987280
申请日：2022-11-15
申请人： STMicroelectronics SA , STMicroelectronics, Inc. , STMicroelectronics (Research & Development) Limited
发明人： Darin K. Winterton , Donald Baxter , Andrew Hodgson , Gordon Lunn , Olivier Pothier , Kalyan-Kumar Vadlamudi-Reddy
CPC分类号： H04N23/675 , H04N23/61 , H04N23/671
摘要： A method includes dividing a field of view into a plurality of zones and sampling the field of view to generate a photon count for each zone of the plurality of zones, identifying a focal sector of the field of view and analyzing each zone to select a final focal object from a first prospective focal object and a second prospective focal object.
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公开(公告)号：US20200097752A1
公开(公告)日：2020-03-26
申请号：US16142544
申请日：2018-09-26
发明人： Francois De Salivet de Fouchecour , Stuart McLeod , Donald Baxter , Olivier Pothier , Thierry Lebihen
摘要： An embodiment device includes: a plurality of optical emitters configured to emit incident radiation within a field of view of the device; a plurality of optical detectors configured to receive reflected radiation and to generate a histogram based on the incident radiation and the reflected radiation, the histogram being indicative of a number of photon events detected by the plurality of optical detectors over a plurality of time bins, the plurality of time bins being indicative of a plurality of time differences between emission of the incident radiation and reception of the reflected radiation; and a processor configured to iteratively process the histogram by executing an expectation-maximization algorithm to detect a presence of objects located in the field of view of the device.
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公开(公告)号：US10796191B2
公开(公告)日：2020-10-06
申请号：US16142544
申请日：2018-09-26
发明人： Francois De Salivet de Fouchecour , Stuart McLeod , Donald Baxter , Olivier Pothier , Thierry Lebihen
摘要： An example device has optical emitters for emitting incident radiation within a field of view and optical detectors for receiving reflected radiation. Based on the incident radiation and the reflected radiation, a histogram indicative of a number of photon events that are detected by the optical detectors over time bins is generated. The time bins is indicative of time differences between emission of the incident radiation and reception of the reflected radiation. The device further includes; a processor programmed to iteratively process the histogram by executing an expectation-maximization algorithm to detect a presence of objects located in the field of view of the device.
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公开(公告)号：US20180253404A1
公开(公告)日：2018-09-06
申请号：US15886353
申请日：2018-02-01
发明人： John Kevin Moore , Sam Lee , Pascal Mellot , Donald Baxter , Stuart McLeod , Kenneth Dargan
CPC分类号： G06F17/18 , G01S7/4813 , G01S7/4863 , G01S7/4865 , G01S7/4876 , G01S7/497 , G01S17/10 , G06F11/0703
摘要： A method includes receiving a histogram output from a detector sensor, and calculating a median point of a pulse waveform within the histogram. The pulse waveform has an even probability distribution over at least one quantization step of the histogram around the median point. A corresponding apparatus can include a detector sensor and a co-processor coupled to the detector sensor.
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公开(公告)号：US20240028667A1
公开(公告)日：2024-01-25
申请号：US18466522
申请日：2023-09-13
发明人： John Kevin Moore , Sam Lee , Pascal Mellot , Donald Baxter , Stuart McLeod , Kenneth Dargan
IPC分类号： G06F17/18 , G01S7/4863 , G06F11/07 , G01S17/10 , G01S7/4865 , G01S7/487 , G01S7/497
CPC分类号： G06F17/18 , G01S7/4863 , G06F11/0703 , G01S17/10 , G01S7/4865 , G01S7/4876 , G01S7/497 , G01S7/4813
摘要： A method includes receiving a histogram output from a detector sensor, and calculating a median point of a pulse waveform within the histogram. The pulse waveform has an even probability distribution over at least one quantization step of the histogram around the median point. A corresponding apparatus can include a detector sensor and a co-processor coupled to the detector sensor.
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