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公开(公告)号：US11962900B2
公开(公告)日：2024-04-16
申请号：US16998567
申请日：2020-08-20
发明人： Neale Dutton , Stuart McLeod , Bruce Rae
IPC分类号： H04N23/67 , G01S7/481 , G01S7/4863 , G01S17/86 , G01S17/894 , H01S5/183 , H04M1/02 , H04N23/90 , H04N25/443
CPC分类号： H04N23/67 , G01S7/4815 , G01S7/4863 , G01S17/86 , G01S17/894 , H04M1/0202 , H04N23/90 , H04N25/443 , H01S5/183 , H04M2250/12 , H04N23/671
摘要： In some embodiments, a ToF sensor includes an illumination source module, a transmitter lens module, a receiver lens module, and an integrated circuit that includes a ToF imaging array. The ToF imaging array includes a plurality of SPADs and a plurality of ToF channels coupled to the plurality of SPADs. In a first mode, the ToF imaging array is configured to select a first group of SPADs corresponding to a first FoV. In a second mode, the ToF imaging array is configured to select a second group of SPADs corresponding to a second FoV different than the first FoV.
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公开(公告)号：US11885915B2
公开(公告)日：2024-01-30
申请号：US16834347
申请日：2020-03-30
发明人： Neale Dutton , John Kevin Moore
IPC分类号： G01S7/4865 , G01S17/10 , G01S17/89
CPC分类号： G01S7/4865 , G01S17/10 , G01S17/89
摘要： In an embodiment, a method includes: receiving a first plurality of digital codes from a time-to-digital converter (TDC); TDC; generating a coarse histogram from the first plurality of digital codes; detecting a peak coarse bin from the plurality of coarse bins; after receiving the first plurality of digital codes, receiving a second plurality of digital codes from the TDC; and generating a fine histogram from the second plurality of digital codes based on the detected peak coarse bin, where a fine histogram depth range is narrower than a coarse histogram depth range, where a lowest fine histogram depth is lower or equal to a lowest coarse peak depth, and where a highest fine histogram depth is higher or equal to a highest coarse peak depth.
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公开(公告)号：US11095289B2
公开(公告)日：2021-08-17
申请号：US15588127
申请日：2017-05-05
发明人： Bruce Rae , Neale Dutton
IPC分类号： G01C3/08 , H03K19/17764 , H03K19/20 , H04N5/225
摘要： An electronic device includes at least one photodetection block, where the at least one photodetection block includes a plurality of macropixels arranged into an array. Each macropixel includes an array of photodiodes, with logic circuitry coupled to outputs of the array of photodiodes and configured to generate a detection signal as a function of logically combining the outputs of the array of photodiodes. Each macropixel has associated therewith selection circuitry configured to selectively pass the detection signal to output combining logic or to output combining logic of at least one neighboring macropixel of the plurality thereof. The output combining logic has inputs coupled to the selection circuitry and to the selection circuitry of the at least one neighboring macropixel, and is configured to generate an output detection signal as a function of logically combining outputs of the selection circuitry and the selection circuitry of the at least one neighboring macropixel.
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公开(公告)号：US10996323B2
公开(公告)日：2021-05-04
申请号：US15902609
申请日：2018-02-22
IPC分类号： G01C3/08 , G01S7/4863 , G01S17/14 , G01S17/894 , G01S17/931
摘要： A time-of-flight (TOF) imaging system includes illumination circuitry, such as a laser, one or more sensors, such as SPAD arrays, and image processing circuitry. The illumination circuitry illuminates one or more objects in an environment around the TOF imaging system. The sensors generate an image data stream based on reflections from the one or more illuminated objects, and possibly based on reflections from one or more reflectors. The image processing circuitry generates counts associated with distances based on the image data stream and possibly a reflection data stream and stores the generated counts in a histogram using a plurality of bins. Each of the plurality of bins stores counts associated with a respective distance range. A size of a bin in the plurality of bins is a function of the respective distance range, and may be based on a logarithmic function of the distance associated with the bin.
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公开(公告)号：US10785400B2
公开(公告)日：2020-09-22
申请号：US15728213
申请日：2017-10-09
发明人： Neale Dutton , Stuart McLeod , Bruce Rae
IPC分类号： G01C3/08 , H04N5/232 , H04N5/247 , H04M1/02 , G01S7/4863 , G01S17/89 , G01S7/481 , H04N5/345 , G01S17/86 , H01S5/183
摘要： In some embodiments, a ToF sensor includes an illumination source module, a transmitter lens module, a receiver lens module, and an integrated circuit that includes a ToF imaging array. The ToF imaging array includes a plurality of SPADs and a plurality of ToF channels coupled to the plurality of SPADs. In a first mode, the ToF imaging array is configured to select a first group of SPADs corresponding to a first FoV. In a second mode, the ToF imaging array is configured to select a second group of SPADs corresponding to a second FoV different than the first FoV.
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公开(公告)号：US20200166612A1
公开(公告)日：2020-05-28
申请号：US16694386
申请日：2019-11-25
摘要： A method can be used for controlling pixel scanning within a range detector. A spatially controllable point light source generates a first series of light source pulses associated with a first spatial direction. The first series of light source pulses are generated during a first time period. The spatially controllable point light source generates a second series of light source pulses associated with a second spatial direction. The second series of light source pulses are generated during a second time period that overlaps with the first time period so that the second series of light source pulses are started during the first series of light source pulses.
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公开(公告)号：US20180323788A1
公开(公告)日：2018-11-08
申请号：US15588127
申请日：2017-05-05
发明人： Bruce Rae , Neale Dutton
IPC分类号： H03K19/177 , H03K19/20 , H04N7/18 , G06T7/70 , H04N5/225
CPC分类号： H03K19/17764 , G06T7/70 , H03K19/20 , H04N5/2252 , H04N5/2256 , H04N7/183
摘要： An electronic device includes at least one photodetection block, where the at least one photodetection block includes a plurality of macropixels arranged into an array. Each macropixel includes an array of photodiodes, with logic circuitry coupled to outputs of the array of photodiodes and configured to generate a detection signal as a function of logically combining the outputs of the array of photodiodes. Each macropixel has associated therewith selection circuitry configured to selectively pass the detection signal to output combining logic or to output combining logic of at least one neighboring macropixel of the plurality thereof. The output combining logic has inputs coupled to the selection circuitry and to the selection circuitry of the at least one neighboring macropixel, and is configured to generate an output detection signal as a function of logically combining outputs of the selection circuitry and the selection circuitry of the at least one neighboring macropixel.
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公开(公告)号：US10097264B2
公开(公告)日：2018-10-09
申请号：US15609931
申请日：2017-05-31
IPC分类号： H04B10/00 , H04B10/11 , H04B10/50 , H04B10/66 , H04B10/114 , H04B10/116
摘要： A single photon avalanche diode based apparatus comprising: at least one array of single photon avalanche diodes configured to receive light generated externally to the apparatus, wherein the at least one array is configurable to be sub-divided into a plurality of sub-arrays, each sub-array able to receive a separate free space light communication channel; and a receiver configured to receive the output from each sub-array and output data based on the received plurality of sub-array separate free space light communication channel.
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公开(公告)号：US09313434B2
公开(公告)日：2016-04-12
申请号：US14066853
申请日：2013-10-30
申请人： STMicroelectronics (Research & Development) Limited , The University Court of the University of Edinburgh
IPC分类号： H01L31/107 , H04N5/3745 , G01S17/89 , G01S7/486
CPC分类号： H04N5/3745 , G01S7/4863 , G01S17/89
摘要： A pixel circuit includes a single photon avalanche diode (SPAD) and a measurement circuit including a capacitance. The circuit is operable to discharge a known portion of the charge on the capacitance upon each detection of a SPAD event within a time period, such that the charge remaining on the capacitance at the end of the time period corresponds to the number of SPAD events detected within the time period. A time resolved imaging apparatus includes an array of such pixel circuits. A method of counting photon detection includes sensing photons with a SPAD device and discharging a known portion of the charge on a capacitance upon each detection of a SPAD event within a time period.
摘要翻译： 像素电路包括单光子雪崩二极管（SPAD）和包括电容的测量电路。 该电路可操作以在每个在一段时间内检测到SPAD事件之后对电容的已知部分进行放电，使得在该时间段结束时剩余在电容上的电荷对应于检测到的SPAD事件的数量 在这段时间内。 时间分辨成像装置包括这种像素电路的阵列。 计数光子检测的方法包括在SPAD装置中检测光子并在每个在一段时间内检测到SPAD事件之后，将电荷的已知部分在电容上放电。
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10.发明申请公开(公告)号：US20140124653A1
公开(公告)日：2014-05-08
申请号：US14066853
申请日：2013-10-30
申请人： The University Court of the University of Edinburgh , STMicroelectronics (Research & Development) Limited
IPC分类号： H01L27/146
CPC分类号： H04N5/3745 , G01S7/4863 , G01S17/89
摘要： A pixel circuit includes a single photon avalanche diode (SPAD) and a measurement circuit including a capacitance. The circuit is operable to discharge a known portion of the charge on the capacitance upon each detection of a SPAD event within a time period, such that the charge remaining on the capacitance at the end of the time period corresponds to the number of SPAD events detected within the time period. A time resolved imaging apparatus includes an array of such pixel circuits. A method of counting photon detection includes sensing photons with a SPAD device and discharging a known portion of the charge on a capacitance upon each detection of a SPAD event within a time period.
摘要翻译： 像素电路包括单光子雪崩二极管（SPAD）和包括电容的测量电路。 该电路可操作以在每个在一段时间内检测到SPAD事件之后对电容的已知部分进行放电，使得在该时间段结束时剩余在电容上的电荷对应于检测到的SPAD事件的数量 在这段时间内。 时间分辨成像装置包括这种像素电路的阵列。 计数光子检测的方法包括在SPAD装置中检测光子并在每个在一段时间内检测到SPAD事件之后，将电荷的已知部分在电容上放电。
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