-
公开(公告)号：US10715754B2
公开(公告)日：2020-07-14
申请号：US15877551
申请日：2018-01-23
Inventor： John Kevin Moore , Neale Dutton
Abstract: In an embodiment, a TDC includes: a clock input configured to receive a reference clock that is synchronized with a first event; a clock generation circuit configured to generate a first clock at a first output of the clock generation circuit based on the reference clock, the first clock having a second frequency lower than the reference clock; a data input configured to receive an input stream of pulses, where the input stream of pulses is based on the first event; a sampling circuit having an input register, the sampling circuit coupled to the data input, the sampling circuit configured to continuously sample the input stream of pulses into the input register based on the reference clock; and output terminals configured to stream time stamps based on the input stream of pulses at the second frequency, where the stream of time stamps is synchronized with the first clock.
-
公开(公告)号：US20200011732A1
公开(公告)日：2020-01-09
申请号：US16448121
申请日：2019-06-21
Inventor： Neale Dutton , John Kevin Moore
Abstract: An optical sensor includes at least one photodetector configured to be reverse biased at a voltage exceeding a breakdown voltage by an excess bias voltage. At least one control unit is configured to adjust the reverse bias of the at least one photodetector. A method of operating an optical sensor is also disclosed.
-
公开(公告)号：US10521921B2
公开(公告)日：2019-12-31
申请号：US15476100
申请日：2017-03-31
Inventor： Xiaoyong Yang , Neale Dutton
IPC: G01S17/89 , G06T7/55 , G06T7/73 , G06T7/521 , H04N5/235 , G01S17/02 , G01S7/48 , G01S7/497 , G06K9/00 , G07C9/00
Abstract: An apparatus includes time of flight single-photon avalanche diode (ToF SPAD) circuitry. The ToF SPAD circuitry generates indications of distance between the apparatus and an object within a field of view. A processor receives the indications of distance and controls at least one image sensor, such as a camera, to capture at least one image based on at least one indication of distance. The processor determines whether an image is a true representation of an expected object by comparing multiple indications of distance associated with the object to an expected object distance profile and comparing the image to at least one expected object image.
-
公开(公告)号：US10333626B2
公开(公告)日：2019-06-25
申请号：US16108257
申请日：2018-08-22
Inventor： Neale Dutton , Denise Lee , Graeme Storm
IPC: H04B10/00 , H04B10/516 , H04B10/114 , H04B10/66 , H04B10/50 , H04B10/58 , H04B10/61
Abstract: An embodiment device includes an optical source configured to generate an optical carrier including an optical pulse train; and a modulator configured to modulate an amplitude of the optical pulse train, based on data generated by a data source, to produce a modulated optical signal.
-
公开(公告)号：US20150041625A1
公开(公告)日：2015-02-12
申请号：US14451482
申请日：2014-08-05
Inventor： Neale Dutton , Robert K. Henderson , Salvatore Gnecchi
CPC classification number: G04F10/005 , G01S7/4865 , G01S17/10 , G01T1/248 , G01T1/2985
Abstract: A time to digital converter includes a sample module operable to sample an input signal at multiple different instances of time. A transition detection module, formed of comparison elements, processes the sampled input signal at successive time instances so as to detect transitions in the input signal in terms of time. An output module generates detected transitions in the input signal on multiple parallel outputs.
Abstract translation: 时间到数字转换器包括可操作以在多个不同的时间点对输入信号进行采样的采样模块。 由比较元件形成的转换检测模块在连续的时间实例处理采样的输入信号，以便检测输入信号在时间上的转变。 输出模块在多个并行输出上产生输入信号中检测到的转换。
-
Patent Agency Ranking
公开(公告)号：US11892568B2
公开(公告)日：2024-02-06
申请号：US17074238
申请日：2020-10-19
Applicant: STMICROELECTRONICS (RESEARCH & DEVELOPMENT) LIMITED , STMicroelectronics (Grenoble 2) SAS
Inventor： Ivelina Hristova , Pascal Mellot , Neale Dutton
IPC: G06T7/50 , G06F1/10 , G06T15/08 , G06T15/00 , G01S7/4865 , G01S17/894 , G01S7/4863
CPC classification number: G01S7/4865 , G01S7/4863 , G01S17/894 , G06F1/10 , G06T7/50 , G06T15/005 , G06T15/08 , G06T2207/10108
Abstract: A depth map sensor includes a first array of first pixels, each first pixel having a first photodetector associated with a pixel circuit that comprises a plurality of first bins for accumulating events. A clock source is configured to generate a plurality of phase-shifted clock signals. A first circuit has a plurality of first output lines coupled to the first array of first pixels. The first circuit is configured to receive the plurality of phase-shifted clock signals. The first circuit includes a first block and a second block. The first block is configured to propagate the plurality of phase-shifted clock signals to the second block during a first period determined by a first enable signal and the second block configured to select to which of the plurality of first output lines each of the plurality of phase-shifted clock signals is applied.
-
公开(公告)号：US20230197759A1
公开(公告)日：2023-06-22
申请号：US18170270
申请日：2023-02-16
Inventor： Neale Dutton
IPC: H01L27/146 , H01L25/16 , G06T7/579 , H01L31/02 , H04N25/77
CPC classification number: H01L27/14643 , H01L25/167 , G06T7/579 , H01L31/02027 , H04N25/77 , G06T2207/10028
Abstract: An imaging device includes a sensor array with a number of pixels. In an embodiment, the imaging device can be operated by capturing a first low-spatial resolution frame using a subset of pixels of the sensor array and then capturing a second low-spatial resolution frame using the same subset of pixels of the sensor array. A first depth map is generated using raw pixel values of the first low-spatial resolution frame and a second depth map is generated using raw pixel values of the second low-spatial resolution frame. The first depth map can be compared to the second depth map to determine whether an object has moved in a field of view of the imaging device.
-
公开(公告)号：US20220390576A1
公开(公告)日：2022-12-08
申请号：US17341084
申请日：2021-06-07
Inventor： Kasper Buckbee , Neale Dutton
IPC: G01S7/4865 , H03M1/34 , G01S7/4863
Abstract: In an embodiment, a method includes: resetting respective count values of a plurality of analog counters to an initial count value, each analog counter of the plurality of analog counters corresponding to a histogram bin of a time-of-flight (ToF) histogram; after resetting the respective count values, receiving a plurality of digital addresses from a time-to-digital converter (TDC); during an integration period, for each received digital address, selecting one analog counter based on the received digital address, and changing the respective count value of the selected one analog counter towards a second count value by a discrete amount, where each analog counter has a final count value at an end of the integration period; and after the integration period, determining an associated final bin count of each histogram bin of the ToF histogram based on the final count value of the corresponding analog counter.
-
公开(公告)号：US20220357435A1
公开(公告)日：2022-11-10
申请号：US17868261
申请日：2022-07-19
Inventor： Neale Dutton , John Kevin Moore
IPC: G01S7/4863 , G01S17/89
Abstract: A ToF sensor includes an array of pixels having first and second subsets of pixels, first and second pluralities of TDCs, a routing bus having first and second pluralities of bus drivers, and a controller configured to: when the first subset of pixels is active and the second subset of pixels is not active, control the first plurality of bus drivers to route events from half of the pixels of the first subset to the first plurality of TDCs and control the first and second pluralities of bus drivers to route events from the other half of the pixels of the first subset to the second plurality of TDCs, and when the first subset of pixels is not active and the second subset of pixels is active, control the first plurality of bus drivers to route events from the second subset of pixels to the first plurality of TDCs.
-
公开(公告)号：US11349042B2
公开(公告)日：2022-05-31
申请号：US16718762
申请日：2019-12-18
Inventor： Mohammed Al-Rawhani , Neale Dutton , John Kevin Moore , Bruce Rae , Elsa Lacombe
IPC: H04N5/378 , H01L31/107 , H01L27/146 , H01L31/02 , H04N5/3745
Abstract: A pixel includes a single photon avalanche diode (SPAD) having a cathode coupled to a high voltage supply through a quenching element, with the SPAD having a capacitance at its anode formed from a deep trench isolation, with the quenching element having a sufficiently high resistance such that the capacitance is not fully charged when the SPAD is struck by an incoming photon. The pixel includes a clamp transistor configured to be controlled by a voltage clamp control signal to clamp voltage at an anode of the SPAD when the SPAD is struck by an incoming photon to be no more than a threshold clamped anode voltage, and readout circuitry coupled to receive the clamped anode voltage from the clamp transistor and to generate a pixel output therefrom. The threshold clamped anode voltage is below a maximum operating voltage rating of transistors forming the readout circuitry.
-
-
-
-
-
-
-
-
-
Search Results
71
records
(took 0.025 seconds)
