-
公开(公告)号：US20200233081A1
公开(公告)日：2020-07-23
申请号：US16741401
申请日：2020-01-13
Applicant: STMicroelectronics (Grenoble 2) SAS
Inventor： Pascal Mellot
IPC: G01S17/04 , H01L31/02 , H01L31/107 , G01S7/4863 , G01S7/4865 , G01S17/10
Abstract: The present disclosure relates to a proximity detection device. The proximity detection device includes one or more photodetectors and a readout circuit configured to sample one or more output signals from the one or more photodetectors at regular intervals throughout a detection period. The proximity detection device includes a pulse transmission circuit configured to transmit into the scene a first optical pulse having a first pulse duration and a second optical pulse having a second pulse duration that is at least 50 percent longer than the first pulse duration.
-
公开(公告)号：US10267901B2
公开(公告)日：2019-04-23
申请号：US15169489
申请日：2016-05-31
Applicant: STMicroelectronics (Grenoble 2) SAS
Inventor： Marc Drader , Pascal Mellot
Abstract: A ranging device includes an array of photon detection devices adapted to receive an optical signal reflected by an object in an image scene. First and second logic devices are adapted to respectively combine the outputs of first and second pluralities of the photon detection devices. A first range detection circuit is coupled to outputs of the first and second logic devices and a first counter is coupled to the output of the first logic device and adapted to generate a first pixel value by counting events generated by the first plurality of photon detection devices. A second counter is coupled to the output of the second logic device and is adapted to generate a second pixel value by counting events generated by the second plurality of photon detection devices. The first and second pixel values may be used in estimating a range to the object in the image scene.
-
公开(公告)号：US09864049B2
公开(公告)日：2018-01-09
申请号：US14735548
申请日：2015-06-10
Applicant: STMICROELECTRONICS (GRENOBLE 2) SAS
Inventor： Pascal Mellot
CPC classification number: G01S7/4865 , G01S7/484 , G01S7/4868 , G01S13/225 , G01S17/10
Abstract: A method of measuring the phase of a response signal relative to a periodic excitation signal, comprises the steps of producing for each cycle of the response signal two transitions synchronized to a clock and framing a reference point of the cycle; swapping the two transitions to confront them in turns to the cycles of the response signal; measuring the offsets of the confronted transitions relative to the respective reference points of the cycles; performing a delta-sigma modulation of the swapping rate of the two transitions based on the successive offsets; and producing a phase measurement based on the duty cycle of the swapping rate.
-
公开(公告)号：US09147236B2
公开(公告)日：2015-09-29
申请号：US14195472
申请日：2014-03-03
Applicant: STMicroelectronics (Grenoble 2) SAS
Inventor： Gregory Roffet , Pascal Mellot
CPC classification number: G06T5/009 , G06T2207/10016 , G06T2207/10024 , G06T2207/10144 , G06T2207/20208 , H04N5/235
Abstract: A method of generation, by a digital processing device, of a first high dynamic range digital image from second and third digital images of a same scene, including, for at least one point of the first image: determining a brightness index; comparing this index with at least one of first, second, third, and fourth decreasing thresholds stored in a memory; and determining the value of the point by taking into account the value of the index.
Abstract translation: 一种通过数字处理装置从相同场景的第二和第三数字图像生成第一高动态范围数字图像的方法，包括：对于第一图像的至少一个点：确定亮度指数; 将该索引与存储在存储器中的第一，第二，第三和第四减小阈值中的至少一个进行比较; 并通过考虑索引的值来确定点的值。
-
公开(公告)号：US20140333834A1
公开(公告)日：2014-11-13
申请号：US14268010
申请日：2014-05-02
Applicant: STMICROELECTRONICS (GRENOBLE 2) SAS
Inventor： Pascal Mellot
IPC: H04N5/12
Abstract: Each of a first and second image acquisition device includes: a circuit for providing a primary clock signal and a frequency synthesizing circuit capable of generating at least one secondary clock signal from said primary clock signal. The frequency synthesizing circuit in each image acquisition device has a fractional phase-locked loop configuration. A synchronization comparison circuit in each image acquisition device functions to compare sync between an external sync signal and an internal sync signal. An adjustment of the fraction phase lock loop operation is made in response to the sync comparison.
Abstract translation: 第一和第二图像采集装置中的每一个包括：用于提供主时钟信号的电路和能够从所述主时钟信号产生至少一个辅助时钟信号的频率合成电路。 每个图像采集装置中的频率合成电路具有分数锁相环配置。 每个图像采集装置中的同步比较电路用于比较外部同步信号和内部同步信号之间的同步。 响应于同步比较进行分数锁相环操作的调整。
-
Patent Agency Ranking
公开(公告)号：US20140247979A1
公开(公告)日：2014-09-04
申请号：US14195472
申请日：2014-03-03
Applicant: STMICROELECTRONICS (GRENOBLE 2) SAS
Inventor： Gregory Roffet , Pascal Mellot
IPC: G06T5/00
CPC classification number: G06T5/009 , G06T2207/10016 , G06T2207/10024 , G06T2207/10144 , G06T2207/20208 , H04N5/235
Abstract: A method of generation, by a digital processing device, of a first high dynamic range digital image from second and third digital images of a same scene, including, for at least one point of the first image: determining a brightness index; comparing this index with at least one of first, second, third, and fourth decreasing thresholds stored in a memory; and determining the value of the point by taking into account the value of the index.
Abstract translation: 一种通过数字处理装置从相同场景的第二和第三数字图像生成第一高动态范围数字图像的方法，包括：对于第一图像的至少一个点：确定亮度指数; 将该索引与存储在存储器中的第一，第二，第三和第四减小阈值中的至少一个进行比较; 并通过考虑索引的值来确定点的值。
-
公开(公告)号：US20130153754A1
公开(公告)日：2013-06-20
申请号：US13719070
申请日：2012-12-18
Applicant: STMicroelectronics (Grenoble 2) SAS
Inventor： Marc Drader , Pascal Mellot
IPC: G01J1/02
CPC classification number: G01J1/02 , G01S7/4814 , G01S7/4816 , G01S7/484 , G01S7/486 , G01S7/489 , G01S17/026 , G01S17/107 , G01S17/89
Abstract: The disclosure relates to a method for detecting the presence of an object near a detection device, comprising: reverse biasing single photon avalanche photodiodes, at a bias voltage greater than a breakdown voltage of a PN junction of each photodiode, emitting pulses of an incident photon beam, detecting photodiodes which avalanche trigger after the reception by the photodiode of at least one photon of a reflected photon beam produced by a reflection of the incident beam on an object near the detection device, determining the object presence as a function of the existence of at least one avalanche triggering in one of the photodiodes, and selecting a number of photodiodes to be reverse biased in relation to the detection device, as a function of a load of a circuit for generating the bias voltage.
Abstract translation: 本公开涉及一种用于检测在检测装置附近存在物体的方法，包括：以大于每个光电二极管的PN结的击穿电压的偏置电压反向偏置单光子雪崩光电二极管，发射入射光子的脉冲 光束，检测光电二极管，其在由光电二极管接收由反射光子束产生的反射光子束所产生的入射光束在靠近检测装置的物体上触发，确定作为存在的函数的物体存在 在所述光电二极管之一中触发至少一个雪崩，并且根据用于产生所述偏置电压的电路的负载来选择要相对于所述检测装置反向偏置的多个光电二极管。
-
公开(公告)号：US12096146B2
公开(公告)日：2024-09-17
申请号：US18353665
申请日：2023-07-17
Applicant: STMicroelectronics (Grenoble 2) SAS
Inventor： Gregory Roffet , Pascal Mellot
IPC: H04N25/71 , H04N25/46 , H04N25/583
CPC classification number: H04N25/745 , H04N25/46 , H04N25/583
Abstract: The image sensor includes an array of photosensitive pixels comprising at least two sets of at least one pixel, control circuit configured to generate at least two different timing signals and adapted to control an acquisition of an incident optical signal by the pixels of the array, and distribution circuit configured to respectively distribute the at least two different timing signals in the at least two sets of at least one sensor, during the same acquisition of the incident optical signal.
-
公开(公告)号：US20240210532A1
公开(公告)日：2024-06-27
申请号：US18390529
申请日：2023-12-20
Applicant: STMicroelectronics (Research & Development) Limited , STMicroelectronics (Grenoble 2) SAS
Inventor： Neale Dutton , Pascal Mellot , Ivelina Hristova
IPC: G01S7/4861 , G01S7/481 , G01S7/4865
CPC classification number: G01S7/4861 , G01S7/4816 , G01S7/4865
Abstract: In an embodiment, an optoelectronic device includes a light source and an array of pixels. Each pixel of the array is configured to detect an amount of return light falling in each of a subset of time intervals that form a detection time window of the pixel. A time window position code generator is configured to generate a sequence of time window position codes. Each pixel includes a memory configured to store a first reference time window position associated with the pixel, a time window code comparator configured to compare a first time window position code of the sequence with the first reference time window position, and a timing sequence generator configured to generate, when the comparison indicates a match, a time window control signal configured to activate the detection of the return light during a detection time window selected by the time window control signal.
-
公开(公告)号：US11994425B2
公开(公告)日：2024-05-28
申请号：US18370637
申请日：2023-09-20
Applicant: STMicroelectronics (Research & Development) Limited , STMicroelectronics (Grenoble 2) SAS
Inventor： Jeffrey M. Raynor , Sophie Taupin , Jean-Jacques Rouger , Pascal Mellot
IPC: G01J1/42 , G01J1/44 , H01L23/58 , H01L27/144 , H01L31/02
CPC classification number: G01J1/4204 , G01J1/44 , H01L23/585 , H01L27/1443 , H01L27/1446 , H01L31/02019 , G01J2001/446 , G01J2001/448
Abstract: An optical sensor includes pixels. Each pixel has a photodetector. A readout circuit performs a process over an exposure time where the photodetector is connected to a reverse bias voltage supply to reset a voltage across the photodetector, and the photodetector is disconnected from the reverse bias voltage supply until that the voltage across the photodetector decreases in response to received ambient light. An ambient light level is then determine an based on a number of times the voltage across the photodetector is reset over the exposure time.
-
-
-
-
-
-
-
-
-
Search Results
64
records
(took 0.03 seconds)
