公开(公告)号：US20210255291A1

公开(公告)日：2021-08-19

申请号：US17177608

申请日：2021-02-17

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： Cedric Tubert

IPC: G01S7/497 ,  G01S7/4865 ,  G01S17/36

Abstract: An embodiment device for synchronizing the emission and the reception of a light signal for a time-of-flight sensor comprises a power-control circuit configured to generate and transmit a power signal based on a control signal for controlling the sensor, the power signal being configured to supply power to an array of pixels of the sensor, a production module for producing a synchronization signal, which module is configured to produce the synchronization signal based on the control signal, and a switch configured to supply power to a light source of a device for emitting the light signal, the production module being further configured to transmit the synchronization signal to the switch such that the time taken to produce and transmit the synchronization signal and the time taken to generate and transmit the power signal are identical.

公开(公告)号：US20210183018A1

公开(公告)日：2021-06-17

申请号：US17112341

申请日：2020-12-04

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： Cedric Tubert ,  Jeremie Teyssier ,  Gregory Roffet ,  Stephane Drouard

IPC: G06T5/00 ,  G06T5/20 ,  H04N5/21 ,  H04N5/357

Abstract: In an embodiment, a method includes: receiving data signals from a plurality of pixels of an array of pixels; generating a plurality of signal-to-noise ratios by determining signal-to-noise ratios for each respective pixel of the plurality of pixels on the basis of the data signals received from the respective pixel; and filtering the data signals received from each pixel of the plurality of pixels by using an adaptive filter configured on the basis of the plurality of the signal-to-noise ratios to generate filtered data signals.

公开(公告)号：US10580809B2

公开(公告)日：2020-03-03

申请号：US15372017

申请日：2016-12-07

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： Cedric Tubert

IPC: H01L27/146

Abstract: A circuit includes a pixel structure having a photo sensitive element and a read transistor. The read transistor includes a first load path terminal coupled to the photo sensitive element, and a second load path terminal coupled to a voltage bus. The circuit also includes a first transistor having a third load path terminal coupled to a power supply node, and a fourth load path terminal configured to be coupled to a current source. The circuit further includes a first control switch coupled between the voltage bus and the fourth load path terminal of the first transistor.

公开(公告)号：US09148604B2

公开(公告)日：2015-09-29

申请号：US14045516

申请日：2013-10-03

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： Cedric Tubert

IPC: H04N5/355 ,  H04N5/378 ,  H04N5/374

CPC classification number: H04N5/378 ,  H04N5/355 ,  H04N5/35581 ,  H04N5/374

Abstract: A method for reading a pixel, including at least two integration periods, at least one of said periods including at least one integration sub-period, wherein an output value of the pixel is determined by taking into account the amounts of photogenerated charges contained in the pixel at the end of each of said periods and the amount of photogenerated charges stored in a photodiode of the pixel beyond a threshold during said at least one sub-period.

Abstract translation: 一种用于读取包括至少两个积分周期的像素的至少一个所述周期的方法，所述至少一个所述周期包括至少一个积分子周期，其中通过考虑包含在所述像素中的光生电荷的量来确定像素的输出值 在所述至少一个子周期期间，每个所述周期结束时的像素和存储在像素的光电二极管中的光生电荷的量超过阈值。

公开(公告)号：US20130334411A1

公开(公告)日：2013-12-19

申请号：US13896219

申请日：2013-05-16

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： John Brunel ,  Cedric Tubert

IPC: H01L31/02 ,  H01L31/107

CPC classification number: H01L31/107 ,  G01J1/44 ,  G01J2001/4466 ,  H01L31/02016 ,  H01L31/02019 ,  H01L31/02027

Abstract: The present disclosure relates to a method for adjusting a bias voltage of a SPAD photodiode, comprising successive steps of: applying to the photodiode a first test bias voltage lower than a normal bias voltage applied to the photodiode in a normal operating mode, subjecting the photodiode to photons, reading a first avalanche triggering signal of the photodiode, applying to the photodiode a second test bias voltage, different from the first test bias voltage, subjecting the photodiode to photons, reading a second avalanche triggering signal of the photodiode, increasing the normal bias voltage if the first and second signals indicate that the photodiode did not avalanche trigger, and reducing the normal bias voltage if the first and second signals indicate that the photodiode did avalanche trigger.

Abstract translation: 本公开涉及一种用于调整SPAD光电二极管的偏置电压的方法，包括以下步骤：在正常工作模式下向光电二极管施加低于施加到光电二极管的正常偏置电压的第一测试偏置电​​压，对光电二极管 读取光电二极管的第一雪崩触发信号，向光电二极管施加与第一测试偏置电​​压不同的第二测试偏置电​​压，对光电二极管进行光子，读取光电二极管的第二雪崩触发信号，从而增加正常 如果第一和第二信号指示光电二极管没有雪崩触发，并且如果第一和第二信号指示光电二极管发生雪崩触发，则降低正常偏置电压。