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公开(公告)号：US11703594B2
公开(公告)日：2023-07-18
申请号：US17735108
申请日：2022-05-02
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yibing Michelle Wang
IPC: G01S17/10 , G01S7/4863 , G01S7/4865 , G01S17/894 , G01S17/89
CPC classification number: G01S17/10 , G01S7/4863 , G01S7/4865 , G01S17/89 , G01S17/894
Abstract: A time-resolving sensor includes a single-photon avalanche diode (SPAD), a logic circuit and differential time-to-charge converter (DTCC) circuit. The SPAD is responsive to a shutter signal to generate an output signal based on detecting an incident photon. The logic circuit generates first and second enable signals. The DTCC includes a capacitor device, first and second switching devices, and an output circuit. The first switching device is responsive to the first enable signal to transfer a charge on the capacitor device to the first floating diffusion. The second switching device is responsive to the second enable signal to transfer a remaining charge on the capacitor device to the second floating diffusion. The output circuit outputs a first voltage that is based on the first charge on the first floating diffusion and a second voltage that is based on the second charge on the second floating diffusion.
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公开(公告)号：US20230005170A1
公开(公告)日：2023-01-05
申请号：US17943068
申请日：2022-09-12
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yibing Michelle Wang , Kwang Oh Kim , Lilong Shi
IPC: G06T7/521
Abstract: A camera system. In some embodiments, the camera system includes a first laser, a camera, and a processing circuit connected to the first laser and to the camera. The first laser may be steerable, and the camera may include a pixel including a photodetector and a pixel circuit, the pixel circuit including a first time-measuring circuit.
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公开(公告)号：US11366226B2
公开(公告)日：2022-06-21
申请号：US17015058
申请日：2020-09-08
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yibing Michelle Wang
IPC: G01S17/10 , G01S7/4865 , G01S7/4863 , G01S17/89 , G01S17/894
Abstract: A time-resolving sensor includes a single-photon avalanche diode (SPAD), a logic circuit and differential time-to-charge converter (DTCC) circuit. The SPAD is responsive to a shutter signal to generate an output signal based on detecting an incident photon. The logic circuit generates first and second enable signals. The DTCC includes a capacitor device, first and second switching devices, and an output circuit. The first switching device is responsive to the first enable signal to transfer a charge on the capacitor device to the first floating diffusion. The second switching device is responsive to the second enable signal to transfer a remaining charge on the capacitor device to the second floating diffusion. The output circuit outputs a first voltage that is based on the first charge on the first floating diffusion and a second voltage that is based on the second charge on the second floating diffusion.
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公开(公告)号：US11348954B2
公开(公告)日：2022-05-31
申请号：US16409767
申请日：2019-05-10
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yibing Michelle Wang , Lilong Shi , Kwang Oh Kim , Chunji Wang
IPC: H01L27/146 , G01S17/10 , G01S17/894 , G01S7/4863 , G01S7/4865
Abstract: A pixel of an image sensor includes a pinned photodiode (PPD), a switching device and an output circuit. A first terminal of the switching device is coupled to the PPD. A second terminal of the switching device is coupled to a floating diffusion (FD). A third terminal of the switching device is coupled to a first enable signal and a second enable signal. The switching device is responsive to the first enable signal to transfer a first charge on the PPD to the FD, and responsive to the second enable signal to transfer a second charge on the PPD to the FD. The output circuit outputs a first voltage based on the first charge and outputs a second voltage based on the second charge in which the first voltage corresponds to a time of flight of one or more detected photons and the second voltage corresponds to a greyscale image.
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公开(公告)号：US11294039B2
公开(公告)日：2022-04-05
申请号：US16140529
申请日：2018-09-24
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yibing Michelle Wang , Lilong Shi , Ilia Ovsiannikov
IPC: G01S7/4863 , G04F10/00 , G01S17/89 , G01S7/4865
Abstract: An image sensor includes a time-resolving sensor and a processor. The time-resolving sensor outputs a first signal and a second signal pair in response detecting one or more photons that have been reflected from an object. A first ratio of a magnitude of the first signal to a sum of the magnitude of the first signal and a magnitude of the second signal is proportional to a time of flight of the one or more detected photons. A second ratio of the magnitude of the second signal to the sum of the magnitude of the first signal and the magnitude of the second signal is proportional to the time of flight of the one or more detected photons. The processor determines a surface reflectance of the object where the light pulse has been reflected based on the first signal and the second signal pair and may generate a grayscale image.
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Patent Agency Ranking
公开(公告)号：US10885648B2
公开(公告)日：2021-01-05
申请号：US16186463
申请日：2018-11-09
Applicant: Samsung Electronics Co., Ltd.
Inventor： Lilong Shi , Yibing Michelle Wang
IPC: G06T7/521 , H04N13/254 , H04N13/271 , H04N13/00
Abstract: A method of reconstructing a three dimensional image using a structured light pattern system is provided as follows. A class identifier of an observed pixel on a captured image by a camera is extracted. The observed pixel has a coordinate (x, y) on the captured image. A first relative position of the x coordinate of the observed pixel in a tile domain of the captured image is calculated. A second relative position of one of a plurality of dots in a tile domain of a reference image using the extracted class identifier is calculated. A disparity of the observed pixel using the first relative position and the second relative position is calculated.
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公开(公告)号：US10733760B2
公开(公告)日：2020-08-04
申请号：US16597846
申请日：2019-10-09
Applicant: Samsung Electronics Co., Ltd.
Inventor： Zhengping Ji , Lilong Shi , Yibing Michelle Wang , Hyun Surk Ryu , Ilia Ovsiannikov
Abstract: A Dynamic Vision Sensor (DVS) pose-estimation system includes a DVS, a transformation estimator, an inertial measurement unit (IMU) and a camera-pose estimator based on sensor fusion. The DVS detects DVS events and shapes frames based on a number of accumulated DVS events. The transformation estimator estimates a 3D transformation of the DVS camera based on an estimated depth and matches confidence-level values within a camera-projection model such that at least one of a plurality of DVS events detected during a first frame corresponds to a DVS event detected during a second subsequent frame. The IMU detects inertial movements of the DVS with respect to world coordinates between the first and second frames. The camera-pose estimator combines information from a change in a pose of the camera-projection model between the first frame and the second frame based on the estimated transformation and the detected inertial movements of the DVS.
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公开(公告)号：US10718605B2
公开(公告)日：2020-07-21
申请号：US16191415
申请日：2018-11-14
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yibing Michelle Wang
Abstract: Using the same image sensor to capture both a two-dimensional (2D) image of a three-dimensional (3D) object and 3D depth measurements for the object. A laser point-scans the surface of the object with light spots, which are detected by a pixel array in the image sensor to generate the 3D depth profile of the object using triangulation. Each row of pixels in the pixel array forms an epipolar line of the corresponding laser scan line. Timestamping provides a correspondence between the pixel location of a captured light spot and the respective scan angle of the laser to remove any ambiguity in triangulation. An Analog-to-Digital Converter (ADC) in the image sensor generates a multi-bit output in the 2D mode and a binary output in the 3D mode to generate timestamps. Strong ambient light is rejected by switching the image sensor to a 3D logarithmic mode from a 3D linear mode.
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公开(公告)号：US20200026978A1
公开(公告)日：2020-01-23
申请号：US16552619
申请日：2019-08-27
Applicant: Samsung Electronics Co., Ltd.
Inventor： Ilia Ovsiannikov , Ali Shafiee Ardestani , Joseph H. Hassoun , Lei Wang , Sehwan Lee , JoonHo Song , Jun-Woo Jang , Yibing Michelle Wang , Yuecheng Li
Abstract: A neural processor. In some embodiments, the processor includes a first tile, a second tile, a memory, and a bus. The bus may be connected to the memory, the first tile, and the second tile. The first tile may include: a first weight register, a second weight register, an activations buffer, a first multiplier, and a second multiplier. The activations buffer may be configured to include: a first queue connected to the first multiplier and a second queue connected to the second multiplier. The first queue may include a first register and a second register adjacent to the first register, the first register being an output register of the first queue. The first tile may be configured: in a first state: to multiply, in the first multiplier, a first weight by an activation from the output register of the first queue, and in a second state: to multiply, in the first multiplier, the first weight by an activation from the second register of the first queue.
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公开(公告)号：US10527728B2
公开(公告)日：2020-01-07
申请号：US15498096
申请日：2017-04-26
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yibing Michelle Wang
IPC: G01S17/00 , G01S17/89 , H04N13/204
Abstract: An apparatus and a method. The apparatus includes a single-photon avalanche diode (SPAD) circuit configured to detect a photon, including a first input for receiving a first voltage (VSPAD), a second input for receiving a first signal (SHUTTER), a third input for receiving a second voltage (VDD), and an output; a logic circuit configured to latch the detected photon, including a first input connected to the output of the SPAD circuit, a second input for receiving a second signal (TXRMD), and an output; and a pinned photo diode (PPD) circuit configured to record a time of flight (TOF) of the detected photon, including a first input connected to the output of the logic circuit, a second input for receiving a third signal (VTX), a third input for receiving a fourth signal (RST), a fourth input for receiving a third voltage (VPIX), a fifth input for receiving a fifth signal (SEL), and an output.
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