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公开(公告)号：US10893227B2
公开(公告)日：2021-01-12
申请号：US16549577
申请日：2019-08-23
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yibing Michelle Wang , Ilia Ovsiannikov
Abstract: Using the same image sensor to capture a two-dimensional (2D) image and three-dimensional (3D) depth measurements for a 3D 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 operates as a Time-to-Digital (TDC) converter to generate timestamps. A timestamp calibration circuit is provided on-board to record the propagation delay of each column of pixels in the pixel array and to provide necessary corrections to the timestamp values generated during 3D depth measurements.
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公开(公告)号：US10545224B2
公开(公告)日：2020-01-28
申请号：US15878392
申请日：2018-01-23
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yibing Michelle Wang
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：US20200026980A1
公开(公告)日：2020-01-23
申请号：US16552945
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：US20190392287A1
公开(公告)日：2019-12-26
申请号：US16446610
申请日：2019-06-19
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：US10311298B2
公开(公告)日：2019-06-04
申请号：US15968578
申请日：2018-05-01
Applicant: Samsung Electronics Co., Ltd.
Inventor： Ilia Ovsiannikov , Yibing Michelle Wang , Yong-Hwa Park , Yong-Chul Cho , Heesun Yoon , ChangYoung Park , Dirk Smits
Abstract: Exemplary embodiments for a biometric camera system for a mobile device, comprise: a near infrared (NIR) light source on the mobile device that flashes a user of the mobile device with near infrared light during image capture; a biometric camera located on the mobile device offset from the NIR light source, the biometric camera comprising: an extended depth of field (EDOF) imaging lens; a bandpass filter located adjacent to the EDOF imaging lens to reject ambient light during image capture; and an imaging sensor located adjacent the bandpass filter that converts an optical image of an object into an electronic signal for image processing; and a processor configured to receive video images of an iris of a user from the image sensor, and attempt to match the video images of the iris with previously registered images stored in an iris database, wherein if a match is found, the user is authenticated.
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Patent Agency Ranking
公开(公告)号：US10250833B2
公开(公告)日：2019-04-02
申请号：US14973709
申请日：2015-12-17
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yibing Michelle Wang , Ilia Ovsiannikov
Abstract: Using the same image sensor to capture a two-dimensional (2D) image and three-dimensional (3D) depth measurements for a 3D 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 operates as a Time-to-Digital (TDC) converter to generate timestamps. A timestamp calibration circuit is provided on-board to record the propagation delay of each column of pixels in the pixel array and to provide necessary corrections to the timestamp values generated during 3D depth measurements.
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57.发明授权公开(公告)号：US10116925B1
公开(公告)日：2018-10-30
申请号：US15657101
申请日：2017-07-21
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yibing Michelle Wang , Lilong Shi , Ilia Ovsiannikov
IPC: H04N13/254 , H04N5/374 , G01S7/486 , H04N13/02 , H04N5/369 , H04N5/3745 , H04N5/378 , G01S17/10
CPC classification number: H04N13/254 , G01S7/4863 , G01S17/10 , H04N5/3696 , H04N5/37455 , H04N5/378
Abstract: A Time-of-Flight (TOF) technique is combined with analog amplitude modulation within each pixel in a pixel array using multiple Single Photon Avalanche Diodes (SPADs) in conjunction with a single Pinned Photo Diode (PPD) in each pixel. A SPAD may be shared among multiple neighboring pixels. The TOF information is added to the received light signal by the analog domain-based single-ended to differential converter inside the pixel itself. The spatial-temporal correlation among outputs of multiple, adjacent SPADs in a pixel is used to control the operation of the PPD to facilitate recording of TOF values and range of an object. Erroneous range measurements due to ambient light are prevented by stopping the charge transfer from the PPD—and, hence, recording a TOF value—only when two or more SPADs in the pixel are triggered within a pre-defined time interval. An autonomous navigation system with multi-SPAD pixels provides improved vision for drivers under difficult driving conditions.
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公开(公告)号：US20180268215A1
公开(公告)日：2018-09-20
申请号：US15968578
申请日：2018-05-01
Applicant: Samsung Electronics Co., Ltd.
Inventor： Ilia Ovsiannikov , Yibing Michelle Wang , Yong-Hwa Park , Yong-Chul Cho , Heesun Yoon , ChangYoung Park , Dirk Smits
CPC classification number: G06K9/00604 , G06F21/32 , G06K9/00033 , G06K9/00617 , G06K9/4609 , G06T7/586 , G06T2207/20201 , G07C9/00158
Abstract: Exemplary embodiments for a biometric camera system for a mobile device, comprise: a near infrared (NIR) light source on the mobile device that flashes a user of the mobile device with near infrared light during image capture; a biometric camera located on the mobile device offset from the NIR light source, the biometric camera comprising: an extended depth of field (EDOF) imaging lens; a bandpass filter located adjacent to the EDOF imaging lens to reject ambient light during image capture; and an imaging sensor located adjacent the bandpass filter that converts an optical image of an object into an electronic signal for image processing; and a processor configured to receive video images of an iris of a user from the image sensor, and attempt to match the video images of the iris with previously registered images stored in an iris database, wherein if a match is found, the user is authenticated.
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59.发明授权公开(公告)号：US09843756B2
公开(公告)日：2017-12-12
申请号：US14723427
申请日：2015-05-27
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yibing Michelle Wang , Kwanghyun Lee , Hongyu Wang , Taechan Kim
IPC: H04N5/374 , H04N5/3745 , H04N5/378 , H01L27/146
CPC classification number: H04N5/378 , H01L27/14603 , H01L27/1461 , H01L27/14612 , H01L27/14614 , H04N5/3742 , H04N5/3745
Abstract: In some embodiments, an imaging device includes a pixel array. At least one of the pixels includes a photodiode that can generate charges, and a select transistor that receives the charges in its bulk. When the select transistor is selected, a pixel current through it may depend on a number of the received charges, thus evidencing how much light it detected. A reset transistor may reset the voltage of the bulk.
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公开(公告)号：US12105224B2
公开(公告)日：2024-10-01
申请号：US17865126
申请日：2022-07-14
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yibing Michelle Wang , Chunji Wang
IPC: G01S7/4865 , G01S17/10
CPC classification number: G01S7/4865 , G01S17/10
Abstract: Disclosed is a single pass light detection and ranging (LiDAR) laser method, including building a coarse histogram, detecting a first peak of laser pulses in the coarse histogram, determining whether the first peak height is greater than a first threshold and a location of the first peak is less than or equal to a second threshold, when determining that the first peak height is greater than the first threshold and the location of the first peak is less than or equal to the second threshold, building a fine histogram, and detecting a peak of laser pulses in the fine histogram, and when determining that the first peak height is less than or equal to the first threshold and the location of the first peak is greater than the second threshold, continuing the building of the coarse histogram, and detecting a second peak of the laser pulses in the coarse histogram.
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