Patents by Inventor Yibing Michelle Wang

Yibing Michelle Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10431613
    Abstract: An image sensor includes a plurality of nanoantennas that satisfy sub-wavelength conditions. Each of the nanoantennas includes a diode and a transistor. Each diode is either a PN diode or a PIN diode.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: October 1, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seunghoon Han, Yibing Michelle Wang
  • Patent number: 10417525
    Abstract: A client device configured with a neural network includes a processor, a memory, a user interface, a communications interface, a power supply and an input device, wherein the memory includes a trained neural network received from a server system that has trained and configured the neural network for the client device. A server system and a method of training a neural network are disclosed.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: September 17, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Zhengping Ji, Ilia Ovsiannikov, Yibing Michelle Wang, Lilong Shi
  • Publication number: 20190281276
    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.
    Type: Application
    Filed: May 24, 2019
    Publication date: September 12, 2019
    Inventors: Yibing Michelle WANG, Lilong SHI, Ilia OVSIANNIKOV
  • Patent number: 10397553
    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.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: August 27, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yibing Michelle Wang, Lilong Shi, Ilia Ovsiannikov
  • Patent number: 10397554
    Abstract: An image sensor includes a plurality of a first type of diodes and a time-resolving sensor. The time-resolving sensor outputs first and second reset signals, and first and second measurement signals. The two reset signals respective represent a reset-charge level of a first and a second floating diffusion. The measurement signals are output in response the diodes detecting at least one incident photon. First and second time-of-flight (TOF) signals are formed by respective subtracting the first and second reset signals from the first and second measurement signals. A first ratio of a magnitude of the first signal to a sum of the magnitudes of the first and second signals is proportional to a TOF of the detected photon, and a second ratio of the magnitude of the second signal to the sum of the magnitudes of the first and second signals is proportional to the TOF of the detected photons.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: August 27, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Yibing Michelle Wang
  • Publication number: 20190187256
    Abstract: A Direct Time-of-Flight (DTOF) technique is combined with analog amplitude modulation within each pixel in a pixel array. No Single Photon Avalanche Diodes (SPADs) or Avalanche Photo Diodes (APDs) are used. Instead, each pixel has a Photo Diode (PD) with a conversion gain of over 400 ?V/e? and Photon Detection Efficiency (PDE) of more than 45%, operating in conjunction with a Pinned Photo Diode (PPD). 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 output of the PD in a pixel is used to control the operation of the PPD. The charge transfer from the PPD is stopped—and, hence, TOF value and range of an object are recorded—when the output from the PD in the pixel is triggered within a pre-defined time interval. Such pixels provide for an improved autonomous navigation system for drivers.
    Type: Application
    Filed: March 13, 2018
    Publication date: June 20, 2019
    Inventor: Yibing Michelle WANG
  • Publication number: 20190187983
    Abstract: A system for calculating. A scratch memory is connected to a plurality of configurable processing elements by a communication fabric including a plurality of configurable nodes. The scratch memory sends out a plurality of streams of data words. Each data word is either a configuration word used to set the configuration of a node or of a processing element, or a data word carrying an operand or a result of a calculation. Each processing element performs operations according to its current configuration and returns the results to the communication fabric, which conveys them back to the scratch memory.
    Type: Application
    Filed: March 8, 2018
    Publication date: June 20, 2019
    Inventors: Ilia Ovsiannikov, Yibing Michelle Wang
  • Publication number: 20190178634
    Abstract: A structured-light pattern for a structured-light system includes a base light pattern that includes a row of a plurality of sub-patterns extending in a first direction. Each sub-pattern is adjacent to at least one other sub-pattern, and each sub-pattern is different from each other sub-pattern. Each sub-pattern includes a first number of portions in a sub-row and a second number of portions in a sub-column. Each sub-row extends in the first direction and each sub-column extends in a second direction that is substantially orthogonal to the first direction. Each portion may be a first-type portion or a second-type portion. A size of a first-type portion is larger in the first direction and in the second direction than a size of a second-type portion in the first direction and in the second direction. In one embodiment, a first-type portion is a black portion and the second-type portion is a white portion.
    Type: Application
    Filed: June 7, 2018
    Publication date: June 13, 2019
    Inventors: Lilong SHI, Yibing Michelle WANG
  • Publication number: 20190170864
    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.
    Type: Application
    Filed: January 23, 2018
    Publication date: June 6, 2019
    Inventor: Yibing Michelle WANG
  • Publication number: 20190174120
    Abstract: An image sensor includes a plurality of a first type of diodes and a time-resolving sensor. The time-resolving sensor outputs first and second reset signals, and first and second measurement signals. The two reset signals respective represent a reset-charge level of a first and a second floating diffusion. The measurement signals are output in response the diodes detecting at least one incident photon. First and second time-of-flight (TOF) signals are formed by respective subtracting the first and second reset signals from the first and second measurement signals. A first ratio of a magnitude of the first signal to a sum of the magnitudes of the first and second signals is proportional to a TOF of the detected photon, and a second ratio of the magnitude of the second signal to the sum of the magnitudes of the first and second signals is proportional to the TOF of the detected photons.
    Type: Application
    Filed: January 22, 2019
    Publication date: June 6, 2019
    Inventor: Yibing Michelle WANG
  • Patent number: 10311298
    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.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: June 4, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ilia Ovsiannikov, Yibing Michelle Wang, Yong-Hwa Park, Yong-Chul Cho, Heesun Yoon, ChangYoung Park, Dirk Smits
  • Publication number: 20190101379
    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.
    Type: Application
    Filed: November 14, 2018
    Publication date: April 4, 2019
    Inventor: Yibing Michelle WANG
  • Patent number: 10250833
    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.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: April 2, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yibing Michelle Wang, Ilia Ovsiannikov
  • Publication number: 20190094015
    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.
    Type: Application
    Filed: November 9, 2018
    Publication date: March 28, 2019
    Inventor: Yibing Michelle WANG
  • Publication number: 20190056500
    Abstract: A method is disclosed to determine a traveling time for a plurality of received light pulses that reflected and returned from an object. Each returned light pulse is associated with a timestamp indicating a time between a transmission time of a corresponding light pulse and a time of arrival of the returned light pulse. For each timestamp, a number C is determined of time stamps that are subsequent to the timestamp and within a predetermined time window after the timestamp. A maximum number C is determined, and an index i is determined for the maximum number C. A traveling time is determined for the plurality of light pulses as an average of the timestamp having a same index as the maximum number C and timestamps that are within the predetermined time window after the timestamp having the same index as the maximum number C.
    Type: Application
    Filed: November 8, 2017
    Publication date: February 21, 2019
    Inventors: Lilong SHI, Yibing Michelle WANG
  • Patent number: 10212358
    Abstract: An imaging device includes at least a first group of pixels. A driver block is configured to generate at least two shutter signals, each having on-phases periodically alternating with off-phases. The shutter signals might not be in phase. The imaging device may have an optical shutter that is partitioned in two or more parts, or a set of two or more optical shutters. The shutter parts, or the shutters, may receive the shutter signals, and accordingly open and close. A design of the driver block requires reduced power, which is highly desirable for mobile applications. Moreover, 3D imaging may be implemented that uses various time-of-flight configurations.
    Type: Grant
    Filed: March 4, 2018
    Date of Patent: February 19, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yibing Michelle Wang, Ilia Ovsiannikov, Yong-Hwa Park
  • Publication number: 20190045151
    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.
    Type: Application
    Filed: October 1, 2018
    Publication date: February 7, 2019
    Inventors: Yibing Michelle WANG, Ilia OVSIANNIKOV
  • Patent number: 10198660
    Abstract: An apparatus and a method. The apparatus includes a dynamic vision sensor (DVS) configured to generate a stream of events, where an event includes a location and a binary value indicating a positive or a negative change in luminance; a sampling unit connected to the DVS and configured to sample the stream of events; and an image formation unit connected to the sampling unit and configured to form an image for each sample of the stream of events, wherein a manner of sampling by the sampling unit is adjusted to reduce variations between images formed by the image formation unit.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: February 5, 2019
    Assignee: Samsung Electronics Co. Ltd.
    Inventors: Zhengping Ji, Qiang Zhang, Kyoobin Lee, Yibing Michelle Wang, Hyun Surk Ryu, Ilia Ovsiannikov
  • Publication number: 20190020864
    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.
    Type: Application
    Filed: September 18, 2018
    Publication date: January 17, 2019
    Inventors: Yibing Michelle WANG, Lilong SHI, Ilia OVSIANNIKOV
  • Patent number: 10145678
    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.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: December 4, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yibing Michelle Wang, Ilia Ovsiannikov, Dirk Smits