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).

  • Publication number: 20170185871
    Abstract: An image signal processing (ISP) system is provided. The system includes a neural network trained by inputting a set of raw data images and a correlating set of desired quality output images; the neural network including an input for receiving input image data and providing processed output; wherein the processed output includes input image data that has been adjusted for at least one image quality attribute. A method and an imaging device are disclosed.
    Type: Application
    Filed: March 18, 2016
    Publication date: June 29, 2017
    Inventors: Qiang ZHANG, Zhengping JI, Yibing Michelle WANG, Ilia OVSIANNIKOV
  • Patent number: 9661308
    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 Converter (TDC) to generate timestamps. When the epipolar line is misaligned or curved, multiple TDC arrays acquire timestamps of multiple pixels (in multiple rows) substantially simultaneously. Multiple timestamp values are reconciled to obtain a single timestamp value for a light spot.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: May 23, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yibing Michelle Wang, Ilia Ovsiannikov, Peter Deane
  • Publication number: 20170142406
    Abstract: An apparatus and a method are provided. The apparatus includes a light source configured to project light in a changing pattern that reduces the light's noticeability; collection optics through which light passes and forms an epipolar plane with the light source; and an image sensor configured to receive light passed through the collection optics to acquire image information and depth information simultaneously. The method includes projecting light by a light source in a changing pattern that reduces the light's noticeability; passing light through collection optics and forming an epipolar plane between the collection optics and the light source; and receiving in an image sensor light passed through the collection optics to acquire image information and depth information simultaneously.
    Type: Application
    Filed: January 6, 2016
    Publication date: May 18, 2017
    Inventors: Ilia OVSIANNIKOV, Yibing Michelle WANG, Peter DEANE
  • Publication number: 20170134710
    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 Converter (TDC) to generate timestamps. When the epipolar line is misaligned or curved, multiple TDC arrays acquire timestamps of multiple pixels (in multiple rows) substantially simultaneously. Multiple timestamp values are reconciled to obtain a single timestamp value for a light spot.
    Type: Application
    Filed: January 6, 2016
    Publication date: May 11, 2017
    Inventors: Yibing Michelle WANG, Ilia OVSIANNIKOV, Peter DEANE
  • Publication number: 20170097417
    Abstract: A range sensor and a method thereof. The range sensor includes a light source configured to project a sheet of light at an angle within a field of view (FOV); an image sensor offset from the light source; collection optics; and a controller connected to the light source, the image sensor, and the collection optics, and configured to determine a range of a distant object based on direct time-of-flight and determine a range of a near object based on triangulation. The method includes projecting, by a light source, a sheet of light at an angle within an FOV; offsetting an image sensor from the light source; collecting, by collection optics, the sheet of light reflected off objects; and determining, by a controller connected to the light source, the image sensor, and the collection optics, a range of a distant object based on direct time-of-flight and a range of a near object based on triangulation simultaneously.
    Type: Application
    Filed: January 11, 2016
    Publication date: April 6, 2017
    Inventor: Yibing Michelle WANG
  • Publication number: 20170064235
    Abstract: A method and a system are disclosed for detecting a depth of an object illuminated by at least one first light pulse. Detection of light reflected from the object illuminated by the at least one first light pulse by a first row of pixels of 2D pixel array is enabled for a first predetermined period of time in which the first row of pixels forms an epipolar line of a scanning line of a first light pulse. Enabling of the detection by the first row of pixels for the first predetermined period of time occurs a second predetermined period of time after a beginning of a pulse cycle T of the at least one first light pulse. Detection signals are generated corresponding to the detected light reflected from the object, and the generated detection signals are used to determine a depth of the object.
    Type: Application
    Filed: December 4, 2015
    Publication date: March 2, 2017
    Inventors: Yibing Michelle WANG, Ilia OVSIANNIKOV
  • Publication number: 20170026590
    Abstract: A pixel array includes color pixels that have a layout, and depth pixels having a layout that starts from the layout of the color pixels. Photodiodes of adjacent depth pixels can be joined to form larger depth pixels, while still efficiently exploiting the layout of the color pixels. Moreover, some embodiments are constructed so as to enable freeze-frame shutter operation of the pixel array.
    Type: Application
    Filed: October 3, 2016
    Publication date: January 26, 2017
    Inventors: Yibing Michelle WANG, Dong-Ki MIN, Ilia OVSIANNIKOV, Yoon-Dong PARK
  • Publication number: 20160309140
    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: December 17, 2015
    Publication date: October 20, 2016
    Inventors: Yibing Michelle WANG, Ilia OVSIANNIKOV
  • Publication number: 20160309135
    Abstract: Two-dimensional (2D) color information and 3D-depth information are concurrently obtained from a 2D pixel array. The 2D pixel array is arranged in a first group of a plurality of rows. A second group of rows of the array are operable to generate 2D-color information and pixels of a third group of the array are operable to generate 3D-depth information. The first group of rows comprises a first number of rows, the second group of rows comprises a second number of rows that is equal to or less than the first number of rows, and the third group of rows comprises a third number of rows that is equal to or less than the second number of rows. In an alternating manner, 2D-color information is received from a row selected from the second group of rows and 3D-depth information is received from a row selected from the third group of rows.
    Type: Application
    Filed: September 16, 2015
    Publication date: October 20, 2016
    Inventors: Ilia OVSIANNIKOV, Yibing Michelle WANG, Gregory WALIGORSKI, Qiang ZHANG
  • Publication number: 20160307326
    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: September 1, 2015
    Publication date: October 20, 2016
    Inventor: Yibing Michelle WANG
  • Publication number: 20160307325
    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: September 1, 2015
    Publication date: October 20, 2016
    Inventors: Yibing Michelle WANG, Ilia OVSIANNIKOV, Dirk SMITS
  • Patent number: 9462202
    Abstract: A pixel array includes regular pixels for imaging, and special pixel sites interspersed among the regular pixels. When the regular pixels become saturated from bright illumination, at least some of their excess charges are removed by the special pixel sites. The removal can reduce or eliminate blooming. In some embodiments, the special pixel sites include special pixels. For imaging, the regular pixels of a group such as a sub-array provide regular outputs that are combined into a composite signal. The special pixels provide a special output. The special output of the group may optionally be added to the composite signal, which can increase the dynamic range.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: October 4, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yibing Michelle Wang, Hongyu W. Wang
  • Patent number: 9411726
    Abstract: An embodiment includes a system, comprising a first memory; a plurality of first circuits, wherein each first circuit is coupled to the memory; and includes a second circuit configured to generate a first output value in response to an input value received from the first memory; and an accumulator configured to receive the first output value and generate a second output value; and a controller coupled to the memory and the first circuits, and configured to determine the input values to be transmitted from the memory to the first circuits.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: August 9, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ilia Ovsiannikov, Zhengping Ji, Yibing Michelle Wang, Hongyu Wang
  • Publication number: 20160165118
    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: Application
    Filed: July 23, 2015
    Publication date: June 9, 2016
    Inventors: Yibing Michelle WANG, Ilia OVSIANNIKOV, Yong-Hwa PARK
  • Patent number: 9350930
    Abstract: A unit pixel of a stacked image sensor includes a stacked photoelectric conversion unit, a first and second signal generating units. The stacked photoelectric conversion unit includes first, second and third photoelectric conversion elements that are stacked on each other. The first, second and third photoelectric conversion elements collect first, second and third photocharges based on first, second and third components of incident light. The first signal generating unit generates a first pixel signal based on the first photocharges and a first signal node and generates a second pixel signal based on the second photocharges and the first signal node. The second signal generating unit generates a third pixel signal based on the third photocharges and a second signal node. At least a portion of the second signal generating unit is shared by the first signal generating unit.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: May 24, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tae-Yon Lee, Yibing Michelle Wang, Gwi-deok Ryan Lee
  • Patent number: 9312841
    Abstract: Aspects of the invention may comprise receiving a first input signal and a second input signal via respective first and second input transistors. A biasing signal, generated by a cascode bias generator, that tracks the first input signal, where the biasing signal has a fixed offset with respect to the first input signal. The biasing signal may be applied to the first and second cascode transistors that may be cascoded to the first and second input transistors, respectively.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: April 12, 2016
    Assignee: SK Hynix Inc.
    Inventors: Jeff Rysinski, Yibing Michelle Wang, Sang-Soo Lee
  • Patent number: 9312842
    Abstract: Aspects of the invention may comprise receiving a first input signal and a second input signal via respective first and second input transistors. A biasing signal, generated by a cascode bias generator, that tracks the first input signal, where the biasing signal has a fixed offset with respect to the first input signal. The biasing signal may be applied to the first and second cascode transistors that may be cascoded to the first and second input transistors, respectively.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: April 12, 2016
    Assignee: SK Hynix Inc.
    Inventors: Jeff Rysinski, Yibing Michelle Wang, Sang-Soo Lee
  • Patent number: 9247109
    Abstract: An imaging device has an array with pixels that can image an aspect of an object. In addition, pixels in the array can be used to perform motion detection or edge detection. A first and a second pixel can integrate light non-concurrently, and then their outputs may be compared. A difference in their outputs may indicate an edge in an imaging operation, and motion in a motion detection operation. The motion detection operation may be performed without needing the imaging device to have an additional modulated LED light source, and to spend the power to drive that source.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: January 26, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Yibing Michelle Wang
  • Patent number: 9232163
    Abstract: A depth pixel includes a photo detection unit, an ambient light removal current source, a driving transistor and a select transistor. The photo detection unit is configured to generate a light current based on a received light reflected from a subject, the received light including an ambient light component. The ambient light removal current source configured to generate a compensation current indicating the ambient light component in response to a power supply and at least one compensation control signal. The driving transistor is configured to amplify an effective voltage corresponding to the light current and the compensation current. The select transistor configured to output the amplified effective voltage in response to a selection signal, the amplified effective voltage indicating a depth of the subject.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: January 5, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Eric R. Fossum, Yibing Michelle Wang, Tae-Yon Lee, Yoon-Dong Park
  • Publication number: 20150187844
    Abstract: A unit pixel of a stacked image sensor includes a stacked photoelectric conversion unit, a first and second signal generating units. The stacked photoelectric conversion unit includes first, second and third photoelectric conversion elements that are stacked on each other. The first, second and third photoelectric conversion elements collect first, second and third photocharges based on first, second and third components of incident light. The first signal generating unit generates a first pixel signal based on the first photocharges and a first signal node and generates a second pixel signal based on the second photocharges and the first signal node. The second signal generating unit generates a third pixel signal based on the third photocharges and a second signal node. At least a portion of the second signal generating unit is shared by the first signal generating unit.
    Type: Application
    Filed: August 6, 2014
    Publication date: July 2, 2015
    Inventors: Tae-Yon LEE, Yibing Michelle WANG, Gwi-deok Ryan LEE