Patents by Inventor Chung Chun Wan

Chung Chun Wan 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: 20190180460
    Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, that determine whether to illuminate a scene with electromagnetic radiation at a first wavelength or electromagnetic radiation at a second wavelength. An illuminator that is configured to selectively emit electromagnetic radiation at the first wavelength and at the second wavelength is triggered to emit electromagnetic radiation at the first wavelength instead of the second wavelength. A first voltage is applied to a first electrically active filter. A third voltage is applied to a second electrically active filter. A first image is obtained from a first sensor that senses electromagnetic radiation that passes through the first filter. A second image is obtained from a second sensor that senses electromagnetic radiation that passes through the second filter. A depth map is generated from the first image and the second image.
    Type: Application
    Filed: December 11, 2017
    Publication date: June 13, 2019
    Inventor: Chung Chun Wan
  • Patent number: 10306209
    Abstract: An apparatus is described that includes a camera system having a time-of-flight illuminator. The time of flight illuminator has a light source and one or more tiltable mirror elements. The one or more tiltable mirror elements are to direct the illuminator's light to only a region within the illuminator's field of view.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: May 28, 2019
    Assignee: Google LLC
    Inventors: Jamyuen Ko, Chung Chun Wan
  • Patent number: 10291870
    Abstract: An apparatus is described that includes first and second pixels arrays integrated on a same semiconductor chip. The first pixel array contains visible light pixels and no Z pixels. The second pixel array contains Z pixels and no visible light pixels. The first and second pixel arrays do not overlap on said same semiconductor chip.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: May 14, 2019
    Assignee: Google LLC
    Inventor: Chung Chun Wan
  • Publication number: 20190137728
    Abstract: Implementations of the subject matter described herein include an actuator for adjusting focus in a camera. The actuator can include a carrier module that slides within a central opening of a housing and that carries a lens assembly of the camera. A magnet is located on a first lateral side of the carrier module. A wire coil is located on or along a first lateral side of the housing and faces the magnet on the first lateral side of the carrier module. A driver circuit is located on or along a second lateral side of the housing opposite the first lateral side of the housing. A connector component extends from a first region proximate the first lateral side of the housing to a second region proximate the second lateral side of the housing, the connector component including a conductor that electrically couples the driver circuit to the wire coil.
    Type: Application
    Filed: November 7, 2017
    Publication date: May 9, 2019
    Inventors: Chung Chun Wan, Jamyuen Ko
  • Patent number: 10263032
    Abstract: An image sensor pixel is disclosed. The pixel may include a photodiode having a first region with a first potential and a second region with a second, higher potential, with the second region being offset in depth from the first region in a semiconductor chip. A storage node may be positioned at substantially the same depth as the second region of the photodiode. A storage gate may be operable to transfer charge between the photodiode and the storage node.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: April 16, 2019
    Assignee: Apple, Inc.
    Inventor: Chung Chun Wan
  • Patent number: 10263022
    Abstract: An image sensor is described having a pixel array. The pixel array has a unit cell that includes visible light photodiodes and an infra-red photodiode. The visible light photodiodes and the infra-red photodiode are coupled to a particular column of the pixel array. The unit cell has a first capacitor coupled to the visible light photodiodes to store charge from each of the visible-light photodiodes. The unit cell has a readout circuit to provide the first capacitor's voltage on the particular column. The unit cell has a second capacitor that is coupled to the infra-red photodiode through a first transfer gate transistor to receive charge from the infra-red photodiode during a time-of-flight exposure. The first capacitor is coupled to the infra-red photodiode through a second transfer gate transistor to receive charge from the infra-red photodiode during the time-of-flight exposure.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: April 16, 2019
    Assignee: Google LLC
    Inventors: Chung Chun Wan, Boyd Albert Fowler
  • Publication number: 20190056792
    Abstract: Example virtual-reality head-mounted devices having reduced numbers of cameras, and methods of operating the same are disclosed herein. A disclosed example method includes providing a virtual-reality (VR) head-mounted display (V-HMD) having an imaging sensor, the imaging sensor including color-sensing pixels, and infrared (IR) sensing pixels amongst the color-sensing pixels; capturing, using the imaging sensor, an image having a color portion and an IR portion; forming an IR image from at least some of the IR portion from the image; performing a first tracking based on the IR image; forming a color image by replacing the at least some of the removed IR portion with color data determined from the color portion of the image and the location of the removed IR-sensing pixels in the image; and performing a second tracking based on the color image.
    Type: Application
    Filed: October 23, 2018
    Publication date: February 21, 2019
    Inventors: Chung Chun Wan, Choon Ping Chng
  • Publication number: 20190052808
    Abstract: An apparatus is described. The apparatus includes a smart image sensor having a memory and a processor that are locally integrated with an image sensor. The memory is to store first program code to be executed by the processor. The memory is coupled to the image sensor and the processor. The memory is to store second program code to be executed by the processor. The first program code is to cause the smart image sensor to perform an analysis on one or more images captured by the image sensor. The analysis identifies a region of interest within the one or more images with machine learning from previously captured images. The second program code is to cause the smart image sensor to change an image sensing and/or optical parameter in response to the analysis of the one or more images performed by the execution of the first program code.
    Type: Application
    Filed: October 10, 2018
    Publication date: February 14, 2019
    Inventors: Chung Chun Wan, Choon Ping Chng, Suk Hwan Lim, Szepo Robert Hung, Blaise Aguera-Arcas
  • Patent number: 10181201
    Abstract: A time-of-flight camera system is described. The time-of-flight camera system includes an illuminator to illuminate a region within the time-of-flight camera system's field of view. The time-of-flight camera system includes an image sensor to receive optical signals from the illumination for determining depth profile information within the field of view using time-of-flight measurement techniques. The image sensor has circuitry to determine one or more regions within the field of view where a received optical signal from the illuminating was weak. The illuminator is also to re-illuminate the one or more regions with stronger light than the one or more regions received during the illuminating. Each of the one or more regions being smaller than the region. The image sensor is also to receive optical signals from the re-illumination for determining depth profile information within the one or more regions.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: January 15, 2019
    Assignee: Google LLC
    Inventors: Chung Chun Wan, Jamyuen Ko
  • Patent number: 10182182
    Abstract: An apparatus is described that includes an image sensor having a first output port and a second output port. The first output port is to transmit a first image stream concurrently with a second image stream transmitted from the second output port.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: January 15, 2019
    Assignee: Google LLC
    Inventors: Roman Lewkow, Chung Chun Wan
  • Patent number: 10141366
    Abstract: An apparatus is described that includes a first semiconductor chip having a first pixel array. The first pixel array has visible light sensitive pixels. The apparatus includes a second semiconductor chip having a second pixel array. The first semiconductor chip is stacked on the second semiconductor chip such that the second pixel array resides beneath the first pixel array. The second pixel array has IR light sensitive pixels for time-of-flight based depth detection.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: November 27, 2018
    Assignee: Google Inc.
    Inventor: Chung Chun Wan
  • Publication number: 20180332224
    Abstract: An integrated stacked and/or abutted sensor, memory and processing hardware camera solution is described. The sensor is to receive light from an image and generate electronic pixels from the light. The processing hardware is to process the electronic pixels to: a) recognize a scene from the image in a lower quality image mode; b) trigger actions by the camera solution in response to the recognition of the scene, the actions including: i) transitioning the camera solution from the lower quality image mode to a higher quality image mode to capture a higher quality version of the image; and, ii) forwarding from the camera solution important imagery and not forwarding from the camera solution unimportant imagery.
    Type: Application
    Filed: July 10, 2018
    Publication date: November 15, 2018
    Inventors: SukHwan Lim, Chung Chun Wan, Choon Ping Chng, Blaise Aguera-Arcas
  • Patent number: 10128287
    Abstract: An image sensor is described having a pixel cell unit. The pixel cell unit has first, second and third transfer gate transistor gates on a semiconductor surface respectively coupled between first, second and third visible light photodiode regions and a first capacitance region. The pixel cell unit has a fourth transfer gate transistor gate on the semiconductor surface coupled between a first infrared photodiode region and a second capacitance region.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: November 13, 2018
    Assignee: Google LLC
    Inventors: Chung Chun Wan, Boyd Albert Fowler
  • Patent number: 10129477
    Abstract: An apparatus is described. The apparatus includes a smart image sensor having a memory and a processor that are locally integrated with an image sensor. The memory is to store first program code to be executed by the processor. The memory is coupled to the image sensor and the processor. The memory is to store second program code to be executed by the processor. The first program code is to cause the smart image sensor to perform an analysis on one or more images captured by the image sensor. The analysis identifies a region of interest within the one or more images with machine learning from previously captured images. The second program code is to cause the smart image sensor to change an image sensing and/or optical parameter in response to the analysis of the one or more images performed by the execution of the first program code. Alternatively or in combination, the memory is to store third program code to be executed by the processor and fourth program code to be executed by the processor.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: November 13, 2018
    Assignee: Google LLC
    Inventors: Chung Chun Wan, Choon Ping Chng, Suk Hwan Lim, Szepo Robert Hung, Blaise Aguera-Arcas
  • Patent number: 10114465
    Abstract: Example virtual-reality head-mounted devices having reduced numbers of cameras, and methods of operating the same are disclosed herein. A disclosed example method includes providing a virtual-reality (VR) head-mounted display (V-HMD) having an imaging sensor, the imaging sensor including color-sensing pixels, and infrared (IR) sensing pixels amongst the color-sensing pixels; capturing, using the imaging sensor, an image having a color portion and an IR portion; forming an IR image from at least some of the IR portion from the image; performing a first tracking based on the IR image; forming a color image by replacing the at least some of the removed IR portion with color data determined from the color portion of the image and the location of the removed IR-sensing pixels in the image; and performing a second tracking based on the color image.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: October 30, 2018
    Assignee: GOOGLE LLC
    Inventors: Chung Chun Wan, Choon Ping Chng
  • Patent number: 10056422
    Abstract: An apparatus is described that includes a first semiconductor chip having a first pixel array. The first pixel array has visible light sensitive pixels. The apparatus includes a second semiconductor chip having a second pixel array. The first semiconductor chip is stacked on the second semiconductor chip such that the second pixel array resides beneath the first pixel array. The second pixel array has IR light sensitive pixels for time-of-flight based depth detection.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: August 21, 2018
    Assignee: Google LLC
    Inventor: Chung Chun Wan
  • Patent number: 10055854
    Abstract: A time-of-flight camera system is described. The time-of-flight camera system includes an illuminator to illuminate a region within the time-of-flight camera system's field of view. The time-of-flight camera system includes an image sensor to receive optical signals from the illumination for determining depth profile information within the field of view using time-of-flight measurement techniques. The image sensor has circuitry to determine one or more regions within the field of view where a received optical signal from the illuminating was weak. The illuminator is also to re-illuminate the one or more regions with stronger light than the one or more regions received during the illuminating. Each of the one or more regions being smaller than the region. The image sensor is also to receive optical signals from the re-illumination for determining depth profile information within the one or more regions.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: August 21, 2018
    Assignee: Google LLC
    Inventors: Chung Chun Wan, Jamyuen Ko
  • Publication number: 20180097979
    Abstract: An apparatus is described that includes an image sensor having a first output port and a second output port. The first output port is to transmit a first image stream concurrently with a second image stream transmitted from the second output port.
    Type: Application
    Filed: December 5, 2017
    Publication date: April 5, 2018
    Inventors: Roman Lewkow, Chung Chun Wan
  • Publication number: 20180077406
    Abstract: An apparatus is described that includes a camera system having a time-of-flight illuminator. The time of flight illuminator has a light source and one or more tiltable mirror elements. The one or more tiltable mirror elements are to direct the illuminator's light to only a region within the illuminator's field of view.
    Type: Application
    Filed: November 17, 2017
    Publication date: March 15, 2018
    Inventors: Jamyuen Ko, Chung Chun Wan
  • Patent number: 9918073
    Abstract: An apparatus is described having an integrated two-dimensional image capture and three-dimensional time-of-flight depth capture system. The integrated two-dimensional image capture and three-dimensional time-of-flight depth capture system includes an illuminator to generate light for the time-of-flight depth capture system. The illuminator includes an array of light sources and a movable lens assembly. The movable lens assembly is to movably direct an emitted beam of the light to one of any of a plurality of locations within the illuminator's field of view to form an illuminated region of interest within the illuminator's field of view. The illuminated region of interest has a size that is smaller than the illuminator's field of view.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: March 13, 2018
    Assignee: Google LLC
    Inventors: Jamyuen Ko, Chung Chun Wan