Patents by Inventor Xinqiao (Chiao) Liu

Xinqiao (Chiao) Liu 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: 20220176785
    Abstract: A vehicle-window glass assembly includes a vehicle-window glass and its injection-molded encapsulation; and an over-molded bolt including a base, a thread rod and an injection-molded part. One end of the thread rod is fixedly connected to the base, and the injection-molded part covers at least a part of the base. The injection-molded encapsulation covers at least a part of the injection-molded part such that the over-molded bolt and the vehicle-window glass are fixed to each other, and a material of the injection-molded part has a tensile strength greater than that of a material of the injection-molded encapsulation. This vehicle-window glass assembly can b e adapted to various vehicle models with a large gap between a surface of a vehicle-window glass and a vehicle-door sheet metal on which the vehicle-window glass requires to be mounted.
    Type: Application
    Filed: April 13, 2020
    Publication date: June 9, 2022
    Inventors: Buyin YU, Xinqiao GAO, Xiaobing XU
  • Publication number: 20220159204
    Abstract: In one example, an apparatus comprises: multiple distinct sets of photodiodes, wherein each set of photodiodes includes one or more photodiodes, one or more charge sensing units, and a controller. The controller is configured to: transfer charge generated by the one or more photodiodes in response to a different component of incident light to the one or more charge sensing units in order to convert the charge to voltages; perform one or more quantization processes of a plurality of quantization processes corresponding to a plurality of intensity ranges, wherein the one or more quantization processes quantizes the voltages from the one or more charge sensing units to digital values representing components of a pixel of different wavelength ranges; and generate a pixel value based on the at least some of the digital values.
    Type: Application
    Filed: February 2, 2022
    Publication date: May 19, 2022
    Inventors: Andrew Samuel Berkovich, Xinqiao Liu, Song Chen, Nicholas Daniel Trail, Michael Patrick Schaub
  • Publication number: 20220139990
    Abstract: In one example, an apparatus comprises: a semiconductor substrate comprising a first photodiode and a second photodiode, the first photodiode being positioned adjacent to the second photodiode along a first axis; a birefringent crystal positioned over the first photodiode and the second photodiode along a second axis perpendicular to the first axis; and a microlens positioned over the birefringent crystal along the second axis, the microlens having an asymmetric curvature along the first axis, an apex point of the curvature being positioned over the first photodiode along the second axis.
    Type: Application
    Filed: October 29, 2021
    Publication date: May 5, 2022
    Inventors: Qing Chao, Xinqiao Liu
  • Publication number: 20220141447
    Abstract: A depth camera assembly (DCA) for depth sensing of a local area. The DCA includes a transmitter, a receiver, and a controller. The transmitter illuminates a local area with outgoing light in accordance with emission instructions. The transmitter includes a fine steering element and a coarse steering element. The fine steering element deflects one or more optical beams at a first deflection angle to generate one or more first order deflected scanning beams. The coarse steering element deflects the one or more first order deflected scanning beams at a second deflection angle to generate the outgoing light projected into the local area. The receiver captures one or more images of the local area including portions of the outgoing light reflected from the local area. The controller determines depth information for one or more objects in the local area based in part on the captured one or more images.
    Type: Application
    Filed: January 19, 2022
    Publication date: May 5, 2022
    Inventors: Michael Hall, Qing Chao, Byron Taylor, Xinqiao Liu
  • Publication number: 20220141405
    Abstract: In some examples, a sensor apparatus comprises: a pixel cell configured to generate a voltage, the pixel cell including one or more photodiodes configured to generate a charge in response to light and a charge storage device to convert the charge to a voltage; an integrated circuit comprising a plurality of integrated memory circuits and configured to: generate, based on a first voltage obtained from the charge storage device of the pixel cell, a first voltage value during a first time period; and generate, based on a second voltage generated by fixed pattern noise from the pixel cell and the integrated circuit, a second voltage value occurring a second time period; and one or more analog-to-digital converters (ADC) configured the convert the first voltage value to a first digital pixel value and the second voltage value to a second digital pixel value; and a processor configured to generate a first altered digital pixel value based on the first digital pixel value and the second digital pixel value.
    Type: Application
    Filed: November 3, 2021
    Publication date: May 5, 2022
    Inventors: Tsung-Hsun Tsai, Xinqiao Liu, Song Chen, Andrew Samuel Berkovich, Lyle David Bainbridge
  • Patent number: 11315330
    Abstract: A sensor assembly for determining one or more features of a local area is presented herein. The sensor assembly includes a plurality of stacked sensor layers. A first sensor layer of the plurality of stacked sensor layers located on top of the sensor assembly includes an array of pixels. The top sensor layer can be configured to capture one or more images of light reflected from one or more objects in the local area. The sensor assembly further includes one or more sensor layers located beneath the top sensor layer. The one or more sensor layers can be configured to process data related to the captured one or more images. A plurality of sensor assemblies can be integrated into an artificial reality system, e.g., a head-mounted display.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: April 26, 2022
    Assignee: Facebook Technologies, LLC
    Inventor: Xinqiao Liu
  • Publication number: 20220116565
    Abstract: In some examples, a sensor apparatus comprises: a pixel cell configured to generate a voltages, the pixel cell including a photodiode configured to generate charge in response to incoming light, and a charge storage device to convert the charge to a voltage; an integrated circuit configured to: determine a first captured voltage converted by the charge storage device during a first time period; compare the first captured voltage to a threshold voltage value; and in response to determining that the first captured voltage meets or exceeds the threshold voltage value: determine first time data corresponding to the first time period; and prevent the charge storage device from further generating a charge; and an analog-to-digital converter (ADC) configured to generate a digital pixel value based on the first captured voltage, and a memory to store the digital pixel value and the first time data.
    Type: Application
    Filed: October 7, 2021
    Publication date: April 14, 2022
    Inventors: Tsung-Hsun TSAI, Song CHEN, Xinqiao LIU
  • Publication number: 20220094872
    Abstract: An apparatus comprises a first photodiode, a second photodiode, a quantizer, a memory, and a controller configured to: set a first exposure period in which the first photodiode generates a first charge; set a second exposure period in which the second photodiode generates a second charge, the second exposure period being set based on the first exposure period and at least one of: a first time associated with a read out operation of the memory to a second apparatus, or a second time associated with a quantization operation by the quantizer; perform, using the quantizer, the first quantization operation of the first charge to generate a first digital output; and perform, using the quantizer, a second quantization operation of the second charge to generate a second digital output.
    Type: Application
    Filed: November 30, 2021
    Publication date: March 24, 2022
    Inventors: Xinqiao LIU, Song CHEN, Tsung-Hsun TSAI
  • Patent number: 11265532
    Abstract: A depth camera assembly (DCA) for depth sensing of a local area. The DCA includes a transmitter, a receiver, and a controller. The transmitter illuminates a local area with outgoing light in accordance with emission instructions. The transmitter includes a fine steering element and a coarse steering element. The fine steering element deflects one or more optical beams at a first deflection angle to generate one or more first order deflected scanning beams. The coarse steering element deflects the one or more first order deflected scanning beams at a second deflection angle to generate the outgoing light projected into the local area. The receiver captures one or more images of the local area including portions of the outgoing light reflected from the local area. The controller determines depth information for one or more objects in the local area based in part on the captured one or more images.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: March 1, 2022
    Assignee: Facebook Technologies, LLC
    Inventors: Michael Hall, Qing Chao, Byron Taylor, Xinqiao Liu
  • Publication number: 20220036571
    Abstract: A depth camera assembly (DCA) determines depth information. The DCA projects a dynamic structured light pattern into a local area and captures images including a portion of the dynamic structured light pattern. The DCA determines regions of interest in which it may be beneficial to increase or decrease an amount of texture added to the region of interest using the dynamic structured light pattern. For example, the DCA may identify the regions of interest based on contrast values calculated using a contrast algorithm, or based on the parameters received from a mapping server including a virtual model of the local area. The DCA may selectively increase or decrease an amount of texture added by the dynamic structured light pattern in portions of the local area. By selectively controlling portions of the dynamic structured light pattern, the DCA may decrease power consumption and/or increase the accuracy of depth sensing measurements.
    Type: Application
    Filed: October 18, 2021
    Publication date: February 3, 2022
    Inventors: Michael Hall, Xinqiao Liu, Zhaoming Zhu, Rajesh Lachhmandas Chhabria, Huixuan Tang, Shuochen Su, Zihe Gao
  • Publication number: 20220032753
    Abstract: A vehicle decoration part is arranged in a pillar sheet metal and/or a window frame of a vehicle and includes a decoration body and a decoration film attached to surface(s) of the decoration body, wherein the material of the decoration body is metal, and the material of the decoration film is flexible material and forms decoration surface. The vehicle decoration part possesses stable performance and can meet the user's requirements of different appearances. When the vehicle decoration part is applied to a vehicle window glass assembly, bad appearance caused by bumping or scraping in molding process and daily use process can be avoided. The molding device and the manufacturing process of the vehicle window glass assembly are easy to realize, economical in cost and wide in application prospect.
    Type: Application
    Filed: November 7, 2019
    Publication date: February 3, 2022
    Inventors: Buyin YU, Xinqiao GAO, Romain GONNET, Camille DASSONVILLE
  • Patent number: 11236993
    Abstract: A depth camera assembly (DCA) includes a light generator emitting a beam of light into a local area and a detector. The detector captures light from the beam reflected by objects in the local area to a portion of an array of pixels that each include a single photon avalanche diode (SPAD). The location of the portion of the array is based in part on the angle of the beam emitted from the projector. The DCA identifies a set of pixels of the array corresponding to the portion and selectively retrieves current generated from the reflected light by the pixels in the portion of the array without retrieving current generated by pixels in other portions of the array.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: February 1, 2022
    Assignee: Facebook Technologies, LLC
    Inventors: Michael Hall, Xinqiao Liu
  • Publication number: 20220028103
    Abstract: A depth estimation system is described capable of determining depth information using two images from two cameras. A first camera captures a first image and a second camera captures a second image, both images including a plurality of light channels. A scan direction is selected from a plurality of scan directions. For the selected scan direction, along each of a plurality of scanlines, the system compares pixels from the first image to pixels from the second image. The comparison is based on calculating a census transform for each pixel in the first image and a census transform for each pixel in the second image. This comparison is used to determine a stereo correspondence between the pixels in the first image and the pixels in the second image. The system generates a depth map based on the stereo correspondence.
    Type: Application
    Filed: April 14, 2021
    Publication date: January 27, 2022
    Inventors: Michael Hall, Xinqiao Liu, Zhaoming Zhu, Rajesh Lachhmandas Chhabria, Huixuan Tang, Shuochen Su
  • Patent number: 11233085
    Abstract: An apparatus is provided. The apparatus includes a semiconductor substrate including a first photodiode to generate a first charge, a second photodiode to generate a second charge, a barrier layer between the first photodiode and the second photodiode, wherein the first photodiode, the barrier layer, and the second photodiode form a stack. The apparatus further includes a floating drain and one or more gates including: a first gate portion on the semiconductor substrate and a second gate portion extending from the front side surface through the first photodiode and reaching the barrier layer. The first gate portion is configured to conduct a first signal to control flow of charge from the first photodiode to the floating drain, and the second gate portion is configured to conduct a second signal to control the barrier layer to control the flow of the second charge.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: January 25, 2022
    Assignee: Facebook Technologies, LLC
    Inventors: Song Chen, Xinqiao Liu
  • Patent number: 11230685
    Abstract: A highly wear-resistant plant genetic lubricant oil additive, a preparation method and an application thereof are disclosed. The additive includes 90-97% of a plant base oil and 3-10% of an aerogel. The plant base oil is prepared from a mixed plant oil of soybean oil, rapeseed oil, sesame oil, peanut oil, olive oil, castor seed oil, salad oil, sunflower seed oil and tung oil. The highly wear-resistant plant genetic lubricant oil additive is added to various lubricant oils for being used to devices, and a colloidal substance is generated after the devices are driven and heat is generated, so that the lubricant oils are firmly adhered to the surface of components. The lubricant oil additive not only has characteristics of high abrasion resistance, high and low temperature resistance, and oxidation resistance, but also the used lubricant oil can be regenerated and recycled after being recovered and filtered.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: January 25, 2022
    Assignee: Changde Jizhi Biotechnology Limited Company
    Inventor: Xinqiao He
  • Patent number: 11218660
    Abstract: An apparatus comprises a first photodiode, a second photodiode, a charge sensing unit, a quantizer, a memory, and a controller configured to: set a first exposure period in which the first photodiode generates a first charge; set a second exposure period in which the second photodiode generates a second charge, the second exposure period being set based on the first exposure period and at least one of: a first time associated with a read out operation of the memory to a second apparatus, or a second time associated with a quantization operation by the quantizer; perform, using the quantizer, the first quantization operation of the first charge to generate a first digital output; store the first digital output in the memory; perform, using the quantizer, a second quantization operation of the second charge to generate a second digital output; and store the second digital output in the memory.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: January 4, 2022
    Assignee: Facebook Technologies, LLC
    Inventors: Xinqiao Liu, Song Chen, Tsung-Hsun Tsai
  • Publication number: 20210383114
    Abstract: The disclosure discloses a control device for a robot to tease a pet and a mobile robot. The primary sensor is configured to continuously collect a preset number of frames of pet motion images in each motion cycle. The state recognizer is configured to judge the matching between the pet motion images continuously collected by the primary sensor and a pre-stored digital image of pet behavior, and then parse a matching result into behavior state parameters of a pet. The behavior interferometer is configured to adjust and control a behavior state of the pet according to the behavior state parameters and an additional road sign image provided by the secondary sensor. The laser projector is configured to project a laser beam to form a structural light spot, so that the pet changes toward the behavior state adjusted by the behavior interferometer.
    Type: Application
    Filed: November 9, 2019
    Publication date: December 9, 2021
    Inventors: Dengke XU, Xinqiao JIANG
  • Patent number: 11195291
    Abstract: A depth camera assembly (DCA) optimizes illumination and image capture of a local area to generate depth information of the local area. The DCA determines depth information for a first portion of the local area viewable at a first pose. The DCA is moved from the first pose to a second pose, where a second portion of the local area is viewable and overlaps with the first portion. The overlapping region is not illuminated by the DCA. A non-overlapping portion of the second portion is illuminated, captured, and depth information determined.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: December 7, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Fengqiang Li, Zihe Gao, Michael Hall, Zhaoming Zhu, Shuochen Su, Huixuan Tang, Xinqiao Liu, Nicholas Daniel Trail
  • Patent number: 11182914
    Abstract: A depth camera assembly (DCA) determines depth information. The DCA projects a dynamic structured light pattern into a local area and captures images including a portion of the dynamic structured light pattern. The DCA determines regions of interest in which it may be beneficial to increase or decrease an amount of texture added to the region of interest using the dynamic structured light pattern. For example, the DCA may identify the regions of interest based on contrast values calculated using a contrast algorithm, or based on the parameters received from a mapping server including a virtual model of the local area. The DCA may selectively increase or decrease an amount of texture added by the dynamic structured light pattern in portions of the local area. By selectively controlling portions of the dynamic structured light pattern, the DCA may decrease power consumption and/or increase the accuracy of depth sensing measurements.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: November 23, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Michael Hall, Xinqiao Liu, Zhaoming Zhu, Rajesh Lachhmandas Chhabria, Huixuan Tang, Shuochen Su, Zihe Gao
  • Patent number: 11165982
    Abstract: A photo sensor includes a plurality of pixel blocks, each including one or more anchor pixels and one or more non-anchor pixels. The anchor pixels produce first sensor signals and the non-anchor pixels produce second sensor signals. An amplifier circuit amplifies the first and second sensor signals. A variable bit-depth analog to digital converter (ADC) circuit quantizes amplified versions of the first sensor signals into first digitized sensor signals with a first bit-depth. The ADC circuit also quantizes amplified versions of the second sensor signals into second digitized sensor signals with a second bit-depth that is lower than the first bit depth. The second bit-depth may be selected based on anchor pixel statistics derived from the one or more first digitized sensor signals.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: November 2, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Xinqiao Liu, Jakob Julian Engel