Patents by Inventor Sergiu Radu Goma

Sergiu Radu Goma 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: 11561085
    Abstract: Aspects of the present disclosure relate to depth sensing using a device. An example device includes a light projector configured to project light in a first and a second distribution. The first and the second distribution include a flood projection when the device operates in a first mode and a pattern projection when the device operates in a second mode, respectively. The example device includes a receiver configured to detect reflections of light projected by the light projector. The example device includes a processor connected to a memory storing instructions. The processor is configured to determine first depth information based on reflections detected by the receiver when the device operates in the first mode, determine second depth information based on reflections detected by the receiver when the device operates in the second mode, and resolve multipath interference (MPI) using the first depth information and the second depth information.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: January 24, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Biay-Cheng Hseih, Jian Ma, Sergiu Radu Goma
  • Publication number: 20230012003
    Abstract: Systems and techniques are provided for meta-lens cameras. For example, an apparatus can include a first substrate including a first aperture and a second substrate including a first meta-lens. The first substrate and the second substrate are mechanically coupled such that at least a first portion of the first aperture is disposed over at least a second portion of the first meta-lens.
    Type: Application
    Filed: July 5, 2022
    Publication date: January 12, 2023
    Inventors: Jian MA, Biay-Cheng HSEIH, Matthieu Jean Olivier DUPRE, Sergiu Radu GOMA
  • Patent number: 11516391
    Abstract: Systems and techniques are described for large field of view digital imaging. A device's first image sensor captures a first image based on first light redirected from a first path onto a redirected first path by a first light redirection element, and the device's second image sensor captures a second image based on second light redirected from a second path onto a redirected second path by a second light redirection element. A virtual extension of the first path beyond the first light redirection element can intersect with a virtual extension of the second path intersect beyond the second light redirection element. The device can modify the first image and second image using perspective distortion correction, and can generate a combined image by combining the first image and the second image. The combined image can have a larger field of view than the first image and/or the second image.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: November 29, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Jian Ma, Shen-Ge Wang, Sergiu Radu Goma
  • Patent number: 11509880
    Abstract: A method and device is provided that compensates for different reflectivity/absorption coefficients of objects in a scene/object when performing active depth sensing using structured light. A receiver sensor captures an image of a scene onto which a code mask is projected. One or more parameters are ascertained from the captured image. Then a light source power for a projecting light source is dynamically adjusted according to the one or more parameters to improve decoding of the code mask in a subsequently captured image. Depth information for the scene may then be ascertained based on the captured image based on the code mask. In one example, the light source power is fixed at a particular illumination while an exposure time for the receiver sensor is adjusted. In another example, an exposure time for the receiver sensor is maintained/kept at a fixed value while the light source power is adjusted.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: November 22, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Judit Martinez Bauza, Kalin Mitkov Atanassov, Sergiu Radu Goma
  • Patent number: 11488999
    Abstract: Aspects of the present disclosure relate to an image sensor. An example apparatus includes an image sensor including one or more pixels. Each pixel of the one or more pixels includes a photodetector, and the photodetector includes a photosensitive surface including germanium. In some implementations, the photodetector includes a photodiode including an intrinsic silicon layer doped with germanium or including germanium crystals. The intrinsic layer may be between a p? layer and an n? layer not including germanium. The intrinsic layer may be configured to absorb photons of the light received at the intrinsic layer. The light may include one or more reflections of an emitted light for active depth sensing. For example, the emitted light may be frequency modulated and having a first wavelength for indirect time-of-flight depth sensing. Sampling circuits may generate voltages indicating a phase difference between the emitted light and a reflection of the emitted light.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: November 1, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Biay-Cheng Hseih, Sergiu Radu Goma
  • Patent number: 11438486
    Abstract: This disclosure provides systems, methods, and apparatuses for sensing a scene. In one aspect, a device may illuminate the scene using a sequence of two or more periods. Each period may include a transmission portion during which a plurality of light pulses are emitted onto the scene. Each period may include a non-transmission portion corresponding to an absence of emitted light. The device may receive, during each transmission portion, a plurality of light pulses reflected from the scene. The device may continuously accumulate photoelectric charge indicative of the received light pulses during an entirety of the sequence. The device may transfer the accumulated photoelectric charge to a readout circuit after an end of the sequence.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: September 6, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Jian Ma, Biay-Cheng Hseih, Sergiu Radu Goma
  • Publication number: 20220245762
    Abstract: Techniques and systems are provided for high resolution time-of-flight (ToF) depth imaging. In some examples, an apparatus includes a projection system including one or more light-emitting devices, each light-emitting device being configured to illuminate at least one portion of an entire field-of-view (FOV) of the projection system. The entire FOV includes a plurality of FOV portions. The apparatus also includes a receiving system including a sensor configured to sequentially capture a plurality of images based on a plurality of illumination reflections corresponding to light emitted by the one or more light-emitting devices. Each image of the plurality of images corresponds to one of the plurality of FOV portions. An image resolution associated with each image corresponds to a full resolution of the sensor. The apparatus further includes a processor configured to generate, using the plurality of images, an increased resolution depth map associated with the entire FOV.
    Type: Application
    Filed: February 3, 2021
    Publication date: August 4, 2022
    Inventors: Jian MA, Sergiu Radu GOMA, Biay-Cheng HSEIH
  • Publication number: 20210400193
    Abstract: Systems and techniques are described for large field of view digital imaging. A device's first image sensor captures a first image based on first light redirected from a first path onto a redirected first path by a first light redirection element, and the device's second image sensor captures a second image based on second light redirected from a second path onto a redirected second path by a second light redirection element. A virtual extension of the first path beyond the first light redirection element can intersect with a virtual extension of the second path intersect beyond the second light redirection element. The device can modify the first image and second image using perspective distortion correction, and can generate a combined image by combining the first image and the second image. The combined image can have a larger field of view than the first image and/or the second image.
    Type: Application
    Filed: February 3, 2021
    Publication date: December 23, 2021
    Inventors: Jian MA, Shen-Ge WANG, Sergiu Radu GOMA
  • Publication number: 20210385365
    Abstract: Methods, systems, and devices for display notch mitigation for cameras and projectors are described. A device may support receiving a plurality of light rays via an upper surface of a prism. The prism and a camera assembly of the device are positioned behind a display substrate of the device. The device may support reflecting the plurality of light rays across a reflection surface. The reflection surface may form an angle with the upper surface of the prism. The device may receiver the plurality of light rays via the camera assembly positioned behind the display substrate based on reflecting the plurality of light rays across the reflection surface. The device may additionally support emitting a plurality of light rays via a projector assembly, reflecting the plurality of light rays across the reflection surface, and emitting the plurality of light rays via the upper surface of the prism.
    Type: Application
    Filed: June 5, 2020
    Publication date: December 9, 2021
    Inventors: Jian Ma, Sergiu Radu Goma
  • Publication number: 20210210543
    Abstract: Aspects of the present disclosure relate to an image sensor. An example apparatus includes an image sensor including one or more pixels. Each pixel of the one or more pixels includes a photodetector, and the photodetector includes a photosensitive surface including germanium. In some implementations, the photodetector includes a photodiode including an intrinsic silicon layer doped with germanium or including germanium crystals. The intrinsic layer may be between a p? layer and an n? layer not including germanium. The intrinsic layer may be configured to absorb photons of the light received at the intrinsic layer. The light may include one or more reflections of an emitted light for active depth sensing. For example, the emitted light may be frequency modulated and having a first wavelength for indirect time-of-flight depth sensing. Sampling circuits may generate voltages indicating a phase difference between the emitted light and a reflection of the emitted light.
    Type: Application
    Filed: January 6, 2020
    Publication date: July 8, 2021
    Inventors: Biay-Cheng HSEIH, Sergiu Radu GOMA
  • Patent number: 11006041
    Abstract: Aspects relate to digital imaging. An example method includes receiving a first image frame of a scene captured by a first image sensor. The method also includes receiving a second image frame of the scene captured by a second image sensor. The second image frame is captured concurrently with capture of the first image frame. The method also includes receiving a third image frame of the scene captured by a third image sensor. The third image frame is captured concurrently with capture of the first image frame. The method also includes generating a combined image from the first image frame, the second image frame, and the third image frame. The combined image includes a first field of view that is wider than a field of view of the first image frame.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: May 11, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Jian Ma, Sergiu Radu Goma
  • Publication number: 20210067662
    Abstract: This disclosure provides systems, methods, and apparatuses for sensing a scene. In one aspect, a device may illuminate the scene using a sequence of two or more periods. Each period may include a transmission portion during which a plurality of light pulses are emitted onto the scene. Each period may include a non-transmission portion corresponding to an absence of emitted light. The device may receive, during each transmission portion, a plurality of light pulses reflected from the scene. The device may continuously accumulate photoelectric charge indicative of the received light pulses during an entirety of the sequence. The device may transfer the accumulated photoelectric charge to a readout circuit after an end of the sequence.
    Type: Application
    Filed: August 26, 2019
    Publication date: March 4, 2021
    Inventors: Jian Ma, Biay-Cheng Hseih, Sergiu Radu Goma
  • Publication number: 20200386540
    Abstract: Aspects of the present disclosure relate to depth sensing using a device. An example device includes a light projector configured to project light in a first and a second distribution. The first and the second distribution include a flood projection when the device operates in a first mode and a pattern projection when the device operates in a second mode, respectively. The example device includes a receiver configured to detect reflections of light projected by the light projector. The example device includes a processor connected to a memory storing instructions. The processor is configured to determine first depth information based on reflections detected by the receiver when the device operates in the first mode, determine second depth information based on reflections detected by the receiver when the device operates in the second mode, and resolve multipath interference (MPI) using the first depth information and the second depth information.
    Type: Application
    Filed: November 13, 2019
    Publication date: December 10, 2020
    Inventors: Biay-Cheng Hseih, Jian Ma, Sergiu Radu Goma
  • Patent number: 10735698
    Abstract: Aspects of the present disclosure relate to systems and methods for determining a resampler for resampling or converting non-Bayer patter color filter array image data to Bayer pattern image data. An example device may include a camera having an image sensor with a non-Bayer pattern color filter array configured to capture non-Bayer pattern image data for an image. The example device also may include a memory and a processor coupled to the memory. The processor may be configured to receive the non-Bayer pattern image data from the image sensor, divide the non-Bayer pattern image data into portions, determine a sampling filter corresponding to the portions, and determine, based on the determined sampling filter, a resampler for converting non-Bayer pattern image data to Bayer-pattern image data.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: August 4, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Hasib Ahmed Siddiqui, Kalin Mitkov Atanassov, Sergiu Radu Goma
  • Patent number: 10608036
    Abstract: Various embodiments are directed to a light pipe. The light pipe may include a channel within a substrate of an image sensor. The channel may be formed by a plurality of layers. The plurality of layers may include a first layer and a second layer. The second layer may be spaced apart from the first layer along an axis of the channel.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: March 31, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Jian Ma, Biay-Cheng Hseih, Sergiu Radu Goma
  • Patent number: 10419703
    Abstract: Aspects relate to a depth sensing system for capturing an image containing depth information of an object. In one embodiment, a depth sensing device for use in conjunction with multiple depth sensing devices for capturing an image containing depth information of an object comprises a near-infrared transmitter comprising a laser capable of producing a near infra-red light beam, a diffractive optical element positioned to receive a light beam emitted from the laser, the diffractive optical element, a collimating lens, and a near-infrared receiver coupled to the transmitter in a relative position, the receiver comprising a sensor assembly capable of producing an image of the received light, the depth sensing device being configured to transmit and receive near infra-red light beams during a time period that is different than any of the other of two or more transmitter-receiver pairs of devices in communication with the depth sensing device.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: September 17, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Sergiu Radu Goma, Kalin Mitkov Atanassov
  • Patent number: 10404969
    Abstract: Systems, apparatus, and methods for generating a fused depth map from one or more individual depth maps, wherein the fused depth map is configured to provide robust depth estimation for points within the depth map. The methods, apparatus, or systems may comprise components that identify a field of view (FOV) of an imaging device configured to capture an image of the FOV and select a first depth sensing method. The system or method may sense a depth of the FOV with respect to the imaging device using the first selected depth sensing method and generate a first depth map of the FOV based on the sensed depth of the first selected depth sensing method. The system or method may also identify a region of one or more points of the first depth map having one or more inaccurate depth measurements and determine if additional depth sensing is needed.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: September 3, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Albrecht Johannes Lindner, Kalin Mitkov Atanassov, Sergiu Radu Goma
  • Publication number: 20190236794
    Abstract: A method performed by an electronic device is described. The method includes obtaining a first image from a first camera, the first camera having a first focal length and a first field of view. The method also includes obtaining a second image from a second camera, the second camera having a second focal length and a second field of view disposed within the first field of view. The method further includes aligning at least a portion of the first image and at least a portion of the second image to produce aligned images. The method additionally includes fusing the aligned images based on a diffusion kernel to produce a fused image. The diffusion kernel indicates a threshold level over a gray level range. The method also includes outputting the fused image. The method may be performed for each of a plurality of frames of a video feed.
    Type: Application
    Filed: April 4, 2019
    Publication date: August 1, 2019
    Inventors: James Wilson Nash, Kalin Mitkov Atanassov, Sergiu Radu Goma
  • Patent number: 10368053
    Abstract: A receiver sensor captures a plurality of images, at two or more (different) exposure times, of a scene onto which a code mask is projected. The two or more of the plurality of images are combined by extracting decodable portions of the code mask from each image to generate a combined image. Alternatively, two receiver sensors, each at a different exposure time, are used to capture a plurality of images. The first and second images are then combined by extracting decodable portions of the code mask from each image to generate a combined image. Depth information for the scene may then be ascertained based on the combined image and using the code mask.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: July 30, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Judit Martinez Bauza, Kalin Mitkov Atanassov, Sergiu Radu Goma
  • Patent number: 10313640
    Abstract: Exemplary embodiments are directed to configurable demodulation of image data produced by an image sensor. In some aspects, a method includes receiving information indicating a configuration of the image sensor. In some aspects, the information may indicate a configuration of sensor elements and/or corresponding color filters for the sensor elements. A modulation function may then be generated based on the information. In some aspects, the method also includes demodulating the image data based on the generated modulation function to determine chrominance and luminance components of the image data, and generating the second image based on the determined chrominance and luminance components.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: June 4, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Hasib Ahmed Siddiqui, Kalin Mitkov Atanassov, Sergiu Radu Goma