Patents by Inventor Ping Wah Wong

Ping Wah Wong 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: 20190238770
    Abstract: An image sensor and signal processing circuit therefor include a readout circuit, calibration circuitry that calculates a correction coefficient for an effective pixel circuit based on a calibration signal, adjustment circuitry that updates the correction coefficient based on an optical black pixel signal, and correction circuitry that applies the updated correction coefficient to the effective pixel signal and generates an output signal.
    Type: Application
    Filed: February 1, 2018
    Publication date: August 1, 2019
    Inventors: Tomohiro Sekiguchi, Ping Wah Wong
  • Publication number: 20190227169
    Abstract: A time-of-flight camera includes a light generator that generates an emitted light wave, a light sensor that receives a reflected light wave that corresponds to the emitted light wave reflected from an object, and distance determination circuitry. The distance determination circuitry determines response signals based on the reflected light wave, calculates signs corresponding to differences between pairs of the response signals, determines a phase region based on the signs, and determines a distance between the time-of-flight camera and the object based on a ratio of the differences.
    Type: Application
    Filed: January 24, 2018
    Publication date: July 25, 2019
    Inventor: Ping Wah Wong
  • Patent number: 10097804
    Abstract: Improvement of image quality is realizable. An adding unit generates a summed value corresponding to a sum of all values of respective pixel signals of a plurality of first pixels each of which has sensitivities to visible light and invisible light. The values are weighted by first weighting coefficients that are different from each other and determined such that a difference between a sum of the sensitivities of the first pixels to the visible light and a sensitivity of a second pixel to the visible light, which second pixel has sensitivities to the visible light and the invisible light, becomes smaller than a predetermined tolerance in a state that the sensitivities of the first pixels to the visible light are weighted by the first weighting coefficients and that the sensitivity of the second pixel to the visible light is weighted by a second weighting coefficient. A weighting processing unit weights a pixel signal of the second pixel by the second weighting coefficient.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: October 9, 2018
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Yasushi Sato, Masatsugu Fukunaga, Ping Wah Wong
  • Patent number: 10075640
    Abstract: An electronic device including a motion sensor and motion correction circuitry. The motion sensor detects motion of the electronic device and outputs motion information based on the detected motion. The motion correction circuitry corrects raw domain image data, received from an image sensor that has a block-based analog-to-digital converter architecture, based on the motion information. The corrected image data is output in a same raw domain image data format as the uncorrected raw domain image data.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: September 11, 2018
    Assignee: Sony Corporation
    Inventor: Ping Wah Wong
  • Patent number: 9894296
    Abstract: A method of processing an image includes receiving pixel data from a pixel array, the pixel data including a plurality of linear pixel responses from a corresponding plurality of linear pixel circuits of the pixel array and a plurality of logarithmic pixel responses from a corresponding plurality of logarithmic pixel circuits; determining whether a linear or logarithmic pixel response is clipped; calculating a plurality of directionally-interpolated output pixel values for corresponding ones of the plurality of linear pixel circuits and the plurality of logarithmic pixel circuits; in a case where the linear or logarithmic pixel response is clipped, using a corresponding directionally—interpolated output pixel value as an output pixel value; in a case where the linear or logarithmic pixel response is not clipped, using the linear pixel response or the logarithmic pixel response as the output pixel value; and constructing an output image using a plurality of the output pixel values.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: February 13, 2018
    Assignee: Sony Corporation
    Inventor: Ping Wah Wong
  • Patent number: 9892487
    Abstract: A signal processing circuit, a method of processing an image, and an imaging device are disclosed. In one example of the present disclosure, the signal processing circuit includes image processing circuitry configured to receive a first set of signals corresponding to linear pixels in an array of pixels, receive a second set of signals corresponding to logarithmic pixels in the array of pixels, perform a linear pixel interpolation using the first set of signals to determine a linear rgb value associated with a given pixel in the array of pixels, perform a logarithmic pixel interpolation using the second set of signals to determine a logarithmic RGB value associated with the given pixel in the array of pixels, and combine the linear rgb value and the logarithmic RGB value to generate a combined pixel value associated with the given pixel in the array of pixels.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: February 13, 2018
    Assignee: Sony Corporation
    Inventor: Ping Wah Wong
  • Patent number: 9832402
    Abstract: Row and column noise calibration and correction includes obtaining pixel values from a row/column of calibration pixels and from a corresponding row/column of bright pixels. Defective calibration pixels are detected based on the pixel values of the row/column of calibration pixels. For example, calibration pixels with pixel values outside a predetermined range may be detected as defective. The pixel values of defective calibration pixels may be removed from the pixel data, or a corrected pixel value substituted in lieu thereof. An average of the pixel values of the row/column of calibration pixels is used to correct the pixel values of the corresponding row/column of bright pixels.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: November 28, 2017
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Edward Elikhis, Ping Wah Wong
  • Patent number: 9813652
    Abstract: An image sensing device may include one or more compression modules that compress digitized pixel reset values obtained from light sensing elements. The device may perform a CDS operation in which the compressed reset values are stored, decompressed, and then subtracted from light dependent values obtained from the light sensing elements. The compressed reset values may also be output from the device without CDS subtraction having been performed. The light dependent values may also be compressed. CDS corrected output pixel values may also be compressed.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: November 7, 2017
    Assignees: Sony Corporation, Pixim, Inc.
    Inventors: Ping Wah Wong, Thomas R. Ayers
  • Publication number: 20170195574
    Abstract: An electronic device including a motion sensor and motion correction circuitry. The motion sensor detects motion of the electronic device and outputs motion information based on the detected motion. The motion correction circuitry corrects raw domain image data, received from an image sensor that has a block-based analog-to-digital converter architecture, based on the motion information. The corrected image data is output in a same raw domain image data format as the uncorrected raw domain image data.
    Type: Application
    Filed: December 31, 2015
    Publication date: July 6, 2017
    Inventor: Ping Wah Wong
  • Publication number: 20170163954
    Abstract: Improvement of image quality is realizable. An adding unit generates a summed value corresponding to a sum of all values of respective pixel signals of a plurality of first pixels each of which has sensitivities to visible light and invisible light. The values are weighted by first weighting coefficients that are different from each other and determined such that a difference between a sum of the sensitivities of the first pixels to the visible light and a sensitivity of a second pixel to the visible light, which second pixel has sensitivities to the visible light and the invisible light, becomes smaller than a predetermined tolerance in a state that the sensitivities of the first pixels to the visible light are weighted by the first weighting coefficients and that the sensitivity of the second pixel to the visible light is weighted by a second weighting coefficient. A weighting processing unit weights a pixel signal of the second pixel by the second weighting coefficient.
    Type: Application
    Filed: April 2, 2015
    Publication date: June 8, 2017
    Applicant: SONY CORPORATION
    Inventors: YASUSHI SATO, MASATSUGU FUKUNAGA, Ping Wah Wong
  • Patent number: 9654711
    Abstract: A system and method for scaling an image includes receiving raw image data comprising input pixel values which correspond to pixels of an image sensor, filtering pixels in a spatial domain, and filtering pixels in a frequency domain according to an oversampling ratio. The system and method may also include outputting scaled image data as output pixel values, which correspond to subgroups of the input pixel values. The filtering may be done according to a Bayer-consistent ruleset which includes a set of filter weights and a series of scaling rules. The oversampling ratio is set to minimize an error after the filtering in the spatial domain and the filtering in the frequency domain.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: May 16, 2017
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Thomas Richard Ayers, Edward Elikhis, Ping Wah Wong
  • Publication number: 20170126999
    Abstract: Row and column noise calibration and correction includes obtaining pixel values from a row/column of calibration pixels and from a corresponding row/column of bright pixels. Defective calibration pixels are detected based on the pixel values of the row/column of calibration pixels. For example, calibration pixels with pixel values outside a predetermined range may be detected as defective. The pixel values of defective calibration pixels may be removed from the pixel data, or a corrected pixel value substituted in lieu thereof. An average of the pixel values of the row/column of calibration pixels is used to correct the pixel values of the corresponding row/column of bright pixels.
    Type: Application
    Filed: October 29, 2015
    Publication date: May 4, 2017
    Inventors: Edward Elikhis, Ping Wah Wong
  • Publication number: 20170085818
    Abstract: A system and method for scaling an image includes receiving raw image data comprising input pixel values which correspond to pixels of an image sensor, filtering pixels in a spatial domain, and filtering pixels in a frequency domain according to an oversampling ratio. The system and method may also include outputting scaled image data as output pixel values, which correspond to subgroups of the input pixel values. The filtering may be done according to a Bayer-consistent ruleset which includes a set of filter weights and a series of scaling rules. The oversampling ratio is set to minimize an error after the filtering in the spatial domain and the filtering in the frequency domain.
    Type: Application
    Filed: September 17, 2015
    Publication date: March 23, 2017
    Inventors: Thomas Richard Ayers, Edward Elikhis, Ping Wah Wong
  • Patent number: 9449366
    Abstract: A system and method for scaling an image includes receiving raw image data comprising input pixel values which correspond to pixels of an image sensor; and filtering pixels according to a Bayer-consistent ruleset. The system and method may also include outputting scaled image data as output pixel values, which correspond to subgroups of the input pixel values. The Bayer-consistent ruleset includes a set of filter weights and a series of scaling rules. The Bayer-consistent ruleset results in a scaled image having a high degree of Bayer-consistency.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: September 20, 2016
    Assignee: Sony Corporation
    Inventors: Ping Wah Wong, Thomas Richard Ayers
  • Publication number: 20160119570
    Abstract: An image sensing device may include one or more compression modules that compress digitized pixel reset values obtained from light sensing elements. The device may perform a CDS operation in which the compressed reset values are stored, decompressed, and then subtracted from light dependent values obtained from the light sensing elements. The compressed reset values may also be output from the device without CDS subtraction having been performed. The light dependent values may also be compressed. CDS corrected output pixel values may also be compressed.
    Type: Application
    Filed: October 29, 2015
    Publication date: April 28, 2016
    Inventors: Ping Wah Wong, Thomas R. Ayers
  • Publication number: 20160093016
    Abstract: A system and method for scaling an image includes receiving raw image data comprising input pixel values which correspond to pixels of an image sensor; and filtering pixels according to a Bayer-consistent ruleset. The system and method may also include outputting scaled image data as output pixel values, which correspond to subgroups of the input pixel values. The Bayer-consistent ruleset includes a set of filter weights and a series of scaling rules. The Bayer-consistent ruleset results in a scaled image having a high degree of Bayer-consistency.
    Type: Application
    Filed: September 25, 2014
    Publication date: March 31, 2016
    Inventors: Ping Wah Wong, Thomas Richard Ayers
  • Patent number: 9077924
    Abstract: An image sensing device and image sensing method are described herein. By way of example, the imaging sensing device includes a two-dimensional array of light sensing elements, each light sensing element being configured to generate an output signal indicative of an intensity level of light impinging on the light sensing element, one or more analog-to-digital converters configured to digitize output signals read out from the array of light sensing elements to generate digital output pixel values, a control circuit configured to generate digital pixel reset values, and a compression module configured to receive the digital pixel reset values and to generate a compressed digital pixel reset value corresponding to each digital pixel reset value.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: July 7, 2015
    Assignees: Sony Corporation, Pixim, Inc.
    Inventors: Ping Wah Wong, Thomas Richard Ayers
  • Publication number: 20150062377
    Abstract: An image sensing device and image sensing method are described herein. By way of example, the imaging sensing device includes a two-dimensional array of light sensing elements, each light sensing element being configured to generate an output signal indicative of an intensity level of light impinging on the light sensing element, one or more analog-to-digital converters configured to digitize output signals read out from the array of light sensing elements to generate digital output pixel values, a control circuit configured to generate digital pixel reset values, and a compression module configured to receive the digital pixel reset values and to generate a compressed digital pixel reset value corresponding to each digital pixel reset value.
    Type: Application
    Filed: August 29, 2013
    Publication date: March 5, 2015
    Applicants: PIXIM, INC., SONY CORPORATION
    Inventors: Ping Wah Wong, Thomas Richard Ayers
  • Patent number: 8953075
    Abstract: An active pixel CMOS image sensor implements full frame digital correlated double sampling (CDS) with global shutter where all the pixels in the image sensor are reset at substantially the same time and all the pixels in the image sensor integrate incident light at substantially the same time and for substantially the same time duration and correlated double sampling cancellation is performed in the digital domain. In one embodiment, the image sensing device includes an array of light sensing elements, a timing and control circuit and analog-to-digital converters. The timing and control circuit is operative to reset the light sensing elements in the array and to control the array of light sensing elements to integrate incident light. The pixel reset values are cancelled from the corresponding light dependent pixel values for each of the light sensing elements to generate correlated double sampling (CDS) corrected digital output pixel values.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: February 10, 2015
    Assignee: Pixim, Inc.
    Inventors: Thomas Ayers, Frederick Thomas Brady, Jinsuk Kang, Ping Wah Wong
  • Publication number: 20130258151
    Abstract: An active pixel CMOS image sensor implements full frame digital correlated double sampling (CDS) with global shutter where all the pixels in the image sensor are reset at substantially the same time and all the pixels in the image sensor integrate incident light at substantially the same time and for substantially the same time duration and correlated double sampling cancellation is performed in the digital domain. In one embodiment, the image sensing device includes an array of light sensing elements, a timing and control circuit and analog-to-digital converters. The timing and control circuit is operative to reset the light sensing elements in the array and to control the array of light sensing elements to integrate incident light. The pixel reset values are cancelled from the corresponding light dependent pixel values for each of the light sensing elements to generate correlated double sampling (CDS) corrected digital output pixel values.
    Type: Application
    Filed: March 30, 2012
    Publication date: October 3, 2013
    Applicant: PIXIM, INC.
    Inventors: Thomas Ayers, Frederick Thomas Brady, Jinsuk Kang, Ping Wah Wong