Patents by Inventor JONATHAN GAN

JONATHAN GAN 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: 20250240413
    Abstract: In some embodiments, a video decoder decodes a video bitstream into video frames. A decoder decodes frames of a video from a video bitstream. The decoder further performs inter prediction to decode a current frame of the video by using the decoded frames as reference frames. Performing the inter prediction includes performing reference picture resampling by upsampling a reference frame for the current frame using one or more filters selected from a set of 32 6-tap interpolation filters. This set of interpolation filters is also used for interpolating chroma components for motion compensation. The decoded frame and the decoded current frame are output for display.
    Type: Application
    Filed: April 21, 2023
    Publication date: July 24, 2025
    Inventors: Jonathan GAN, Yue YU, Haoping YU
  • Publication number: 20250220214
    Abstract: A method of decoding a video, a method of encoding a video, and a non-transitory computer-readable storage medium storing a bitstream are provided. In the method of decoding, an additional bit count M indicating a quantity of addition general constraints information (GCI) bits included in a bitstream of the video is decoded from the bitstream of the video. Here, an expected value of the additional bit count M is 0, 6 or greater than 6. In response to determining that a value of the additional bit count M is equal to 6, six flag bits representing six respective flags indicating six respective additional coding tools to be constrained for the video are decoded from the bitstream of the video. A remaining portion of the bitstream of the video is decoded into images based, at least in part, upon constraints for the six additional coding tools indicated by the six flags.
    Type: Application
    Filed: March 21, 2025
    Publication date: July 3, 2025
    Inventors: Jonathan GAN, Yue YU, Haoping YU
  • Publication number: 20250193386
    Abstract: In some embodiments, a video encoder encodes a video into a video bitstream. The video encoder accesses a set of frames of the video and performs inter prediction for the set of frames using a set of integerized interpolation filters to generate prediction residuals to be encoded into the video bitstream. The set of integerized interpolation filters are generated by integerizing a set of interpolation filters, each of the set of interpolation filters having floating-point filter coefficients. For each interpolation filter, two integerized filter coefficient values are generated for each filter coefficient and a set of filter candidates are generated based on the two integerized values for each filter coefficient. An error metric for each filter candidate is calculated and an integerized interpolation filter having the lowest error metric is selected for the interpolation filter from the set of filter candidates.
    Type: Application
    Filed: March 2, 2023
    Publication date: June 12, 2025
    Inventors: Jonathan GAN, Yue YU, Haoping YU
  • Publication number: 20250184538
    Abstract: A video decoder reconstructs a current frame of a video from a video bitstream based on a reconstructed reference frame. For a block of the current frame, the video decoder identifies a reference block in the reference frame based on a motion vector associated with the block. The decoder determines the slope and offset parameters of a local illumination compensation model based on reconstructed pixels in the current frame and the reference frame. The video decoder decodes, from the video bitstream, an adjustment to the slope and updates the slope by applying the decoded adjustment. The decoder further determines an adjusted offset parameter for the local illumination compensation model. The decoder generates predicted pixels for the block by at least applying, to the reference block, the local illumination compensation model with the updated parameters.
    Type: Application
    Filed: March 3, 2023
    Publication date: June 5, 2025
    Inventors: Yue YU, Haoping YU, Jonathan GAN
  • Publication number: 20250184518
    Abstract: A system and method of decoding a sub-block of residual coefficients of a transform block from a video bitstream. The method comprises determining whether sign bit hiding is used for the sub-block, the determination based on a value of a transform skip flag determined for the sub-block and a value of a sign bit hiding flag associated with the sub-block; if sign bit hiding is not used, decoding a number of sign bits equal to a number of significant coefficients in the subblock; and decoding the sub-block by reconstructing the residual coefficients of the sub-block using the decoded sign bits.
    Type: Application
    Filed: January 31, 2025
    Publication date: June 5, 2025
    Inventor: Jonathan GAN
  • Publication number: 20250184519
    Abstract: A system and method of decoding a sub-block of residual coefficients of a transform block from a video bitstream. The method comprises determining whether sign bit hiding is used for the sub-block, the determination based on a value of a transform skip flag determined for the sub-block and a value of a sign bit hiding flag associated with the sub-block; if sign bit hiding is not used, decoding a number of sign bits equal to a number of significant coefficients in the subblock; and decoding the sub-block by reconstructing the residual coefficients of the sub-block using the decoded sign bits.
    Type: Application
    Filed: January 31, 2025
    Publication date: June 5, 2025
    Inventor: Jonathan GAN
  • Publication number: 20250184516
    Abstract: A system and method of decoding a sub-block of residual coefficients of a transform block from a video bitstream. The method comprises determining whether sign bit hiding is used for the sub-block, the determination based on a value of a transform skip flag determined for the sub-block and a value of a sign bit hiding flag associated with the sub-block; if sign bit hiding is not used, decoding a number of sign bits equal to a number of significant coefficients in the subblock; and decoding the sub-block by reconstructing the residual coefficients of the sub-block using the decoded sign bits.
    Type: Application
    Filed: January 31, 2025
    Publication date: June 5, 2025
    Inventor: Jonathan GAN
  • Publication number: 20250184517
    Abstract: A system and method of decoding a sub-block of residual coefficients of a transform block from a video bitstream. The method comprises determining whether sign bit hiding is used for the sub-block, the determination based on a value of a transform skip flag determined for the sub-block and a value of a sign bit hiding flag associated with the sub-block; if sign bit hiding is not used, decoding a number of sign bits equal to a number of significant coefficients in the subblock; and decoding the sub-block by reconstructing the residual coefficients of the sub-block using the decoded sign bits.
    Type: Application
    Filed: January 31, 2025
    Publication date: June 5, 2025
    Inventor: Jonathan GAN
  • Publication number: 20250159223
    Abstract: A method for decoding a video includes: extracting a GCI flag from a bitstream of the video; determining that one or more general constraints are imposed for the video based on a value of the GCI flag; in response to determining that one or more general constraints are imposed for the video, extracting, from the bitstream of the video, a value indicating a quantity of additional bits included in the bitstream, the additional bits comprising flag bits indicating respective additional coding tools to be constrained for the video; determining that the value is no greater than 5; and in response to determining that the value is no greater than 5, extracting one or more bits from the bitstream, wherein a number of the one or more bits equals to the value, and decoding a remaining portion of the bitstream into images independent of the one or more bits.
    Type: Application
    Filed: November 8, 2022
    Publication date: May 15, 2025
    Inventors: Jonathan GAN, Yue YU, Haoping YU
  • Patent number: 12294728
    Abstract: A decoding method, system and storage medium are disclosed. In the method, a video decoder decodes a video from a bitstream of the video. The video decoder decodes, from the bitstream, an additional bit count M indicating a quantity of additional general constraints information (GCI) bits included in the bitstream. The additional bits include flag bits indicating respective additional coding tools to be constrained for the video, and an expected value of the additional bit count is 0, 6 or greater than 6. The decoder decodes M?6 bits that follow six flag bits in the bitstream in response to determining that the decoded additional bit count M is greater than 6. The decoder further decodes the remaining portion of the bitstream into images independent of the decoded M?6 bits and based, at least in part, upon constraints specified for the respective additional coding tools by the six flag bits.
    Type: Grant
    Filed: July 5, 2024
    Date of Patent: May 6, 2025
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jonathan Gan, Yue Yu, Haoping Yu
  • Publication number: 20250133232
    Abstract: A method for decoding an intra-predicted frame of a video that is encoded with cross-component prediction includes reconstructing a luma block of a frame of the video from a video bitstream representing the video; reconstructing a chroma block of the frame that corresponds to the luma block based on the reconstructed luma block by: determining a first parameter and a second parameter of a cross-component linear model based on a first set of reconstructed pixels in a chroma component of the frame and a second set of samples generated from reconstructed pixels in a luma component of the frame, decoding, from the video bitstream, a first adjustment to the first parameter and a second adjustment to the second parameter, adjusting the first parameter and the second parameter, and reconstructing pixels of the chroma block; and causing the reconstructed frame to be displayed.
    Type: Application
    Filed: April 13, 2023
    Publication date: April 24, 2025
    Inventors: Yue YU, Jonathan GAN, Haoping YU
  • Publication number: 20250097445
    Abstract: A method for decoding a video includes that: a decoder decodes a video from a bitstream of the video; the decoder accesses a bitstream of the video and extracts a GCI flag from the bitstream; the decoder determines that one or more general constraints are imposed for the video based on the GCI flag value and extracts, from the bitstream of the video, a value indicating a quantity of additional bits included in the bitstream of the video, the additional bits include flag bits indicating respective additional coding tools to be constrained for the video; if the value is greater than five, the decoder extracts six flags from the bitstream of the video that indicate respective constraints for six additional coding tools; and the decoder decodes the bitstream of the video into images based on the constraints for the six additional coding tools indicated by the six flags.
    Type: Application
    Filed: November 29, 2024
    Publication date: March 20, 2025
    Inventors: Jonathan GAN, Yue YU, Haoping YU
  • Patent number: 12256093
    Abstract: A system and method of decoding a sub-block of residual coefficients of a transform block from a video bitstream. The method comprises determining whether sign bit hiding is used for the sub-block, the determination based on a value of a transform skip flag determined for the sub-block and a value of a sign bit hiding flag associated with the sub-block; if sign bit hiding is not used, decoding a number of sign bits equal to a number of significant coefficients in the subblock; and decoding the sub-block by reconstructing the residual coefficients of the sub-block using the decoded sign bits.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: March 18, 2025
    Assignee: Canon Kabushiki Kaisha
    Inventor: Jonathan Gan
  • Publication number: 20250039380
    Abstract: A video decoder decodes a current transform block from a video bitstream. For a transform block encoded with regular residual coding, when a subblock flag sb_coded_flag is not present, the decoder infers the flag to be 1 if the subblock is a DC subblock and/or the last subblock in the transform block containing a non-zero coefficient level. Otherwise, sb_coded_flag is inferred to be 0. For a transform block encoded with regular residual coding, when the sb_coded_flag is present, the decoder determines a context index for an arithmetic decoding process based on the sb_coded_flag of previous subblocks and decodes the sb_coded_flag of the subblock using the arithmetic decoding process. The decoder decodes the transform block based on the determined sb_coded_flag.
    Type: Application
    Filed: October 17, 2024
    Publication date: January 30, 2025
    Inventors: Jonathan GAN, Yue YU
  • Patent number: 12200240
    Abstract: A method for decoding a video includes that: a decoder decodes a video from a bitstream of the video; the decoder accesses a bitstream of the video and extracts a GCI flag from the bitstream; the decoder determines that one or more general constraints are imposed for the video based on the GCI flag value and extracts, from the bitstream of the video, a value indicating a quantity of additional bits included in the bitstream of the video, the additional bits include flag bits indicating respective additional coding tools to be constrained for the video; if the value is greater than five, the decoder extracts six flags from the bitstream of the video that indicate respective constraints for six additional coding tools; and the decoder decodes the bitstream of the video into images based on the constraints for the six additional coding tools indicated by the six flags.
    Type: Grant
    Filed: June 25, 2024
    Date of Patent: January 14, 2025
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jonathan Gan, Yue Yu, Haoping Yu
  • Publication number: 20240394928
    Abstract: A system and method of decoding information for data generated by a first part of a neural network. The method comprises decoding information for determining at least a starting layer of a second part of the neural network, the neural network including at least the first part and the second part, the second part being different from the first part; and determining the starting layer of the second part of the neural network based on the decoded information.
    Type: Application
    Filed: July 18, 2022
    Publication date: November 28, 2024
    Inventor: Jonathan GAN
  • Publication number: 20240364910
    Abstract: A method for decoding a video includes that: a decoder decodes a video from a bitstream of the video; the decoder accesses a bitstream of the video and extracts a GCI flag from the bitstream; the decoder determines that one or more general constraints are imposed for the video based on the GCI flag value and extracts, from the bitstream of the video, a value indicating a quantity of additional bits included in the bitstream of the video, the additional bits include flag bits indicating respective additional coding tools to be constrained for the video; if the value is greater than five, the decoder extracts six flags from the bitstream of the video that indicate respective constraints for six additional coding tools; and the decoder decodes the bitstream of the video into images based on the constraints for the six additional coding tools indicated by the six flags.
    Type: Application
    Filed: June 25, 2024
    Publication date: October 31, 2024
    Inventors: Jonathan GAN, Yue YU, Haoping YU
  • Publication number: 20240364907
    Abstract: A decoding method, system and storage medium are disclosed. In the method, a video decoder decodes a video from a bitstream of the video. The video decoder decodes, from the bitstream, an additional bit count M indicating a quantity of additional general constraints information (GCI) bits included in the bitstream. The additional bits include flag bits indicating respective additional coding tools to be constrained for the video, and an expected value of the additional bit count is 0, 6 or greater than 6. The decoder decodes M-6 bits that follow six flag bits in the bitstream in response to determining that the decoded additional bit count M is greater than 6. The decoder further decodes the remaining portion of the bitstream into images independent of the decoded M-6 bits and based, at least in part, upon constraints specified for the respective additional coding tools by the six flag bits.
    Type: Application
    Filed: July 5, 2024
    Publication date: October 31, 2024
    Inventors: Jonathan GAN, Yue YU, Haoping YU
  • Publication number: 20240205402
    Abstract: A method of decoding feature maps from encoded data. A parameter related to quantisation is determined. According to the parameter, inverse quantisation is performed for samples decoded from the encoded data to decode the feature maps. For at least a part of the samples decoded from the encoded data, one parameter is shared by a group of samples corresponding to a plurality of feature maps.
    Type: Application
    Filed: March 11, 2022
    Publication date: June 20, 2024
    Inventors: Christopher James Rosewarne, Jonathan GAN
  • Patent number: 11693676
    Abstract: A computer implemented method of creating essays on a computer device is provided, comprising: storing, in a memory storage device in the computer device, one or more files; creating, in an essay drafting software application, a first split screen workspace graphical user interface (GUI), wherein the first split screen workspace GUI includes an essay viewing area and a file viewing area; adding the one or more files to the file viewing area of the first split screen workspace GUI; adding one or more text pages to the essay viewing area of the first split screen workspace GUI; entering text to a first of the one or more text pages using a text editor software application; accessing a first file of the one or more files in the file viewing area of the first split screen workspace GUI through a keystroke performed on one or more keys on a keyboard, wherein the keyboard is adapted to operate as a data and command interface with the computer device and the essay drafting software application; and copying informati
    Type: Grant
    Filed: June 22, 2022
    Date of Patent: July 4, 2023
    Assignee: KAHANA GROUP INC.
    Inventors: Adam Kershner, Jonathan Gans