Patents by Inventor Limin Wang

Limin Wang 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).

  • BIT DEPTH VARIABLE FOR HIGH PRECISION DATA IN WEIGHTED PREDICTION SYNTAX AND SEMANTICS
    Publication number: 20210314607
    Abstract: Particular embodiments provide a variable, BitDepth, that may be set at a value based on a number of bits used to represent pixels in pictures of a video. The variable may be used in syntax elements in HEVC, such as the HEVC range extension, but other coding standards may be used. By using the variable, different resolutions for the video may be accommodated during the encoding and decoding process. For example, the number of pixels in the pictures may be represented by 8 bits, 10 bits, 12 bits, or another number of bits depending on the resolution. Using the BitDepth variable in the syntax provides flexibility in the motion estimation and motion compensation process. For example, syntax elements used in the weighted prediction process may take into account different numbers of bits used to represent the pictures.
    Type: Application
    Filed: June 18, 2021
    Publication date: October 7, 2021
    Applicant: ARRIS Enterprises LLC
    Inventors: Yue Yu, Limin Wang
  • BIT DEPTH VARIABLE FOR HIGH PRECISION DATA IN WEIGHTED PREDICTION SYNTAX AND SEMANTICS
    Publication number: 20210314609
    Abstract: Particular embodiments provide a variable, BitDepth, that may be set at a value based on a number of bits used to represent pixels in pictures of a video. The variable may be used in syntax elements in HEVC, such as the HEVC range extension, but other coding standards may be used. By using the variable, different resolutions for the video may be accommodated during the encoding and decoding process. For example, the number of pixels in the pictures may be represented by 8 bits, 10 bits, 12 bits, or another number of bits depending on the resolution. Using the BitDepth variable in the syntax provides flexibility in the motion estimation and motion compensation process. For example, syntax elements used in the weighted prediction process may take into account different numbers of bits used to represent the pictures.
    Type: Application
    Filed: June 18, 2021
    Publication date: October 7, 2021
    Applicant: ARRIS Enterprises LLC
    Inventors: Yue Yu, Limin Wang
  • COMPENSATION SYSTEM AND COMPENSATION METHOD FOR LIFE ATTENUATION OF OLED DEVICE
    Publication number: 20210304671
    Abstract: A compensation system and a compensation method for life attenuation of an organic light emitting diode (OLED) device are provided to include a display data input module, an equivalent life calculation module, an OLED device attenuation degree calculation module, a display position weight ratio module, a life compensation data generation module, and a data compensation and display data output module. The life compensation data generation module is configured to generate final life compensation data according to a feedback result of the OLED device attenuation degree calculation module and the display position weight ratio module.
    Type: Application
    Filed: April 16, 2020
    Publication date: September 30, 2021
    Inventors: Limin WANG, Huasheng SU
  • MULTI-LAYER VIDEO ENCODER/DECODER WITH BASE LAYER INTRA MODE USED FOR ENHANCEMENT LAYER INTRA MODE PREDICTION
    Publication number: 20210274220
    Abstract: Devices and methods for using base layer intra prediction mode for enhancement layer intra mode prediction are disclosed.
    Type: Application
    Filed: May 14, 2021
    Publication date: September 2, 2021
    Inventors: Yue Yu, Limin Wang, Jian Lou
  • REDUCING MOTION VECTOR INFORMATION TRANSMISSION IN BI-DIRECTIONAL TEMPORAL PREDICTION
    Publication number: 20210274192
    Abstract: A method for inter-coding video is provided in which transmission bandwidth requirements associated with second motion vectors for bi-directional temporal prediction is reduced. In the method motion vector information for only one of the two motion vectors for bi-directional temporal prediction can be transmitted together with information on how to derive or construct the second motion vector. Thus, rather than sending express information regarding two motion vectors, express information related to only one motion vector along with information related to reconstruction/derivation of the second motion vector is transmitted, thus reducing bandwidth requirements and increasing coding efficiency.
    Type: Application
    Filed: January 29, 2021
    Publication date: September 2, 2021
    Applicant: ARRIS Enterprises LLC
    Inventors: Krit PANUSOPONE, Yue YU, Limin WANG
  • JVET QUADTREE PLUS BINARY TREE (QTBT) STRUCTURE WITH MULTIPLE ASYMMETRICAL PARTITIONING
    Publication number: 20210266546
    Abstract: A method of partitioning in video coding for JVET, comprising representing a JVET coding tree unit as a root node in a quadtree plus binary tree (QTBT) structure that can have quadtree or binary partitioning of the root node and quadtree or binary trees branching from each of the leaf nodes. The partitioning at any depth can use asymmetric binary partitioning to split a node represented by a leaf node into two child nodes of unequal size, representing the two child nodes as leaf nodes in a binary tree branching from the parent leaf node and coding the child nodes represented by final leaf nodes of the binary tree with JVET, wherein further partitioning of child nodes split from leaf nodes via asymmetric binary partitioning is allowed recursively along the same branch in any order with symmetric partitioning.
    Type: Application
    Filed: May 11, 2021
    Publication date: August 26, 2021
    Inventors: Krit Panusopone, Seungwook Hong, Limin Wang
  • JVET QUADTREE PLUS BINARY TREE (QTBT) STRUCTURE WITH MULTIPLE ASYMMETRICAL PARTITIONING
    Publication number: 20210266545
    Abstract: A method of partitioning in video coding for JVET, comprising representing a JVET coding tree unit as a root node in a quadtree plus binary tree (QTBT) structure that can have quadtree or binary partitioning of the root node and quadtree or binary trees branching from each of the leaf nodes. The partitioning at any depth can use asymmetric binary partitioning to split a node represented by a leaf node into two child nodes of unequal size, representing the two child nodes as leaf nodes in a binary tree branching from the parent leaf node and coding the child nodes represented by final leaf nodes of the binary tree with JVET, wherein further partitioning of child nodes split from leaf nodes via asymmetric binary partitioning is allowed recursively along the same branch in any order with symmetric partitioning.
    Type: Application
    Filed: May 11, 2021
    Publication date: August 26, 2021
    Inventors: Krit Panusopone, Seungwook Hong, Limin Wang
  • JVET QUADTREE PLUS BINARY TREE (QTBT) STRUCTURE WITH MULTIPLE ASYMMETRICAL PARTITIONING
    Publication number: 20210266543
    Abstract: A method of partitioning in video coding for JVET, comprising representing a JVET coding tree unit as a root node in a quadtree plus binary tree (QTBT) structure that can have quadtree or binary partitioning of the root node and quadtree or binary trees branching from each of the leaf nodes. The partitioning at any depth can use asymmetric binary partitioning to split a node represented by a leaf node into two child nodes of unequal size, representing the two child nodes as leaf nodes in a binary tree branching from the parent leaf node and coding the child nodes represented by final leaf nodes of the binary tree with JVET, wherein further partitioning of child nodes split from leaf nodes via asymmetric binary partitioning is allowed recursively along the same branch in any order with symmetric partitioning.
    Type: Application
    Filed: May 11, 2021
    Publication date: August 26, 2021
    Inventors: Krit Panusopone, Seungwook Hong, Limin Wang
  • JVET QUADTREE PLUS BINARY TREE (QTBT) STRUCTURE WITH MULTIPLE ASYMMETRICAL PARTITIONING
    Publication number: 20210266542
    Abstract: A method of partitioning in video coding for JVET, comprising representing a JVET coding tree unit as a root node in a quadtree plus binary tree (QTBT) structure that can have quadtree or binary partitioning of the root node and quadtree or binary trees branching from each of the leaf nodes. The partitioning at any depth can use asymmetric binary partitioning to split a node represented by a leaf node into two child nodes of unequal size, representing the two child nodes as leaf nodes in a binary tree branching from the parent leaf node and coding the child nodes represented by final leaf nodes of the binary tree with JVET, wherein further partitioning of child nodes split from leaf nodes via asymmetric binary partitioning is allowed recursively along the same branch in any order with symmetric partitioning.
    Type: Application
    Filed: May 11, 2021
    Publication date: August 26, 2021
    Inventors: Krit Panusopone, Seungwook Hong, Limin Wang
  • JVET QUADTREE PLUS BINARY TREE (QTBT) STRUCTURE WITH MULTIPLE ASYMMETRICAL PARTITIONING
    Publication number: 20210266544
    Abstract: A method of partitioning in video coding for JVET, comprising representing a JVET coding tree unit as a root node in a quadtree plus binary tree (QTBT) structure that can have quadtree or binary partitioning of the root node and quadtree or binary trees branching from each of the leaf nodes. The partitioning at any depth can use asymmetric binary partitioning to split a node represented by a leaf node into two child nodes of unequal size, representing the two child nodes as leaf nodes in a binary tree branching from the parent leaf node and coding the child nodes represented by final leaf nodes of the binary tree with JVET, wherein further partitioning of child nodes split from leaf nodes via asymmetric binary partitioning is allowed recursively along the same branch in any order with symmetric partitioning.
    Type: Application
    Filed: May 11, 2021
    Publication date: August 26, 2021
    Inventors: Krit Panusopone, Seungwook Hong, Limin Wang
  • Conditionally parsed extension syntax for HEVC extension processing
    Patent number: 11102514
    Abstract: A system for signaling extension functions used in decoding a sequence including a plurality of pictures, each picture processed at least in part according to a picture parameter set is disclosed. An extension presence signaling flag is read and used to determine whether flags signaling the performance of extension functions are to be read. The flags are only read if indicated by the extension presence signaling flag.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: August 24, 2021
    Assignee: ARRIS Enterprises LLC
    Inventors: Yue Yu, Limin Wang
  • 4D CONVOLUTIONAL NEURAL NETWORKS FOR VIDEO RECOGNITION
    Publication number: 20210248377
    Abstract: This disclosure includes technologies for video recognition in general. The disclosed system can automatically detect various types of actions in a video, including reportable actions that cause shrinkage in a practical application for loss prevention in the retail industry. The temporal evolution of spatio-temporal features in the video are used for action recognition. Such features may be learned via a 4D convolutional operation, which is adapted to model low-level features based on a residual 4D block. Further, appropriate responses may be invoked if a reportable action is recognized.
    Type: Application
    Filed: June 9, 2020
    Publication date: August 12, 2021
    Inventors: Weilin HUANG, Shiwen ZHANG, Sheng GUO, Limin WANG, Matthew Robert SCOTT
  • RETAIL INVENTORY SHRINKAGE REDUCTION VIA ACTION RECOGNITION
    Publication number: 20210248885
    Abstract: This disclosure includes technologies for action recognition in general. The disclosed system may automatically detect various types of actions in a video, including reportable actions that cause shrinkage in a practical application for loss prevention in the retail industry. Further, appropriate responses may be invoked if a reportable action is recognized. In some embodiments, a three-branch architecture may be used in a machine learning model for action and/or activity recognition. The three-branch architecture may include a main branch for action recognition, an auxiliary branch for learning/identifying an actor (e.g., human parsing) related to an action, and an auxiliary branch for learning/identifying a scene related to an action. In this three-branch architecture, the knowledge of the actor and the scene may be integrated in two different levels for action and/or activity recognition.
    Type: Application
    Filed: February 5, 2021
    Publication date: August 12, 2021
    Inventors: Weilin HUANG, Shiwen ZHANG, Limin WANG, Sheng GUO, Matthew Robert SCOTT
  • Reducing Overhead for Multiple-Hypothesis Temporal Prediction
    Publication number: 20210227225
    Abstract: A method is provided for inter-coding video in which transmission bandwidth requirements associated with second motion vectors for bi-directional temporal prediction is reduced. In the method, vector information for one of motion vectors for multi-directional temporal prediction can be transmitted together with information on how to derive or construct the second motion vectors. Thus, rather than sending express information regarding each of the plurality of motion vectors, express information related to only one motion vector along with information related to reconstruction/derivation of the second motion vectors is transmitted, thus reducing bandwidth requirements and increasing coding efficiency.
    Type: Application
    Filed: April 8, 2021
    Publication date: July 22, 2021
    Inventors: Yue Yu, Krit Panusopone, Limin Wang
  • UNEQUAL WEIGHT PLANAR PREDICTION
    Publication number: 20210227242
    Abstract: A method of decoding JVET video includes receiving a bitstream and calculating a final planar prediction in planar mode to predict pixel values for a current coding block. The final planar prediction may rely on using unequal weights applied to each of a horizontal and vertical predictor, where such predictors may be generated by interpolating neighboring pixels for each predicted pixel within a coding block. The computation may be made more accurate by deriving a value for a bottom right neighboring pixel.
    Type: Application
    Filed: April 1, 2021
    Publication date: July 22, 2021
    Inventors: Krit Panusopone, Yue Yu, Seungwook Hong, Limin Wang
  • Simplified Processing of Weighted Prediction Syntax and Semantics Using a Bit Depth Variable for High Precision Data
    Publication number: 20210227215
    Abstract: Particular embodiments may remove a condition check in the semantics for checking a high-precision data flag. This simplifies the semantics used in the encoding and decoding process. In this case, even if the high-precision data flag is not set, the value of the weighted prediction syntax element is set by the BitDepth variable. However, even if the BitDepth is not considered high-precision data, such as 8 bits, the range for the weighted prediction syntax element is still the same as the fixed value. For example, the syntax elements luma_offset_l0[i], luma_offset_l1[i], delta_chroma_offset_l0[i][j], and delta_chroma_offset_l1[i][j] use the variable BitDepth as described above whether the flag extended_precision_processing_flag is enabled and not enabled to indicate whether the bit depth is above a threshold.
    Type: Application
    Filed: April 7, 2021
    Publication date: July 22, 2021
    Inventors: Yue Yu, Limin Wang
  • Memory Reduction Implementation for Weighted Angular Prediction
    Publication number: 20210227233
    Abstract: A method and apparatus for decoding JVET video, including receiving a bitstream and generating predictor pixels for angular prediction using pixels at projected positions along both a top reference row (main reference line) and a left reference column (side reference line). By combining projected pixel values on the main reference line with projected pixel values on the side reference, a predictor pixel at coordinate (x,y) can be determined. Further weighting the values according to a distance between predictor pixels and projected pixel positions on the main and side references may be included in the combination of pixel values. The weight parameter may be determined from a weighting table. Further, the weights for horizontal and vertical predictors may be computed based on that of a horizontal and vertical predictor, whichever is more accurate.
    Type: Application
    Filed: April 5, 2021
    Publication date: July 22, 2021
    Inventors: Krit Panusopone, Seungwook Hong, Yue Yu, Limin Wang
  • Constrained position dependent intra prediction combination (PDPC)
    Patent number: 11070826
    Abstract: A second level intra prediction mode can be combined with one or more of sixty-seven JVET intra prediction modes during encoding of a coding unit in a video bitstream. Embodiments include making a position dependent intra prediction combination (PDPC) mode available as the second level intra prediction mode. In embodiments, when a PDPC (position dependent intra prediction combination) mode is enabled, the second level intra prediction is combined with one of the 67 selected intra predictor modes. In embodiments, the PDPC mode is only enabled or available for a predetermined subset of intra prediction modes (out of 67 possible modes), in order to reduce encoder complexity and potentially improve coding efficiency. The PDPC mode may be identifies as enabled or available by a list of modes or signaling in the video bitstream.
    Type: Grant
    Filed: May 5, 2020
    Date of Patent: July 20, 2021
    Assignee: ARRIS Enterprises LLC
    Inventors: Krit Panusopone, Seungwook Hong, Limin Wang
  • Bit depth variable for high precision data in weighted prediction syntax and semantics
    Patent number: 11070840
    Abstract: Particular embodiments provide a variable, BitDepth, that may be set at a value based on a number of bits used to represent pixels in pictures of a video. The variable may be used in syntax elements in HEVC, such as the HEVC range extension, but other coding standards may be used. By using the variable, different resolutions for the video may be accommodated during the encoding and decoding process. For example, the number of pixels in the pictures may be represented by 8 bits, 10 bits, 12 bits, or another number of bits depending on the resolution. Using the BitDepth variable in the syntax provides flexibility in the motion estimation and motion compensation process. For example, syntax elements used in the weighted prediction process may take into account different numbers of bits used to represent the pictures.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: July 20, 2021
    Assignee: ARRIS Enterprises LLC
    Inventors: Yue Yu, Limin Wang
  • POST-FILTERING FOR WEIGHTED ANGULAR PREDICTION
    Publication number: 20210218963
    Abstract: A method of partitioning a video coding block for JVET, comprising representing a JVET coding tree unit as a root node in a quadtree plus binary tree (QTBT) structure that can have a quadtree branching from the root node and binary trees branching from each of the quadtree's leaf nodes using asymmetric binary partitioning to split a coding unit represented by a quadtree leaf node into two child nodes of unequal size, representing the two child nodes as leaf nodes in a binary tree branching from the quadtree leaf node and coding the child nodes represented by leaf nodes of the binary tree with JVET, wherein weighted angular coding unit prediction is employed and wherein post-coding unit prediction filtering can be avoided or unbiased to increase coding times.
    Type: Application
    Filed: March 26, 2021
    Publication date: July 15, 2021
    Inventors: Krit Panusopone, Yue Yu, Seungwook Hong, Limin Wang