Patents by Inventor Min Lei

Min Lei 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: 20200092141
    Abstract: Aspects of the disclosure provide a method for radio resource management (RRM) measurement and channel estimation. The method can include receiving first reference signals of a first system in a wireless communication network at a user equipment (UE), receiving second reference signals of a second system in the wireless communication network at the UE, receiving a quasi-co-location (QCL) configuration from one of the first system and the second system, the QCL configuration indicating the first reference signals and the second reference signals are quasi-co-located (QCLed) or co-located, and performing an RRM measurement and/or a channel estimation based on a combination of the QCLed first reference signals and second reference signals.
    Type: Application
    Filed: October 17, 2018
    Publication date: March 19, 2020
    Applicant: MEDIATEK (Beijing) INC.
    Inventors: Tao CHEN, Zhixun TANG, Min LEI
  • Patent number: 10567751
    Abstract: In one embodiment, a method receives a video bitstream corresponding to compressed video, wherein Filter Unit (FU) based in-loop filtering is allowed in a reconstruction loop associated with the compressed video. The method then derives reconstructed video from the video bitstream, wherein the reconstructed video is partitioned into FUs and derives a merge flag from the video bitstream for each of the FUs, wherein the merge flag indicates whether said each of the FUs is merged with a neighboring FU. The method further receives a merge index from the video bitstream if the merge flag indicates that said each of the FUs is merged, and receives the filter parameters from the video bitstream if the merge flag indicates that said each of the FUs is not merged. Finally, the method applies the in-loop filtering to said each of the FUs using the filter parameters.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: February 18, 2020
    Assignee: HFI INNOVATION INC.
    Inventors: Ching-Yeh Chen, Chih-Ming Fu, Chia-Yang Tsai, Yu-Wen Huang, Shaw-Min Lei
  • Publication number: 20200007875
    Abstract: A method of video coding using palette coding mode for color video in a non-444 color format is disclosed. The non-444 video data can be converted to the 444 format so that the palette designed for the 444 format can be used for the non-444 video data. For the 4:2:0 color format, each chroma sample collocated with corresponding quad luma samples is padded with three chroma samples to form converted quad chroma samples. For the 4:2:0 color format, if a current pixel does not belong to the color palette, one or more escape values are signaled for the current pixel and the escape value associated with the chroma sample of the current pixel for each color component is not signaled for three of the quad chroma sample locations collocated with corresponding quad luma samples.
    Type: Application
    Filed: September 11, 2019
    Publication date: January 2, 2020
    Inventors: Shan LIU, Jing YE, Xiaozhong XU, Jungsun KIM, Wang-Lin LAI, Shaw-Min LEI
  • Patent number: 10511843
    Abstract: A method and apparatus for loop filter processing of video data in a video encoder or decoder are disclosed. Embodiments according to the present invention conditionally allow sharing of loop filter parameters. In one embodiment, sharing of loop filter information between the current block and a neighboring block is determined according to a condition. If the condition indicates that sharing of loop filter information is allowed, a merge flag is coded and incorporated in the video bitstream in an encoder, and a merge flag is parsed from the video bitstream and decoded in a decoder. In one embodiment, the condition depends on region partitioning of the picture, where region partitioning partitions the picture into regions and the region may correspond to a slice or a tile. The condition is set to indicate that sharing of loop filter information is allowed if the block and the neighboring block are in a same slice/tile.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: December 17, 2019
    Assignee: HFI Innovation Inc.
    Inventors: Chih-Ming Fu, Chia-Yang Tsai, Chih-Wei Hsu, Ching-Yeh Chen, Yu-Wen Huang, Shaw-Min Lei
  • Patent number: 10484680
    Abstract: The present disclosure describes a method of decoding a block, and the method includes receiving a flag indicating whether a current intra prediction mode is equal to any of one or more most probable modes, deriving, based on a value of the flag, the current intra prediction mode from a decoded mode index, and decoding the block according to the current intra prediction mode. The current intra prediction mode belongs to a mode set that includes a DC mode, a Planar mode, and at least one directional mode. The deriving the current intra prediction mode includes, when the mode index corresponds to a first mode index value representing the Planar mode, deriving the current intra prediction mode to be the Planar mode; and, when the mode index corresponds to a second mode index value representing the DC mode, deriving the current intra prediction mode to be the DC mode.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: November 19, 2019
    Assignee: HFI INNOVATION INC.
    Inventors: Mei Guo, Xun Guo, Shaw-Min Lei
  • Patent number: 10477234
    Abstract: A method and apparatus derive a motion vector predictor (MVP) candidate set for a block. Embodiments according to the present invention determine a plurality of spatial neighboring blocks of the block, obtain one or more spatial MVP candidates from motion vectors associated with the spatial neighboring blocks, determine whether one or more redundant MVP candidates exist in the spatial MVP candidates, generate a first MVP candidate set, wherein said generating the first MVP candidate set comprises not including the determined one or more redundant MVP candidates into the first MVP candidate set, and generate a final MVP candidate set according to the first MVP candidate set.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: November 12, 2019
    Assignee: HFI INNOVATION INC.
    Inventors: Tzu-Der Chuang, Jian-Liang Lin, Yu-Wen Huang, Shaw-Min Lei
  • Patent number: 10462475
    Abstract: A method of video coding using palette coding mode for color video in a non-444 color format is disclosed. The non-444 video data can be converted to the 444 format so that the palette designed for the 444 format can be used for the non-444 video data. For the 4:2:0 color format, each chroma sample collocated with corresponding quad luma samples is padded with three chroma samples to form converted quad chroma samples. For the 4:2:0 color format, if a current pixel does not belong to the color palette, one or more escape values are signaled for the current pixel and the escape value associated with the chroma sample of the current pixel for each color component is not signaled for three of the quad chroma sample locations collocated with corresponding quad luma samples.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: October 29, 2019
    Assignee: HFI INNOVATION INC.
    Inventors: Shan Liu, Jing Ye, Xiaozhong Xu, Jungsun Kim, Wang-Lin Lai, Shaw-Min Lei
  • Publication number: 20190281292
    Abstract: A method for intra prediction mode decoding for a current block based on multi-level most probable mode (MPM) sets. The method includes determining one or more MPM candidates for a first-level MPM set, and determining one or more most probable remaining mode (MPRM) candidates for a second-level MPM set. Wherein the one or more MPRM candidates are identified based on a mode of a neighboring block of the current block, and the one or more MPRM candidates are different from any MPM candidate in the first-level MPM set. The method also includes decoding syntax information related to a current intra prediction mode corresponding to the current block according to the multi-level MPM sets using a decoder, and decoding the current block based on the determined current intra prediction mode.
    Type: Application
    Filed: May 28, 2019
    Publication date: September 12, 2019
    Applicant: HFI INNOVATION INC.
    Inventors: Tzu-Der CHUANG, Ching-Yeh CHEN, Yu-Wen HUANG, Shan LIU, Zhi ZHOU, Shaw-Min LEI
  • Patent number: 10405004
    Abstract: A method and apparatus for processing reconstructed video using in-loop filter in a video coding system are disclosed. The method uses chroma in-loop filter indication to indicate whether chroma components are processed by in-loop filter when the luma in-loop filter indication indicates that in-loop filter processing is applied to the luma component. An additional flag may be used to indicate whether the in-loop filter processing is applied to an entire picture using same in-loop filter information or each block of the picture using individual in-loop filter information. Various embodiments according to the present invention to increase efficiency are disclosed, wherein various aspects of in-loop filter information are taken into consideration for efficient coding such as the property of quadtree-based partition, boundary conditions of a block, in-loop filter information sharing between luma and chroma components, indexing to a set of in-loop filter information, and prediction of in-loop filter information.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: September 3, 2019
    Assignee: HFI INNOVATION INC.
    Inventors: Chih-Ming Fu, Ching-Yeh Chen, Chia-Yang Tsai, Yu-Wen Huang, Shaw-Min Lei
  • Patent number: 10392144
    Abstract: A hydraulic steel strapping machine for strapping a steel strip around a package, including a clamping and cutting section and a tensioning section. An objective of the present invention is to minimize the weight and the volume of the steel strapping machine. The clamping and cutting section comprises a clamping cylinder, disposed on a top position of a front end of the hydraulic steel strapping machine along a Z direction and supported by a support frame, for driving a linkage mechanism. A cylinder pin is disposed in the linkage mechanism along a X direction and is sleeved by a lifting lug fixed onto a bottom surface of a piston of the clamping cylinder. A pressing part is sleeved around the cylinder pin, a cutter, a return spring and a transverse cutter are disposed below the pressing part. The linkage mechanism comprises two groups of connecting rods.
    Type: Grant
    Filed: November 27, 2016
    Date of Patent: August 27, 2019
    Assignee: MEISHAN CRRC FASTENING SYSTEM CO., LTD.
    Inventors: Xiangyun Zhao, Kai Fu, Yu Liu, Wei Li, Min Lei, Huan Li
  • Publication number: 20190238836
    Abstract: A method and apparatus for intra prediction for a current block using directional intra prediction based on neighboring pixels around the current block are disclosed. Embodiment according to the present invention derives the gradient for the current pixel from the neighboring reconstructed pixels along a prediction direction of directional intra prediction. The gradient derived is used to form the final intra prediction. In another embodiment of the present invention, the intra prediction for slant vertical and horizontal directions is derived based on the neighboring reconstructed pixels in a neighboring row adjacent to the top side of the current block and the neighboring reconstructed pixels in a neighboring column adjacent to the left side of the current block.
    Type: Application
    Filed: April 9, 2019
    Publication date: August 1, 2019
    Inventors: Mei GUO, Xin ZHAO, Xun GUO, Shaw-Min LEI
  • Patent number: 10368095
    Abstract: According to at least one aspect, a method for predictive Intra coding is provided. The method comprises: determining a set of Intra prediction modes used for prediction unit (PU) blocks with a plurality of different block sizes comprising a 4×4 block size and at least two other block sizes; applying predictive Intra coding to a first PU block having a first block size that matches a block size in the plurality of different block sizes based on one or more neighboring PU blocks according to a first Intra prediction mode selected from the set of Intra prediction modes; and applying predictive Intra coding to a second PU block having a second block size that is different from the first block size and matches a block size in the plurality of different block sizes according to a second Intra prediction mode selected from the set of Intra prediction modes.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: July 30, 2019
    Assignee: HFI Innovation Inc.
    Inventors: Mei Guo, Shan Liu, Shaw-Min Lei
  • Patent number: 10327010
    Abstract: An encoder for receiving a video frame and performing encoding processes to generate an encoded bitstream includes: a fidelity enhancement block, for performing a fidelity enhancement technique on processed data utilizing a partition method, and generating fidelity enhancement information comprising at least one parameter associated with a partition structure, wherein the fidelity enhancement technique comprises applying discrepancy modeling based on DC offset; and an entropy coding block, coupled to the fidelity enhancement block, for encoding the fidelity enhancement information, and embedding the encoded fidelity enhancement information into the encoded bitstream.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: June 18, 2019
    Assignee: HFI Innovation Inc.
    Inventors: Shaw-Min Lei, Yu-Wen Huang, Xun Guo
  • Patent number: 10306222
    Abstract: A method and apparatus for intra prediction for a current block using directional intra prediction based on neighboring pixels around the current block are disclosed. Embodiment according to the present invention derives the gradient for the current pixel from the neighboring reconstructed pixels along a prediction direction of directional intra prediction. The gradient derived is used to form the final intra prediction. In another embodiment of the present invention, the intra prediction for slant vertical and horizontal directions is derived based on the neighboring reconstructed pixels in a neighboring row adjacent to the top side of the current block and the neighboring reconstructed pixels in a neighboring column adjacent to the left side of the current block.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: May 28, 2019
    Assignee: HFI INNOVATION INC.
    Inventors: Mei Guo, Xin Zhao, Xun Guo, Shaw-Min Lei
  • Publication number: 20190149842
    Abstract: According to at least one aspect, a method for predictive Intra coding is provided. The method comprises: determining a set of Intra prediction modes used for prediction unit (PU) blocks with a plurality of different block sizes comprising a 4×4 block size and at least two other block sizes; applying predictive Intra coding to a first PU block having a first block size that matches a block size in the plurality of different block sizes based on one or more neighboring PU blocks according to a first Intra prediction mode selected from the set of Intra prediction modes; and applying predictive Intra coding to a second PU block having a second block size that is different from the first block size and matches a block size in the plurality of different block sizes according to a second Intra prediction mode selected from the set of Intra prediction modes.
    Type: Application
    Filed: January 9, 2019
    Publication date: May 16, 2019
    Applicant: HFI Innovation Inc.
    Inventors: Mei Guo, Shan Liu, Shaw-Min Lei
  • Publication number: 20190149846
    Abstract: A method and apparatus for processing reconstructed video using in-loop filter in a video coding system are disclosed. The method uses chroma in-loop filter indication to indicate whether chroma components are processed by in-loop filter when the luma in-loop filter indication indicates that in-loop filter processing is applied to the luma component. An additional flag may be used to indicate whether the in-loop filter processing is applied to an entire picture using same in-loop filter information or each block of the picture using individual in-loop filter information. Various embodiments according to the present invention to increase efficiency are disclosed, wherein various aspects of in-loop filter information are taken into consideration for efficient coding such as the property of quadtree-based partition, boundary conditions of a block, in-loop filter information sharing between luma and chroma components, indexing to a set of in-loop filter information, and prediction of in-loop filter information.
    Type: Application
    Filed: January 16, 2019
    Publication date: May 16, 2019
    Inventors: Chih-Ming FU, Ching-Yeh CHEN, Chia-Yang TSAI, Yu-Wen HUANG, Shaw-Min LEI
  • Publication number: 20190075315
    Abstract: A method and apparatus for deriving a motion vector predictor (MVP) candidate set for a block are disclosed. Embodiments according to the present invention determine a plurality of spatial neighboring blocks of the block, obtain one or more spatial MVP candidates from motion vectors associated with the spatial neighboring blocks, determine whether one or more redundant MVP candidates exist in the spatial MVP candidates, generate a first MVP candidate set, wherein said generating the first MVP candidate set comprises not including the determined one or more redundant MVP candidates into the first MVP candidate set, and generate a final MVP candidate set according to the first MVP candidate set.
    Type: Application
    Filed: November 5, 2018
    Publication date: March 7, 2019
    Inventors: Tzu-Der CHUANG, Jian-Liang LIN, Yu-Wen HUANG, Shaw-Min LEI
  • Patent number: 10212454
    Abstract: According to at least one aspect, a method for predictive Intra coding is provided. The method comprises: determining a set of Intra prediction modes used for prediction unit (PU) blocks with a plurality of different block sizes comprising a 4×4 block size and at least two other block sizes; applying predictive Intra coding to a first PU block having a first block size that matches a block size in the plurality of different block sizes based on one or more neighboring PU blocks according to a first Intra prediction mode selected from the set of Intra prediction modes; and applying predictive Intra coding to a second PU block having a second block size that is different from the first block size and matches a block size in the plurality of different block sizes according to a second Intra prediction mode selected from the set of Intra prediction modes.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: February 19, 2019
    Assignee: HFI Innovation Inc.
    Inventors: Mei Guo, Shan Liu, Shaw-Min Lei
  • Patent number: 10187661
    Abstract: In a method and apparatus for context-adaptive binary arithmetic coding (CABAC) of a syntax element, the bin string corresponding to the syntax element is processed by context-adaptive arithmetic coding with a reduced number of contexts using the bin-level bypass mode, bin-level context sharing, or both. The syntax element belongs to a group comprising merge_idx, ref_idx_1c/ref_idx_10/ref_idx_11, pred_type, and cu_qp_delta. In one embodiment, the syntax element corresponds to merge_idx and three bins of the bin string with bin indices corresponding to 1, 2 and 3 are coded in the bin by-pass mode. In another embodiment, the syntax element corresponds to ref_idx_1c/ref_idx_10/ref_idx_11 and one or more bins of the bin string with bin indices larger than 1 for larger than 2 are coded in the bin bypass mode.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: January 22, 2019
    Assignee: HFI INNOVATION INC.
    Inventors: Mei Guo, Shan Liu, Shaw-Min Lei
  • Patent number: 10178409
    Abstract: A method and apparatus of predictive Intra coding of a block are disclosed. In one embodiment according to the present invention, a set of Intra prediction modes is determined, and predictive Intra coding is applied to a prediction unit (PU) of an image based on one or more neighboring PUs according to a current Intra prediction mode. The current Intra prediction mode is selected from the set of Intra prediction modes and the current Intra prediction mode is predicted using most probable modes (MPMs) and remaining modes. A number of the remaining modes is kept as a power of 2. For example, the 32 remaining modes can be represented using 5-bit fixed length codes.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: January 8, 2019
    Assignee: HFI Innovation Inc.
    Inventors: Mei Guo, Shan Liu, Shaw-Min Lei