Patents by Inventor Mei Guo

Mei Guo 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: 20220248862
    Abstract: A ready to assemble (RTA) bed structural system is disclosed wherein the structural system is adapted to be shipped in easy-to-assemble pieces which render the bed easier to form into a package in view of the fact that the longitudinal frame members of the bed frame can be folded in half such that the resulting package has half the longitudinal length of the ultimately assembled bed. In addition, several of the deck components of the bed can be folded together so as to effectively define an interior compartment within which other components of the bed can be housed. This effectively provides the package with a more compact footprint rendering the same easier and less costly to transport.
    Type: Application
    Filed: February 11, 2021
    Publication date: August 11, 2022
    Inventors: CHIH HSIUNG LIU, MEI JUN XU, HAI GUO JIANG, KU ZHAO
  • Patent number: 11388419
    Abstract: Improved video coding techniques include deriving prediction pixel blocks for use in intra-coding video and combined inter- and intra-coding video. In a first aspect, the techniques may include deriving value(s) for pixel location(s) of the prediction pixel block by, when a prediction direction vector assigned to the prediction vector points to quadrants I or III of a Cartesian plane, deriving the pixel location's value from pixel values in two regions of previously-decoded pixel data intercepted by extending the prediction direction vector in two opposite directions through the pixel location. When the prediction direction vector points toward quadrants II of the Cartesian plane, deriving the pixel location's value from pixel values in one region intercepted by the prediction direction vector through the pixel location, and from a second region intercepted by a vector that is orthogonal to the prediction direction vector.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: July 12, 2022
    Assignee: Apple inc.
    Inventors: Mei Guo, Jun Xin, Hsi-Jung Wu, Alexandros Tourapis, Krishnakanth Rapaka
  • Patent number: 11323730
    Abstract: Techniques for video exchange are disclosed in which a video source sends redundant copies of video coded at a given presentation time. A decoder may determine, from metadata stored with a first decoded frame, whether other decoded frames have been designated as correlated to the first decoded frame. If so, the decoder may fetch other decoding frames using time indicator values of other decoded frames in metadata stored with the first decoded frame. When other decoded frame(s) are found, the decoder may blend content of the first coded frame and the other decoded frame(s). The decoder may render the blended frame. When one such coded frame is an intra-coded frame, the proposed technique may alleviate beating artifacts by blending recovered data of the intra-coded frame with recovered data of another frame, which may be inter-coded.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: May 3, 2022
    Assignee: Apple Inc.
    Inventors: Mei Guo, Jun Xin, Yeping Su, Hsi-Jung Wu, Alexandros Tourapis
  • Publication number: 20210243451
    Abstract: Techniques are disclosed for deriving prediction pixel blocks for use in intra-coding video and combined inter- and intra-coding video. In a first aspect, the techniques may include deriving value(s) for pixel location(s) of the prediction pixel block by, when a prediction direction vector assigned to the prediction vector points to quadrants I or III of a Cartesian plane, deriving the pixel location's value from pixel values in two regions of previously-decoded pixel data intercepted by extending the prediction direction vector in two opposite directions through the pixel location. When the prediction direction vector points toward quadrants II of the Cartesian plane, deriving the pixel location's value from pixel values in one region intercepted by the prediction direction vector through the pixel location, and from a second region intercepted by a vector that is orthogonal to the prediction direction vector.
    Type: Application
    Filed: March 30, 2020
    Publication date: August 5, 2021
    Inventors: Mei Guo, Jun Xin, Hsi-Jung Wu, Alexandros Tourapis, Krishnakanth Rapaka
  • Publication number: 20210076054
    Abstract: Techniques for video exchange are disclosed in which a video source sends redundant copies of video coded at a given presentation time. A decoder may determine, from metadata stored with a first decoded frame, whether other decoded frames have been designated as correlated to the first decoded frame. If so, the decoder may fetch other decoding frames using time indicator values of other decoded frames in metadata stored with the first decoded frame. When other decoded frame(s) are found, the decoder may blend content of the first coded frame and the other decoded frame(s). The decoder may render the blended frame. When one such coded frame is an intra-coded frame, the proposed technique may alleviate beating artifacts by blending recovered data of the intra-coded frame with recovered data of another frame, which may be inter-coded.
    Type: Application
    Filed: September 5, 2019
    Publication date: March 11, 2021
    Inventors: Mei GUO, Jun XIN, Yeping SU, Hsi-Jung WU, Alexandros TOURAPIS
  • Patent number: 10873763
    Abstract: Techniques are disclosed for coding high dynamic range (HDR) data. According to such techniques, HDR data may be converted to a domain of uniform luminance data. The uniform domain data may be coded by motion compensated predictive coding. The HDR data also may be coded by motion compensated predictive coding, using a coding parameter that is derived from a counterpart coding parameter of the coding of the uniform domain data. In another technique, HDR data may be coded using coding parameters that are derived from HDR domain processing but distortion measurements may be performed in a uniform domain.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: December 22, 2020
    Assignee: APPLE INC.
    Inventors: Mei Guo, Jun Xin, Yeping Su, Chris Chung, Dazhong Zhang, Xiaosong Zhou, Hsi-Jung Wu
  • Patent number: 10757428
    Abstract: Systems and methods are disclosed for reshaping HDR video content to improve compression efficiency while using standard encoding/decoding techniques. Input HDR video frames, e.g., represented in an IPT color space, may be reshaped before the encoding/decoding process and the corresponding reconstructed HDR video frames may then be reverse reshaped. The disclosed reshaping methods may be combinations of scene-based or segment-based methods.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: August 25, 2020
    Assignee: APPLE INC.
    Inventors: Mei Guo, Jun Xin, Jun Xu, Yeping Su, Chris Chung, Xiaosong Zhou, Hsi-Jung Wu
  • Patent number: 10701355
    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: April 9, 2019
    Date of Patent: June 30, 2020
    Assignee: HFI INNOVATION INC.
    Inventors: Mei Guo, Xin Zhao, Xun Guo, Shaw-Min Lei
  • Patent number: 10638156
    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: January 9, 2019
    Date of Patent: April 28, 2020
    Assignee: HFI Innovation Inc.
    Inventors: Mei Guo, Shan Liu, Shaw-Min Lei
  • Publication number: 20200120345
    Abstract: Systems and methods are disclosed for reshaping HDR video content to improve compression efficiency while using standard encoding/decoding techniques. Input HDR video frames, e.g., represented in an IPT color space, may be reshaped before the encoding/decoding process and the corresponding reconstructed HDR video frames may then be reverse reshaped. The disclosed reshaping methods may be combinations of scene-based or segment-based methods.
    Type: Application
    Filed: October 10, 2018
    Publication date: April 16, 2020
    Inventors: Mei GUO, Jun XIN, Jun XU, Yeping SU, Chris CHUNG, Xiaosong ZHOU, Hsi-Jung WU
  • Patent number: 10623744
    Abstract: The present disclosure describes techniques for coding video data in a manner that provides consistency to portions of the video that have similar content. According to such techniques, a video sequence may be parsed into partitions and content of the partitions may be analyzed. Partitions may be grouped together based on detected similarities in content. Coding parameters may be selected for each partition based on the partition's membership in the groups. Thus, when the video sequence is coded, coding parameters for frames of two commonly-grouped partitions may be similar, which causes coded video data to have similar presentation.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: April 14, 2020
    Assignee: APPLE INC.
    Inventors: Mei Guo, Jun Xin, Yeping Su, Chris Y. Chung, Xiaosong Zhou, Hsi-Jung Wu
  • Patent number: 10574997
    Abstract: Systems and methods are disclosed for coding pixel blocks of an input frame in which coding costs of a plurality of candidate coding modes are estimated. A coding cost of a candidate coding mode may be estimated based on noise estimate associated with the candidate coding mode. A coding mode for the input pixel block may be selected based on a comparison of the estimated coding costs of the plurality of candidate coding modes. The input pixel block may then be coded according to the selected coding mode.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: February 25, 2020
    Assignee: APPLE INC.
    Inventors: Chris Y. Chung, Mei Guo, Hsi-Jung Wu, Jingteng Xue, Jun Xin
  • 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
  • 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: 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: 20190132594
    Abstract: Techniques are disclosed for coding pixel blocks of an input frame in which coding costs of a plurality of candidate coding modes are estimated, in which estimates of distortion include an estimate of noise of each respective candidate coding mode. Thus, evaluation of each coding mode may involve searching for a prediction reference for a pixel block according to the mode, and estimating coding cost of the respective candidate coding mode based at least in part on an estimate of noise associated with the respective coding mode. A coding mode for the input pixel block may be selected based on a comparison of the coding costs of the candidate coding modes, and the input pixel block may be coded according to the selected coding mode. By estimating noise associated with the candidate coding modes and, in particular, employing techniques to maintain consistent levels of noise across different frames of a coded video sequence, it is expected that perceived quality of coding will be improved.
    Type: Application
    Filed: October 27, 2017
    Publication date: May 2, 2019
    Inventors: Chris Y. Chung, Mei Guo, Hsi-Jung Wu, Jingteng Xue, Jun Xin
  • Publication number: 20190104315
    Abstract: The present disclosure describes techniques for coding video data in a manner that provides consistency to portions of the video that have similar content. According to such techniques, a video sequence may be parsed into partitions and content of the partitions may be analyzed. Partitions may be grouped together based on detected similarities in content. Coding parameters may be selected for each partition based on the partition's membership in the groups. Thus, when the video sequence is coded, coding parameters for frames of two commonly-grouped partitions may be similar, which causes coded video data to have similar presentation.
    Type: Application
    Filed: October 4, 2017
    Publication date: April 4, 2019
    Inventors: Mei Guo, Jun Xin, Yeping Su, Chris Y. Chung, Xiaosong Zhou, Hsi-Jung Wu
  • 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