Sharp Kabushiki Kaisha Corporation

Sharp Laboratories of America, Inc

Fg Innovation Company Limited

Dolby International Ab

Huawei Technologies Co., Limited

Tencent Technology (shenzhen) Company Limited

Honeywell International Inc.

Zte Corporation

Shenzhen Chuangwei-rgb Electronic Co., Ltd.

Jie Zhao

Christopher A Segall

Kiran Mukesh Misra

Louis Joseph Kerofsky

Seung-Hwan Kim

Sachin G Deshpande

Weijia Zhu

Frank Bossen

Shawmin Lei

Michael Horowitz

Tomohiro Ikai

Lei Qin

Byeongdoo Choi

Xiao Zhou

Jun Ma

Philip Cowan

Xing Chen

Jiwei Guo

Siwei Zhou

Ningbo Jiang

Qinglei Feng

Zheng Jiang

Yeping Su

Shijun Sun

Feng Liu

Yi Chen

Di Wu

Xin Luo

Meifang He

Mark Clifford Buckley

Jie Wang

Tao Tang

Tianfeng Zhao

Shuhui Hu

Haidong Xu

Guobin Xu

Jixing Liu

Zui Tao

Michael Kadichevitz

Xin Zhong

Shuguang Xiao

Wei-Jia Zhu

Wenhui Wu

Christopher Andrew Segall

Jianbing Fu

Gongyi Xia

Teng Zhang

Ron Rubinstein

Bei Shi

Jianqiang Yuan

A method of encoding video data by a device is provided. Transform coefficient values associated with a chroma coding block are received. The chroma coding block is one of chroma coding blocks resulting from partitioning a chroma coding tree block and misaligned with a luma coding tree block corresponding to the chroma coding tree block and partitioned into luma coding blocks which are organized into quantization groups such that luma quantization parameters are determined for the luma coding tree block. One of the luma quantization parameters that is mapped to the chroma coding block is identified. A predictive quantization parameter is derived by using a value derived from the identified luma quantization parameter. A chroma quantization parameter is determined by adding a delta quantization parameter associated with each of the chroma coding blocks to the predictive quantization parameter. Level values are generated based on the determined chroma quantization parameter.

Systems and methods for varying quantization parameters

A method for decoding a video bitstream is disclosed. The method comprises: entropy decoding a first portion of a video bitstream, wherein first portion of video bitstream is associated with a video frame, thereby producing a first portion of decoded data; entropy decoding a second portion of video bitstream, wherein second portion of video bitstream is associated with video frame, thereby producing a second portion of decoded data, wherein entropy decoding second portion of video bitstream is independent of entropy decoding first portion of video bitstream; and reconstructing a first portion of video frame associated with video bitstream using first portion of decoded data and second portion of decoded data.

Methods, devices and systems for parallel video encoding and decoding

A method of generating a prediction for an area of video data, comprises Receiving a rectangular video block including sample values, and for each sample included in the video block, generating a predictive simple value by averaging a horizontal interpolation and a vertical interpolation corresponding to the location of the sample within the video block.

Image decoding apparatus and image coding apparatus

Systems and methods for performing motion vector prediction for video coding are disclosed. A motion vector predictor is determined based at least in part on motion information associated with a selected motion vector predictor origin and offset values corresponding to a selected sampling point. The sampling point is specified according to a set of direction and distance on a sampling map for the motion vector predictor origin.

Systems and methods for performing motion vector prediction for video coding using motion vector predictor origins

A video coding device may be configured to perform video coding according to one or more of the techniques described herein. In one example, a method of partitioning video data for video coding, comprises receiving a video block including sample values, and partitioning the sample values according to the following set of partitioning modes: quadtree, horizontal or vertical symmetric binary tree, horizontal or vertical asymmetric binary tree, and horizontal or vertical triple tree.

Systems and methods for partitioning video blocks for video coding

A method of deriving intra prediction data based on a planar prediction mode includes the following operations: obtaining multiple first reconstructed row samples and a second reconstructed row sample in an adjacent above row to a current block, the first reconstructed row samples extending from first to last columns of the current block, the second reconstructed row sample corresponding to an adjacent right column to the current block; obtaining multiple first reconstructed column samples and a second reconstructed column sample in an adjacent left column to the current block, the first reconstructed column samples extending from first to last rows of the current block, the second reconstructed column sample corresponding to an adjacent below row to the current block; and deriving the intra prediction data corresponding to the current block based on a width and a height of the current block and the obtained reconstructed row and column samples.

Systems and methods for deriving intra prediction data based on planar prediction mode

An electronic device of decoding a current video block in a video picture is provided. The electronic device determines whether a partitioning scheme of the current video block is a single tree partitioning or a dual tree partitioning. The electronic device selects, based on the partitioning scheme, one derivation from candidate derivations to compute a first predictive quantization parameter (QP) for the current video block. A first derivation comprises computing the first predictive QP based at least in part on another QP and an additional value when the partitioning scheme is the single tree partitioning. A second derivation comprises computing the first predictive QP by using a previously-derived QP when the partitioning scheme is the dual tree partitioning. The electronic device computes a second QP based at least in part on the first predictive QP and an offset value, and use the second QP to decode the current video block.

Systems and methods for deriving quantization parameters for video blocks in video coding

This application provides an antenna system and a wireless device, and pertains to the field of communications technologies. In this application, a decoupling resonator is connected to a first antenna, and a resonance frequency of the decoupling resonator is within an operating frequency band of a second antenna, so that the decoupling resonator can resonate within the operating frequency band of the second antenna. The decoupling resonator reduces coupling between the first antenna and the second antenna, and isolation between the first antenna and the second antenna is improved.

Antenna system and wireless device

Some embodiments provide a method of decoding a current video block in a video picture. From several partitioning schemes, the method identifies a partitioning scheme that is used to partition the current video block. Based on the identified partitioning scheme, the method selects one derivation to compute a first quantization parameter for the current video block from several candidate derivations for computing the first quantization parameter. The method computes a second quantization parameter for the current video block based at least in part on the computed first quantization parameter. The method then uses the computed second quantization parameter to decode the current video block.

A method of encoding and decoding video data is described. According to an aspect of an invention, luma and chroma components may have separate quadtree plus binary tree (QTBT) structures and a scaling parameter for a chroma coding block is determined based on one or more properties of a luma component.

Systems and methods for coding video data using adaptive component scaling

A method of decoding video data by a device is provided. Level values corresponding to a chroma coding block are received. The chroma coding block is one of chroma coding blocks resulting from partitioning a chroma coding tree block. A luma coding tree block corresponding to the chroma coding tree block is partitioned into luma coding blocks which are organized into quantization groups such that luma quantization parameters are determined for the luma coding tree block. One of the luma quantization parameters that is mapped to the chroma coding block is identified. A predictive quantization parameter is derived by using a value derived from the identified luma quantization parameter. A chroma quantization parameter is determined by adding a delta quantization parameter associated with each of the chroma coding blocks to the predictive quantization parameter. Transform coefficient values are generated based on the determined chroma quantization parameter.

The application provides an antenna and a communications device, and pertains to the field of antenna technologies. The antenna includes a horizontally polarized antenna and a vertically polarized antenna that are disposed in a superposition manner. The horizontally polarized antenna includes a metal sheet, and the metal sheet can be separately connected to a double-sided parallel strip line in the horizontally polarized antenna and a first conductor of a coaxial cable. A diameter of a maximum inscribed circle of the metal sheet is greater than a line width of the double-sided parallel strip line, and both the metal sheet and the coaxial cable are located on a first side of a substrate. Therefore, the metal sheet can effectively suppress an induced current in the coaxial cable, and impact of the induced current on the vertically polarized antenna can be reduced.

Antenna and communications device

A method of generating a prediction for an area of video data, comprises Receiving a rectangular video block including sample values, and for each sample included in the video block, generating a predictive sample value by averaging a horizontal interpolation and a vertical interpolation corresponding to the location of the sample within the video block.

Growing community of inventors

Camas, WA, United States of America

Jie Zhao