公开(公告)号：US10820025B2

公开(公告)日：2020-10-27

申请号：US16072913

申请日：2017-02-03

Applicant: MEDIATEK INC.

Inventor： Wang-Lin Lai ,  Shan Liu ,  Lulin Chen

IPC: H04N21/2387 ,  H04N21/845 ,  H04L29/08 ,  H04N21/25 ,  H04L29/06 ,  H04N21/6587 ,  H04N21/647 ,  H04L12/805 ,  H04N21/858

Abstract: A method and system of message exchange for controlling flow associated with multimedia streaming services from a server to a client using DASH are disclosed. In one method, one or more Push Directives are sent from a client to a server to indicate information related to media data requested. At least one selected Push Directive uses one URLTemplate that comprises a list of media parameter values, and where each media parameter value corresponds to one media parameter associated with one media segment requested. The server then pushes one or more groups of data for the media data requested to the client according to the list of media parameter values. In another method, at least one selected Push Directive uses one URLTemplate that includes a first number to represent a number of repeating difference of media parameter values associated with requested media segments.

公开(公告)号：US10812794B2

公开(公告)日：2020-10-20

申请号：US16558759

申请日：2019-09-03

Applicant: MEDIATEK INC.

Inventor： Shan Liu ,  Xiaozhong Xu ,  Jing Ye

IPC: H04N19/107 ,  H04N19/11 ,  H04N19/463 ,  H04N19/157 ,  H04N19/159 ,  H04N19/46 ,  H04N19/172 ,  H04N19/176

Abstract: A method processes video data by intra prediction in a video coding system. In one implementation, the method receives input data associated with a current block in a current picture, wherein the current block is a non-square block and is coded or to be coded by intra prediction. The method then determines a first set of angular intra prediction modes for the longer side of the current block, wherein a number of the first set of the angular intra prediction modes is greater than a number of a second set of angular intra prediction modes for the shorter side of the current block. The method then determines a current intra prediction mode to derive an intra predictor for the current block, and encodes or decoding the current block according to the current intra prediction mode.

公开(公告)号：US10462468B2

公开(公告)日：2019-10-29

申请号：US15757104

申请日：2016-09-06

Applicant: MEDIATEK INC.

Inventor： Xiaozhong Xu ,  Shan Liu

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/70 ,  H04N19/172 ,  H04N19/134 ,  H04N19/152 ,  H04N19/82 ,  H04N19/58 ,  H04N19/423 ,  H04N19/174

Abstract: A method for a video encoder or decoder using an Intra Block Copy (IntraBC) mode is disclosed. If IntraBC mode is enabled and no loop filter is used for a current picture, a currently decoded reference picture for the current picture is marked as a long-term reference picture before and during decoding of the current picture. The currently decoded reference picture is assigned in reference picture list construction for IntraBC reference of the current picture and buffer fullness for the DPB is calculated before starting decoding the current picture by taking into account of only one reference picture buffer. According to another method, if the maximum DPB size is 1, a variable or a syntax element is set to a target value to impose restriction to use only one picture storage buffer in the DPB to store reference picture for encoding or decoding of a current picture.

公开(公告)号：US10448011B2

公开(公告)日：2019-10-15

申请号：US15460558

申请日：2017-03-16

Applicant: MEDIATEK INC.

Inventor： Shan Liu ,  Xiaozhong Xu ,  Jing Ye

IPC: H04N19/107 ,  H04N19/159 ,  H04N19/46 ,  H04N19/11 ,  H04N19/463 ,  H04N19/157 ,  H04N19/172 ,  H04N19/176

Abstract: An intra prediction method comprises receiving input data of a current block in a current picture, determines a current mode set including multiple intra prediction modes for the current block, derives a number of MPMs from the number of intra prediction modes in the current mode set, and determines the MPMs for the current block. The number of MPMs varies with the number of intra prediction modes in the current mode set. The method encodes or decodes the current block according to a current intra prediction mode selected from the current mode set. To process a non-square block, a current mode set is selected from multiple mode sets according to one or both of a longer side and a shorter side of the non-square block. A current intra prediction mode is selected from the current mode set and the non-square block is coded according to the current intra prediction mode.

公开(公告)号：US10440375B2

公开(公告)日：2019-10-08

申请号：US15919008

申请日：2018-03-12

Applicant: MediaTek Inc.

Inventor： Tzu-Der Chuang ,  Zhenzhong Chen ,  Shan Liu ,  Ching-Yeh Chen ,  Chih-Wei Hsu

IPC: H04N19/30 ,  H04N19/52 ,  H04N19/12 ,  H04N19/187 ,  H04N19/50 ,  H04N19/61 ,  H04N19/105 ,  H04N19/176 ,  H04N19/134

Abstract: Methods of adaptive transform type based on transform unit (TU) size for enhancement layer (EL) coding and multiple motion candidates for EL coding based on corresponding base layer (BL) video data are provided. One method selects a transform type from multiple allowable transform types based on the TU size and applies the selected transform type to the transform units of the inter-layer prediction processed data. Another method derives multiple motion candidates for the EL video data coded in Merge mode or Inter mode based on motion information associated with the corresponding BL video data.

公开(公告)号：US10360721B2

公开(公告)日：2019-07-23

申请号：US15600256

申请日：2017-05-19

Applicant: MEDIATEK INC.

Inventor： Wang Lin Lai ,  Shan Liu

IPC: H04W4/00 ,  G06T15/20 ,  G06T17/05 ,  H04N13/296 ,  H04N13/232 ,  H04N13/221 ,  H04N13/122 ,  H04N13/194 ,  H04N13/117 ,  H04N13/239 ,  H04N13/243 ,  H04N13/344 ,  H04N13/383

Abstract: Aspects of the disclosure provide an apparatus that includes an interface circuit, an image generating circuit and a display device. The interface circuit is configured to receive media data with timed directorial information indicative of a region of interests at a time. The image generating circuit is configured to extract the timed directorial information, and generate one or more images of the region of interests based on the media data and the timed directorial information. The display device is configured to display the one or more images at the time.

公开(公告)号：US10230961B2

公开(公告)日：2019-03-12

申请号：US15611841

申请日：2017-06-02

Applicant: MEDIATEK INC.

Inventor： Shan Liu ,  Jing Ye ,  Xiaozhong Xu ,  Tzu-Der Chuang ,  Ching-Yeh Chen

IPC: H04N19/159 ,  H04N19/122 ,  H04N19/70 ,  H04N19/96 ,  H04N19/105 ,  H04N19/119 ,  H04N19/11 ,  H04N19/176 ,  H04N19/182

Abstract: A method and apparatus for video coding using template-based Intra prediction are disclosed. According to one method, where determining whether to apply the template-based Intra prediction or one or more parameters associated with the template-based Intra prediction depends on the current block size. According to yet another method, the quad-tree plus binary tree (QTBT) structure is used to partition an image or one or more areas of the current image into blocks. If the template-based Intra prediction is used for a current block and the current block is non-square, the width and height of the L-shaped reference pixel line are determined according to width and height of the current block. The L-shaped reference pixel line comprises a top reference pixel segment above the top template and a left reference pixel segment adjacent to a left side of the left template.

公开(公告)号：US10182242B2

公开(公告)日：2019-01-15

申请号：US15101139

申请日：2014-12-26

Applicant: MediaTek Inc.

Inventor： Yu-Chen Sun ,  Jungsun Kim ,  Tzu-Der Chuang ,  Yi-Wen Chen ,  Wang Lin Lai ,  Shan Liu ,  Yu-Wen Huang

IPC: H04N19/593 ,  H04N19/186 ,  H04N19/124 ,  H04N19/176 ,  H04N19/182

Abstract: A method and apparatus for color index coding of a block of video data using index prediction based on reconstructed neighboring pixels are disclosed. In one embodiment, color index encoding or decoding is applied to the current pixel indices by deriving index prediction from neighboring pixel indices of the reconstructed neighboring pixels. The reconstructed neighboring pixel values are first transformed into the neighboring pixel indices according to a quantization table to map between major color indices and major color values of the current block. The quantization table can be based on a major color table for the current block or can also be derived at a decoder side. The decoding process may reconstruct the current pixels by converting decoded current pixel indices to reconstructed current pixel values according to the quantization table or by directly copying the reconstructed neighboring pixel values indicated by decoded current pixel indices.

公开(公告)号：US10003810B2

公开(公告)日：2018-06-19

申请号：US14378965

申请日：2013-03-19

Applicant: MEDIATEK INC.

Inventor： Tzu-Der Chuang ,  Ching-Yeh Chen ,  Yu-Wen Huang ,  Jian-Liang Lin ,  Yi-Wen Chen ,  Shih-Ta Hsiang ,  Shan Liu ,  Shaw-Min Lei

IPC: H04N19/33 ,  H04N19/52 ,  H04N19/577 ,  H04N19/96

CPC classification number: H04N19/33 ,  H04N19/52 ,  H04N19/577 ,  H04N19/96

Abstract: A method and apparatus for coding video data using Inter prediction mode or Merge mode in a video coding system are disclosed, where the video data is configured into a Base Layer (BL) and an Enhancement Layer (EL), and the EL has higher spatial resolution or better video quality than the BL. In one embodiment, at least one information piece of motion information associated with one or more BL blocks in the BL is identified. A motion vector prediction (MVP) candidate list or a Merge candidate list for the selected block in the EL is then determined, where said at least one information piece associated with said one or more BL blocks in the BL is included in the MVP candidate list or the Merge candidate list. The input data associated with the selected block is coded or decoded using the MVP candidate list or the Merge candidate list.

公开(公告)号：US20180020248A1

公开(公告)日：2018-01-18

申请号：US15646837

申请日：2017-07-11

Applicant: MEDIATEK INC.

Inventor： Wang Lin Lai ,  Shan Liu

IPC: H04N21/2343 ,  H04N21/4728 ,  H04N21/437 ,  H04N21/218 ,  H04N21/435 ,  H04N21/235 ,  H04N21/81 ,  H04N21/4402

Abstract: Aspects of the disclosure provide an apparatus that includes an interface circuit, a processing circuit and a display device. The interface circuit is configured to receive media description information of media data. The media data includes a plurality of segment streams having different coverage in spatial domain for video content, the media description information is indicative of the different coverage in spatial domain of the plurality of segment streams. The processing circuit is configured to determine one or more segment streams based on a region of interests for image generation and the different coverage in spatial domain of the plurality of segment streams, select segments in the one or more segment streams, and cause the interface circuit to request and receive the selected segments. The display device is configured to display images generated based on the selected segments.