公开(公告)号：US20180014034A1

公开(公告)日：2018-01-11

申请号：US15542739

申请日：2016-02-05

Applicant: MEDIATEK INC.

Inventor： Wang-Lin LAI ,  Jungsun KIM ,  Tzu-Der CHUANG ,  Jing YE ,  Shan LIU

IPC: H04N19/86 ,  H04N19/176 ,  H04N19/44 ,  H04N19/186 ,  H04N19/70 ,  H04N19/593

CPC classification number: H04N19/86 ,  H04N19/176 ,  H04N19/186 ,  H04N19/44 ,  H04N19/593 ,  H04N19/70

Abstract: Methods and apparatus for image or video decoding in a video decoding system are disclosed. Input data associated with a current block coded with palette mode is received to parse a palette predictor run. A position of reused colors in a palette predictor table is computed according to the palette predictor run. A size of the palette predictor table is determined and compared with the position computed according to the palette predictor run to obtain a comparison result. The decoder applies palette decoding to the current block according to the comparison result. If the comparison result indicates the position computed according to the palette predictor run is not within the palette predictor table, the position is changed to a new position to indicate a corresponding reused color for the current block or a decoding process of palette predictor reuse flags is terminated.

公开(公告)号：US20180091829A1

公开(公告)日：2018-03-29

申请号：US15545381

申请日：2016-02-03

Applicant: MEDIATEK INC.

Inventor： Shan LIU ,  Xiaozhong XU ,  Tzu-Der CHUANG ,  Yu-Chen SUN ,  Wang-Lin LAI ,  Yu-Wen HUANG ,  Jing YE

IPC: H04N19/93 ,  H04N19/593

CPC classification number: H04N19/93 ,  H04N19/182 ,  H04N19/593 ,  H04N19/70 ,  H04N19/91

Abstract: A method of palette index map coding of blocks in a picture by grouping coded symbols of the same type is disclosed for video encoder and decoder. In one embodiment, all syntax elements corresponding to the pixel index are grouped into a pixel index group, and all syntax elements corresponding to the escape pixel are grouped into an escape pixel group. All syntax elements corresponding to the run type and run length are grouped into an interleaved run type/run length group, or grouped into separate run type group and run length group. In another embodiment, the system parses from the video bitstream a last-run mode syntax element for a current block, where the last-run mode syntax element indicates whether a last run mode is a copy-index mode or a copy-above mode. Information associated with the last-run mode syntax element is used for reconstructing palette index map.

公开(公告)号：US20210105333A1

公开(公告)日：2021-04-08

申请号：US16072908

申请日：2017-01-20

Applicant: MEDIATEK INC.

Inventor： Lulin CHEN ,  Shan LIU ,  Wang-Lin LAI

IPC: H04L29/08 ,  H04L29/06

Abstract: A method and system of multimedia streaming services using DASH (Dynamic Adaptive Streaming over HTTP) are disclosed. According to this method, one or more Push Directives are sent from a client to a server to indicate information related to media data requested. Each Push Directive comprises a Push type including Push-rate and Push-rate Directive includes information associated with a push data rate related to the media data requested. If the Push-rate Directive is received by the server, one or more groups of data for the media data requested are pushed from the server to the client according to the push data rate. According to another method, fragmented MPDS are used, where at least one fragmented MPD omits a MPD header, MPD payload, Period header or Period payload. In yet another method, a status message group includes SharedResourceAllocation message that comprises parameters including bandwidth and pacingRate.

公开(公告)号：US20200288145A1

公开(公告)日：2020-09-10

申请号：US16304207

申请日：2017-05-26

Applicant: MEDIATEK INC.

Inventor： Tzu-Der CHUANG ,  Yu-Chen SUN ,  Shan LIU ,  Ching-Yeh CHEN ,  Yu-Wen HUANG ,  Xiaozhong XU ,  Wang-Lin LAI ,  Jing YE

IPC: H04N19/157 ,  H04N19/11 ,  H04N19/119 ,  H04N19/129 ,  H04N19/176 ,  H04N19/186

Abstract: Methods and apparatus for a coding system using palette mode coding for colour video are disclosed. According to method, when the palette mode is enabled, separate coding of luma and chroma components is disabled or if separate coding of luma and chroma components, the palette mode is disabled. According to another method, when the palette mode is enabled for the current image, palette mode coding is only applied to the luma blocks and non-palette mode coding is applied to the chroma blocks. According to yet another method, palette mode coding is applied to the luma blocks using luma palettes if the palette mode is selected for the luma blocks and palette mode coding applying to the chroma blocks using chroma palettes if the palette mode is selected for the chroma blocks. According to yet another method, the scan direction for a non-square CU depends on the shape of the non-square.

公开(公告)号：US20190045238A1

公开(公告)日：2019-02-07

申请号：US16072913

申请日：2017-02-03

Applicant: MEDIATEK INC.

Inventor： Wang-Lin LAI ,  Shan LIU ,  Lulin CHEN

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

CPC classification number: H04N21/2387 ,  H04L47/365 ,  H04L65/00 ,  H04L65/4084 ,  H04L67/02 ,  H04L69/04 ,  H04N21/25 ,  H04N21/64746 ,  H04N21/6587 ,  H04N21/8456 ,  H04N21/8586

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：US20170289572A1

公开(公告)日：2017-10-05

申请号：US15505972

申请日：2015-09-02

Applicant: MEDIATEK INC.

Inventor： Jing YE ,  Shan LIU ,  Jungsun KIM ,  Wang-Lin LAI ,  Tzu-Der CHUANG ,  Yu-Chen SUN ,  Xiaozhong XU

IPC: H04N19/593 ,  H04N19/184 ,  G06F17/27 ,  H04N19/70

CPC classification number: H04N19/593 ,  G06F17/271 ,  H04N19/184 ,  H04N19/70

Abstract: A method for color index coding of blocks in a picture is disclosed. In one embodiment for the decoder side, a current coding mode is parsed from the input coded bitstream for one or more first currently decoded pixels in a current block starting from a first starting position. If the current coding mode corresponds to a generalized copy-previous-row mode, one or more first reference pixels starting from a first starting reference position located at T-th row above the first currently decoded pixels are identified, where T is an integer equal to or greater than one. The first reference pixels starting from the first starting reference position are then used to decode the first currently decoded pixels starting from a first starting position by copying the first reference pixels starting from the first starting reference position respectively. The system may also include a copy-left mode or escape mode.