公开(公告)号：US20170026648A1

公开(公告)日：2017-01-26

申请号：US15209774

申请日：2016-07-14

Applicant: MEDIATEK INC.

Inventor： Ming-Long Wu ,  Sheng-Jen Wang ,  Chia-Yun Cheng ,  Yu-Cheng Chu ,  Hao-Chun Chung ,  Shen-Kai Chang ,  Yung-Chang Chang

IPC: H04N19/13 ,  H04N19/44 ,  H04N19/42 ,  H04N19/176

CPC classification number: H04N19/13 ,  H04N19/46

Abstract: A hybrid video decoder has a hardware decoding circuit, a software decoding circuit, and a meta-data access system. The hardware decoding circuit deals with a first portion of a video decoding process for at least a portion of a frame, wherein the first portion of the video decoding process includes entropy decoding. The software decoding circuit deals with a second portion of the video decoding process. The meta-data access system manages meta data transferred between the hardware decoding circuit and the software decoding circuit.

Abstract translation: 混合视频解码器具有硬件解码电路，软件解码电路和元数据访问系统。 硬件解码电路处理帧的至少一部分的视频解码处理的第一部分，其中视频解码处理的第一部分包括熵解码。 软件解码电路处理视频解码过程的第二部分。 元数据访问系统管理在硬件解码电路和软件解码电路之间传送的元数据。

公开(公告)号：US12143612B2

公开(公告)日：2024-11-12

申请号：US17855829

申请日：2022-07-01

Applicant: MEDIATEK INC.

Inventor： Sheng-Jen Wang ,  Chao-I Wu ,  Ming-Long Wu ,  Chia-Yun Cheng

IPC: H04N19/00 ,  H04N19/13 ,  H04N19/423 ,  H04N19/44

Abstract: A context-based adaptive binary arithmetic coding (CABAC) decoder includes a bin decode circuit and a context update circuit. The bin decode circuit supports decoding of multiple bins in one cycle. The multiple bins include a first bin and a second bin. The bin decode circuit generates a bin value of the first bin according to a first set of multiple contexts, a first range and a first offset, and generates one bin value of the second bin according to a second set of multiple contexts, a second range and a second offset. The context update circuit updates the first set of multiple contexts in response to the bin value of the first bin, to generate a first set of multiple updated contexts, and updates the second set of multiple contexts in response to said one bin value of the second bin, to generate a second set of multiple updated contexts.

公开(公告)号：US11876990B2

公开(公告)日：2024-01-16

申请号：US17571566

申请日：2022-01-10

Applicant: MEDIATEK INC.

Inventor： Sheng-Jen Wang ,  Ming-Long Wu

IPC: H04N19/423 ,  H04N19/70 ,  H04N19/176 ,  H04N19/129 ,  H04N19/60 ,  H04N19/124 ,  H04N19/119

CPC classification number: H04N19/423 ,  H04N19/119 ,  H04N19/124 ,  H04N19/129 ,  H04N19/176 ,  H04N19/60 ,  H04N19/70

Abstract: A video residual decoding apparatus is used for applying residual decoding to a transform block that is divided into sub-blocks, and includes a residual decoding circuit and a storage device. The residual decoding circuit enters a coefficient loop for decoding one or more syntax elements at each of coefficient positions within a sub-block that has at least one non-zero coefficient level. The coefficient loop includes one decoding pass and at least one other decoding pass. During the at least one other decoding pass, the residual decoding circuit records side information in the storage device, where the side information is indicative of specific coefficient positions at which specific syntax elements need to be decoded in the one decoding pass. During the one decoding pass, the residual decoding circuit refers to the side information for decoding the specific syntax elements at the specific coefficient positions, respectively.

公开(公告)号：US10205957B2

公开(公告)日：2019-02-12

申请号：US14997691

申请日：2016-01-18

Applicant: MediaTek Inc.

Inventor： Chia-Yun Cheng ,  Sheng-Jen Wang ,  Yung-Chang Chang

IPC: H04N19/44 ,  H04N19/174 ,  H04N19/91 ,  H04N19/42 ,  H04N19/70

Abstract: An apparatus for multi-standard bin decoding in a video decoder for decoding two video coded in two different video coding standards is disclosed. The apparatus includes a first bin decoder to decode one or more first bin strings, a second bin decoder to decode one or more second bin strings, a standard change control module coupled to the first bin decoder and the second bin decoder and a system controller coupled to the standard change control module, the first bin decoder and the second bin decoder. The standard change control module or the system controller selects either a next slice or picture to be decoded by the first bin decoder or the second bin decoder based on one or more control parameters including the decoding time information.

公开(公告)号：US20170244967A1

公开(公告)日：2017-08-24

申请号：US15439964

申请日：2017-02-23

Applicant: MEDIATEK INC.

Inventor： Sheng-Jen Wang ,  Yung-Chang Chang ,  Chia-Yun Cheng

IPC: H04N19/13 ,  G06F13/28 ,  H04N19/70

CPC classification number: H04N19/13 ,  G06F13/28 ,  H04N19/42 ,  H04N19/70 ,  H04N19/91

Abstract: A video processing apparatus includes an external storage device, a hardware entropy engine, and a software execution engine. The hardware entropy engine performs entropy processing of a current picture, and further outputs count information to the external storage device during the entropy processing of the current picture. When loaded and executed by the software execution engine, a software program instructs the software execution engine to convert the count information into count table contents, and generate a count table in the external storage device according to at least the count table contents. The count table is referenced to apply a backward adaptation to a probability table that is selectively used by the hardware entropy engine to perform entropy processing of a next picture.

公开(公告)号：US20170019679A1

公开(公告)日：2017-01-19

申请号：US15202538

申请日：2016-07-05

Applicant: MEDIATEK INC.

Inventor： Sheng-Jen Wang ,  Ming-Long Wu ,  Chia-Yun Cheng ,  Yung-Chang Chang ,  Hao-Chun Chung ,  Yu-Cheng Chu ,  Shen-Kai Chang

IPC: H04N19/50 ,  H04N19/176 ,  H04N19/91 ,  H04N19/70 ,  H04N19/44

CPC classification number: H04N19/91 ,  H04N19/423 ,  H04N19/433

Abstract: A hybrid video decoding apparatus has a hardware entropy decoder and a storage device. The hardware entropy decoder performs hardware entropy decoding to generate an entropy decoding result of a picture. The storage device has a plurality of storage areas allocated to buffer a plurality of entropy-decoded partial data, respectively, and is further arranged to store position information indicative of storage positions of the entropy-decoded partial data in the storage device. The entropy-decoded partial data are derived from the entropy decoding result of the picture, and are associated with a plurality of portions of the picture, respectively.

Abstract translation: 混合视频解码装置具有硬件熵解码器和存储装置。 硬件熵解码器执行硬件熵解码以产生图像的熵解码结果。 存储装置具有分配用于分别缓冲多个熵解码的部分数据的多个存储区域，并且还被布置为将表示熵解码的部分数据的存储位置的位置信息存储在存储装置中。 熵解码的部分数据从图像的熵解码结果导出，并分别与图像的多个部分相关联。