公开(公告)号：US20160191935A1

公开(公告)日：2016-06-30

申请号：US14979578

申请日：2015-12-28

Applicant: MEDIATEK INC.

Inventor： Ping Chao ,  Chia-Yun Cheng ,  Chih-Ming Wang ,  Yung-Chang Chang

IPC: H04N19/423 ,  G06F5/06 ,  H04N19/44 ,  G06F12/08

CPC classification number: H04N19/423 ,  G06F5/065 ,  G06F12/0811 ,  G06F2205/067 ,  G06F2212/283 ,  H04N19/127 ,  H04N19/172 ,  H04N19/436 ,  H04N19/44

Abstract: A multi-core decoder system and an associated method use a decoding progress synchronizer to reduce bandwidth consumption for decoding a video bitstream is disclosed. In one embodiment of the present invention, the multi-core decoder system includes a shared reference data buffer coupled to the multiple decoder cores and an external memory. The shared reference data buffer stores reference data received from the external memory and provides the reference data the multiple decoder cores for decoding video data. The multi-core decoder system also includes one or more decoding progress synchronizers coupled to the multiple decoder cores to detect decoding-progress information associated with the multiple decoder cores or status information of the shared reference data buffer, and to control decoding progress for the multiple decoder cores.

Abstract translation: 公开了一种多核解码器系统和相关联的方法，使用解码进步同步器来减少用于解码视频比特流的带宽消耗。 在本发明的一个实施例中，多核解码器系统包括耦合到多个解码器核心的共享参考数据缓冲器和外部存储器。 共享参考数据缓冲器存储从外部存储器接收的参考数据，并为参考数据提供用于解码视频数据的多个解码器核心。 多核解码器系统还包括耦合到多个解码器核心的一个或多个解码进步同步器，以检测与多个解码器核心相关联的解码进度信息或共享参考数据缓冲器的状态信息，并且控制多个解码器的解码进程 解码器核心。

公开(公告)号：US10366467B1

公开(公告)日：2019-07-30

申请号：US15678118

申请日：2017-08-16

Applicant: MEDIATEK INC.

Inventor： Tsu-Ming Liu ,  Ping Chao ,  Yung-Chang Chang

IPC: G06T1/60 ,  G06T9/00 ,  G09G5/00

Abstract: A method for storing data of an image frame into a frame buffer includes at least the following steps: dividing the image frame into a plurality of access units, each having at least one encoding unit, wherein each encoding unit is a unit for data compression; and performing the data compression upon each encoding unit of the image frame, and generating an output bitstream to the frame buffer based on a data compression result of the encoding unit. A processing result of each access unit includes each output bitstream of the at least one encoding unit included in the access unit; a plurality of processing results of the access units are stored in a plurality of storage spaces allocated in the frame buffer, respectively; and a size of each of the storage spaces is equal to a size of a corresponding access unit.

公开(公告)号：US10306246B2

公开(公告)日：2019-05-28

申请号：US15010062

申请日：2016-01-29

Applicant: MediaTek Inc.

Inventor： Ping Chao ,  Huei-Min Lin ,  Chih-Ming Wang ,  Yung-Chang Chang

IPC: H04N19/42 ,  H04N19/82 ,  H04N19/86

Abstract: A method and apparatus for loop filter processing of reconstructed video data for a video coding system are disclosed. The system receives reconstructed video data for an image unit. The loop filter processing is applied to reconstructed pixels above a deblocking boundary of the current CTU. In order to reduce line buffer requirement and/or to reduce loop filter switching for image units, the sample adaptive offset (SAO) parameter boundary and spatial-loop-filter restricted boundary for the luma and chroma components are determined by global consideration. In one embodiment, the SAO parameter boundary and the spatial-loop-filter restricted boundary are aligned for the luma and chroma components respectively. In another embodiment, the SAO parameter boundary and the spatial-loop-filter restricted boundary for the luma and chroma components are all aligned.

公开(公告)号：US09767529B1

公开(公告)日：2017-09-19

申请号：US14574274

申请日：2014-12-17

Applicant: MEDIATEK INC.

Inventor： Tsu-Ming Liu ,  Ping Chao ,  Yung-Chang Chang

IPC: G06T9/00 ,  G09G5/00 ,  G06T1/60

CPC classification number: G06T1/60 ,  G06T9/00 ,  G09G5/001 ,  G09G5/393 ,  G09G2340/02 ,  G09G2360/12 ,  G09G2360/18

Abstract: A method for storing data of an image frame into a frame buffer includes at least the following steps: dividing the image frame into a plurality of access units, each having at least one encoding unit, wherein each encoding unit is a unit for data compression; and performing the data compression upon each encoding unit of the image frame, and generating an output bitstream to the frame buffer based on a data compression result of the encoding unit. A processing result of each access unit includes each output bitstream of the at least one encoding unit included in the access unit; a plurality of processing results of the access units are stored in a plurality of storage spaces allocated in the frame buffer, respectively; and a size of each of the storage spaces is equal to a size of a corresponding access unit.

公开(公告)号：US10397588B2

公开(公告)日：2019-08-27

申请号：US15578184

申请日：2016-06-03

Applicant: MEDIATEK INC.

Inventor： Tzu-Der Chuang ,  Ping Chao ,  Ching-Yeh Chen ,  Yu-Chen Sun ,  Chih-Ming Wang ,  Chia-Yun Cheng ,  Han-Liang Chou ,  Yu-Wen Huang

IPC: H04N19/186 ,  H04N19/51 ,  H04N19/593 ,  H04N19/423 ,  H04N19/433 ,  H04N19/176 ,  H04N19/70

Abstract: A method and apparatus of sharing an on-chip buffer or cache memory for a video coding system using coding modes including Inter prediction mode or Intra Block Copy (IntraBC) mode are disclosed. At least partial pre-deblocking reconstructed video data of a current picture is stored in an on-chip buffer or cache memory. If the current block is coded using IntraBC mode, the pre-deblocking reconstructed video data of the current picture stored in the on-chip buffer or cache memory are used to derive IntraBC prediction for the current block. In some embodiments, if the current block is coded using Inter prediction mode, Inter reference video data from the previous picture stored in the on-chip buffer or cache memory are used to derive Inter prediction for the current block. In another embodiment, the motion compensation/motion estimation unit is shared by the two modes.

公开(公告)号：US20180139464A1

公开(公告)日：2018-05-17

申请号：US15803388

申请日：2017-11-03

Applicant: MEDIATEK INC.

Inventor： Min-Hao CHIU ,  Ping Chao ,  Chia-Hung Kao ,  Huei-Min Lin ,  Hsiu-Yi Lin ,  Chi-Hung Chen ,  Chia-Yun Cheng ,  Chih-Ming Wang ,  Yung-Chang Chang

IPC: H04N19/44 ,  H04N19/423 ,  H04N19/172

Abstract: Aspects of the disclosure provide a video decoding system. The video decoding system can include a decoder core configured to selectively decode independently decodable tiles in a picture, each tile including largest coding units (LCUs) each associated with a pair of picture-based (X, Y) coordinates or tile-based (X, Y) coordinates, and memory management circuitry configured to translate one or two coordinates of a current LCU to generate one or two translated coordinates, and to determine a target memory space storing reference data for decoding the current LCU based on the one or two translated coordinates.

公开(公告)号：US09635360B2

公开(公告)日：2017-04-25

申请号：US13922481

申请日：2013-06-20

Applicant: MEDIATEK INC.

Inventor： Ping Chao ,  Huei-Min Lin ,  Yung-Chang Chang ,  Chi-Cheng Ju

IPC: H04N19/86 ,  H04N19/176 ,  H04N19/117 ,  H04N19/156 ,  H04N19/82

CPC classification number: H04N19/86 ,  H04N19/117 ,  H04N19/156 ,  H04N19/176 ,  H04N19/82

Abstract: A method and apparatus for applying DF processing and SAO processing to reconstructed video data are disclosed. The DF processing is applied to a current access element of reconstructed video data to generate DF output data and the deblocking status is determined while applying the DF processing. Status-dependent SAO processing is applied to one or more pixels of the DF output data according to the deblocking status. The status-dependent SAO processing comprises SAO processing, partial SAO processing, and no SAO processing. The SAO starting time for SAO processing is between the DF-output starting time and ending time for the current block. The DF starting time of a next block can be earlier than the SAO ending time of the current block by a period oft, where t is smaller than time difference between the DF-output starting time and the DF starting time of the next block.

公开(公告)号：US20170032559A1

公开(公告)日：2017-02-02

申请号：US15293470

申请日：2016-10-14

Applicant: MediaTek Inc.

Inventor： Ping Chao ,  Chih-Kai Chang ,  Tsu-Ming Liu ,  Chih-Ming Wang

IPC: G06T11/60 ,  G06K9/00 ,  H04N5/247

CPC classification number: H04N5/247 ,  G06F1/1626 ,  G06F1/1686 ,  G06F3/011 ,  G06F3/013 ,  G06F3/0488 ,  G06F3/04886 ,  G06T11/00 ,  G09G3/20 ,  G09G2340/12 ,  H04N5/23293

Abstract: Methods and apparatuses pertaining to a simulated transparent device may involve capturing a first image of a surrounding of the display with a first camera, as well as capturing a second image of the user with a second camera. The methods and apparatuses may further involve constructing a see-through window of the first image, wherein, when presented on the display, the see-through window substantially matches the surrounding and creates a visual effect with which at least a portion of the display is substantially transparent to the user. The methods and apparatuses may further involve presenting the see-through window on the display. The constructing of the see-through window may involve computing a set of cropping parameters, a set of deforming parameters, or a combination of both, based on a spatial relationship among the surrounding, the display, and the user.

Abstract translation: 与模拟的透明设备相关的方法和设备可以涉及用第一相机捕获显示器周围的第一图像，以及用第二相机拍摄用户的第二图像。 所述方法和装置还可以包括构建第一图像的透视窗口，其中当在显示器上呈现时，透视窗口基本上与周围相匹配并且产生视觉效果，至少一部分显示器 对用户基本透明。 方法和装置还可以包括在显示器上呈现透视窗口。 透视窗口的构建可以涉及基于周围环境，显示器和用户之间的空间关系来计算一组裁剪参数，一组变形参数或两者的组合。

公开(公告)号：US20140036992A1

公开(公告)日：2014-02-06

申请号：US13922481

申请日：2013-06-20

Applicant: MEDIATEK INC.

Inventor： Ping Chao ,  Huei-Min Lin ,  Yung-Chang Chang ,  Chi-Cheng Ju

IPC: H04N7/26

CPC classification number: H04N19/86 ,  H04N19/117 ,  H04N19/156 ,  H04N19/176 ,  H04N19/82

Abstract: A method and apparatus for applying DF processing and SAO processing to reconstructed video data are disclosed. The DF processing is applied to a current access element of reconstructed video data to generate DF output data and the deblocking status is determined while applying the DF processing. Status-dependent SAO processing is applied to one or more pixels of the DF output data according to the deblocking status. The status-dependent SAO processing comprises SAO processing, partial SAO processing, and no SAO processing. The SAO starting time for SAO processing is between the DF-output starting time and ending time for the current block. The DF starting time of a next block can be earlier than the SAO ending time of the current block by a period oft, where t is smaller than time difference between the DF-output starting time and the DF starting time of the next block.

Abstract translation: 公开了一种用于对重构的视频数据应用DF处理和SAO处理的方法和装置。 DF处理被应用于重构的视频数据的当前访问元件以产生DF输出数据，并且在应用DF处理的同时确定去块状态。 根据去块状态，将状态依赖的SAO处理应用于DF输出数据的一个或多个像素。 状态依赖性SAO处理包括SAO处理，部分SAO处理，无SAO处理。 SAO处理的SAO启动时间在当前块的DF输出开始时间和结束时间之间。 下一个块的DF开始时间可以比当前块的SAO结束时间早一个时间t，其中t小于DF输出开始时间和下一个块的DF开始时间之间的时间差。

公开(公告)号：US20200213624A1

公开(公告)日：2020-07-02

申请号：US16815957

申请日：2020-03-11

Applicant: MEDIATEK INC.

Inventor： Ping Chao ,  Chih-Ming Wang ,  Yung-Chang Chang

IPC: H04N19/82 ,  H04N19/42 ,  H04N19/423

Abstract: Aspects of the disclosure provide a method and a circuit for adaptive loop filtering in a video coding system. The method can include receiving a block of samples generated from a previous-stage filter circuit in a filter pipeline, the block of samples being one of multiple blocks included in a current picture, performing, in parallel, adaptive loop filter (ALF) processing for multiple target samples in the block of samples, while the previous-stage filter circuit is simultaneously processing another block in the current picture, storing, in a buffer, first samples each having a filter input area defined by a filter shape that includes at least one sample which has not been received, and storing, in the buffer, second samples included in the filter input areas of the first samples.