公开(公告)号：US10123044B2

公开(公告)日：2018-11-06

申请号：US15209765

申请日：2016-07-14

Applicant: MEDIATEK INC.

Inventor： Min-Hao Chiu ,  Yu-Chuan Wang ,  Yung-Chang Chang

IPC: H04N19/60 ,  H04N19/12 ,  H04N19/62 ,  H04N19/88 ,  H04N19/547

Abstract: A partial decoding circuit with inverse second transform has a transpose buffer, a first-direction inverse residual transform circuit, and a second-direction inverse residual transform circuit. The transpose buffer stores an intermediate inverse residual transform result. The first-direction inverse residual transform circuit processes an inverse quantization output to generate the intermediate inverse residual transform result to the transpose buffer. The second-direction inverse residual transform circuit accesses the transpose buffer to retrieve the intermediate inverse residual transform result, and processes the intermediate inverse residual transform result to generate a final inverse residual transform result, where the final inverse residual transform result of the inverse second transform is further processed by an inverse transform circuit. The first-direction inverse residual transform circuit and the second-direction inverse residual transform circuit process partial residual transform data of different process units in a parallel processing manner.

公开(公告)号：US20170353738A1

公开(公告)日：2017-12-07

申请号：US15615845

申请日：2017-06-07

Applicant: MEDIATEK INC.

Inventor： Min-Hao Chiu ,  Yung-Chang Chang

IPC: H04N19/88 ,  H04N19/436 ,  H04N19/91 ,  H04N19/82

CPC classification number: H04N19/88 ,  H04N19/129 ,  H04N19/18 ,  H04N19/436 ,  H04N19/82 ,  H04N19/91

Abstract: A coefficient access method includes: receiving a coefficient generated from an entropy decoding process, wherein the received coefficient is a part of a transform block (TB); before the received coefficient is stored into an inverse scan (IS) storage device, determining a storage position of the received coefficient according to a transpose flag associated with the TB, wherein the transpose flag indicates whether or not a coefficient transpose process is needed; and after the storage position is determined, storing the received coefficient into the determined storage position in the IS storage device.

公开(公告)号：US20170251218A1

公开(公告)日：2017-08-31

申请号：US15438774

申请日：2017-02-22

Applicant: MEDIATEK INC.

Inventor： Min-Hao Chiu ,  Chia-Yun Cheng ,  Yung-Chang Chang

IPC: H04N19/44 ,  H04N19/129 ,  H04N19/436 ,  H04N19/124 ,  H04N19/60

CPC classification number: H04N19/436 ,  H04N19/61

Abstract: A residual processing circuit has a single-path pipeline and a single-path controller. The single-path pipeline has an inverse scan (IS) circuit, an inverse quantization (IQ) circuit and an inverse transform (IT) circuit arranged to process a current non-zero residual data block in a pipeline manner. The current non-zero residual data block is at least a portion of a transform unit. The single-path controller controls pipelined processing of the current non-zero residual data block at the single-path pipeline. The single-path controller instructs the IS circuit to start IS processing of a next non-zero residual data block before the IT circuit finishes a first half of IT processing of the current non-zero residual data block.

公开(公告)号：US20170006299A1

公开(公告)日：2017-01-05

申请号：US15197741

申请日：2016-06-29

Applicant: MEDIATEK INC.

Inventor： Min-Hao Chiu ,  Yung-Chang Chang

IPC: H04N19/30 ,  H04N19/18 ,  H04N19/176

CPC classification number: H04N19/18 ,  H04N19/426 ,  H04N19/436 ,  H04N19/50

Abstract: A residual up-sampling apparatus has a residual up-sampling buffer and a shared residual up-sampling circuit. The residual up-sampling buffer stores an intermediate residual up-sampling result. The shared residual up-sampling circuit employs a same processing kernel to perform a first-direction residual up-sampling operation and a second-direction residual up-sampling operation. The first-direction residual up-sampling operation processes an inverse transform output of an inverse transform circuit to generate the intermediate residual up-sampling result to the residual up-sampling buffer. The second-direction residual up-sampling operation performs transpose access upon the residual up-sampling buffer to retrieve the intermediate residual up-sampling result, and processes the intermediate residual up-sampling result to generate a final residual up-sampling result.

Abstract translation: 残余上采样装置具有残余上采样缓冲器和共享残余上采样电路。 残余上采样缓冲器存储中间残差上采样结果。 共享残余上采样电路采用相同的处理内核来执​​行第一方向剩余上采样操作和第二方向剩余上采样操作。 第一方向残余上采样操作处理逆变换电路的逆变换输出，以产生到残余上采样缓冲器的中间剩余上采样结果。 第二方向残余上采样操作对剩余上采样缓冲器执行转置访问以检索中间剩余上采样结果，并且处理中间剩余上采样结果以产生最终剩余上采样结果。

公开(公告)号：US09538174B2

公开(公告)日：2017-01-03

申请号：US13781770

申请日：2013-03-01

Applicant: MEDIATEK INC.

Inventor： Min-Hao Chiu ,  Yung-Chang Chang

IPC: H04N19/109 ,  H04N7/26 ,  H04N19/129 ,  H04N19/176 ,  H04N19/44 ,  H04N19/423

CPC classification number: H04N19/129 ,  H04N19/176 ,  H04N19/423 ,  H04N19/44

Abstract: A method and apparatus for decoding two-level scanned transform coefficients corresponding to a transform unit (TU) are disclosed. The TU is divided into sub-blocks and the transform coefficients of the TU are scanned across the sub-blocks according to a first scan pattern, and each sub-block is scanned according to a second scan pattern. In one embodiment, the sub-blocks of the transform coefficients received from the variable length decoding are stored in an inverse scan buffer (or TC buffer) and the transform coefficients are retrieved from the inverse scan buffer row-by-row or column-by-column in a selected direction after a corresponding row or column of the transform coefficients is fully received. In a system incorporating an embodiment of the present invention, at least a leading row or a leading column of the transform coefficients is available in the selected direction before a last sub-block of the transform coefficients arrives.

Abstract translation: 公开了一种用于解码对应于变换单元（TU）的两级扫描变换系数的方法和装置。 TU被划分为子块，并且根据第一扫描模式跨越子块扫描TU的变换系数，并且根据第二扫描模式来扫描每个子块。 在一个实施例中，从可变长度解码接收的变换系数的子块被存储在反向扫描缓冲器（或TC缓冲器）中，并且逐行或逐列从逆扫描缓冲器检索变换系数 在完全接收到变换系数的相应行或列之后的所选方向上的列。 在结合了本发明的实施例的系统中，在变换系数的最后一个子块到达之前，变换系数的至少一个前导行或前导列在所选方向上可用。