公开(公告)号：US20230092305A1

公开(公告)日：2023-03-23

申请号：US18052807

申请日：2022-11-04

Applicant: Apple Inc.

Inventor： Sorin C. Cismas ,  Jim C. Chou ,  Ling Su ,  Keangpo R. Ho

IPC: H04N19/37 ,  H04N19/119 ,  H04N19/164 ,  H04N19/167 ,  H04N19/174 ,  H04N19/176 ,  H04N19/169 ,  H04N19/46 ,  H04N19/63

Abstract: A video encoding system in which pixel data is decomposed into frequency bands prior to encoding. The frequency bands are organized into blocks that are provided to a block-based encoder that encodes the blocks and passes the encoded blocks to a wireless interface that packetizes the blocks for transmittal over a wireless connection. The encoder may categorize the encoded frequency bands into multiple priority levels, and may tag each frequency block with metadata indicating the frequency band represented in the block, the priority of the frequency band, and timing information. The wireless interface may then transmit or drop packets according to the priority levels of the encoded frequency blocks in the packets and/or according to the timing information of the frequency blocks in the packets.

公开(公告)号：US20230079090A1

公开(公告)日：2023-03-16

申请号：US17675823

申请日：2022-02-18

Applicant: Apple Inc.

Inventor： Ganesh G. Yadav ,  Sorin C. Cismas

IPC: H04N19/436 ,  H04N19/176 ,  H04N19/423 ,  H04N19/40 ,  H04N19/186

Abstract: The present disclosure relates to systems and methods of multi-pipe scheduling for image decoding. For example, a bitstream may include compressed slices that are scheduled to each of the multiple decoding pipelines present in the image processing circuitry of an electronic device. The bitstream may include image data that was encoded using variable-length coding. This results in some bits of the image data containing denser and/or sparser syntax elements and result in variable processing times. The scheduling circuitry may be able to monitor each of the multiple decoder pipelines rate of bit consumption and the number of bits initially scheduled to each of the multiple pipelines and the number of bits consumed by each of the multiple pipelines over time so that incoming compressed slices may be scheduled to the pipe that will be able to process the compressed slice the fastest.

公开(公告)号：US20210274200A1

公开(公告)日：2021-09-02

申请号：US17252697

申请日：2019-06-27

Applicant: Apple Inc.

Inventor： Sorin C. Cismas ,  Jim C. Chou ,  Ling Su ,  Keangpo R. Ho

IPC: H04N19/37 ,  H04N19/176 ,  H04N19/169 ,  H04N19/63 ,  H04N19/164 ,  H04N19/167 ,  H04N19/46 ,  H04N19/174 ,  H04N19/119

Abstract: A video encoding system in which pixel data is decomposed into frequency bands prior to encoding. The frequency bands are organized into blocks that are provided to a block-based encoder that encodes the blocks and passes the encoded blocks to a wireless interface that packetizes the blocks for transmittal over a wireless connection. The encoder may categorize the encoded frequency bands into multiple priority levels, and may tag each frequency block with metadata indicating the frequency band represented in the block, the priority of the frequency band, and timing information. The wireless interface may then transmit or drop packets according to the priority levels of the encoded frequency blocks in the packets and/or according to the timing information of the frequency blocks in the packets.

公开(公告)号：US10757445B2

公开(公告)日：2020-08-25

申请号：US16173105

申请日：2018-10-29

Applicant: Apple Inc.

Inventor： Alexandros Tourapis ,  David W. Singer ,  Haitao Guo ,  Hsi-Jung Wu ,  Sorin C. Cismas ,  Xiaohua Yang ,  Yeping Su ,  Dazhong Zhang

IPC: H04N19/593 ,  H04N19/156 ,  H04N19/44 ,  H04N19/176 ,  H04N19/182 ,  H04N19/174

Abstract: Methods are described for encoding and decoding blocks of image data using intra block copying (IBC). A source block for intra block copying is selected from a source region of a current image that is closer to the current block than a threshold, wherein the source region does not include a portion of the current image that is further from the current block than the threshold.

公开(公告)号：US20180091815A1

公开(公告)日：2018-03-29

申请号：US15275373

申请日：2016-09-24

Applicant: Apple Inc.

Inventor： Abheek Banerjee ,  Syed Muhammad A. Rizvi ,  Yaxiong Zhou ,  Sorin C. Cismas

IPC: H04N19/13 ,  H04N19/70 ,  H04N19/21 ,  H04N19/436

CPC classification number: H04N19/13 ,  H04N19/21 ,  H04N19/42 ,  H04N19/436 ,  H04N19/44 ,  H04N19/70 ,  H04N19/91

Abstract: Systems and methods for improving decoding of encoded image data using parallel multi-bin decoding are provided. In one embodiment, multiple context bins per cycle are decoded for a set of syntax elements, by decoupling and/or retiming particular syntax parsing and/or arithmetic decoding tasks of the decoding process.