公开(公告)号：US20230269400A1

公开(公告)日：2023-08-24

申请号：US18181261

申请日：2023-03-09

Applicant: Apple Inc.

Inventor： Xiaohua YANG ,  Alexandros TOURAPIS ,  Dazhong ZHANG ,  Hang YUAN ,  Hsi-Jung WU ,  Jae Hoon KIM ,  Jiefu ZHAI ,  Ming CHEN ,  Xiaosong ZHOU

IPC: H04N19/90 ,  H04N19/52 ,  H04N19/597 ,  G06F3/01 ,  H04N21/2343

CPC classification number: H04N19/90 ,  H04N19/52 ,  H04N19/597 ,  G06F3/013 ,  H04N21/234345

Abstract: In communication applications, aggregate source image data at a transmitter exceeds the data that is needed to display a rendering of a viewport at a receiver. Improved streaming techniques that include estimating a location of a viewport at a future time. According to such techniques, the viewport may represent a portion of an image from a multi-directional video to be displayed at the future time, and tile(s) of the image may be identified in which the viewport is estimated to be located. In these techniques, the image data of tile(s) in which the viewport is estimated to be located may be requested at a first service tier, and the other tile in which the viewport is not estimated to be located may be requested at a second service tier, lower than the first service tier.

公开(公告)号：US20160353118A1

公开(公告)日：2016-12-01

申请号：US15169072

申请日：2016-05-31

Applicant: Apple Inc.

Inventor： Dazhong ZHANG ,  Hsi-Jung WU ,  Peikang SONG ,  Yunfei ZHENG ,  Chris Y. CHUNG ,  Jae Hoon KIM ,  Xiaosong ZHOU

IPC: H04N19/184 ,  H04N19/44 ,  H04N19/37 ,  H04N19/40

CPC classification number: H04N19/44 ,  H04N19/85

Abstract: A method of managing resources on a terminal includes determining a number of downloaded video streams active at the terminal, prioritizing the active video streams, assigning a decoding quality level to each active video stream based on a priority assignment for each active video stream, and apportioning reception bandwidth to each active video stream based on an assigned quality level of each active video stream.

Abstract translation: 一种在终端上管理资源的方法包括：确定在终端处活动的下载的视频流的数量，对活动视频流进行优先排序，基于每个活动视频流的优先级分配向每个活动视频流分配解码质量等级，以及分配 基于每个活动视频流的分配质量水平对每个活动视频流的接收带宽。

公开(公告)号：US20210185361A1

公开(公告)日：2021-06-17

申请号：US17188473

申请日：2021-03-01

Applicant: Apple Inc.

Inventor： Xiaohua YANG ,  Alexandros TOURAPIS ,  Dazhong ZHANG ,  Hang YUAN ,  Hsi-Jung WU ,  Jae Hoon KIM ,  Jiefu ZHAI ,  Ming CHEN ,  Xiaosong ZHOU

IPC: H04N19/90 ,  H04N19/52 ,  H04N19/597 ,  G06F3/01 ,  H04N21/2343

Abstract: In communication applications, aggregate source image data at a transmitter exceeds the data that is needed to display a rendering of a viewport at a receiver. Improved streaming techniques that include estimating a location of a viewport at a future time. According to such techniques, the viewport may represent a portion of an image from a multi-directional video to be displayed at the future time, and tile(s) of the image may be identified in which the viewport is estimated to be located. In these techniques, the image data of tile(s) in which the viewport is estimated to be located may be requested at a first service tier, and the other tile in which the viewport is not estimated to be located may be requested at a second service tier, lower than the first service tier.

公开(公告)号：US20200177927A1

公开(公告)日：2020-06-04

申请号：US16204792

申请日：2018-11-29

Applicant: Apple Inc.

Inventor： Xiaohua YANG ,  Alexandros TOURAPIS ,  Dazhong ZHANG ,  Hang YUAN ,  Hsi-Jung WU ,  Jae Hoon KIM ,  Jiefu ZHAI ,  Ming CHEN ,  Xiaosong ZHOU

IPC: H04N19/90 ,  H04N21/2343 ,  G06F3/01 ,  H04N19/597 ,  H04N19/52

Abstract: In communication applications, aggregate source image data at a transmitter exceeds the data that is needed to display a rendering of a viewport at a receiver. Improved streaming techniques that include estimating a location of a viewport at a future time. According to such techniques, the viewport may represent a portion of an image from a multi-directional video to be displayed at the future time, and tile(s) of the image may be identified in which the viewport is estimated to be located. In these techniques, the image data of tile(s) in which the viewport is estimated to be located may be requested at a first service tier, and the other tile in which the viewport is not estimated to be located may be requested at a second service tier, lower than the first service tier.

公开(公告)号：US20170347112A1

公开(公告)日：2017-11-30

申请号：US15168872

申请日：2016-05-31

Applicant: Apple Inc.

Inventor： Dazhong ZHANG ,  Jae Hoon KIM ,  Peikang SONG ,  Xiaosong ZHOU ,  Chris CHUNG ,  Hsi-Jung WU

IPC: H04N19/46 ,  H04L12/741 ,  H04L5/00 ,  H04L29/06 ,  H04N19/68

CPC classification number: H04N19/46 ,  H04L5/0055 ,  H04L45/745 ,  H04L65/602 ,  H04L65/607 ,  H04L65/608 ,  H04L65/80 ,  H04N19/68

Abstract: Coding and decoding techniques are disclosed in which a plurality of coding parameter sets is transmitted between an encoder and a decoder, each of which is distinguishable from the others by a respective identifier. When a new frame of video is to be coded, an encoder may identify a coding parameter set to be applied during coding, it may code the new frame according to the identified coding parameter set, and it may transmit the coded frame to the decoder along with an identifier of the coding parameter set used during the coding. A plurality of coding parameter sets is persistent at an encoder and the decoder simultaneously.

公开(公告)号：US20240397119A1

公开(公告)日：2024-11-28

申请号：US18797415

申请日：2024-08-07

Applicant: Apple Inc.

Inventor： Xiaohua YANG ,  Alexandros TOURAPIS ,  Dazhong ZHANG ,  Hang YUAN ,  Hsi-Jung WU ,  Jae Hoon KIM ,  Jiefu ZHAI ,  Ming CHEN ,  Xiaosong ZHOU

IPC: H04N19/90 ,  G06F3/01 ,  H04N19/52 ,  H04N19/597 ,  H04N21/2343

Abstract: In communication applications, aggregate source image data at a transmitter exceeds the data that is needed to display a rendering of a viewport at a receiver. Improved streaming techniques that include estimating a location of a viewport at a future time. According to such techniques, the viewport may represent a portion of an image from a multi-directional video to be displayed at the future time, and tile(s) of the image may be identified in which the viewport is estimated to be located. In these techniques, the image data of tile(s) in which the viewport is estimated to be located may be requested at a first service tier, and the other tile in which the viewport is not estimated to be located may be requested at a second service tier, lower than the first service tier.