公开(公告)号：US20200382806A1

公开(公告)日：2020-12-03

申请号：US16882819

申请日：2020-05-26

Applicant: Apple Inc.

Inventor： Dazhong ZHANG ,  Peikang SONG ,  Beibei WANG ,  Giribalan GOPALAN ,  Albert E. KEINATH ,  Christopher M. GARRIDO ,  David R. CONRAD ,  Hsi-Jung WU ,  Ming JIN ,  Hang YUAN ,  Xiaohua YANG ,  Xiaosong ZHOU ,  Vikrant KASARABADA ,  Davide CONCION ,  Eric L. CHIEN ,  Bess C. CHAN ,  Karthick SANTHANAM ,  Gurtej Singh CHANDOK

IPC: H04N19/507 ,  H04N19/65

Abstract: Techniques are disclosed for coding video data in which frames from a video source are partitioned into a plurality of tiles of common size, and the tiles are coded as a virtual video sequence according to motion-compensated prediction, each tile treated as having respective temporal location of the virtual video sequence. The coding scheme permits relative allocation of coding resources to tiles that are likely to have greater significance in a video coding session, which may lead to certain tiles that have low complexity or low motion content to be skipped during coding of the tiles for select source frames. Moreover, coding of the tiles may be ordered to achieve low coding latencies during a coding session.

公开(公告)号：US20190104446A1

公开(公告)日：2019-04-04

申请号：US16145078

申请日：2018-09-27

Applicant: Apple Inc.

Inventor： Joe S. ABUAN ,  Ian J. BAIRD ,  Xiaosong ZHOU ,  Christopher M. GARRIDO ,  Dazhong ZHANG ,  Keith W. RAUENBUEHLER ,  Yan YANG ,  Patrick MIAUTON ,  Eric L. CHEN ,  Berkat S. TUNG ,  Karthick SANTHANAM

IPC: H04W36/00 ,  G06F9/48 ,  H04L29/06 ,  H04W36/02

Abstract: A device implementing the subject technology may include at least one processor configured to receive an indication of a task being performed at an other device. The at least one processor is further configured to perform, in response to receipt of the indication, one or more preliminary operations in anticipation of receiving a handoff of the task. The at least one processor is further configured to receive, after performing the one or more preliminary operations, a notification that the task is being handed off. The at least one processor is further configured to receive the handoff of the task from the other device. The at least one processor is further configured to continue to perform the task based at least in part on the one or more preliminary operations that were performed prior to receiving the notification that the task is being handed off.

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：US20190104448A1

公开(公告)日：2019-04-04

申请号：US16145055

申请日：2018-09-27

Applicant: Apple Inc.

Inventor： Joe S. ABUAN ,  Ian J. BAIRD ,  Xiaosong ZHOU ,  Christopher M. GARRIDO ,  Dazhong ZHANG ,  Keith W. RAUENBUEHLER ,  Yan YANG ,  Patrick MIAUTON ,  Eric L. CHIEN ,  Berkat S. TUNG ,  Karthick SANTHANAM

IPC: H04W36/00 ,  H04W36/02 ,  H04L29/08 ,  H04L9/08

Abstract: A device implementing the subject technology may include at least one processor configured to receive a plurality of buffer reports from a plurality of other devices, each of the plurality of buffer reports indicating a current target buffer level for a respective one of the plurality of other devices. The at least one processor may be further configured to determine a group target buffer level based at least in part on the current target buffer levels of the plurality of other devices and a current target buffer level of the at least one buffer. The at least one processor may be further configured to transmit the group target buffer level to the plurality of other devices. The at least one processor may be further configured to manage an occupancy of the at least one buffer based at least in part on the group target buffer level.

公开(公告)号：US20190103983A1

公开(公告)日：2019-04-04

申请号：US16145071

申请日：2018-09-27

Applicant: Apple Inc.

Inventor： Joe S. ABUAN ,  Ian J. BAIRD ,  Xiaosong ZHOU ,  Christopher M. GARRIDO ,  Dazhong ZHANG ,  Keith W. RAUENBUEHLER ,  Yan YANG ,  Patrick MIAUTON ,  Eric L. CHIEN ,  Berkat S. TUNG ,  Karthick SANTHANAM

IPC: H04L12/18 ,  H04L29/06

Abstract: A device implementing the subject technology may include at least one processor configured to transmit an allocation request requesting allocation of a group communication session with a plurality of devices and receive an allocation response in response to the allocation request, the allocation response including credential information for the device to use to join the group communication session. The at least one processor may be further configured to transmit an allocation bind request with the credential information to join the group communication session using the credential information and receive an allocation bind success response in response to the allocation bind request, the allocation bind success response indicating that the device has joined the group communication session. The at least one processor may be further configured to provide a join notification to the plurality of devices via an intermediary device to notify that the device has joined the group communication session.

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。