公开(公告)号：US10298901B2

公开(公告)日：2019-05-21

申请号：US14582628

申请日：2014-12-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yangpo Xu ,  Xin Liu ,  Peiyun Di

IPC: H04N5/06 ,  H04N9/87 ,  H04N21/414 ,  H04N21/43 ,  H04N21/436 ,  H04L7/08 ,  G11B20/10 ,  H04L29/06

Abstract: Embodiments of the present invention provide a method for synchronous playback by multiple smart devices, and an apparatus. A first device acquires frame synchronization information at intervals of a preset time, and sends the frame synchronization information to one or more second devices, where the frame synchronization information is frame information of a frame to be played by the first device or frame information of a frame that the first device starts to play currently; and after learning the frame synchronization information sent by the first device, the second device adjusts frame resources played by itself. Because the multiple smart devices that perform synchronous playback are generally in one local area network, a transmission delay of frame information from the first device to the second device can be ignored, thereby improving a synchronization effect among the multiple smart devices.

公开(公告)号：US12301930B2

公开(公告)日：2025-05-13

申请号：US17737837

申请日：2022-05-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianbin Liu ,  Er Li ,  Jun Cao ,  Zongwu Wu ,  Yangpo Xu ,  Tizheng Wang

IPC: H04N21/44 ,  G06F3/04815 ,  G06F3/04845 ,  G06T19/00 ,  G06T19/20 ,  H04N21/472 ,  H04N21/488

Abstract: Methods, devices, and systems for digital space management in virtual reality and augmented reality are described. A method can include a terminal that logs in to a preset application based on a first user identifier, presents a first interface, where the first interface includes a virtual space registration option. In response to an enabling operation of a user for the virtual space registration option, the terminal photographs a first scene to obtain a preview stream, obtains a target geometry, and sends the first user identifier, the preview stream, and the target geometry to a server. The preview stream and the target geometry are used to determine a target virtual space in which a user with the first user identifier has virtual content editing permission in a first virtual space. The first virtual space is a virtual space corresponding to a real world including the first scene. The target geometry is used to represent a form of the target virtual space.

公开(公告)号：US20220264176A1

公开(公告)日：2022-08-18

申请号：US17737837

申请日：2022-05-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD

Inventor： Jianbin Liu ,  Er Li ,  Jun Cao ,  Zongwu Wu ,  Yangpo Xu ,  Tizheng Wang

IPC: H04N21/44 ,  H04N21/472 ,  H04N21/488 ,  G06T19/20 ,  G06F3/04815 ,  G06F3/04845

Abstract: Methods, devices, and systems for digital space management in virtual reality and augmented reality are described. A method can include a terminal that logs in to a preset application based on a first user identifier, presents a first interface, where the first interface includes a virtual space registration option. In response to an enabling operation of a user for the virtual space registration option, the terminal photographs a first scene to obtain a preview stream, obtains a target geometry, and sends the first user identifier, the preview stream, and the target geometry to a server. The preview stream and the target geometry are used to determine a target virtual space in which a user with the first user identifier has virtual content editing permission in a first virtual space. The first virtual space is a virtual space corresponding to a real world including the first scene. The target geometry is used to represent a form of the target virtual space.

公开(公告)号：US20140082683A1

公开(公告)日：2014-03-20

申请号：US14084082

申请日：2013-11-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yangpo Xu ,  XIN LIU ,  Peiyun Di ,  Zixuan Zou ,  Guanghai Chen

IPC: H04N21/438

CPC classification number: H04N21/4384 ,  H04N7/17318 ,  H04N21/23424 ,  H04N21/2401 ,  H04N21/2402 ,  H04N21/2405 ,  H04N21/64322 ,  H04N21/6581

Abstract: A channel switching processing method includes receiving, by a switching server, a channel switching request from a receiving end. When the switching server determines that current switching resource information does not meet a switching condition according to the channel switching request, the switching server performs an exception handling procedure and sends channel switching instruction information to the receiving end. The channel switching instruction information is configured to instruct the receiving end to perform a channel switching operation corresponding to the channel switching instruction information.

Abstract translation: 信道切换处理方法包括：由切换服务器从接收端接收信道切换请求。 当切换服务器根据信道切换请求确定当前切换资源信息不满足切换条件时，切换服务器执行异常处理过程，并向接收端发送信道切换指示信息。 信道切换指示信息被配置为指示接收端执行与信道切换指令信息相对应的信道切换操作。

公开(公告)号：US09628547B2

公开(公告)日：2017-04-18

申请号：US14249767

申请日：2014-04-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Changquan Ai ,  Xin Liu ,  Yangpo Xu

IPC: H04L29/08 ,  H04L29/06

CPC classification number: H04L67/06 ,  H04L65/4084 ,  H04L65/602 ,  H04L65/608 ,  H04L65/80

Abstract: Embodiments of the present invention provide media file receiving and media file sending methods, apparatuses, and systems. A media file receiving method includes: obtaining, by a client, an MPD fragment address of a first MPD fragment from a media presentation description MPD fragment index file according to a start-to-play time point requested by a user; sending, by the client, a first MPD fragment obtaining request including the MPD fragment address of the first MPD fragment to a server; receiving, by the client, the first MPD fragment fed back by the server, and sending a media segment obtaining request to the server according to media description information in the first MPD fragment; and receiving, by the client, a media segment fed back by the server. With the media receiving method according to the embodiments of the present invention, an objective of rapidly starting playing a media file can be achieved.

公开(公告)号：US20140325018A1

公开(公告)日：2014-10-30

申请号：US14249767

申请日：2014-04-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Changquan Ai ,  Xin Liu ,  Yangpo Xu

IPC: H04L29/08

CPC classification number: H04L67/06 ,  H04L65/4084 ,  H04L65/602 ,  H04L65/608 ,  H04L65/80

Abstract: Embodiments of the present invention provide media file receiving and media file sending methods, apparatuses, and systems. A media file receiving method includes: obtaining, by a client, an MPD fragment address of a first MPD fragment from a media presentation description MPD fragment index file according to a start-to-play time point requested by a user; sending, by the client, a first MPD fragment obtaining request including the MPD fragment address of the first MPD fragment to a server; receiving, by the client, the first MPD fragment fed back by the server, and sending a media segment obtaining request to the server according to media description information in the first MPD fragment; and receiving, by the client, a media segment fed back by the server. With the media receiving method according to the embodiments of the present invention, an objective of rapidly starting playing a media file can be achieved.

Abstract translation: 本发明的实施例提供媒体文件接收和媒体文件发送方法，装置和系统。 媒体文件接收方法包括：根据用户要求的开始播放时间点，由客户端从媒体呈现描述MPD片段索引文件获取第一MPD片段的MPD片段地址; 由客户端向服务器发送包含第一MPD片段的MPD片段地址的第一MPD片段获取请求; 由所述客户端接收由所述服务器反馈的所述第一MPD片段，并根据所述第一MPD片段中的媒体描述信息向所述服务器发送媒体片段获取请求; 以及由所述客户端接收由所述服务器反馈的媒体段。 利用根据本发明的实施例的媒体接收方法，可以实现快速开始播放媒体文件的目的。