公开(公告)号：US20130290698A1

公开(公告)日：2013-10-31

申请号：US13871889

申请日：2013-04-26

Applicant: FUTUREWEI TECHNOLOGIES, INC.

Inventor： Alexander Giladi ,  Shaobo Zhang

IPC: H04L9/18

CPC classification number: H04L9/065 ,  G06F17/30887 ,  H04L9/088 ,  H04L65/602 ,  H04L65/607 ,  H04L67/02 ,  H04L2209/60 ,  H04N21/26258 ,  H04N21/4408 ,  H04N21/4627 ,  H04N21/6125 ,  H04N21/6373 ,  H04N21/835 ,  H04N21/8456 ,  H04N21/8586

Abstract: System and method embodiments are provided herein for efficient representation and use of initialization vectors (IVs) for encrypted segments using template mode representation in Dynamic Adaptive Streaming over Hypertext Transfer Protocol (DASH). An embodiment method includes sending in a media presentation description (MPD), from a network server to a client, a template for generating a universal resource locator (URL) to obtain an IV that is used for encrypting a segment, in absence of an IV value in the MPD, receiving from the client a URL configured according to the template, and upon receiving the URL, returning an IV corresponding to the URL to the client. Another embodiment method includes receiving in a MPD, at a client from a network server, a template for generating a URL to obtain an IV that is used for encrypting a segment, upon detecting an absence of an IV value or IV base value in the MPD, configuring a URL for the IV using the template, sending the URL for the IV, and receiving an IV.

Abstract translation: 本文提供了系统和方法实施例，用于在超文本传输​​协议（DASH）的动态自适应流中使用模板模式表示来有效地表示和使用用于加密段的初始化向量（IV）。 一种实施方式包括在媒体呈现描述（MPD）中从网络服务器向客户端发送用于生成通用资源定位符（URL）的模板，以获得用于加密段的IV，在没有IV MPD中的值，从客户端接收根据模板配置的URL，并且在接收到URL时，将与该URL相对应的IV返回给客户端。 另一个实施方式包括在MPD中从网络服务器在客户端处接收用于生成URL的模板，以便在检测到MPD中没有IV值或IV基值时，获得用于加密段的IV ，使用模板配置IV的URL，发送IV的URL，并接收IV。

公开(公告)号：US10911511B2

公开(公告)日：2021-02-02

申请号：US15975671

申请日：2018-05-09

Applicant: Futurewei Technologies, Inc.

Inventor： Alexander Giladi

IPC: H04L29/06 ,  H04N21/2343 ,  H04N21/236 ,  H04N21/2362 ,  H04N21/61 ,  H04N21/845

Abstract: A method of media streaming implemented by a network device, the method comprising encapsulating a message box into one or more packets in a segment, and sending the segment directly or indirectly to a streaming client.

公开(公告)号：US09444794B2

公开(公告)日：2016-09-13

申请号：US13934837

申请日：2013-07-03

Applicant: Futurewei Technologies, Inc.

Inventor： Alexander Giladi

IPC: H04L29/06

CPC classification number: H04L63/0428 ,  H04L9/083 ,  H04L63/168

Abstract: An apparatus comprising a memory, a processor coupled to the memory and configured to obtain a Dynamic Adaptive Streaming over Hypertext Transfer Protocol (HTTP) (DASH) Media Presentation Description (MPD) from an HTTP server, wherein the MPD describes a media presentation as at least one encrypted segment, and wherein the encrypted segment is associated with an availability time and a decryption key, and prefetch the decryption key associated with the encrypted segment by requesting the decryption key from a key server prior to the availability time of the encrypted segment.

Abstract translation: 一种装置，包括存储器，处理器，其耦合到所述存储器并且被配置为从HTTP服务器获得超文本传输​​协议（HTTP）（DASH）媒体呈现描述（MPD）的动态自适应流，其中所述MPD描述如 至少一个加密段，并且其中所述加密段与可用时间和解密密钥相关联，并且在加密段的可用时间之前从密钥服务器请求解密密钥来预取与所述加密段相关联的解密密钥。

公开(公告)号：US20160205162A1

公开(公告)日：2016-07-14

申请号：US15075703

申请日：2016-03-21

Applicant: Futurewei Technologies, Inc.

Inventor： Shaobo Zhang ,  Xin Wang ,  Alexander Giladi ,  Xin Liu ,  Yangpo Xu ,  Changquan Ai ,  Peiyun Di

IPC: H04L29/06 ,  H04L29/08

CPC classification number: H04L65/601 ,  H04L65/602 ,  H04L65/607 ,  H04L65/608 ,  H04L65/80 ,  H04L67/02

Abstract: A method for adaptive streaming of a media content, wherein the method comprises receiving a media presentation description that provides presentation information for the media content, determining a plurality of representations from the media presentation description that comprise segments that are provided with bitrate and quality information, selecting a media segment that meets a desired quality level to download from one of the representations, updating a buffered media time for downloading the media segment, and determining when to switch to another representation by comparing the buffered media time to a switching threshold value.

Abstract translation: 一种用于媒体内容的自适应流传输的方法，其中所述方法包括接收媒体呈现描述，所述媒体呈现描述提供所述媒体内容的呈现信息，从所述媒体呈现描述中确定多个表示，所述表示包括具有比特率和质量信息的段， 选择满足期望质量水平的媒体片段以从表示中的一个下载，更新用于下载媒体片段的缓冲媒体时间，以及通过将缓冲的媒体时间与切换阈值进行比较来确定何时切换到另一表示。

公开(公告)号：US09246971B2

公开(公告)日：2016-01-26

申请号：US14020227

申请日：2013-09-06

Applicant: FutureWei Technologies, Inc.

Inventor： Alexander Giladi

IPC: G06F15/16 ,  H04L29/06

CPC classification number: H04L65/607 ,  H04L65/4084 ,  H04L65/605

Abstract: Embodiments are provided for segment demarcation and identification in adaptive streaming by enabling marking chunks according to multiple standards simultaneously. An encoder boundary point (EBP) structure is used to indicate a plurality of partitions corresponding to a plurality of representations for a same content. A partition is a set of continuous chunks within a media stream of a defined length according to a corresponding standard. The EBP structure includes a bit-mask that is set to indicate one or more partitions in the stream. The EBP structure can indicate a boundary point for more than two partitions allowing a stream to be partitioned in several ways according to different standards. Additionally, a program map table (PMT) descriptor is used to describe each partition, providing information to process each partition. The PMT descriptor includes a packet identifier (PID) value for packets containing EBP structures.

Abstract translation: 通过同时实现多个标准的标记块，为自适应流中的段划分和识别提供了实施例。 编码器边界点（EBP）结构用于指示对应于相同内容的多个表示的多个分区。 分区是根据相应的标准在一定长度的媒体流内的一组连续块。 EBP结构包括设置为指示流中的一个或多个分区的位掩码。 EBP结构可以指示多于两个分区的边界点，允许根据不同标准以多种方式对流进行分区。 另外，程序映射表（PMT）描述符用于描述每个分区，提供处理每个分区的信息。 PMT描述符包括包含EBP结构的分组的分组标识符（PID）值。

公开(公告)号：US20140317307A1

公开(公告)日：2014-10-23

申请号：US14256422

申请日：2014-04-18

Applicant: Futurewei Technologies, Inc.

Inventor： Alexander Giladi

IPC: H04L29/06

CPC classification number: H04L65/608 ,  H04L65/602 ,  H04L65/80

Abstract: A method of Dynamic Adaptive Streaming over Hypertext Transfer Protocol (HTTP) (DASH) comprising receiving an asset that comprises a media presentation described in a media presentation description (MPD), wherein the media presentation comprises one or more periods, and wherein each period comprises at least one adaptation set, and identifying the asset on a period level using one or more asset identifiers specified in the MPD.

Abstract translation: 一种在超文本传输​​协议（HTTP）（DASH）上的动态自适应流的方法，包括接收包括在媒体呈现描述（MPD）中描述的媒体呈现的资产，其中所述媒体呈现包括一个或多个周期，并且其中每个周期包括 至少一个适配集合，以及使用MPD中指定的一个或多个资产标识来识别期间级别上的资产。

公开(公告)号：US20140156865A1

公开(公告)日：2014-06-05

申请号：US14091409

申请日：2013-11-27

Applicant: Futurewei Technologies, Inc.

Inventor： Alexander Giladi

IPC: H04L29/06

CPC classification number: H04L65/608 ,  H04L65/4084

Abstract: A method for preparing media content in a Dynamic Adaptive Streaming over Hypertext Transfer Protocol (DASH), comprising generating a parameter that comprises an identifier associated with a string value and encoding the parameter within a media presentation description (MPD), wherein the parameter is configured to be set with a parameter value independently of when the MPD is generated, and wherein the MPD provides presentation information for a media content. In another embodiment, a method for adaptive streaming of a media content in a DASH, comprising receiving an MPD that provides presentation information for the media content, determining one or more generic parameters within the MPD, and substituting one or more values for the generic parameters obtained from the MPD, wherein the generic parameters reference at least one of the following: attributes within the MPD, remote elements not available during MPD generation, and streaming client applications.

Abstract translation: 一种用于在动态自适应流超文本传输​​协议（DASH）中准备媒体内容的方法，包括生成包括与字符串值相关联的标识符并在媒体呈现描述（MPD）内对该参数进行编码）的参数，其中配置参数 被设置为独立于生成MPD时的参数值，并且其中MPD提供媒体内容的呈现信息。 在另一个实施例中，一种用于DASH中的媒体内容的自适应流传输的方法，包括：接收提供媒体内容的呈现信息的MPD，确定MPD内的一个或多个通用参数，以及将一个或多个值替换为一般参数 从MPD获得，其中通用参数引用以下中的至少一个：MPD内的属性，在MPD生成期间不可用的远程元素以及流客户端应用。

公开(公告)号：US20140101445A1

公开(公告)日：2014-04-10

申请号：US14049609

申请日：2013-10-09

Applicant: Futurewei Technologies, Inc.

Inventor： Alexander Giladi

IPC: H04L29/06

CPC classification number: H04L63/0428 ,  H04L9/0637 ,  H04L9/0668 ,  H04L9/0816 ,  H04L2209/24 ,  H04L2209/60 ,  H04N21/23476 ,  H04N21/25816

Abstract: A server apparatus supporting authenticated encryption in a network, comprising a receiver configured to receive an unencrypted segment, a processor configured to selecting an encryption key, an initialization vector, and an additional authentication data (AAD), encrypt the segment, configuring the segment for transfer in a Dynamic Adaptive Streaming over Hypertext Transfer Protocol (HTTP) (DASH) media, assign a segment number to the encrypted segment, append an authentication tag to the encrypted segment, store the encrypted segment with the appended authentication tag, and update a Media Presentation Description (MPD) associated with the encrypted segment with the appended authentication tag, wherein the MPD comprises an @aadBase attribute with an AAD base value, wherein the AAD value is the sum of the segment number and the @ aadBase attribute value, and a transmitter configured to transmit the encrypted segment with the appended authentication tag to a destination.

Abstract translation: 一种在网络中支持认证加密的服务器装置，包括被配置为接收未加密段的接收机，被配置为选择加密密钥的处理器，初始化向量和附加认证数据（AAD），加密段，为 在超文本传输​​协议（HTTP）（DASH）媒体中的动态自适应流中传输，为加密段分配段号，将认证标签附加到加密段，存储具有附加认证标签的加密段，并更新媒体 与加密段相关联的与所附加的认证标签相关联的呈现描述（MPD），其中MPD包括具有AAD基值的@aadBase属性，其中AAD值是段号和@ aadBase属性值的和， 发送器被配置为将加密的段与附加的认证标签发送到目的地。

公开(公告)号：US20140013375A1

公开(公告)日：2014-01-09

申请号：US13937661

申请日：2013-07-09

Applicant: Futurewei Technologies, Inc.

Inventor： Alexander Giladi

IPC: H04N21/858

CPC classification number: H04L65/601 ,  H04L65/00 ,  H04L65/4084 ,  H04L65/60 ,  H04L65/602 ,  H04L65/604 ,  H04L65/607 ,  H04L65/608 ,  H04L67/02 ,  H04L67/108 ,  H04L67/303 ,  H04L67/306 ,  H04N21/23439 ,  H04N21/2393 ,  H04N21/26258 ,  H04N21/4355 ,  H04N21/4402 ,  H04N21/6377 ,  H04N21/647 ,  H04N21/6543 ,  H04N21/812 ,  H04N21/8456

Abstract: An apparatus comprises a receiver configured to receive a request for a Dynamic Adaptive Streaming over Hypertext Transfer Protocol (DASH) media presentation description (MPD), a processor coupled to the receiver and configured to create the MPD, wherein the MPD comprises a mechanism for specifying a client's behavior, and wherein the mechanism conditions the client's ability to download content on the client's ability to support a feature, and a transmitter coupled to the processor and configured to transmit the MPD. A method comprises receiving a request for a Dynamic Adaptive Streaming over Hypertext Transfer Protocol (DASH) media presentation description (MPD), and transmitting the MPD, wherein the MPD comprises a mechanism for specifying a client's behavior, and wherein the mechanism conditions the client's ability to download content on the client's ability to support a feature.

Abstract translation: 一种装置包括：接收器，被配置为接收对超文本传输​​协议（DASH）媒体呈现描述（DDR）的动态自适应流的请求，耦合到所述接收机并被配置为创建所述MPD的处理器，其中所述MPD包括用于指定 客户端的行为，并且其中机制使得客户端能够根据客户端支持特征的能力下载内容，以及耦合到处理器并被配置为传送MPD的发射机。 一种方法包括接收对超文本传输​​协议（DASH）媒体呈现描述（MPD）的动态自适应流的请求，以及发送所述MPD，其中所述MPD包括用于指定客户端行为的机制，并且其中所述机制限制所述客户端的能力 根据客户端的功能下载内容。

公开(公告)号：US20130290556A1

公开(公告)日：2013-10-31

申请号：US13870736

申请日：2013-04-25

Applicant: FUTUREWEI TECHNOLOGIES, INC.

Inventor： Alexander Giladi

IPC: H04L29/06

CPC classification number: H04L65/60 ,  H04L65/604 ,  H04L65/608 ,  H04L67/02 ,  H04N21/23424 ,  H04N21/812

Abstract: System and method embodiments are provided for controlling end client behavior in dynamic adaptive streaming over hypertext transfer protocol (HTTP) (DASH). In an embodiment, the method includes receiving, at the end client, a DASH Motion Picture Experts Group (MPEG)-2 stream (TS) segment, wherein the DASH MPEG-2 TS segment includes segmentation descriptors, and performing, with the end client, an action, such as a media presentation description (MPD) reload, indicated by the segmentation descriptor. In an embodiment, the segmentation descriptor conforms to a Society of Cable Telecommunications Engineers (SCTE) 35 protocol or a HTTP live streaming (HLS) protocol.

Abstract translation: 提供了系统和方法实施例，用于控制超文本传输​​协议（HTTP）（DASH）中的动态自适应流中的终端客户端行为。 在一个实施例中，该方法包括在终端客户端处接收DASH运动图像专家组（MPEG）-2流（TS）段，其中DASH MPEG-2TS段包括分段描述符，并且与终端客户端 ，由分段描述符指示的诸如媒体呈现描述（MPD）重新加载的动作。 在一个实施例中，分割描述符符合有线电信工程师协会（SCTE）35协议或HTTP实况流（HLS）协议。