公开(公告)号：US20160134673A1

公开(公告)日：2016-05-12

申请号：US14923113

申请日：2015-10-26

Applicant: Broadcom Corporation

Inventor： Alexander Garland MacInnis

IPC: H04L29/06

CPC classification number: H04L65/60 ,  H04L65/4069 ,  H04L65/602 ,  H04L65/80

Abstract: Methods and systems for early identification of bitrates for segments in adaptive bitrate streaming can allow the server to begin processing or transcoding content as necessary for delivery, reducing processing and transmission latency. In a first aspect, a client may request a second segment before the first segment has been completely received. The server may begin any transcoding processes for preparing the second segment, and once the server has completed sending the first segment, the server may begin transmitting the now-prepared or partially prepared second segment. The server can then transmit the first and second segment contiguously, with essentially no network dead time. In a second aspect, the client may transmit an early notification of parameters for the request of the second segment, allowing the server to begin transcoding. The client may subsequently request the already-prepared or partially prepared second segment, similarly reducing request-response processing latency.

Abstract translation: 用于早期识别自适应比特率流中段的比特率的方法和系统可以允许服务器根据需要开始处理或转码内容，从而减少处理和传输等待时间。 在第一方面，客户端可以在第一段被完全接收之前请求第二段。 服务器可以开始用于准备第二段的任何代码转换过程，并且一旦服务器完成发送第一段，服务器可以开始发送现在准备好或部分准备好的第二段。 然后，服务器可以基本上没有网络死区时间连续传输第一和第二段。 在第二方面，客户端可以传送关于第二段的请求的参数的早期通知，允许服务器开始转码。 客户端可以随后请求已经准备好或部分准备的第二段，类似地减少请求 - 响应处理等待时间。

公开(公告)号：US09241169B2

公开(公告)日：2016-01-19

申请号：US14157471

申请日：2014-01-16

Applicant: BROADCOM CORPORATION

Inventor： Alexander Garland MacInnis

IPC: G06K9/36 ,  H04N19/40 ,  G06T9/00 ,  H04N19/48 ,  H04N19/61 ,  H04N19/433 ,  H04N19/85 ,  G06F13/28 ,  H04N21/44 ,  G06F12/02

CPC classification number: H04N19/40 ,  G06F12/0207 ,  G06F13/28 ,  G06T9/00 ,  H04N19/423 ,  H04N19/433 ,  H04N19/48 ,  H04N19/61 ,  H04N19/85 ,  H04N21/44004

Abstract: A system for raster to block conversion in a compressed domain may include a raster to block encoder, a raster to block decoder, and a memory partitioned into a number of memory stripes having widths of a number of bits. The raster to block encoder may be configured to receive image information associated with pixels of an image in raster order, compress the image information associated with the pixels of the image to generate compressed bits that correspond to at least one of memory stripes, and write the compressed bits to the at least one of the memory stripes. The raster to block decoder may be configured to read, from at least one of the memory stripes of the memory, a number of the compressed bits that correspond to at least one block, and decode the number of the compressed bits to generate the at least one block.

Abstract translation: 用于光栅到块压缩域中的转换的系统可以包括光栅到块编码器，光栅到块解码器，以及分割成多个具有多个位宽的存储条的存储器条。 光栅到块编码器可以被配置为以光栅顺序接收与图像的像素相关联的图像信息，压缩与图像的像素相关联的图像信息，以生成对应于存储条的至少一个的压缩位， 压缩比特到该至少一个存储条。 光栅到块解码器可以被配置为从存储器的存储条的至少一个读取与至少一个块相对应的多个压缩位，并且解码压缩位的数量以至少产生 一块

公开(公告)号：US20140173676A1

公开(公告)日：2014-06-19

申请号：US14188871

申请日：2014-02-25

Applicant: Broadcom Corporation

Inventor： Alexander Garland MacInnis

IPC: H04N21/438 ,  H04N21/472 ,  H04N21/845 ,  H04N21/44 ,  H04N21/238 ,  H04N21/24

CPC classification number: H04N21/4384 ,  H04N21/23406 ,  H04N21/23608 ,  H04N21/23805 ,  H04N21/2401 ,  H04N21/2402 ,  H04N21/242 ,  H04N21/4383 ,  H04N21/44004 ,  H04N21/472 ,  H04N21/6581 ,  H04N21/8456

Abstract: A request for a unit of video information is received from a remote video receiver. An initial transmission rate for the unit of video information is determined based at least in part on a decoder model and a typical steady-state transmission rate for the unit of video information. The initial transmission rate is faster than the typical steady-state transmission rate. For a first time period after receiving the request, a first portion of the unit of video information is transmitted to the remote video receiver at the initial transmission rate. The first time period, the initial transmission rate, or both are determined so as not to overflow an input buffer that is based at least in part on the decoder model. For a second time period after the first time period, a second portion of the unit of video information is transmitted to the remote video receiver at the typical steady-state transmission rate.

Abstract translation: 从远程视频接收器接收对视频信息单元的请求。 至少部分地基于视频信息单元的解码器模型和典型的稳态传输速率来确定视频信息单元的初始传输速率。 初始传输速率比典型的稳态传输速率快。 在接收到请求之后的第一时间段中，视频信息单元的第一部分以初始传输速率被发送到远程视频接收机。 第一时间段，初始传输速率或两者都被确定为不会至少部分地基于解码器模型溢出输入缓冲器。 在第一时间段之后的第二时间段，以典型的稳态传输速率将视频信息单元的第二部分发送到远程视频接收机。

公开(公告)号：US20140160139A1

公开(公告)日：2014-06-12

申请号：US14180226

申请日：2014-02-13

Applicant: Broadcom Corporation

Inventor： Alexander Garland MacInnis ,  Frederick George Walls

IPC: G06T1/60

CPC classification number: G06T1/60 ,  H04N19/124 ,  H04N19/14 ,  H04N19/152 ,  H04N19/182 ,  H04N19/46

Abstract: A system implements rate control for encoding and decoding operations, for example, operations performed on slices of data such as image data. The system implements fine-grained bit rate control allowing for non-integer bit rates to be specified for the system. The non-integer values may allow the system to more accurately characterize a data rate of a communication link between a source and sink. The more accurate characterization may facilitate improved utilization of the communication link capacity.

Abstract translation: 系统实现用于编码和解码操作的速率控制，例如对诸如图像数据的数据片执行的操作。 该系统实现细粒度比特率控制，允许为系统指定非整数比特率。 非整数值可以允许系统更准确地表征源和汇之间的通信链路的数据速率。 更准确的表征可以有助于改善通信链路容量的利用。

公开(公告)号：US20140092960A1

公开(公告)日：2014-04-03

申请号：US14044612

申请日：2013-10-02

Applicant: Broadcom Corporation

Inventor： Alexander Garland MacInnis ,  Frederick George Walls

IPC: H04N7/26

CPC classification number: H04N19/152 ,  H04N19/124 ,  H04N19/149 ,  H04N19/174

Abstract: A system implements rate control for encoding and decoding operations, for example, operations performed on slices of data such as image data. The system implements a transformation from actual buffer fullness to rate controlled fullness. With the rate controlled fullness model, the encoders and decoders adapt bit allocation responsive to rate controlled fullness, instead of the actual fullness.

Abstract translation: 系统实现用于编码和解码操作的速率控制，例如对诸如图像数据的数据片执行的操作。 系统实现从实际缓冲区丰满度到速率控制丰度的转换。 利用速率控制丰度模型，编码器和解码器可以根据速率控制的丰满度来适应位分配，而不是实际的丰满度。

公开(公告)号：US09635334B2

公开(公告)日：2017-04-25

申请号：US14041024

申请日：2013-09-30

Applicant: Broadcom Corporation

Inventor： Alexander Garland MacInnis ,  Hongtao Zhu ,  Jason William Herrick ,  Brian Francis Schoner ,  Junlin Li

IPC: H04N5/932 ,  H04N9/80 ,  H04N19/436 ,  H04N19/40 ,  H04N21/242 ,  H04N5/91 ,  H04N9/79 ,  H04N21/845 ,  H04N21/8547 ,  H04N9/82

CPC classification number: H04N9/80 ,  H04N5/91 ,  H04N9/7921 ,  H04N9/8205 ,  H04N19/40 ,  H04N19/436 ,  H04N21/242 ,  H04N21/8456 ,  H04N21/8547

Abstract: Disclosed are various embodiments directed to transcoding a bit stream comprising audio and video frames that contains discontinuities. The video and/or audio portion of the bit stream may be divided into segments, where some of the segments are transcoded in parallel using a plurality of transcoder devices. In some embodiments, a discontinuity is detected in the bit stream before encoding, where the discontinuity is associated with a shift in a set of time stamps associated with the bit stream. A magnitude of the discontinuity is determined. The transcoding system aligns at least a portion of the audio frames to the series of video frames according to at least the discontinuity and the magnitude of the discontinuity. In other embodiments, the discontinuity is detected after encoding by analyzing time stamps that have been established during the transcoding process.

公开(公告)号：US09402098B2

公开(公告)日：2016-07-26

申请号：US14188871

申请日：2014-02-25

Applicant: Broadcom Corporation

Inventor： Alexander Garland MacInnis

IPC: H04N7/173 ,  G06F11/00 ,  H04N21/438 ,  H04N21/234 ,  H04N21/236 ,  H04N21/238 ,  H04N21/24 ,  H04N21/242 ,  H04N21/44 ,  H04N21/472 ,  H04N21/658 ,  H04N21/845

CPC classification number: H04N21/4384 ,  H04N21/23406 ,  H04N21/23608 ,  H04N21/23805 ,  H04N21/2401 ,  H04N21/2402 ,  H04N21/242 ,  H04N21/4383 ,  H04N21/44004 ,  H04N21/472 ,  H04N21/6581 ,  H04N21/8456

Abstract: A request for a unit of video information is received from a remote video receiver. An initial transmission rate for the unit of video information is determined based at least in part on a decoder model and a typical steady-state transmission rate for the unit of video information. The initial transmission rate is faster than the typical steady-state transmission rate. For a first time period after receiving the request, a first portion of the unit of video information is transmitted to the remote video receiver at the initial transmission rate. The first time period, the initial transmission rate, or both are determined so as not to overflow an input buffer that is based at least in part on the decoder model. For a second time period after the first time period, a second portion of the unit of video information is transmitted to the remote video receiver at the typical steady-state transmission rate.

Abstract translation: 从远程视频接收器接收对视频信息单元的请求。 至少部分地基于视频信息单元的解码器模型和典型的稳态传输速率来确定视频信息单元的初始传输速率。 初始传输速率比典型的稳态传输速率快。 在接收到请求之后的第一时间段中，视频信息单元的第一部分以初始传输速率被发送到远程视频接收机。 第一时间段，初始传输速率或两者都被确定为不会至少部分地基于解码器模型溢出输入缓冲器。 在第一时间段之后的第二时间段，以典型的稳态传输速率将视频信息单元的第二部分发送到远程视频接收机。

公开(公告)号：US09319289B2

公开(公告)日：2016-04-19

申请号：US14020704

申请日：2013-09-06

Applicant: BROADCOM CORPORATION

Inventor： Alexander Garland MacInnis ,  Rajesh Shankarrao Mamidwar

IPC: G06F15/16 ,  H04L12/26 ,  H04L29/06 ,  H04L29/08

CPC classification number: H04L43/08 ,  H04L65/00 ,  H04L65/602 ,  H04L65/608 ,  H04L65/80 ,  H04L67/00

Abstract: A device for providing adaptive bit rate streaming that includes a first transcoder configured to transcode a video stream based at least in part on an encoding characteristic to generate a first transcoded video stream, a network monitor configured to monitor network conditions including a network bandwidth of a network, an adjustment module configured to cause the transcoder to adjust the encoding characteristic in response to a change in the network conditions, an advertising module configured to advertise to a client device an ABR profile that corresponds to the first transcoded video stream, wherein the advertising module updates the advertised single ABR profile when the at least one encoding characteristic is adjusted, and a network interface configured to transmit segments of the first transcoded video stream to the client device via the network in response to requests therefor.

Abstract translation: 一种用于提供自适应比特率流的设备，其包括被配置为至少部分地基于编码特性对视频流进行代码转换的第一代码转换器，以生成第一代码转换的视频流;网络监视器，被配置为监视网络条件，包括网络带宽 网络，调整模块，被配置为使得所述代码转换器响应于所述网络条件的变化而调整所述编码特性;广告模块，被配置为向所述客户端设备通告对应于所述第一转码视频流的ABR简档，其中，所述广告 当调整所述至少一个编码特性时，模块更新所发布的单个ABR简档，以及网络接口，被配置为响应于其请求，经由网络将第一代码转换的视频流的段发送到客户端设备。

公开(公告)号：US09198096B2

公开(公告)日：2015-11-24

申请号：US14143507

申请日：2013-12-30

Applicant: Broadcom Corporation

Inventor： Thomas Quigley ,  Alexander Garland MacInnis ,  Arya Reza Behzad ,  Jeyhan Karaoguz ,  John Walley ,  Mark Buer

IPC: H04W36/00 ,  H04W40/24 ,  H04W4/00 ,  H04W84/18

CPC classification number: H04W36/0072 ,  H04W4/80 ,  H04W40/246 ,  H04W40/248 ,  H04W84/18

Abstract: A Wireless mobile communication (WMC) device may maintain user preference information, which is unique to the WMC device capabilities and the device user. WMC devices located in near proximity of each other may be enabled to form an ad hoc wireless network wherein each WMC device within the network may function as a router for other devices. Utilizing such routing capability within an ad hoc wireless network may allow WMC devices that are out of their wireless coverage area to use other WMC devices within such ad hoc wireless network to route any impending communication through such other WMC devices wherein these devices may have wireless connectivity to their coverage networks. WMC devices that are may have external connectivity may be enable to be selective in routing information and/or data from other WMC devices in the ad hoc network.

Abstract translation: 无线移动通信（WMC）设备可以维护用户偏好信息，这是WMC设备能力和设备用户唯一的。 位于彼此靠近的WMC设备可以被启用以形成自组织无线网络，其中网络内的每个WMC设备可以用作其他设备的路由器。 利用在自组织无线网络内的这种路由能力可以允许在它们的无线覆盖区域之外的WMC设备使用这样的自组织无线网络内的其他WMC设备来路由任何即将进行的通信通过这样的其他WMC设备，其中这些设备可以具有无线连接 到他们的覆盖网络。 可能具有外部连接性的WMC设备可以在路由信息和/或来自自组织网络中的其他WMC设备的数据中有选择性。

公开(公告)号：US08928804B2

公开(公告)日：2015-01-06

申请号：US13840026

申请日：2013-03-15

Applicant: Broadcom Corporation

Inventor： Alexander Garland MacInnis ,  Hongtao Zhu ,  Jason William Herrick ,  Brian Francis Schoner ,  Junlin Li

IPC: H04N7/01 ,  H04N7/26 ,  H04N19/40 ,  H04N19/124 ,  H04N19/146 ,  H04N19/436

CPC classification number: H04N19/40 ,  H04N19/124 ,  H04N19/146 ,  H04N19/154 ,  H04N19/174 ,  H04N19/436

Abstract: Disclosed are various embodiments directed to transcoding a bit stream in parallel. A bit stream may be divided into a plurality of segments, where a plurality of transcoders encode at least a portion of the segments in parallel. If encoding is performed using variable bit rate (BR) encoding, each encoder may encode a segment and vary a BR for the segment. A measured average BR is compared with a target average BR to determine whether to adjust a video quality level (VQL) or any other encoder parameter. A relatively constant subjective quality may be maintained using variable BR encoding while achieving a target average BR. When using constant BR encoding, a VQL or other encoder parameter is used by encoders to achieve relatively constant subjective quality. For example, a relatively continuous quantization parameter between adjacent encoded segments may be achieved.

Abstract translation: 公开了针对并行地对码流进行代码转换的各种实施例。 比特流可以被划分成多个段，其中多个代码转换器并行地对段的至少一部分进行编码。 如果使用可变比特率（BR）编码来执行编码，则每个编码器可以对段进行编码并改变段的BR。 将测量的平均BR与目标平均BR进行比较，以确定是否调整视频质量水平（VQL）或任何其他编码器参数。 可以使用可变BR编码来维持相对恒定的主观质量，同时实现目标平均BR。 当使用常数BR编码时，编码器使用VQL或其他编码器参数来实现相对恒定的主观质量。 例如，可以实现相邻编码段之间相对连续的量化参数。