公开(公告)号：US20140351385A1

公开(公告)日：2014-11-27

申请号：US14042651

申请日：2013-09-30

Applicant: Broadcom Corporation

Inventor： Yong Li ,  Xuemin Chen ,  Alexander Garland Macinnis ,  Brian Francis Schoner

IPC: H04L29/08

CPC classification number: H04L67/02 ,  G06Q30/0242 ,  H04L65/4084 ,  H04L65/601 ,  H04L65/602 ,  H04N21/2225 ,  H04N21/23439 ,  H04N21/2402 ,  H04N21/6125 ,  H04N21/8456

Abstract: A device and method for providing an adaptive bit rate (ABR) proxy is disclosed. An ABR proxy determines an optimal data format to receive content segments for an audio/video (AV) content item from a source ABR server, and generates, based on that format and/or current network conditions, one or more local AV representations for providing content segments for the AV content item to locally connected devices. A local client device selects a local AV representation, and the ABR proxy provides the content segments for the AV content item to the local device in accordance with the selected local AV representation.

Abstract translation: 公开了一种用于提供自适应比特率（ABR）代理的设备和方法。 ABR代理确定从源ABR服务器接收音频/视频（AV）内容项的内容片段的最佳数据格式，并且基于该格式和/或当前网络条件生成一个或多个本地AV表示，用于提供 AV内容项到本地连接设备的内容片段。 本地客户端设备选择本地AV表示，并且ABR代理根据所选择的本地AV表示向AV设备提供用于AV内容项目的内容片段到本地设备。

公开(公告)号：US20140153909A1

公开(公告)日：2014-06-05

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: H04N9/80 ,  H04N7/26

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.

Abstract translation: 公开了针对包含包含不连续性的音频和视频帧的位流进行代码转换的各种实施例。 比特流的视频和/或音频部分可以被划分成段，其中一些片段使用多个代码转换器装置并行地转码。 在一些实施例中，在编码之前的比特流中检测到不连续性，其中不连续性与与比特流相关联的一组时间戳的偏移相关联。 确定不连续性的大小。 代码转换系统至少根据不连续性的不连续性和幅度对准音频帧的至少一部分到视频帧系列。 在其他实施例中，通过分析在转码过程中建立的时间戳，在编码之后检测不连续性。

公开(公告)号：US20140139733A1

公开(公告)日：2014-05-22

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: H04N7/26

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。

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：US20160196632A1

公开(公告)日：2016-07-07

申请号：US14588615

申请日：2015-01-02

Applicant: Broadcom Corporation

Inventor： Brian Francis Schoner ,  Anand Pande ,  Praveen Vadakkumthodam Radhakrishnan

IPC: G06T1/60

CPC classification number: H04N19/136 ,  G06T9/00 ,  H04N19/176 ,  H04N19/463 ,  H04N19/593

Abstract: A system and method for processing graphics are provided. Pixel data may be received for a pixel block. Endpoints for the values of the pixels in the pixel block may be determined. A weight for the pixels in the pixel block may be determined in four dimensions corresponding to the endpoints. A compressed data block representative of the pixel block may be generated in response to the endpoints for the pixel block and the weight for the pixels of the pixel block in the four dimensions corresponding to the endpoints.

Abstract translation: 提供了一种用于处理图形的系统和方法。 可以针对像素块接收像素数据。 可以确定像素块中的像素的值的端点。 可以在对应于端点的四维中确定像素块中的像素的权重。 可以响应于像素块的端点和与端点对应的四维中的像素块的像素的权重来生成代表像素块的压缩数据块。

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。

公开(公告)号：US09413806B2

公开(公告)日：2016-08-09

申请号：US14042651

申请日：2013-09-30

Applicant: Broadcom Corporation

Inventor： Yong Li ,  Xuemin Chen ,  Alexander Garland Macinnis ,  Brian Francis Schoner

IPC: G06F15/173 ,  H04L29/08 ,  G06Q30/02 ,  H04L29/06 ,  H04N21/2225 ,  H04N21/2343 ,  H04N21/24 ,  H04N21/61 ,  H04N21/845

CPC classification number: H04L67/02 ,  G06Q30/0242 ,  H04L65/4084 ,  H04L65/601 ,  H04L65/602 ,  H04N21/2225 ,  H04N21/23439 ,  H04N21/2402 ,  H04N21/6125 ,  H04N21/8456

Abstract: A device and method for providing an adaptive bit rate (ABR) proxy is disclosed. An ABR proxy determines an optimal data format to receive content segments for an audio/video (AV) content item from a source ABR server, and generates, based on that format and/or current network conditions, one or more local AV representations for providing content segments for the AV content item to locally connected devices. A local client device selects a local AV representation, and the ABR proxy provides the content segments for the AV content item to the local device in accordance with the selected local AV representation.

Abstract translation: 公开了一种用于提供自适应比特率（ABR）代理的设备和方法。 ABR代理确定从源ABR服务器接收音频/视频（AV）内容项的内容片段的最佳数据格式，并且基于该格式和/或当前网络条件生成一个或多个本地AV表示，用于提供 AV内容项到本地连接设备的内容片段。 本地客户端设备选择本地AV表示，并且ABR代理根据所选择的本地AV表示向AV设备提供用于AV内容项目的内容片段到本地设备。

公开(公告)号：US09978156B2

公开(公告)日：2018-05-22

申请号：US14222004

申请日：2014-03-21

Applicant: Broadcom Corporation

Inventor： Alexander Garland MacInnis ,  Frederick George Walls ,  Brian Francis Schoner

IPC: G09G5/36 ,  G06T9/00 ,  H04N19/14 ,  H04N19/152 ,  H04N19/103 ,  H04N19/186 ,  H04N19/80

CPC classification number: G06T9/00 ,  H04N19/103 ,  H04N19/14 ,  H04N19/152 ,  H04N19/186 ,  H04N19/80

Abstract: A system implements multiple coding formats for coding pixels within a picture. The formats may be selected based on one or more of the input picture and encoding variables. The coding formats may have varying chroma sampling densities. Filtering may be applied to convert among the various formats or to convert a sampled input to a specific chroma sampling density. The format associated with various groups within a coded bitstream may be changed to adapt to evolution of the one or more variables or inputs.

公开(公告)号：US20140247983A1

公开(公告)日：2014-09-04

申请号：US14222004

申请日：2014-03-21

Applicant: Broadcom Corporation

Inventor： Alexander Garland MacInnis ,  Frederick George Walls ,  Brian Francis Schoner

IPC: G06T9/00

CPC classification number: G06T9/00 ,  H04N19/103 ,  H04N19/14 ,  H04N19/152 ,  H04N19/186 ,  H04N19/80

Abstract: A system implements multiple coding formats for coding pixels within a picture. The formats may be selected based on one or more of the input picture and encoding variables. The coding formats may have varying chroma sampling densities. Filtering may be applied to convert among the various formats or to convert a sampled input to a specific chroma sampling density. The format associated with various groups within a coded bitstream may be changed to adapt to evolution of the one or more variables or inputs.

Abstract translation: 系统实现用于编码图像内的像素的多种编码格式。 可以基于输入图像和编码变量中的一个或多个选择格式。 编码格式可以具有不同的色度采样密度。 可以应用滤波以在各种格式之间进行转换，或者将采样输入转换为特定的色度采样密度。 可以改变与编码比特流内的各个组相关联的格式以适应一个或多个变量或输入的演进。