公开(公告)号：US20160192030A1

公开(公告)日：2016-06-30

申请号：US15061916

申请日：2016-03-04

Applicant: BROADCOM CORPORATION

Inventor： Hongtao ZHU ,  Alexander Garland MACINNIS

IPC: H04N21/6587 ,  H04N21/2187 ,  H04N21/845 ,  H04N21/2387 ,  H04N21/242 ,  H04N19/40 ,  H04N21/2343

CPC classification number: H04N21/6587 ,  H04N19/40 ,  H04N21/2187 ,  H04N21/234336 ,  H04N21/23439 ,  H04N21/2387 ,  H04N21/242 ,  H04N21/8456 ,  H04N21/85406

Abstract: A method for performing trick-mode operations with decreased latency for transcode streaming includes receiving and recording a stream of video data. A single transcoder may transcode the stream of video data and generate output video data in an output buffer following. Segmentation index information may be generated that refers to the output data in the output buffer. Skip-backwards, skip-ahead, and resume requests received from a client device are responded by retrieving transcoded video data from the output buffer or retrieving and transcoding video data from an input storage. A method for performing skip-ahead trick-mode operation with decreased latency may use two transcoders such as two threads of the single transcoder to transcode temporally current content and forward content. The forward content may be associated with a forward time offset with respect to the temporally current content. The transcoded forward content is provided in response to skip-ahead trick mode request.

Abstract translation: 用于以降低的代码转换流程执行特技模式操作的方法包括接收和记录视频数据流。 单个代码转换器可对视频数据流进行代码转换，并在输出缓冲器之后生成输出视频数据。 可以生成指向输出缓冲器中的输出数据的分段索引信息。 通过从输出缓冲器检索经转码的视频数据或从输入存储器检索和代码转换视频数据来响应从客户端设备接收到的向后，向前，跳过和恢复请求。 用于以降低的延迟执行跳过特技模式操作的方法可以使用诸如单个代码转换器的两个线程的两个代码转码器对时间上当前的内容进行转码并转发内容。 前向内容可以与相对于时间上的当前内容的前向时间偏移相关联。 响应于跳过提示特技模式请求提供经转码的前向内容。

公开(公告)号：US20140355625A1

公开(公告)日：2014-12-04

申请号：US13938157

申请日：2013-07-09

Applicant: Broadcom Corporation

Inventor： Xuemin CHEN ,  Yong LI ,  Rajesh Shankarrao MAMIDWAR ,  Hongtao ZHU

IPC: H04L12/24

CPC classification number: H04L65/1026 ,  H04L65/4084 ,  H04L65/605

Abstract: A distributed adaptive bit rate (ABR) proxy system may include a gateway device that includes a first transcoder and is configured to receive segments of a content item from an ABR server, and a secondary device that includes a second transcoder and is configured to receive the segments of the content item from the gateway device. The first transcoder may transcode the segments based at least in part on a first ABR profile to generate first transcoded segments, and the second transcoder may transcode the segments based at least in part on a second ABR profile to generate second transcoded segments. The gateway device may advertise the first and second ABR profiles to user devices and may transmit the first transcoded segments to the user devices in response to requests therefor. The secondary device may transmit the second transcoded segments to the user devices in response to requests therefor.

Abstract translation: 分布式自适应比特率（ABR）代理系统可以包括网关设备，其包括第一代码转换器，并且被配置为从ABR服务器接收内容项目的段，以及辅助设备，其包括第二代码转换器，并且被配置为接收 来自网关设备的内容项的段。 第一代码转换器可以至少部分地基于第一ABR简档对段进行代码转换以产生第一代码转换的段，并且第二代码转换器可以至少部分地基于第二ABR简档对段进行代码转换，以生成第二代码转换段。 网关设备可以向用户设备通告第一和第二ABR简档，并且可以响应于其请求将第一代码转换的段传送到用户设备。 辅助设备可以响应于其请求将第二代码转换的段传送到用户设备。

公开(公告)号：US20140317372A1

公开(公告)日：2014-10-23

申请号：US13922186

申请日：2013-06-19

Applicant: Broadcom Corporation

Inventor： Jason William HERRICK ,  Hongtao ZHU

IPC: G06F12/14

Abstract: A method of securing a data frame is provided. The method includes receiving a request from a memory client to read or write decoded data in a memory. The memory may be partitioned to have a secure memory region and an unsecure memory region. The method also includes determining if the request is associated with the secure memory region or the unsecure memory region. The method also includes determining whether the memory client has access privileges to the secure memory region if the request is associated with the secure memory region. The method also includes granting the request if the memory client is determined to have access privileges.

Abstract translation: 提供了一种保护数据帧的方法。 该方法包括从存储器客户端接收请求以读取或写入存储器中的解码数据。 存储器可以被分割成具有安全的存储器区域和不安全的存储器区域。 该方法还包括确定请求是否与安全存储器区域或不安全存储器区域相关联。 该方法还包括如果请求与安全存储器区域相关联，则确定存储器客户端是否具有对安全存储器区域的访问权限。 如果确定存储器客户端具有访问权限，则该方法还包括授予请求。