公开(公告)号：US20130133020A1

公开(公告)日：2013-05-23

申请号：US13745379

申请日：2013-01-18

Applicant: Broadcom Corporation

Inventor： Weimin Feng ,  Paul McGlynn ,  David Lwin ,  David Erickson ,  Haisong Wang

IPC: H04N21/41

CPC classification number: H04N21/41 ,  H04L12/2801 ,  H04N7/165 ,  H04N21/42615 ,  H04N21/4263 ,  H04N21/42676 ,  H04N21/434 ,  H04N21/6118 ,  H04N21/6168 ,  H04N21/6175 ,  H04N21/64322 ,  H04N21/6437

Abstract: A processor for a cable television set-top box has an interface for coupling the processor to a second processor. The processor also has a port that is coupleable to control a tuner, a demodulator and a DOCSIS module with or without DSG support. The tuner has an output coupled to the demodulator input, and the demodulator has an output to the DOCSIS module input. The demodulator's output is also coupled to a conditional access module controlled by the second processor. The processor issues commands via the port to control at least one of the tuner and the demodulator based on instructions received via the interface from the second processor.

Abstract translation: 用于有线电视机顶盒的处理器具有用于将处理器耦合到第二处理器的接口。 处理器还具有一个端口，用于控制调谐器，解调器和具有或不具有DSG支持的DOCSIS模块。 调谐器具有耦合到解调器输入的输出，并且解调器具有到DOCSIS模块输入的输出。 解调器的输出还耦合到由第二处理器控制的条件访问模块。 处理器通过端口发出命令以基于经由来自第二处理器的接口接收的指令来控制调谐器和解调器中的至少一个。

公开(公告)号：US09338522B2

公开(公告)日：2016-05-10

申请号：US13715395

申请日：2012-12-14

Applicant: Broadcom Corporation

Inventor： Narayan Rajgopal ,  Marcus C. Kellerman ,  David Erickson

IPC: H04N7/16 ,  H04N21/835 ,  H04N21/443

CPC classification number: H04N21/835 ,  H04N21/443 ,  H04N21/4437

Abstract: A set top box or like device incorporating an untrusted software framework as a client of a secure operating system kernel. The software framework may comprise, for example, an Android framework supported by an underlying Linux operating system environment having a secure kernel. The software framework can be executed using a variety of process isolation techniques depending on performance and isolation requirements. A secure access client/server interface may also be provided to support interactions between the untrusted software framework (and applications utilizing the untrusted software framework) and secure or trusted portions of the device. The secure access interface can be configured to perform operations such as handle validation, heap pointer validation, non-pointer parameter validation, heap isolation, and resource release relating to terminated processes. In further embodiments, a software framework aggregator is used to support a plurality of additional software frameworks for use in the set top box.

Abstract translation: 一个机顶盒或类似的设备，其中包含不可信任的软件框架作为安全操作系统内核的客户端。 软件框架可以包括例如由具有安全内核的底层Linux操作系统环境支持的Android框架。 根据性能和隔离要求，可以使用各种过程隔离技术执行软件框架。 还可以提供安全访问客户端/服务器接口以支持不受信任的软件框架（以及利用不受信任的软件框架的应用）与设备的安全或受信任部分之间的交互。 可以将安全访问接口配置为执行诸如句柄验证，堆指针验证，非指针参数验证，堆隔离以及与终止的进程相关的资源释放等操作。 在另外的实施例中，软件框架聚合器用于支持用于机顶盒中的多个附加软件框架。

公开(公告)号：US20150373400A1

公开(公告)日：2015-12-24

申请号：US14841326

申请日：2015-08-31

Applicant: Broadcom Corporation

Inventor： Alex Pelts ,  Jeffrey Fisher ,  David Erickson ,  Jong-Hon Theodore Na

IPC: H04N21/438 ,  H04N21/426 ,  H04N21/44 ,  H04N21/43

CPC classification number: H04N21/4384 ,  H04N7/52 ,  H04N21/42615 ,  H04N21/4263 ,  H04N21/4302 ,  H04N21/44004

Abstract: A video stream demultiplxer receives video streams comprising a selected current content channel and one or more adjacent content channels. Time stamp management is concurrently performed on the adjacent content channels while decoding the selected current content channel. Timing information such as Decoding Time Stamp (DTS) and Presentation Time Stamp (PTS) values, and/or random access points (RAPs) may be determined for pictures stored for the selected current content channel and the adjacent content channels. The determined timing information is utilized to determine a Program Clock Reference (PCR) value for each of the selected current channel and the adjacent channels for channel monitoring. A timebase, derived from a PCR rate that is determined based on the determined PCR value, is determined for decoding the selected current content channel. An adjacent content channel, which is primed during decoding of the selected current content channel, may be directly decoded for display if selected.

Abstract translation: 视频流分解器接收包括所选择的当前内容频道和一个或多个相邻内容频道的视频流。 在对所选择的当前内容信道进行解码的同时，在相邻内容信道上同时执行时间戳管理。 可以为针对所选择的当前内容频道和相邻内容频道存储的图片确定诸如解码时间戳（DTS）和显示时间戳（PTS）值和/或随机接入点（RAP）的定时信息。 确定的定时信息用于确定用于信道监视的所选择的当前信道和相邻信道中的每一个的节目时钟参考（PCR）值。 确定从基于所确定的PCR值确定的PCR速率导出的时基，用于对所选择的当前内容信道进行解码。 在所选择的当前内容信道的解码期间被引用的相邻内容信道可以被直接解码以供显示，如果选择的话。

公开(公告)号：US20140165123A1

公开(公告)日：2014-06-12

申请号：US14181889

申请日：2014-02-17

Applicant: Broadcom Corporation

Inventor： Marcus Kellerman ,  Xuemin Chen ,  Vladimir Silyaev ,  David Erickson

IPC: H04N21/4782

CPC classification number: H04N21/4782 ,  G06F16/958 ,  H04N21/26208 ,  H04N21/4786 ,  H04N21/6125

Abstract: A server may be used to handle at least some of processing of content retrieved via and/or derived from Internet access operations of a plurality of set-top boxes (STBs). Resource allocation and/or utilization, and/or tasks or applications performed in the server during the processing may be configured based on control data, which may be determined by the server and which may comprise capabilities of links between the server and each of the plurality of STBs, requirements of the tasks, characteristics of the content and/or the Internet access operations, user preferences and/or interactions, and/or content provider preferences. The server may dynamically reconfigure the tasks and/or resources based on monitoring of its operations and/or changes of the control data. Configuring tasks and/or resources may comprise time slicing access to resources that are commonly used during concurrent servicing of at least some of the plurality of STBs by the support server.

Abstract translation: 可以使用服务器来处理通过多个机顶盒（STB）的因特网接入操作经由和/或导出的内容的至少一些处理。 在处理期间在服务器中执行的资源分配和/或利用和/或任务或应用可以基于控制数据来配置，所述控制数据可以由服务器确定，并且哪些可以包括服务器与多个 的STB，任务的要求，内容的特征和/或因特网访问操作，用户偏好和/或交互，和/或内容提供商偏好。 服务器可以基于对其操作的监视和/或控制数据的改变来动态地重新配置任务和/或资源。 配置任务和/或资源可以包括对由支持服务器对多个STB中的至少一些的并发服务期间通常使用的资源的时间分片访问。