公开(公告)号：US20100299552A1

公开(公告)日：2010-11-25

申请号：US12781961

申请日：2010-05-18

申请人： John Schlack ,  Richard Conrad Clemson ,  Donald Adrian Dewar, JR.

发明人： John Schlack ,  Richard Conrad Clemson ,  Donald Adrian Dewar, JR.

IPC分类号： G06F11/16 ,  G06F15/16 ,  G06F11/30

CPC分类号： H04L47/10 ,  H04L47/11 ,  H04L47/122 ,  H04L47/18 ,  H04L47/19 ,  H04L47/25 ,  H04L67/14 ,  H04L69/40 ,  H04N21/23805 ,  H04N21/2402 ,  H04N21/2404 ,  H04N21/64769

摘要： A method, apparatus and computer program product for managing content sessions within a network is presented. The systems disclosed herein are able to detect a requirement to modify bandwidth usage within the network either proactively or reactively. In response, example embodiments apply an adaptive bit rate adjustment technique to the content sessions to adjust a data rate associated with each content session according to the requirement to modify bandwidth usage within the network. Example embodiments also then apply a quality of service adjustment technique to the content sessions to adjust a bandwidth allocation assigned between a client and server based upon the adaptive bandwidth adjustment technique. Application of the adaptive bit rate and quality of service adjustment techniques may be policy based. Example embodiments also may monitor a plurality of servers supporting content sessions, detect a failure at a first server and move content sessions to a second server.

摘要翻译： 提出了一种用于管理网络内的内容会话的方法，装置和计算机程序产品。 本文公开的系统能够检测以主动或反应的方式来修改网络内的带宽使用的要求。 作为响应，示例实施例将自适应比特率调整技术应用于内容会话，以根据修改网络内的带宽使用的要求来调整与每个内容会话相关联的数据速率。 然后，示例性实施例将服务质量调整技术应用于内容会话，以基于自适应带宽调整技术来调整在客户端和服务器之间分配的带宽分配。 自适应比特率和服务质量调整技术的应用可能是基于策略的。 示例性实施例还可以监视支持内容会话的多个服务器，检测第一服务器处的故障并将内容会话移动到第二服务器。

公开(公告)号：US20090222872A1

公开(公告)日：2009-09-03

申请号：US12039809

申请日：2008-02-29

申请人： John Schlack

发明人： John Schlack

IPC分类号： H04N7/173

CPC分类号： H04N7/173 ,  H04N21/234309 ,  H04N21/25833 ,  H04N21/25858 ,  H04N21/6405 ,  H04N21/643

摘要： A method, system and devices for delivering a switched digital video (SDV) channel to a network element, such as an end user set-top box, based on the decoding capabilities of the network element. The system determines whether to deliver the SDV channel in a first format, such as MPEG-4, or a second format, such as MPEG-2. When only network elements capable of decoding MPEG-4 content are tuned to the SDV channel, the system can realize bandwidth savings by delivering only the MPEG-4 version of the SDV channel. When legacy network elements capable of decoding only MPEG-2 content tune to a particular SDV channel, the system delivers only the MPEG-2 version of the SDV channel. The methods and devices can be used in headends, including those that deploy switched digital video, and other appropriate locations within the content distribution system, such as within the edge devices in the distribution hub.

摘要翻译： 一种用于基于网络元件的解码能力将交换数字视频（SDV）信道传送到诸如最终用户机顶盒的网络元件的方法，系统和设备。 该系统确定是否以诸如MPEG-4之类的第一格式或诸如MPEG-2的第二格式传送SDV信道。 当只有能够解码MPEG-4内容的网络元件被调谐到SDV信道时，系统才能通过仅提供MPEG-4版本的SDV信道来实现带宽节省。 当能够仅解码MPEG-2内容的传统网络元件调谐到特定的SDV信道时，系统仅传送MPEG-2版本的SDV信道。 方法和设备可用于头端，包括部署切换数字视频的方法和设备以及内容分发系统内的其他适当位置，例如分发集线器中的边缘设备内的方法和设备。

公开(公告)号：US09191322B2

公开(公告)日：2015-11-17

申请号：US12781961

申请日：2010-05-18

申请人： John Schlack ,  Richard Conrad Clemson ,  Donald Adrian Dewar, Jr.

发明人： John Schlack ,  Richard Conrad Clemson ,  Donald Adrian Dewar, Jr.

IPC分类号： H04L12/801 ,  H04L12/803 ,  H04L12/825 ,  H04N21/238 ,  H04N21/24 ,  H04N21/647 ,  H04L29/08 ,  H04L29/14

CPC分类号： H04L47/10 ,  H04L47/11 ,  H04L47/122 ,  H04L47/18 ,  H04L47/19 ,  H04L47/25 ,  H04L67/14 ,  H04L69/40 ,  H04N21/23805 ,  H04N21/2402 ,  H04N21/2404 ,  H04N21/64769

摘要： A method, apparatus and computer program product for managing content sessions within a network is presented. The systems disclosed herein are able to detect a requirement to modify bandwidth usage within the network either proactively or reactively. In response, example embodiments apply an adaptive bit rate adjustment technique to the content sessions to adjust a data rate associated with each content session according to the requirement to modify bandwidth usage within the network. Example embodiments also then apply a quality of service adjustment technique to the content sessions to adjust a bandwidth allocation assigned between a client and server based upon the adaptive bandwidth adjustment technique. Application of the adaptive bit rate and quality of service adjustment techniques may be policy based. Example embodiments also may monitor a plurality of servers supporting content sessions, detect a failure at a first server and move content sessions to a second server.

摘要翻译： 提出了一种用于管理网络内的内容会话的方法，装置和计算机程序产品。 本文公开的系统能够检测以主动或反应的方式来修改网络内的带宽使用的要求。 作为响应，示例实施例将自适应比特率调整技术应用于内容会话，以根据修改网络内的带宽使用的要求来调整与每个内容会话相关联的数据速率。 然后，示例性实施例将服务质量调整技术应用于内容会话，以基于自适应带宽调整技术来调整在客户端和服务器之间分配的带宽分配。 自适应比特率和服务质量调整技术的应用可能是基于策略的。 示例性实施例还可以监视支持内容会话的多个服务器，检测第一服务器处的故障并将内容会话移动到第二服务器。

公开(公告)号：US09143813B2

公开(公告)日：2015-09-22

申请号：US13024849

申请日：2011-02-10

申请人： John Schlack

发明人： John Schlack

IPC分类号： H04N21/2385 ,  H04L12/24 ,  H04L12/911 ,  H04N21/61 ,  H04N21/6408 ,  H04N21/24 ,  H04N21/239 ,  H04N21/472

CPC分类号： H04N21/2385 ,  H04L41/0896 ,  H04L47/72 ,  H04N21/2393 ,  H04N21/2402 ,  H04N21/47202 ,  H04N21/6118 ,  H04N21/6408

摘要： A channel allocation mechanism for manages bandwidth using a channel profile to assure an available channel for supporting the highest expected bandwidth request by leaving a contiguous segment available to support such requests. Configurations discussed further below define a profile for expected media types, and associate each channel with a profile designating the media types assignable on that channel. Each media type includes a service and a bitrate, thus different formats of the same service (such as SD and HD) are distinguished. Each profile specifies a media type, and each channel is associated with one or more profiles. Further, a mapping of channels to associated profiles includes a reserve designation, indicating that other (unreserved) be fully assigned before assigning the reserved channels. The reserved channels provide a contiguous block of bandwidth, so that large bandwidth requests do not encounter assignment failure from a plurality of sparsely allocated channels.

摘要翻译： 一种信道分配机制，用于使用信道简档来管理带宽，以通过留下可用于支持这种请求的连续段来确保用于支持最高预期带宽请求的可用信道。 下面进一步讨论的配置定义了预期介质类型的配置文件，并将每个通道与指定该通道上可分配的介质类型的配置文件相关联。 每个媒体类型包括服务和比特率，因此区分相同服务（例如SD和HD）的不同格式。 每个配置文件指定介质类型，每个通道与一个或多个配置文件相关联。 此外，信道到关联简档的映射包括保留指定，指示在分配保留信道之前完全分配其他（未保留）。 保留的信道提供连续的带宽块，使得大的带宽请求不会从多个稀疏分配的信道中遇到分配失败。

公开(公告)号：US08671436B2

公开(公告)日：2014-03-11

申请号：US12956236

申请日：2010-11-30

申请人： John Schlack

发明人： John Schlack

IPC分类号： H04N7/173 ,  H04H20/28 ,  H04J1/00

CPC分类号： H04N21/44209 ,  H04N21/25808 ,  H04N21/6118 ,  H04N21/6338 ,  H04N21/6405 ,  H04N21/6408 ,  H04N21/6582

摘要： A dynamic service group discovery and mapping approach avoids manual assignment of stream channels for transporting video services to the client devices that provide the video services to an end user. Client devices, such as set-top boxes, receive video services such as video on demand (VOD), switched digital video (SDV), pay-per view (PPV) and other narrowcast types of video for selective transmission. Each client device scans for visible stream channels, and sends a report indicative of visible stream channels to a dynamic mapping server. The dynamic mapping server applies aggregation rules for determining, based on the reported stream channels, which client devices are in the same service group. By receiving reports from each client device, the dynamic mapping server identifies groupings of service groups by combining sets of client devices receiving common channels, and “builds” the service groups as additional reports indicate common stream channels visible to multiple set top boxes.

摘要翻译： 动态服务组发现和映射方法避免手动分配用于将视频服务传送到向最终用户提供视频服务的客户端设备的流信道。 诸如机顶盒的客户端设备接收诸如视频点播（VOD），交换数字视频（SDV），付费观看（PPV）等视频服务的视频服务，以及用于选择性传输的其他窄类型的视频。 每个客户端设备扫描可视流信道，并将指示可视流信道的报告发送到动态映射服务器。 动态映射服务器应用聚合规则，用于根据报告的流信道确定哪个客户端设备在同一服务组中。 通过从每个客户端设备接收报告，动态映射服务器通过组合接收公共信道的客户端设备来识别服务组的分组，并且通过附加报告指示多个机顶盒可见的公共流信道来“构建”服务组。

公开(公告)号：US20110197239A1

公开(公告)日：2011-08-11

申请号：US13024849

申请日：2011-02-10

申请人： John Schlack

发明人： John Schlack

IPC分类号： H04N7/173

CPC分类号： H04N21/2385 ,  H04L41/0896 ,  H04L47/72 ,  H04N21/2393 ,  H04N21/2402 ,  H04N21/47202 ,  H04N21/6118 ,  H04N21/6408

摘要： A channel allocation mechanism for manages bandwidth using a channel profile to assure an available channel for supporting the highest expected bandwidth request by leaving a contiguous segment available to support such requests. Configurations discussed further below define a profile for expected media types, and associate each channel with a profile designating the media types assignable on that channel. Each media type includes a service and a bitrate, thus different formats of the same service (such as SD and HD) are distinguished. Each profile specifies a media type, and each channel is associated with one or more profiles. Further, a mapping of channels to associated profiles includes a reserve designation, indicating that other (unreserved) be fully assigned before assigning the reserved channels. The reserved channels provide a contiguous block of bandwidth, so that large bandwidth requests do not encounter assignment failure from a plurality of sparsely allocated channels.

摘要翻译： 一种信道分配机制，用于使用信道简档来管理带宽，以通过留下可用于支持这种请求的连续段来确保用于支持最高预期带宽请求的可用信道。 下面进一步讨论的配置定义了预期介质类型的配置文件，并将每个通道与指定该通道上可分配的介质类型的配置文件相关联。 每个媒体类型包括服务和比特率，因此区分相同服务（例如SD和HD）的不同格式。 每个配置文件指定介质类型，每个通道与一个或多个配置文件相关联。 此外，信道到关联简档的映射包括保留指定，指示在分配保留信道之前完全分配其他（未保留）。 保留的信道提供连续的带宽块，使得大的带宽请求不会从多个稀疏分配的信道中遇到分配失败。

公开(公告)号：US20090150926A1

公开(公告)日：2009-06-11

申请号：US11951815

申请日：2007-12-06

申请人： John Schlack

发明人： John Schlack

IPC分类号： H04N7/173 ,  H04N7/00

CPC分类号： H04L12/2856 ,  H04L12/185 ,  H04L12/2801 ,  H04L12/2898

摘要： A switched digital video (SDV) system includes an SDV manager for coordinating a SDV session requested by a subscriber terminal and a storage medium on which resides content to be transmitted during the SDV session. The system also includes a plurality of edge devices for receiving a transport stream that includes content provided by the storage medium and transmitting the transport stream over an access network to the subscriber terminal on one of a plurality of SDV channels. The SDV manager is configured to cause different renditions of an SDV program to be provided by the edge devices to subscriber terminals associated with different target groups. The target groups each include a plurality of subscriber terminals that is less than a number of subscriber terminals serviced by a distinct edge device or devices.

摘要翻译： 交换数字视频（SDV）系统包括用于协调由用户终端请求的SDV会话的SDV管理器和驻留在SDV会话期间要发送的内容的存储介质。 该系统还包括多个边缘装置，用于接收传输流，该传输流包括由存储介质提供的内容，并且通过接入网络将传输流传输到多个SDV信道之一上的用户终端。 SDV管理器被配置为使边缘设备向与不同目标组相关联的用户终端提供不同的SDV节目再现。 目标组各自包括小于由不同边缘设备或设备服务的多个用户终端的多个用户终端。

公开(公告)号：US20080271076A1

公开(公告)日：2008-10-30

申请号：US11839997

申请日：2007-08-16

申请人： John Schlack

发明人： John Schlack

IPC分类号： G06F3/00

CPC分类号： H04N21/440281 ,  G06F21/10 ,  G06F2221/0784 ,  G06F2221/2137 ,  G06F2221/2151 ,  H04N21/4147 ,  H04N21/4408 ,  H04N21/4627 ,  H04N21/8456

摘要： A process is provided that may be employed by a set top terminal when a viewer is engaged in a SDV session and is required to switch from one edge device to another. The method begins when a set top terminal receives an SDV program forwarded over an access network by a first digital modulator. The SDV program is received on a first SDV channel associated with the first digital modulator. Next, a request is received to tune to a second SDV channel associated with a second digital modulator to thereby continue receiving the SDV program over the access network. The set top terminal detects an event indicating that a change from the first SDV channel to the second SDV channel will lessen disruption to a viewer of the SDV program. Finally, the set top terminal tunes to the second SDV channel.

摘要翻译： 提供了当观众参与SDV会话并且需要从一个边缘设备切换到另一个边缘设备时可以由机顶终端采用的过程。 该方法开始于机顶终端通过第一数字调制器接收通过接入网转发的SDV节目时。 在与第一数字调制器相关联的第一SDV信道上接收SDV节目。 接下来，接收请求以调谐到与第二数字调制器相关联的第二SDV信道，从而在接入网络上继续接收SDV节目。 机顶终端检测表示从第一SDV信道到第二SDV信道的改变将减轻对SDV节目的观看者的中断的事件。 最后，机顶终端调谐到第二个SDV​​通道。

公开(公告)号：US20050165921A1

公开(公告)日：2005-07-28

申请号：US10821802

申请日：2004-04-09

申请人： Sam Abadir ,  Robert Gaydos ,  Stephen Malaby ,  John Schlack ,  Michael Chen ,  Clifford Lewis

发明人： Sam Abadir ,  Robert Gaydos ,  Stephen Malaby ,  John Schlack ,  Michael Chen ,  Clifford Lewis

IPC分类号： G06F9/50 ,  G06F15/16 ,  G06F15/173 ,  H04L29/06 ,  H04L29/08

CPC分类号： G06F9/505 ,  H04L29/06 ,  H04L67/325 ,  H04L69/329 ,  H04N7/17336 ,  H04N21/2181 ,  H04N21/262 ,  H04N21/26241 ,  H04N21/47202 ,  H04N21/488

摘要： Scheduled data is received and distributed in a system, such as a DSDD system. A schedule director receives a schedule representing inventory of data available from a data source and desired times for distributing the data. The schedule director coordinates with one or more resource managers that maintain information regarding resource utilization in the system. The schedule director negotiates with the resource managers to reserve resources in the system for receiving the scheduled data from the data source, storing the received data, and/or preparing the received data for delivery to a user. Resources are reserved based on the schedule and the resources determined to be available. The resources are reserved to perform at least one task, independent of other resources in the system.

摘要翻译： 计划的数据被接收并分布在诸如DSDD系统的系统中。 计划主管接收表示从数据源可用的数据的库存的调度表以及用于分发数据的期望时间。 调度主任与一个或多个维护系统资源利用相关信息的资源管理器进行协调。 调度指导者与资源管理器协商以在系统中预留资源，用于从数据源接收调度数据，存储所接收的数据，和/或准备所接收的数据以传送给用户。 资源根据计划和确定可用的资源保留。 保留资源以执行至少一个任务，而与系统中的其他资源无关。

公开(公告)号：US08196165B2

公开(公告)日：2012-06-05

申请号：US12110422

申请日：2008-04-28

申请人： John Schlack

发明人： John Schlack

IPC分类号： H04N7/16 ,  H04N7/10 ,  H04N7/025 ,  H04N7/18 ,  H04N7/173

CPC分类号： H04N7/17318 ,  G08B27/008 ,  H04H20/26 ,  H04H20/42 ,  H04H20/59 ,  H04H60/13 ,  H04N21/443 ,  H04N21/4882 ,  H04N21/643 ,  H04N21/6543 ,  H04N21/6587 ,  H04N21/814 ,  H04N21/8146

摘要： A switched digital video (SDV) system includes an SDV manager for coordinating SDV sessions requested by subscriber terminals associated with at least one service group. The SDV system also includes an input for receiving content to be delivered during the SDV sessions and at least one edge device for receiving transport streams that include an SDV program provided by the input and for transmitting each transport stream over an access network to at least one of the subscriber terminals on one of a plurality of SDV channels. In response to receipt of a message from a subscriber terminal in a first service group indicating that an EAS event is occurring, the SDV manager is configured to suspend reclamation of network resources allocated to the first service group which otherwise occurs when subscriber terminals tune off an SDV channel.

摘要翻译： 交换数字视频（SDV）系统包括SDV管理器，用于协调与至少一个服务组相关联的用户终端请求的SDV会话。 SDV系统还包括用于接收在SDV会话期间要传送的内容的输入端和用于接收传输流的至少一个边缘设备，所述边缘设备包括由输入提供的SDV节目并且用于通过接入网络将每个传输流发送到至少一个 的多个SDV信道中的一个上的用户终端。 响应于从第一服务组中的用户终端接收到指示发生EAS事件的消息，SDV管理器被配置为暂停分配给第一服务组的网络资源的回收，否则当用户终端调出 SDV频道