公开(公告)号：US6065123A

公开(公告)日：2000-05-16

申请号：US978545

申请日：1997-11-26

申请人： Stephen T. Chou ,  Russell J. Fenger ,  Mohan J. Kumar ,  Victor B. Lortz ,  Benjamin L. Manny ,  Mil Travnicek ,  Chih-Kan Wang

发明人： Stephen T. Chou ,  Russell J. Fenger ,  Mohan J. Kumar ,  Victor B. Lortz ,  Benjamin L. Manny ,  Mil Travnicek ,  Chih-Kan Wang

IPC分类号： G06F1/32 ,  G06F11/14 ,  G06F9/00

CPC分类号： G06F1/3265 ,  G06F1/3203 ,  G06F1/3209 ,  G06F11/1441 ,  Y02B60/1242

摘要： A computer system with unattended on-demand availability includes power-saving features which place the system into a Standby mode whenever the system is idle or is not being used. Prior to entering Standby mode, the system sets a hardware timer which indicates when the next scheduled event in the system should be performed. When either the timer expires or another event occurs which requires system operation, the system resumes to the On power state without user intervention. In one embodiment, the system of the present invention allows applications to periodically save their operational states. By saving their operational states, applications are able to guard against power failures and crashes. If a power failure or crash occurs, the system consults restart policies and, if appropriate, automatically re-starts applications to their most recently saved operational states once power is re-stored.

摘要翻译： 具有无人值守按需可用性的计算机系统包括省电功能，当系统空闲或未使用时，系统进入待机模式。 在进入待机模式之前，系统设置一个硬件定时器，指示系统中下次调度的事件何时执行。 当定时器超时或需要系统操作的另一个事件时，系统将恢复到On电源状态，无需用户干预。 在一个实施例中，本发明的系统允许应用程序周期性地保存其操作状态。 通过保存操作状态，应用程序能够防止电源故障和崩溃。 如果发生电源故障或发生故障，系统将重新启动策略，并在适当的情况下自动将应用程序重新启动到其最近保存的操作状态，一旦重新存储电源。

公开(公告)号：US5832283A

公开(公告)日：1998-11-03

申请号：US823719

申请日：1997-03-25

申请人： Stephen T. Chou ,  Russell J. Fenger ,  Mohan J. Kumar ,  Victor B. Lortz ,  Benjamin L. Manny ,  Mil Travnicek ,  Chih-Kan Wang

发明人： Stephen T. Chou ,  Russell J. Fenger ,  Mohan J. Kumar ,  Victor B. Lortz ,  Benjamin L. Manny ,  Mil Travnicek ,  Chih-Kan Wang

IPC分类号： G06F1/32 ,  G06F11/14 ,  G06F13/00

CPC分类号： G06F1/3265 ,  G06F1/3203 ,  G06F1/3209 ,  G06F11/1441 ,  Y02B60/1242

摘要： A computer system with unattended on-demand availability includes power-saving features which place the system into a Standby mode whenever the system is idle or is not being used. Prior to entering Standby mode, the system sets a hardware timer which indicates when the next scheduled event in the system should be performed. When either the timer expires or another event occurs which requires system operation, the system resumes to the On power state without user intervention. In one embodiment, the system of the present invention allows applications to periodically save their operational states. By saving their operational states, applications are able to guard against power failures and crashes. If a power failure or crash occurs, the system consults restart policies and, if appropriate, automatically re-starts applications to their most recently saved operational states once power is re-stored.

摘要翻译： 具有无人值守按需可用性的计算机系统包括省电功能，当系统空闲或未使用时，系统进入待机模式。 在进入待机模式之前，系统设置一个硬件定时器，指示系统中下次调度的事件何时执行。 当定时器超时或需要系统操作的另一个事件时，系统将恢复到On电源状态，无需用户干预。 在一个实施例中，本发明的系统允许应用程序周期性地保存其操作状态。 通过保存操作状态，应用程序能够防止电源故障和崩溃。 如果发生电源故障或发生故障，系统将重新启动策略，并在适当的情况下自动将应用程序重新启动到其最近保存的操作状态，一旦重新存储电源。

公开(公告)号：US5902352A

公开(公告)日：1999-05-11

申请号：US909384

申请日：1997-08-11

申请人： Stephen T. Chou ,  Russell J. Fenger ,  Mohan J. Kumar ,  Victor B. Lortz ,  Mil Travnicek ,  Chih-Kan Wang

发明人： Stephen T. Chou ,  Russell J. Fenger ,  Mohan J. Kumar ,  Victor B. Lortz ,  Mil Travnicek ,  Chih-Kan Wang

IPC分类号： G06F9/48 ,  G06F9/00

CPC分类号： G06F9/4881

摘要： A method and apparatus for task scheduling across multiple execution sessions allows each scheduled task to be scheduled to occur at a specific time(s), to occur periodically, or to occur in response to certain system events. A task can be scheduled which requires execution of an application even if the application is not running at the scheduled time or event, and even if the system is in a low-power standby mode at the scheduled time or event. In one embodiment, the present invention keeps track of specific time events by setting a timer(s) which indicates the time which should elapse until a scheduled event is to occur. When a timer expires, the system determines which task is scheduled to occur at the time the timer expires and executes that task. In one embodiment, the present invention checks a scheduling database to determine which task is scheduled to occur when a timer expires.

摘要翻译： 用于跨越多个执行会话的任务调度的方法和装置允许调度每个调度的任务在特定时间发生，周期性地发生，或者响应于某些系统事件而发生。 即使应用程序未在预定的时间或事件中运行，并且即使系统在预定时间或事件中处于低功耗待机模式，也可以调度任务，该任务需要执行应用程序。 在一个实施例中，本发明通过设置指示应该经过的时间的定时器来跟踪特定的时间事件，直到发生调度的事件。 当定时器到期时，系统确定在定时器到期时调度哪个任务发生，并执行该任务。 在一个实施例中，本发明检查调度数据库以确定当定时器到期时调度哪个任务发生。

公开(公告)号：US20060095532A1

公开(公告)日：2006-05-04

申请号：US11285048

申请日：2005-11-22

申请人： Bret O'Rourke ,  Dawson Dean ,  Chih-Kan Wang ,  Mark Van Antwerp ,  David Roth ,  Chadd Knowlton

发明人： Bret O'Rourke ,  Dawson Dean ,  Chih-Kan Wang ,  Mark Van Antwerp ,  David Roth ,  Chadd Knowlton

IPC分类号： G06F15/167

CPC分类号： H04L29/06 ,  H04L67/2852 ,  H04L69/329

摘要： A cache server includes a media serving engine that is capable of distributing media content. A cache engine is coupled to the media serving engine and capable of caching media content. A set of cache policies is accessible by the cache engine to define the operation of the cache engine. The cache server can be configured to operate as either a cache server or an origin server. The cache server also includes a data communication interface coupled to the cache engine and the media serving engine to allow the cache engine to receive media content across a network and to allow the media serving engine to distribute media content across the network. The cache policies include policies for distributing media content from the media server, policies for handling cache misses, and policies for prefetching media content.

公开(公告)号：US07912921B2

公开(公告)日：2011-03-22

申请号：US11285048

申请日：2005-11-22

申请人： Bret P. O'Rourke ,  Dawson F. Dean ,  Chih-Kan Wang ,  Mark D. Van Antwerp ,  David J. Roth ,  Chadd B. Knowlton

发明人： Bret P. O'Rourke ,  Dawson F. Dean ,  Chih-Kan Wang ,  Mark D. Van Antwerp ,  David J. Roth ,  Chadd B. Knowlton

IPC分类号： G06F15/16 ,  G06F15/177

CPC分类号： H04L29/06 ,  H04L67/2852 ,  H04L69/329

摘要： A cache server includes a media serving engine that is capable of distributing media content. A cache engine is coupled to the media serving engine and capable of caching media content. A set of cache policies is accessible by the cache engine to define the operation of the cache engine. The cache server can be configured to operate as either a cache server or an origin server. The cache server also includes a data communication interface coupled to the cache engine and the media serving engine to allow the cache engine to receive media content across a network and to allow the media serving engine to distribute media content across the network. The cache policies include policies for distributing media content from the media server, policies for handling cache misses, and policies for prefetching media content.

摘要翻译： 缓存服务器包括能够分发媒体内容的媒体服务引擎。 缓存引擎耦合到媒体服务引擎并且能够缓存媒体内容。 缓存引擎可以访问一组缓存策略，以定义缓存引擎的操作。 缓存服务器可以配置为作为缓存服务器或源服务器。 高速缓存服务器还包括耦合到高速缓存引擎和媒体服务引擎的数据通信接口，以允许高速缓存引擎通过网络接收媒体内容，并允许媒体服务引擎跨网络分发媒体内容。 缓存策略包括用于从媒体服务器分发媒体内容的策略，用于处理高速缓存未命中的策略以及用于预取媒体内容的策略。

公开(公告)号：US06986018B2

公开(公告)日：2006-01-10

申请号：US09893373

申请日：2001-06-26

申请人： Bret P. O'Rourke ,  Dawson F. Dean ,  Chih-Kan Wang ,  Mark D. Van Antwerp ,  David J. Roth ,  Chadd B. Knowlton

发明人： Bret P. O'Rourke ,  Dawson F. Dean ,  Chih-Kan Wang ,  Mark D. Van Antwerp ,  David J. Roth ,  Chadd B. Knowlton

IPC分类号： G06F12/00

CPC分类号： H04L29/06 ,  H04L67/2852 ,  H04L69/329

摘要： A cache server includes a media serving engine that is capable of distributing media content. A cache engine is coupled to the media serving engine and capable of caching media content. A set of cache policies is accessible by the cache engine to define the operation of the cache engine. The cache server can be configured to operate as either a cache server or an origin server. The cache server also includes a data communication interface coupled to the cache engine and the media serving engine to allow the cache engine to receive media content across a network and to allow the media serving engine to distribute media content across the network. The cache policies include policies for distributing media content from the media server, policies for handling cache misses, and policies for prefetching media content.