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1. 发明公开

EP1543419A2 METHOD AND SYSTEM FOR ALLOCATING SHARED RESOURCES BETWEEN APPLICATIONS 审中-公开
标题翻译：方法和系统ALLOCATE应用程序之间共享资源
公开(公告)号：EP1543419A2
公开(公告)日：2005-06-22
申请号：EP03797411.0
申请日：2003-08-08
申请人： Koninklijke Philips Electronics N.V.
发明人： HENTSCHEL, Christian , BRIL, Reinder, J.
IPC分类号： G06F9/50
CPC分类号： G06F9/5011 , G06F2209/5021
摘要： On resource limited platforms a set of scalable and non-scalable algorithms may run to enable different applications concurrently, while using all available programmable resources. One of the applications may have the main user attention (user focus), but there is no mechanism to automatically or manually adapt the output quality to the application with user focus. The present invention provides a solution by means of a method and a corresponding system for allocating shared resources between applications with media information on a resource limited platform. The method comprises the steps of identifying an application with a current focus of a user; setting or increasing the output quality of the application with the current focus of the user; and automatically allocating a remaining part of the resources to at least one application without the current focus of the user.

2. 发明公开

EP1410199A2 A METHOD AND A SYSTEM FOR ALLOCATION OF A BUDGET TO A TASK 审中-公开
标题翻译：方法和系统的预算给任务分配
公开(公告)号：EP1410199A2
公开(公告)日：2004-04-21
申请号：EP01982468.9
申请日：2001-11-02
申请人： Koninklijke Philips Electronics N.V.
发明人： BRIL, Reinder, J. , STEFFENS, Elisabeth, F., M. , HENTSCHEL, Christian , GABRANI, Maria , VAN ZON, Cornelis, C., A., M.
IPC分类号： G06F9/46
CPC分类号： G06F9/4881
摘要： In consumer devices, like digital television sets (610) or set-top boxes, there can be a problem with a sudden load increase caused by for example a scene change and user focus. During such a load increase, the quality of service of the application having the user focus will decrease until the device detects the load increase. The device can reallocate resources to the application (608) having the user focus after which the quality of service will increase again towards its previous level. However, the user may have noticed the quality decrease. In order to prevent this noticeable decrease of quality in overload situations, a method an a system (606) is provided that guarantees a worst-case budget to the application having user focus and conditionally guarantees a budget surplus to an application not having the user focus (610). The latter application can then use that budget surplus to operate at a higher quality of service level.

3. 发明公开

EP1402347A2 A METHOD OF AND SYSTEM FOR ASSESSING PROGRESS OF A TASK 审中-公开
标题翻译：方法和系统进行评估正在进行的任务的
公开(公告)号：EP1402347A2
公开(公告)日：2004-03-31
申请号：EP02735709.4
申请日：2002-06-03
申请人： Koninklijke Philips Electronics N.V.
发明人： STEFFENS, Elisabeth, F., M. , BRIL, Reinder, J.
IPC分类号： G06F9/00
CPC分类号： G06F11/3419 , G06F2201/815 , G06F2201/88
摘要： Within the real-time processing domain, processing for example a video frame or audio can be divided into a number of tasks. Tasks receive budget (S102) for the resources it is allowed to use during processing. Since the processing performed by the tasks have timing constraints, a task must be able to determine its progress (S108). To enable a task to determine its progress the task refers to an amount of reference clock cycles it uses from a virtual reference clock and compares this amount to the number of sub-processing steps the task has performed. The virtual reference clock provides a plurality of reference clock cycles, wherein a reference clock cycle of the plurality of reference clock cycles is proportional to a ratio between the plurality of real-time clock cycles and the number of clock cycles comprised within the real-time budget.

4. 发明公开

EP1459549A2 PROCESSING A MEDIA SIGNAL ON A MEDIA SYSTEM 审中-公开
标题翻译：处理媒体信号进行的媒体系统
公开(公告)号：EP1459549A2
公开(公告)日：2004-09-22
申请号：EP02804641.5
申请日：2002-12-06
申请人： Koninklijke Philips Electronics N.V.
发明人： HENTSCHEL, Christian , VAN ZON, Cornelis, C., A., M. , GABRANI, Maria , BRIL, Reinder, J. , STEFFENS, Elisabeth, F., M.
IPC分类号： H04N7/24
CPC分类号： G06F9/5011 , H04N19/156 , H04N19/187 , H04N19/196 , H04N19/37 , H04N19/46 , H04N19/61 , H04N21/4424 , H04N21/443 , H04N21/4621 , H04N21/8166
摘要： A method and a system of adaptive processing of a media signal on a media system. The media system can be VCR, TV, set-top box, storage or a display. The method includes the steps of requesting resources (1001) by an algorithm to provide a plurality of output quality levels, allocating a budget (1002) to the algorithm, determining progress (1003) of the media signal, determining budget used (1004); and setting a quality level for media signal processing based on the progress, the allocated budget and the budget used (1005). The method further includes the steps of storing historical information (1006) about the processing; and further setting the quality level for media signal processing based on the stored historical information (1007). The historical information includes the budget allocated, the determined progress, the budget used, the set and or achieved quality levels. The quality levels are increased or decreased dependent on the ratio of the budget used to the allocated budget.

5. 发明公开

EP1442590A1 A METHOD TO ASSIST IN THE PREDICTABILITY OF OPEN AND FLEXIBLE SYSTEMS USING VIDEO ANALYSIS 审中-公开
标题翻译：为支持可预见性开放和灵活的系统使用视频分析
公开(公告)号：EP1442590A1
公开(公告)日：2004-08-04
申请号：EP02772731.2
申请日：2002-10-10
申请人： Koninklijke Philips Electronics N.V.
发明人： GABRANI, Maria , HENTSCHEL, Christian , STEFFENS, Elisabeth, F., M. , BRIL, Reinder, J.
IPC分类号： H04N5/14
CPC分类号： H04N5/14 , H04N17/004 , H04N19/127 , H04N19/156 , H04N19/184 , H04N19/187 , H04N19/61
摘要： For an open and flexible system that is robust and cost-effective, it is proposed to use scalable video algorithms (106, 109, 110, 112, 113, 114, 306, 308, 406, 408). Scalable video algorithms (106, 109, 110, 112, 113, 114, 306, 308, 406, 408) can dynamically trade resource usage with visual output quality. In such a system both the visual output quality and the resource usage may change at run-time leading to unpredictable behaviour of the system. A novel approach that assists in the predictability of an open and flexible system is proposed. The idea is that by knowing the parameters that influence the output quality and load of some video algorithms (106, 109, 110, 112, 113, 114, 306, 308, 406, 408), by appropriately measuring them and by providing the necessary information (316, 320, 416, 420, 426, 427) to the system control (321, 421), the system control (321, 421) can react sooner and do the appropriate changes (317, 322, 323, 417, 422, 423), leading to a predictable system.

6. 发明公开

EP1683015A2 METHOD AND APPARATUS FOR TASK SCHEDULING BASED ON MEMORY REQUIREMENTS 审中-公开
标题翻译：基于存储需求的方法和设备任务的流量控制
公开(公告)号：EP1683015A2
公开(公告)日：2006-07-26
申请号：EP04725779.5
申请日：2004-04-05
申请人： Koninklijke Philips Electronics N.V.
发明人： BRIL, Reinder, J. , LOWET, Dietwig, J., C.
IPC分类号： G06F9/50 , G06F9/48
CPC分类号： G06F9/4881 , G06F9/5016
摘要： This invention is concerned with apparatus and a method for resource management and is particularly suited to resource management of real-time systems. In particular, the invention is concerned with memory management of applications running on low cost systems where the amount of main memory is limited. The invention provides a method of scheduling a plurality of tasks in a data processing system, each task having suspension data (303) specifying suspension of the task based on memory usage associated therewith, the method including: processing one of the plurality of tasks; monitoring for an input indicative of memory usage of the task matching the suspension data associated with the task; suspending processing of said task on the basis of said monitored input; and processing a different one of the plurality. Thus in the invention, tasks to be executed on such a system are preconfigured with suspension data, otherwise referred to as memory-based preemption points (303b), which specify the amounts of memory required at various points in a task's execution (i.e. at and between preemption points). The data processing system is equipped with corresponding processing means arranged to evaluate whether, on the basis of the task(s) to be processed and the available memory, scheduling of the tasks should be constrained. The invention thus provides a means of preempting task processing based on memory constraints, and as such provides both a new memory management method and a new preemptive criterion.

7. 发明公开

EP1514427A2 PROCESSING A MEDIA SIGNAL IN A MEDIA SYSTEM TO PREVENT OVERLOAD 审中-公开
标题翻译：处理媒体信号进行媒体系统能够避免网络拥塞
公开(公告)号：EP1514427A2
公开(公告)日：2005-03-16
申请号：EP03722980.4
申请日：2003-05-16
申请人： Koninklijke Philips Electronics N.V.
发明人： HENTSCHEL, Christian , GABRANI, Maria , BRIL, Reinder, J. , STEFFENS, Elisabeth, F., M.
IPC分类号： H04N7/50
CPC分类号： H04N21/4424 , H04N21/44008 , H04N21/4621
摘要： This invention relates to processing of a media signal in a media system. The media system can be a PC, a Digital TV, a Settop-Box or a Display. The method includes the steps of: monitoring, by a system control unit, a progress and a resource usage (18) of the processing of the media signal; determining, by a structural load control or indicator unit, a first point in time (1) for a substantial load change (19) of a content; determining, by the system control unit, a second point (2) in time based on the first point; decreasing, by the system control unit, an assigned quality level (13) of at least one scalable algorithm at the second point in time; and adapting, by the system control unit, the assigned quality level of at least one scalable algorithm at or till a third point in time, wherein a realized quality level (17) will become stable within a period of adaptation time. Said substantial load change of content can be caused by a shot or a scene change. The scalable algorithm can be without error propagation. Said second point in time can come before, coincide with or come after the first point in time. The adaptation time can be in the range of fractions of a second. This enables minimization of a time of non-optimal data dependent system behavior, and of its effects on a visual output quality.

8. 发明公开

EP1472885A1 IMAGE PROCESSING METHOD AND SYSTEM TO INCREASE PERCEIVED VISUAL OUTPUT QUALITY IN CASE OF LACK OF IMAGE DATA 审中-公开
标题翻译：用于改善察觉到的图像数据的情况下视觉质量的图像处理方法及系统
公开(公告)号：EP1472885A1
公开(公告)日：2004-11-03
申请号：EP02788383.4
申请日：2002-12-16
申请人： Koninklijke Philips Electronics N.V.
发明人： GABRANI, Maria , HENTSCHEL, Christian , STEFFENS, Elisabeth, F., M. , BRIL, Reinder, J.
IPC分类号： H04N7/50 , H04N5/44
CPC分类号： H04N21/4263 , H04N5/4401 , H04N5/50 , H04N19/132 , H04N19/587 , H04N21/4384
摘要： A digital video processing system is disclosed in which processing modules use less data packets than in the regular situation in which there enough data is received. In case of a channel change, the digital video processing system can, during a time period in which there is a lack of data, produce more images than the prior art systems. These images have lower quality than the ones that result from regular processing, but a person will perceive the image quality to be higher than the one of the prior art.

9. 发明公开

EP1402346A2 METHOD OF AND SYSTEM FOR DETERMINING A BEST-CASE RESPONSE TIME OF A PERIODIC TASK 审中-公开
标题翻译：方法和系统确定周期性任务的最佳情形下的响应时间
公开(公告)号：EP1402346A2
公开(公告)日：2004-03-31
申请号：EP01989435.1
申请日：2001-10-30
申请人： Koninklijke Philips Electronics N.V.
发明人： BRIL, Reinder, J. , STEFFENS, Elisabeth, F., M.
IPC分类号： G06F9/00
CPC分类号： G06F9/4887
摘要： The invention relates to a method of determining a best-case response time of a first periodic task, the method comprising a first step based upon Rate Monotonic Analysis of determining the priorities of the tasks that have to be scheduled on a system. In order to determine whether the set of tasks can be scheduled on the system, the best-case response time in addition to the worst-case response time is determined per task. This best-case response time is substantially equal to the difference between the start of a task with a lower priority (102) and the completion of this low priority task (104), the start being right after the release of the low priority task and the completion coinciding with the simultaneous release (104) all higher priority tasks.

10. 发明公开

EP1683011A2 AN ENHANCED METHOD FOR HANDLING PREEMPTION POINTS 审中-公开
标题翻译：高级工艺处理抢占点
公开(公告)号：EP1683011A2
公开(公告)日：2006-07-26
申请号：EP04770379.8
申请日：2004-11-04
申请人： Koninklijke Philips Electronics N.V.
发明人： BRIL, Reinder, J. , LOWET, Dietwig, J., C.
IPC分类号： G06F9/46
CPC分类号： G06F9/4843
摘要： A method and apparatus is provided for use by a scheduler of a multi-processing data processing system to select task preemption points based on main memory requirements and exclusive resource usage that is cost-effective and that maintains system consistency and, in particular, enables additional preemption strategies in which: matching synchronization primitives do not span a preemption point, i.e., sub job boundary; for a particular resource Rk, all intervals/sub-jobs of all tasks that use this resource (and protect it by using synchronization primitives) are either all preemptible or all non-preemptible- i. in case they are all preemptible the synchronization primitives must be executed, and ii. in case they are all non-preemptible, it is not necessary to execute the synchronization primitives; preemption of a subset of tasks is limited to the preemption points of this subset while allowing arbitrary preemption of all the other tasks; and preemption of a subset of tasks is limited to their preemption points, preemption of the other tasks is limited to a subset of their preemption points, while allowing arbitrary preemption of their remaining intervals. That is, the present invention is a main memory based preemption technique that is not restricted to preemption only at predetermined preemption points and that avoids deadlock due to exclusive use of resources.

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