Abstract: A method for performing a rate shaping of multiple data streams which are to be transmitted through a network, said network having the capability to perform a rate shaping using a first rate shaping scheme and at least one other rate shaping scheme other than said first rate shaping scheme, wherein said first rate shaping scheme has a smaller impact on the quality of the data stream than said at least one other rate shaping scheme but requires more computational resources than said at least one other rate shaping scheme, said method comprising: determining based on the resources of the network the maximum number n of data streams for which said first rate shaping scheme can be applied as a rate shaping scheme; selecting n data streams among the multiple data streams which are to be transmitted and performing a transcoding on them to perform a rate shaping; performing a rate shaping for other data streams using a different rate shaping scheme other than said first rate shaping scheme.

Abstract: A method determining the temporal relationship between a first video sequence and a second video sequence, said method comprising: obtaining from said first video sequence a first parameter such that the evolvement of said first parameter over time corresponds to the change of the entropy of said first video sequence over time; obtaining from said second video sequence a second parameter such that the evolvement of said second parameter over time corresponds to the change of the entropy of said second video over time; matching the evolvement of said first parameter over time to the evolvement of said second parameter over time to thereby determine the temporal relationship between the two video sequences.

Abstract: An apparatus for generating a transmit frame from an information signal, the information signal comprising a first information frame and a second information frame, comprises a provider for providing a first reconstruction distortion value indicating a reconstruction distortion when replacing the first information frame by a replacement frame, and for providing a second reconstruction distortion value indicating a reconstruction distortion when replacing the second information frame by a replacement frame, means for introducing either the first information frame or the second information frame into the transmit frame in dependence on the first reconstruction distortion value or in dependence on the second reconstruction value. In accordance with the present invention, a rate-distortion optimized rate reduction can be achieved.

Abstract: An apparatus for controlling an operation of a layered communication system, the layered communication system transmitting information through a communication channel, has a provider for providing a property of the communication channel, an extractor for extracting a first set of parameters of a first communication layer and a second set of parameters of a second communication layer to determine current statuses of the first and second communication layer, a provider for providing a first abstraction model and a second abstraction model, wherein each abstraction model models a characteristic of the first and second communication layers, respectively, a determiner for determining an optimized set of parameters to be used by each of the first and second communication layers based on the first and second abstraction models, the channel property and an optimization goal, a provider for providing the optimized sets of parameters to the first and second communication layers.

Abstract: An apparatus for controlling an operation of a plurality of communication layers in a layered communication system provides a property of the communication channel, and includes a storage element for storing a first plurality of sets of parameters defining operation modes of a first communication layer of the plurality of communication layers and for providing a second plurality of sets of parameters defining operation modes of a second communication layer of the plurality of communication layers, a selector for selecting a first set of parameters from the first plurality of sets of parameters and for selecting a second set of parameters from the second plurality of sets of parameters in dependence-on the channel property and an optimization goal and provides the first set of parameters to the first communication layer and the second set of parameters to the second communication layer.

Abstract: Applying a mechanism of image signal processing and color-space-conversion to convert the captured Green components to be Y, luminance components for only those pixels having raw Green data without interpolation, and to convert the Blue components to be U, chrominance components for only those pixels having raw Blue data, and Red components to be V, chrominance components for only those pixels having raw Red data. These converted YUV components are input to a predetermined video compression codec for reducing the intra- and inter-frame redundant information.

Abstract: An apparatus for determining transmission policies for a plurality of transmissions of different types based on a first transmission data associated to a first transmission being of a first transmission type, and on a second transmission data associated to a second transmission being of a second transmission type is described, comprising means for obtaining a first score within a common range, said first score being based on an evaluation of said first transmission data in a first transmission type specific manner, means for obtaining a second score within the common range, said second score being based on an evaluation of said second transmission data in a second transmission type specific manner, and means for determining, based on said obtained first and second score, for said first and second transmission a respective first and second transmission policy each defining one or more transmission parameters such that a sum of a first and second expected score is maximized.

Abstract: An apparatus for generating a transmit frame from an information signal, the information signal comprising a first information frame and a second information frame, comprises a provider for providing a first reconstruction distortion value indicating a reconstruction distortion when replacing the first information frame by a replacement frame, and for providing a second reconstruction distortion value indicating a reconstruction distortion when replacing the second information frame by a replacement frame, means for introducing either the first information frame or the second information frame into the transmit frame in dependence on the first reconstruction distortion value or in dependence on the second reconstruction value. In accordance with the present invention, a rate-distortion optimized rate reduction can be achieved.

Abstract: An apparatus for controlling an operation of a plurality of communication layers of a layered communication system, the layered communication system transmitting information through a communication channel, has a provider for providing a property of the communication channel, an extractor for extracting a first set of parameters of a first communication layer and a second set of parameters of a second communication layer to determine current statuses of the first and second communication layer, a provider for providing a first abstraction model and a second abstraction model, wherein the first abstraction model models a characteristic of the first communication layer, and wherein the second abstraction model models a characteristic of the second communication layer, a determiner for determining an optimized first set of parameters to be used by the first communication layer and an optimized second set of parameters to be used by the second communication layer based on the first abstraction model, the second a

Abstract: An apparatus for controlling an operation of a plurality of communication layers in a layered communication system has means for providing a property of the communication channel, a storage element for storing a first plurality of sets of parameters defining different operation modes of a first communication layer of the plurality of communication layers and for providing a second plurality of sets of parameters defining different operation modes of a second communication layer of the plurality of communication layers, a selector for selecting a first set of parameters from the first plurality of sets of parameters and for selecting a second set of parameters from the second plurality of sets of parameters in dependence on the channel property and an optimization goal and means for providing the first set of parameters to the first communication layer and the second set of parameters to the second communication layer. Therefore, an efficient exploitation of communication resources can be achieved.

Abstract: This invention provides an efficient method of error tracking which quickly recovers the error packet of data. A side information is sent along with a normal video stream that can be used by an intermediate network node in order to improve the quality of the video transmission. The intermediate node receives the original video stream as well as the side information and uses the side information to reduce the error propagation. The error tracking is signaled from the intermediate node to the mobile phone device and the intermediate network node functions the error correction. The side information can then be used to refresh or update those areas that are affected by error concealment and error propagation.