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Sökning: WFRF:(Persson Fredrik) > Patent

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1.
  • Grönberg, Fredrik, et al. (författare)
  • Image reconstruction based on energy-resolved image data from a photon-counting multi-bin detector
  • 2015
  • Patent (populärvet., debatt m.m.)abstract
    • There is provided a method of image reconstruction based on energy-resolved image data from a photon-counting multi-bin detector or an intermediate storage. The method comprises processing (S1) the energy-resolved image data by performing at least two separate basis decompositions using different number of basis functions for modeling linear attenuation, wherein a first basis decomposition is performed using a first smaller set of basis functions to obtain at least one first basis image representation, and wherein a second basis decomposition is performed using a second larger set of basis functions to obtain at least one second basis image representation. The method also comprises reconstructing a first image based on said at least one first basis image representation obtained from the first basis decomposition, and combining the first image with information representative of said at least one second basis image representation.
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2.
  • Persson, Fredrik, et al. (författare)
  • A QoS parameters translater
  • 2003
  • Patent (populärvet., debatt m.m.)abstract
    • When UMTS is part of IP end-to-end communication, there must exist means for UMTS to be able to provide the required Quality of Service (QoS) for applications running over IP. Hence there is a need for a translation function for translation between IP QoS parameters and UMTS QoS attributes. This translation is not trivial because of several reasons. First, the number of QoS parameters in the IP level and the UMTS level are different. Second, definitions of parameters at the two levels are different. Keeping these factors in view, the present invention provides for a method for translation of IP QoS parameters to UMTS QoS attributes, and another method for translation of UMTS QoS attributes to IP QoS parameters. This translation will enable spectrum efficient UMTS bearers to be set up for applications running over IP. This will also make negotiation of services possible between an entity at the IP level and the UMTS network. These methods are placed in both the User Equipment as well as the Gateway of the UMTS network.
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  • Resultat 1-2 av 2
Typ av publikation
patent  (2)Ta bort avgränsningen
Typ av innehåll
populärvet., debatt m.m. (2)
Författare/redaktör
Fodor, Gábor (1)
Bornefalk, Hans (1)
Persson, Fredrik (1)
Persson, Mats, 1987- (1)
Grönberg, Fredrik (1)
Lärosäte
Kungliga Tekniska Högskolan (2)
Språk
Engelska (2)
Forskningsämne (UKÄ/SCB)
Teknik (2)

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