公开(公告)号：US20240323021A1

公开(公告)日：2024-09-26

申请号：US18610630

申请日：2024-03-20

申请人： Koninklijke KPN N.V. ,  Nederlandse Organisatie voor Toegepast-Natuurwetenschappelijk Onderzoek TNO

发明人： Willem Adriaan de Kok ,  Mattijs Oskar van Deventer

IPC分类号： H04L9/32 ,  H04L9/08

CPC分类号： H04L9/3218 ,  H04L9/0866 ,  H04L9/321

摘要： A system (33) of a credential issuer is configured to obtain claim information associated with a credential holder, obtain signing information for an anonymity group (31), create proof for the claim information by signing the claim information with the signing information, create the verifiable credential for the credential holder, and provide the verifiable credential to a system (11) of the credential holder. The credential issuer is a member of the anonymity group, the signing information is unique for the credential issuer, the verifiable credential comprises the claim information and the proof, and the verifiable credential comprises or is associated with verification information which is common to all members of the anonymity group.

公开(公告)号：US10250499B2

公开(公告)日：2019-04-02

申请号：US15245980

申请日：2016-08-24

申请人： Koninklijke KPN N.V. ,  Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO

发明人： Hans Maarten Stokking ,  Adrianus Cornelis Gerardus Holtzer ,  Mattijs Oskar van Deventer

IPC分类号： H04L12/28 ,  H04L12/741 ,  H04L29/06 ,  H04L5/00 ,  H04L29/08

摘要： A system and method are provided for transmitting data via a network. Upon receiving a request for unicast transmission of the data, the system and method respond to the request by i) formatting the data in accordance with a transport protocol to obtain formatted data and ii) providing the formatted data to the network, the formatted data comprising a destination address field. The network is a programmable network comprising one or more forwarding nodes that are remotely controllable. In order to effect a multicasting of the formatted data, the one or more forwarding nodes are controlled to i) replicating the formatted data to obtain replicated formatted data, and ii) setting the destination address field of the replicated formatted data to an address originating from a further request for the unicast transmission of the data. An advantage of the system and method is that multicasting may be provided for ‘off-the-shelf’ unicast receivers.

公开(公告)号：US10034037B2

公开(公告)日：2018-07-24

申请号：US15379397

申请日：2016-12-14

申请人： Koninklijke KPN N.V. ,  Nederlandse Organisatie voor Toegepast-Natuurwetenschappelijk Onderzoek TNO

发明人： Hans Maarten Stokking ,  Ray van Brandenburg ,  Mattijs Oskar van Deventer

IPC分类号： H04N21/43 ,  H04N21/439 ,  H04N21/44 ,  H04N21/6437

摘要： Methods and systems for inter-destination synchronization in first and second receivers for content parts associated with a play-out timeline are disclosed. First timing information comprising first content part identifiers and associated first clock times may be determined, where the first receiver may receive a first content part identifier comprising first fingerprints for identifying a first content part in a first media stream. Second timing information comprising second content part identifiers and associated second clock times may be determined, where the second receiver may receive a second content part identifier identifying a second content part in a second media stream based on the first and second timing information. A timing difference in processing a content part in the first and second media streams may be calculated. Based on the timing difference, synchronization information for inter destination synchronization between said first and second streams may be generated.

公开(公告)号：US10257638B2

公开(公告)日：2019-04-09

申请号：US15717541

申请日：2017-09-27

申请人： Koninklijke KPN N.V.

发明人： Ray van Brandenburg ,  Arjen Timotheus Veenhuizen ,  Mattijs Oskar van Deventer ,  Lucia D'Acunto ,  Emmanuel Didier Rémi Thomas

IPC分类号： H04S7/00 ,  G10L19/008

摘要： Method for processing audio objects by an audio client apparatus is described wherein the method comprises:receiving or determining spatial listener information, the spatial listener information defining including one or more listener positions, orientations and/or foci of one or more listeners in the audio space; the audio client apparatus selecting one or more audio object identifiers from a set of audio object identifiers defined in a manifest file stored in a memory of the audio client apparatus, an audio object identifier defining an audio object being associated with audio object position information for defining one or more positions of the audio object in the audio space; the selecting of the one or more audio object identifiers by said audio client apparatus being based on the spatial listener information and the audio object position information of audio object identifiers in said manifest file; and, the audio client apparatus using said one or more selected audio object identifiers to request transmission of audio data and audio object metadata associated with the one or more audio objects defined by the selected audio object identifiers to said audio client apparatus.

公开(公告)号：US20180124442A1

公开(公告)日：2018-05-03

申请号：US15846891

申请日：2017-12-19

申请人： Koninklijke KPN N.V.

发明人： Mattijs Oskar van Deventer ,  Omar Aziz Niamut ,  Anton Havekes ,  Martin Prins ,  Ray van Brandenburg

IPC分类号： H04N21/2343 ,  H04L29/06 ,  H04N21/4402 ,  H04N21/218 ,  H04N21/4728 ,  H04N21/235 ,  H04L29/08 ,  H04N21/6587

CPC分类号： H04N21/234363 ,  H04L29/06 ,  H04L65/4084 ,  H04L67/18 ,  H04N21/218 ,  H04N21/2356 ,  H04N21/440263 ,  H04N21/4728 ,  H04N21/6587

摘要： Methods and systems are described for processing spatially segmented content originating from a content delivery network. One method comprises a client in a media processing device receiving a spatial manifest information comprising one or more spatial representations of a source stream, each spatial representation identifying one or more spatial segment streams, location information for locating one or more delivery nodes in said content delivery network and, optionally, position information for stitching spatial segment frames in said segment streams into a video frame for display; selecting one or more spatial segment streams and on the basis of said spatial manifest information requesting at least one delivery node in said content delivery network to transmit said one or more selected spatial segment streams to said client; and, receiving said one or more selected spatial segment streams from said at least one delivery node.

公开(公告)号：US20190141373A1

公开(公告)日：2019-05-09

申请号：US16239993

申请日：2019-01-04

申请人： Koninklijke KPN N.V.

发明人： Mattijs Oskar van Deventer ,  Omar Aziz Niamut ,  Anton Havekes ,  Martin Prins ,  Ray van Brandenburg

IPC分类号： H04N21/2343 ,  H04L29/06 ,  H04N21/6587 ,  H04L29/08 ,  H04N21/235 ,  H04N21/4728 ,  H04N21/218 ,  H04N21/4402

摘要： Methods and systems are described for processing spatially segmented content originating from a content delivery network. One method comprises a client in a media processing device receiving a spatial manifest information comprising one or more spatial representations of a source stream, each spatial representation identifying one or more spatial segment streams, location information for locating one or more delivery nodes in said content delivery network and, optionally, position information for stitching spatial segment frames in said segment streams into a video frame for display; selecting one or more spatial segment streams and on the basis of said spatial manifest information requesting at least one delivery node in said content delivery network to transmit said one or more selected spatial segment streams to said client; and, receiving said one or more selected spatial segment streams from said at least one delivery node.