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41. 发明授权

US11119719B2 Screen sharing for display in VR 有权
公开(公告)号：US11119719B2
公开(公告)日：2021-09-14
申请号：US16624255
申请日：2018-06-29
申请人： Koninklijke KPN N.V. , Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek TNO
发明人： Martin Prins , Emmanuel Thomas , Hans Maarten Stokking , Hendrikus Nathaniël Hindriks
IPC分类号： G06F3/14 , G06F3/0481 , G06T3/40
摘要： Systems and methods for screen sharing are provided. The screen sharing may comprise providing image data from a sender system to a receiver system. The receiver system may be a Virtual Reality [VR] system configured to render the image data in a virtual environment by projecting the image data onto a virtual canvas. At the sender system, visual content may be identified to share with the receiver system. The rendering or display of the virtual environment by the receiver may impose legibility constraints on the visual content. An adjusted version of the visual content may be generated which provides improved legibility when viewed in the virtual environment. The image data representing the adjusted version may then be provided to the receiver system. Accordingly, the legibility of the visual content shared by the sender system may be improved when rendered, displayed and subsequently viewed by a user in the virtual environment.

42. 发明授权

US11109092B2 Synchronizing processing between streams 有权
公开(公告)号：US11109092B2
公开(公告)日：2021-08-31
申请号：US16470518
申请日：2017-12-18
申请人： Koninklijke KPN N.V.
发明人： Hans Maarten Stokking , Omar Aziz Niamut
IPC分类号： H04N21/43 , H04N21/2343 , H04N21/647 , H04N21/845 , H04N21/6587 , H04N21/218 , H04N21/438
摘要： A client device is facilitated to synchronize streaming and processing a second stream to streaming and processing a first stream. Both streams may share a common content timeline. The second stream may be buffered in a data storage. A request for streaming a content part of the second stream may be received. The request may be indicative of a selected time point on the common content timeline from which point onwards the second stream is to be processed. The second stream may then be transcoded to obtain a transcoded second stream. The transcoding may create a random access point in the transcoded second stream from which point onwards the client device is able to decode the transcoded second stream, wherein the random access point is nearer in time to the selected time point than any random access point of the second stream. The transcoded second stream may then be streamed to the client device instead of the non-transcoded second stream, thereby providing the client device with direct access to a part, such as a frame, of said second stream.

43. 发明申请

US20210209855A1 Adapting Acoustic Rendering to Image-Based Object 有权
公开(公告)号：US20210209855A1
公开(公告)日：2021-07-08
申请号：US17057434
申请日：2019-05-23
申请人： Koninklijke KPN N.V. , Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek TNO
发明人： Hans Maarten Stokking , Hendrikus Nathaniël Hindriks
IPC分类号： G06T19/00 , G06T7/50 , G06T7/70 , H04S7/00
摘要： A method and processor system are provided for adapting an acoustic rendering of an audio source to a visual rendering of an image-based object. Such visual rendering may be in virtual-reality (VR) or in augmented-reality (AR). The image-based object may be modelled, and an audio object representing the modelled object may be established in an acoustic scene containing the audio source and being associated with the visual rendering. The audio object may be assigned a reverberant and/or absorbent property, and the acoustic rendering may be adapted to the audio object. This way, the acoustic rendering may be adapted to image-based objects, and a user may perceive the acoustic rendering as better matching the visual rendering.

44. 发明申请

US20190310472A1 STREAMING VIRTUAL REALITY VIDEO 审中-公开
公开(公告)号：US20190310472A1
公开(公告)日：2019-10-10
申请号：US16345544
申请日：2017-11-03
申请人： Koninklijke KPN N.V. , Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek TNO
发明人： Gerrit Schilt , Hans Maarten Stokking , Anne-Marie Brouwer , Jasper Sebastiaan Van Der Waa , Maarten Andreas Hogervorst
IPC分类号： G02B27/00 , G06F3/01 , H04N21/2343 , H04N19/597 , H04N21/2665 , H04N21/2662
摘要： Methods and devices are provided for use in a streaming process (130) of a Virtual Reality [VR] video to a VR rendering device (120). The streaming process has a configurable setup, each configured setup providing respective different image data of a scene. The VR rendering device is arranged to render a current view of the scene based on a current head position. The streaming process is executed according to a first configured setup providing first image data needed to render the current view. EEG data is determined by measuring brain signals (115) and a head movement is predicted based on the EEG data. Target image data is determined as needed for rendering a future view based on the predicted head movement. A new configured setup for providing the target image data is determined. By adapting the streaming process based on the prediction the target image data can be provided in time and efficiently using available bandwidth.

45. 发明申请

US20190172252A1 Selecting an Omnidirectional Image for Display 审中-公开
公开(公告)号：US20190172252A1
公开(公告)日：2019-06-06
申请号：US16204024
申请日：2018-11-29
申请人： Koninklijke KPN N.V. , Nederlandse Organisatie voor Toegepast-Natuurwetenschappelijk Onderzoek TNO
发明人： Hans Maarten Stokking , Simon Norbert Bernhard Gunkel , Martin Prins , Hendrikus Nathaniel Hindriks
IPC分类号： G06T15/20 , G06T3/40
摘要： Some embodiments involve obtaining access to a number of omnidirectional images which each represent a different viewpoint relative to the scene, and to metadata which is indicative of a physical relation between the respective viewpoint and a physical object present in the scene. Viewer data may be obtained which is indicative of a current physical relation between a viewpoint of the user and a same type of physical object in a current viewing environment of the user. An omnidirectional image may then be selected for display by comparing the viewer data to the metadata of the omnidirectional images.In other embodiments, an omnidirectional image may have been selected, e.g., from a number of omnidirectional images or by being the only available image, and the user may be instructed to assume a viewpoint in which the physical relation to the physical object in the user's current viewing environment corresponds to the physical relation as indicated by the selected image's metadata.

46. 发明申请

US20180091860A1 Enhancing A Media Recording Comprising A Camera Recording 审中-公开
公开(公告)号：US20180091860A1
公开(公告)日：2018-03-29
申请号：US15567363
申请日：2016-04-22
申请人： Koninklijke KPN N.V. , Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek TNO
发明人： Hans Maarten Stokking , Martin Prins , Omar Aziz Niamut , Robert Koenen , Emmanuel Thomas
IPC分类号： H04N21/4728 , H04N5/272
CPC分类号： H04N21/4728 , H04N5/272
摘要： A system and method are provided for enhancing a media recording which comprises a camera recording of a scene, with the scene including a screen displaying visual content. In the camera recording, the visual content as displayed on the screen is typically of poor quality. By analysing the camera recording, accessing an original version of the visual content, and replacing, in the camera recording, the visual content displayed on the screen by the original version of the visual content, an enhanced media recording is obtained. Namely, in the enhanced media recording, a ‘digital-to-light-to-digital’ conversion of the visual content is avoided, being at least one reason for the visual content having a poor quality in the camera recording.

47. 发明申请

US20170099515A1 Fingerprint-Based Inter-Destination Media Synchronization 审中-公开
公开(公告)号：US20170099515A1
公开(公告)日：2017-04-06
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 , H04N21/44 , H04N21/6437 , H04N21/439
CPC分类号： H04N21/4307 , H04L29/06517 , H04N21/4394 , H04N21/44008 , 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.

48. 发明申请

US20170063684A1 Multicast Transmission Using Programmable Network 审中-公开
标题翻译：使用可编程网络的组播传输
公开(公告)号：US20170063684A1
公开(公告)日：2017-03-02
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： H04L12/741 , H04L5/00 , H04L29/06
CPC分类号： H04L45/74 , H04L5/0055 , H04L65/4076 , H04L65/605 , H04L65/80 , H04L67/02 , H04L69/16
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.
摘要翻译：提供了一种用于经由网络发送数据的系统和方法。在接收到数据的单播传输的请求之后，系统和方法通过i）根据传输协议来格式化数据来响应该请求，以获得格式化的数据，以及ii）将格式化的数据提供给网络，格式化的数据包括目的地址字段。网络是包括可远程控制的一个或多个转发节点的可编程网络。为了实现格式化数据的多播，控制一个或多个转发节点以i）复制格式化数据以获得复制的格式化数据，以及ii）将复制的格式化数据的目的地地址字段设置为源自进一步请求数据的单播传输。该系统和方法的优点是可以为“现成”单播接收机提供多播。

49. 发明授权

US09553756B2 Fingerprint-based inter-destination media synchronization 有权
标题翻译：基于指纹的目标间媒体同步
公开(公告)号：US09553756B2
公开(公告)日：2017-01-24
申请号：US13905133
申请日：2013-05-30
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： H04L29/06 , H04N21/43 , H04N21/439 , H04N21/44 , H04N21/6437
CPC分类号： H04N21/4307 , H04L29/06517 , H04N21/4394 , H04N21/44008 , 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.
摘要翻译：公开了用于与播出时间线相关联的内容部分的用于第一和第二接收器中的目的地间同步的方法和系统。可以确定包括第一内容部分标识符和相关联的第一时钟时间的第一定时信息，其中第一接收机可以接收包括用于识别第一媒体流中的第一内容部分的第一指纹的第一内容部分标识符。可以确定包括第二内容部分标识符和相关联的第二时钟时间的第二定时信息，其中第二接收机可以基于第一和第二定时信息接收识别第二媒体流中的第二内容部分的第二内容部分标识符。可以计算处理第一和第二媒体流中的内容部分的定时差。基于定时差，可以产生用于所述第一和第二流之间的目的地间同步的同步信息。

50. 发明申请

US20160337222A1 Reliable Network Probing Session 审中-公开
标题翻译：可靠的网络探测会话
公开(公告)号：US20160337222A1
公开(公告)日：2016-11-17
申请号：US15112373
申请日：2015-01-26
申请人： KONINKLIJKE KPN N.V. , NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNO
发明人： Hans Maarten Stokking , Frank Den Hartog
IPC分类号： H04L12/26
CPC分类号： H04L43/0888 , H04L43/0864 , H04L43/0882 , H04L43/12
摘要： A method is described for measuring capacity on a route in a network configured to carry reliable packet traffic, by identifying and matching at least two sets of at least one first and at least one second packets transmitted on the route, the at least one first packet being transmitted in a first direction and the at least one second packet transmitted in a direction in reverse direction to the first, by also registering times for the at least two sets, and by calculating capacity of the route dependent on packet size and registered times for the at least two sets. A network node is also described. The method is advantageous for use in home networks because it uses existing traffic and therefore allows probing past device firewalls and in this instance the network node can be a gateway device, or home gateway.
摘要翻译：描述了一种用于测量被配置为承载可靠分组业务的网络中的路由上的容量的方法，通过识别和匹配在路由上发送的至少两组至少一个第一和至少一个第二分组，所述至少一个第一分组通过还记录至少两个集合的时间，并且通过计算取决于分组大小和登记时间的路由的容量，在第一方向上传送所述至少一个第二分组，在与第一方向相反的方向上发送，至少两套。还描述了网络节点。该方法有利于在家庭网络中使用，因为它使用现有业务，因此允许探测过去的设备防火墙，并且在这种情况下，网络节点可以是网关设备或家庭网关。

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