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公开(公告)号:US20240314408A1
公开(公告)日:2024-09-19
申请号:US18575222
申请日:2022-06-24
Applicant: CANON KABUSHIKI KAISHA
Inventor: FRÉDÉRIC MAZE , FRANCK DENOUAL , Jean LE FEUVRE
IPC: H04N21/84 , H04N21/854
CPC classification number: H04N21/84 , H04N21/85406
Abstract: A method for encapsulating media data, the method comprising: identifying, according to a parameter independent from the encapsulation, a portion of the media data or a set of items of information related to a portion of the media data, and encapsulating the portion of media data or the set of items of information as entities in a media file, the entities being grouped into a set of entities associated with a first indication representative of the parameter, wherein the media file comprises a second indication signalling to a client that the set of entities is to be parsed only if the client has knowledge about the first indication.
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2.
公开(公告)号:US20180249192A1
公开(公告)日:2018-08-30
申请号:US15906927
申请日:2018-02-27
Applicant: CANON KABUSHIKI KAISHA
Inventor: FRANCK DENOUAL , FRÉDÉRIC MAZE , JEAN LE FEUVRE , CYRIL CONCOLATO
IPC: H04N21/2343 , H04N21/4402 , H04L29/06 , H04N21/4728 , H04N21/854
Abstract: The invention relates to encapsulating scalable tiled timed media data comprising timed samples in a server and providing a timed media data bit-stream from encapsulated scalable tiled timed media in a client device. Each timed sample comprises a first layer and at least one second layer and at least one of the layers comprises a plurality of subsamples represented by one or more coding units. After having obtained at least one subsample from amongst the plurality of subsamples of one of the timed samples, one track comprising the at least one obtained subsample is created. Next, the created track is independently encapsulated in at least one media segment file, said media segment file comprising mapping metadata for providing information about the at least one obtained subsample relative to the one of the timed samples and the layer it belongs to.
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公开(公告)号:US20170230442A1
公开(公告)日:2017-08-10
申请号:US15279231
申请日:2016-09-28
Applicant: CANON KABUSHIKI KAISHA
Inventor: FRANCK DENOUAL , YOUENN FABLET , HERVÉ RUELLAN , FRÉDÉRIC MAZE , NAËL OUEDRAOGO
IPC: H04L29/08 , H04L29/06 , H04L12/911
Abstract: At least one embodiment of a method of transmitting data between a server device and a client device includes receiving, from the client device, an HTTP request to obtain first data, wherein the HTTP request includes first data identifying information allowing identification of the first data on the server device and includes one or more additional header fields, retrieving and sending the first data to the client device, identifying a set of second data that can be pushed to the client device, as a function of a first indication contained within the one or more additional fields, identifying a subset of the set of second data, as a function of a second indication that is not derived from the received HTTP request, and pushing data of the identified subset of second data to the client device.
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公开(公告)号:US20170126527A1
公开(公告)日:2017-05-04
申请号:US15336539
申请日:2016-10-27
Applicant: CANON KABUSHIKI KAISHA
Inventor: NAËL OUEDRAOGO , FRÉDÉRIC MAZE , JONATHAN TAQUET
CPC classification number: H04L43/0864 , H04L43/0829 , H04L43/0876 , H04L43/16 , H04L65/4084 , H04L65/608 , H04L65/80 , H04L67/42
Abstract: A method for estimating network conditions of a multi-path connection between a server and a client that is not aware of multi-path signalling. The server having a plurality of communication interfaces connected to a same communication interface of the client through a respective plurality of paths, the method begins, at the server, by obtaining at least one parameter characterizing the client, determining, based on the at least one obtained parameter, an order for successively considering each path of two or more paths. The method may continue for each path successively considered, sending data over at least the path considered, and receiving, over a reception path, at least one feedback message, in response to the sent data and determining network conditions of the two or more paths, using the received feedback messages.
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5.
公开(公告)号:US20200275143A1
公开(公告)日:2020-08-27
申请号:US16870315
申请日:2020-05-08
Applicant: CANON KABUSHIKI KAISHA
Inventor: FRANCK DENOUAL , FRÉDÉRIC MAZE , JEAN LE FEUVRE , CYRIL CONCOLATO
IPC: H04N21/2343 , H04N21/4402 , H04L29/06
Abstract: Generating a media file, by generating a first data structure assigning a subset of samples of a track to one or more sample groups, each sample of the subset comprising one or more network abstraction layer (NAL) units; generating a second data structure for describing each of the one or more sample groups, the first and second data structures comprising a first grouping type indicating a mapping between NAL units and the one or more sample groups, the second data structure associating a sample group identifier to a NAL unit; generating a third data structure for describing a tile region, the third data structure comprising a second grouping type indicating that the samples of the track comprise one or more tile regions; and, generating a media file including the samples and including a metadata part, the metadata part comprising the first, second and third data structures, and the metadata part comprising a reference grouping type for linking the second and third data structures.
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公开(公告)号:US20170171282A1
公开(公告)日:2017-06-15
申请号:US15323015
申请日:2015-07-01
Applicant: CANON KABUSHIKI KAISHA
Inventor: FRANCK DENOUAL , FRÉDÉRIC MAZE , CYRIL CONCOLATO , JEAN LE FEUVRE
IPC: H04L29/06 , H04N21/84 , H04N21/854 , H04N21/2343 , H04N19/31 , H04N19/46
CPC classification number: H04L65/607 , H04L2212/00 , H04N19/31 , H04N19/46 , H04N21/234327 , H04N21/84 , H04N21/85406
Abstract: The invention relates to a method for encapsulating multi-layer partitioned timed media data in a server, the multi-layer partitioned timed media data comprising timed samples, each timed sample being encoded into a first layer and at least one second layer, at least one timed sample comprising at least one subsample, each subsample being encoded into the first layer or the at least one second layer. The method comprises: obtaining at least one subsample from at least one of the timed samples; creating a track comprising the at least one obtained subsample; and generating a descriptive metadata associated with the created track, the descriptive metadata being organized into one main descriptive box per track, the descriptive information about the organization of the different layers being included into one or more sub-boxes, wherein at most one main descriptive box comprises the one or more sub-boxes.
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公开(公告)号:US20170134829A1
公开(公告)日:2017-05-11
申请号:US15415738
申请日:2017-01-25
Applicant: CANON KABUSHIKI KAISHA
Inventor: FRÉDÉRIC MAZE , HERVÉ LE FLOCH , FRANCK DENOUAL , CYRIL CONCOLATO , JEAN LE FEUVRE
IPC: H04N21/845 , H04N21/854 , H04L29/06 , H04N21/4728
CPC classification number: H04N21/8456 , H04L65/607 , H04L67/02 , H04N21/4728 , H04N21/8451 , H04N21/85406
Abstract: The invention relates to encapsulating tiled timed media data in a server and providing a timed media data bit-stream from encapsulated tiled timed media in a client device. The tiled timed media data comprises timed samples and each timed sample comprises a plurality of spatial subsamples. After having selected at least one spatial subsample from amongst the plurality of spatial subsamples of one of the timed samples, one tile track comprising the selected spatial subsample and one corresponding spatial subsample of each of the other timed samples is created for each selected spatial subsample. One composite track comprising at least one extractor identifying at least one of the created tile tracks is created. Each created track is independently encapsulated in at least one media segment file.
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公开(公告)号:US20170134756A1
公开(公告)日:2017-05-11
申请号:US15128756
申请日:2015-03-24
Applicant: CANON KABUSHIKI KAISHA
Inventor: FRANCK DENOUAL , FRÉDÉRIC MAZE , JEAN LE FEUVRE , CYRIL CONCOLATO
IPC: H04N19/70 , H04N19/46 , H04N21/845 , H04N19/105
CPC classification number: H04N19/70 , H04N19/105 , H04N19/17 , H04N19/172 , H04N19/182 , H04N19/184 , H04N19/46 , H04N21/4728 , H04N21/8146 , H04N21/8455 , H04N21/8456 , H04N21/85406
Abstract: Methods of encapsulating a bitstream include generating reference information to enable image items identifying image portions of a bit-stream to be referenced to corresponding description information. The resulting encapsulated file may also include information identifying a timed portion of the data stream corresponding to a video sequence. Description information may include spatial parameters, such as position and width and height of sub-parts of an overall image, and/or display parameters such as colour display, pixel aspect ratio, and clean aperture parameters.
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9.
公开(公告)号:US20160134519A1
公开(公告)日:2016-05-12
申请号:US14933810
申请日:2015-11-05
Applicant: CANON KABUSHIKI KAISHA
Inventor: NAËL OUEDRAOGO , FRÉDÉRIC MAZE
IPC: H04L12/707 , H04L29/06
CPC classification number: H04L45/24 , H04L45/124 , H04L65/608
Abstract: A method of managing feedback messages in a multipath communication network, the method comprising selecting at least one communication path out of a set of communication paths between a first communication device and a second communication device in order to transmit at least one feedback message from the first communication device to the second communication device. The selecting is based on a correlation between at least one transmission condition on said at least one communication path and at least one transmission constraint for said at least one feedback message.Embodiments make it possible to provide optimal transmission of feedback messages in a multipath context.
Abstract translation: 一种在多路径通信网络中管理反馈消息的方法,所述方法包括从第一通信设备和第二通信设备之间的一组通信路径中选择至少一个通信路径,以便从第一通信设备和第二通信设备发送至少一个反馈消息 通信设备到第二通信设备。 所述选择基于所述至少一个通信路径上的至少一个传输条件与所述至少一个反馈消息的至少一个传输约束之间的相关性。 实施例使得可以在多径上下文中提供反馈消息的最佳传输。
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10.
公开(公告)号:US20150365687A1
公开(公告)日:2015-12-17
申请号:US14761575
申请日:2014-01-15
Applicant: CANON KABUSHIKI KAISHA
Inventor: HERVÉ LE FLOCH , FRÉDÉRIC MAZE , FRANCK DENOUAL
IPC: H04N19/33 , H04N19/17 , H04N19/184
CPC classification number: H04N19/33 , H04N19/162 , H04N19/17 , H04N19/184 , H04N19/36 , H04N21/234327 , H04N21/234345 , H04N21/234363 , H04N21/4728 , H04N21/85406
Abstract: A method of processing video data comprising subdividing a video stream into image portions, encoding the image portions with high resolution in respective encoded video streams and reassembling a selection of encoded video streams in order to display a region of interest with high resolution. Embodiments of the invention provide high resolution display of specific region of interest without a priori knowledge of the position of the region of interest.
Abstract translation: 一种处理视频数据的方法,包括将视频流细分为图像部分,在相应编码视频流中以高分辨率对图像部分进行编码,并重新组合编码视频流的选择,以便以高分辨率显示感兴趣的区域。 本发明的实施例提供了特定感兴趣区域的高分辨率显示,而没有对感兴趣区域的位置的先验知识。
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