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1. 发明授权

US09614883B2 Method and device for transmitting uncompressed video streams 有权
公开(公告)号：US09614883B2
公开(公告)日：2017-04-04
申请号：US14030734
申请日：2013-09-18
申请人： CANON KABUSHIKI KAISHA
发明人： Julien Sevin , Pascal Lagrange
IPC分类号： G06F15/16 , H04L29/06 , H04L1/08 , H04L1/00 , H04L1/18
CPC分类号： H04L65/60 , H04L1/0067 , H04L1/08 , H04L1/1887
摘要： The present invention concerns a method and a device of transmitting uncompressed video streams. In particular, the method concerns the adaptation of a wireless transmission to bandwidth reduction and packet loss.There is provided a computer implemented method for sending uncompressed video data, wherein the video data comprises binary video components, the method comprising generating a plurality of SB packets from a group of video components, each SB packet being constituted by bits of the video components grouped according to their significance; determining available bandwidth for transmission and sending the most SB packets to fit the available bandwidth, beginning by the most significant ones, meaning containing the most significant bits of the video components. Accordingly, the best possible quality is obtained according to the available bandwidth.

2. 发明授权

US10135690B2 Node discovery in a communication network 有权
公开(公告)号：US10135690B2
公开(公告)日：2018-11-20
申请号：US14534101
申请日：2014-11-05
申请人： CANON KABUSHIKI KAISHA
发明人： Pascal Lagrange , Julien Sevin
IPC分类号： H04L12/24 , H04W8/00 , H04L12/26 , H04W48/12
摘要： There is provided methods for node discovery in a network comprising the following steps: performing a first discovery process for discovering at least one first node of said network, using at least one first wireless communication parameter, adapting said at least one first wireless communication parameter, thereby obtaining at least one second wireless communication parameter coordinated with wireless communication parameters of nodes of at least one group of nodes discovered during the first discovery process, and performing a second discovery process for discovering at least one second node of said network, using said at least one second wireless communication parameter. Embodiments of the invention provide better coordination during node discovery thereby making the node discovery is thus made faster and reducing interferences between the nodes.

3. 发明授权

US09071768B2 Method of transmitting video information over a wireless multi-path communication link and corresponding wireless station 有权
标题翻译：通过无线多路径通信链路和相应的无线站传输视频信息的方法
公开(公告)号：US09071768B2
公开(公告)日：2015-06-30
申请号：US13717236
申请日：2012-12-17
申请人： CANON KABUSHIKI KAISHA
发明人： Pascal Lagrange , Julien Sevin
IPC分类号： H04N21/63 , H04N19/00 , H04N19/66
CPC分类号： H04N19/587 , H04N19/66 , H04N21/631
摘要： The present invention a method of transmitting video information over a communication link made of several transmission paths between wireless transmitting and receiving stations. The method comprises, in the wireless transmitting station, obtaining an uncompressed video frame made of an array of pixel blocks, a pixel in the pixel blocks being represented by base pixel information and enhancement pixel information; generating at least one set of complementary pixel blocks from a given pixel block of the obtained uncompressed video frame, by applying different operations to said given pixel block for dropping different enhancement pixel information from that pixel block, so that the complementary pixel blocks comprise different enhancement pixel information and each comprises the base pixel information; and for each set, transmitting the complementary pixel blocks over respective different transmission paths to the wireless receiving station. This provides robustness of video transmission while keeping a high quality of video rendering.
摘要翻译：本发明是一种通过无线发射台和接收台之间的若干传输路径制成的通信链路传输视频信息的方法。该方法包括：在无线发送站中，获取由像素块阵列构成的未压缩视频帧，由基本像素信息和增强像素信息表示像素块中的像素; 通过对所述给定像素块应用不同的操作从所述像素块中丢弃不同的增强像素信息，从所获得的未压缩视频帧的给定像素块中产生至少一组互补像素块，使得所述互补像素块包括不同的增强像素信息，并且每个包括基本像素信息; 并且对于每个集合，将各个不同传输路径上的互补像素块发送到无线接收站。这提供了视频传输的鲁棒性，同时保持高质量的视频呈现。

4. 发明授权

US11509490B2 Pairing of devices in a power network 有权
公开(公告)号：US11509490B2
公开(公告)日：2022-11-22
申请号：US16865103
申请日：2020-05-01
申请人： CANON KABUSHIKI KAISHA
发明人： Pascal Lagrange
IPC分类号： H04L12/10 , H04L5/00 , H04L12/40 , H04W12/50
摘要： There are provided methods for associating an adapter controller with a device, among a plurality of devices, for instance a Power over Ethernet device or its controller, each device of the plurality being connected to a controller interconnected to other controllers by a power-over-data linear bus to which an item of power source equipment is also connected. The methods comprises an exchange of a pairing message comprising a unique identifier of the device to be paired with, wherein only said device from which is the pairing message receives power at the time of receiving the pairing message by the controller among the plurality of devices.

5. 发明申请

US20190199538A1 METHOD AND DEVICE FOR RESETTING AT LEAST ONE PROCESSING DEVICE 审中-公开
公开(公告)号：US20190199538A1
公开(公告)日：2019-06-27
申请号：US16213168
申请日：2018-12-07
申请人： CANON KABUSHIKI KAISHA
发明人： Pascal Lagrange , Hervé Merlet
IPC分类号： H04L12/12 , H04N7/18 , H04N17/00 , H04N5/232
CPC分类号： H04L12/12 , G06F1/24 , H04L12/10 , H04N5/23241 , H04N5/268 , H04N7/181 , H04N17/002
摘要： A method for resetting at least one processing device in a power-over-data linear bus interconnecting a plurality of processing devices, the method including, at a first processing device of said plurality of processing devices: sending a protocol data unit comprising a prior-reset notification to all other processing devices of the plurality of processing devices, and sending a physical reset signal to all other processing devices of the plurality of processing devices, wherein the prior-reset notification is configured to prevent a processing device that receives the physical reset signal from resetting, if the protocol data unit comprising the prior-reset notification has been previously processed by the processing device.

6. 发明授权

US09686516B2 Method and device for improving configuration of communication devices in a video projection system comprising multiple wireless video projectors 有权
公开(公告)号：US09686516B2
公开(公告)日：2017-06-20
申请号：US13828749
申请日：2013-03-14
申请人： CANON KABUSHIKI KAISHA
发明人： Lionel Tocze , Pierre Visa , Pascal Lagrange
IPC分类号： H04N9/31 , H04N9/12 , G01S1/00 , H04W84/20
CPC分类号： H04N9/31 , G01S1/00 , H04N9/12 , H04N9/3147 , H04W84/20
摘要： The present invention relates to improving configuration of wireless communication paths between devices in a video projection system comprising multiple wireless video projectors. When an initial radio communication setup is required between a managing node, e.g. a node comprising a master projector, and a node comprising a slave projector, for example following the powering up of the video projection system, the slave node receives setup information by radio communication means according to a sweeping sequence and transmits information by projecting sub-images. Sub-images advantageously comprise information relative to settings of the master node allowing reception in the corresponding slave node of a radio signal transmitted by the master node.

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