公开(公告)号：US20150131481A1

公开(公告)日：2015-05-14

申请号：US14534101

申请日：2014-11-05

Applicant: CANON KABUSHIKI KAISHA

Inventor： PASCAL LAGRANGE ,  JULIEN SEVIN

IPC: H04W48/16 ,  H04L12/24

CPC classification number: H04L41/12 ,  H04L43/0847 ,  H04W8/005 ,  H04W48/12 ,  H04W84/18

Abstract: 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.

Abstract translation: 提供了一种用于网络中的节点发现的方法，包括以下步骤：使用至少一个第一无线通信参数来执行第一发现过程，以发现所述网络的至少一个第一节点，使所述至少一个第一无线通信参数， 从而获得与在所述第一发现过程期间发现的至少一组节点的节点的无线通信参数协调的至少一个第二无线通信参数，以及执行用于发现所述网络的至少一个第二节点的第二发现过程， 至少一秒钟的无线通信参数。 本发明的实施例在节点发现期间提供更好的协调，从而使节点发现更快地进行并减少了节点之间的干扰。

公开(公告)号：US20140089516A1

公开(公告)日：2014-03-27

申请号：US14030734

申请日：2013-09-18

Applicant: CANON KABUSHIKI KAISHA

Inventor： JULIEN SEVIN ,  PASCAL LAGRANGE

IPC: H04L29/06 ,  H04L1/08

CPC classification number: H04L65/60 ,  H04L1/0067 ,  H04L1/08 ,  H04L1/1887

Abstract: 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.

Abstract translation: 本发明涉及发送未压缩视频流的方法和装置。 特别地，该方法涉及无线传输对带宽减小和分组丢失的适配。 提供了一种用于发送未压缩视频数据的计算机实现方法，其中视频数据包括二进制视频分量，该方法包括从一组视频分量生成多个SB分组，每个SB分组由视频分量的比特组成 根据其意义; 确定用于传输的可用带宽并发送大多数SB分组以适应可用带宽，由最重要的带宽开始，意味着包含视频分量的最高有效位。 因此，根据可用带宽获得最佳质量。

公开(公告)号：US20130258209A1

公开(公告)日：2013-10-03

申请号：US13828749

申请日：2013-03-14

Applicant: CANON KABUSHIKI KAISHA

Inventor： LIONEL TOCZE ,  PIERRE VISA ,  PASCAL LAGRANGE

IPC: H04N9/31

CPC classification number: H04N9/31 ,  G01S1/00 ,  H04N9/12 ,  H04N9/3147 ,  H04W84/20

Abstract: 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.

Abstract translation: 本发明涉及改进包括多个无线视频投影仪的视频投影系统中的设备之间的无线通信路径的配置。 当在管理节点之间需要初始无线电通信建立时，例如， 包括主投影仪的节点和包括从属投影仪的节点，例如在视频投影系统的上电之后，从节点根据扫描序列接收无线电通信装置的建立信息，并通过投影子图像来发送信息 。 子图像有利地包括关于主节点的设置的信息，允许在对应的从节点中接收由主节点发送的无线电信号。