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    METHODS AND DEVICES FOR ENCODING AND DECODING MESSAGES
    1.
    发明申请
    METHODS AND DEVICES FOR ENCODING AND DECODING MESSAGES 审中-公开
    用于编码和解码消息的方法和设备

    公开(公告)号：US20140355627A1

    公开(公告)日：2014-12-04

    申请号：US14362106

    申请日：2012-11-05

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Romain Bellessort ,  Youenn Fablet ,  Hervé Ruellan

    IPC: H04L29/06

    CPC classification number: H04L69/04 ,  H03M7/3088 ,  H04L67/02 ,  H04L69/22

    Abstract: Methods and devices for encoding or decoding messages, each message including a list of information items. The encoding method comprises determining a first list of indexes associated with information items that are already indexed in a local indexing table and a second list of literal values of other information items not yet indexed in said indexing table; encoding the indexes of the first list; binary compressing at least a serialized binary representation of the literal values of the second list; and concatenating the first list and the second list together to obtain an encoded bitstream of the information items. When the messages are sent over a plurality of connections, a global table is shared between the connections to store the indexed items of information; and a local indexing table for each connection associates indexes with references to an entry of the shared global table.

    Abstract translation: 用于对消息进行编码或解码的方法和装置，每个消息包括信息项列表。 编码方法包括确定与在本地索引表中已被索引的信息项相关联的索引的第一列表和在所述索引表中尚未索引的其他信息项的文字值的第二列表; 编码第一个列表的索引; 二进制压缩第二列表的文字值的至少串行二进制表示; 并且将第一列表和第二列表连接在一起以获得信息项的编码比特流。 当通过多个连接发送消息时，在连接之间共享全局表以存储索引的信息项; 并且每个连接的本地索引表将索引与对共享全局表的条目的引用相关联。

    Communication methods and devices in intelligent transport systems
    2.
    发明授权
    Communication methods and devices in intelligent transport systems 有权

    公开(公告)号：US11575750B2

    公开(公告)日：2023-02-07

    申请号：US16950336

    申请日：2020-11-17

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Eric Nassor ,  Hervé Ruellan ,  Julien Sevin

    IPC: H04L29/08 ,  H04W4/40 ,  H04L67/12

    Abstract: According to some embodiments, there is provided a Collective Perception Message, CPM, characterizing a plurality of Vulnerable Road Users based on a plurality of received VAMs, thereby allowing an ITS station to efficiently aggregate VAM messages from VRUs and retransmit information about the VRUs to other ITS stations. Consequently, the security is improved as some ITS stations may not be able to detect or identify VRU stations by themselves but thanks to the CPM, these stations can still be informed of the VRUs. According to other aspects, congestion is avoided while maintaining safety vis-à-vis VRUs thanks to the use of a different transmission scheme when the VRU is already characterized in a CPM sent to the ITS stations. Also, a receiving station can evaluate whether the content of a CPM can be trusted or not. Safety is thus improved. This is achieved thanks to the CPM that references a certificate.

    Methods and devices for encoding and decoding messages
    3.
    发明授权
    Methods and devices for encoding and decoding messages 有权

    公开(公告)号：US11122150B2

    公开(公告)日：2021-09-14

    申请号：US15855337

    申请日：2017-12-27

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Romain Bellessort ,  Youenn Fablet ,  Hervé Ruellan

    IPC: H04L29/06 ,  H03M7/30 ,  H04L29/08

    Abstract: Methods and devices for encoding or decoding messages, each message including a list of information items. The encoding method comprises determining a first list of indexes associated with information items that are already indexed in a local indexing table and a second list of literal values of other information items not yet indexed in said indexing table; encoding the indexes of the first list; binary compressing at least a serialized binary representation of the literal values of the second list; and concatenating the first list and the second list together to obtain an encoded bitstream of the information items. When the messages are sent over a plurality of connections, a global table is shared between the connections to store the indexed items of information; and a local indexing table for each connection associates indexes with references to an entry of the shared global table.

    Method, system and server device for transmitting a digital resource in a client-server communication system
    5.
    发明授权
    Method, system and server device for transmitting a digital resource in a client-server communication system 有权

    公开(公告)号：US09781222B2

    公开(公告)日：2017-10-03

    申请号：US13794017

    申请日：2013-03-11

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Romain Bellessort ,  Youenn Fablet ,  Hervé Ruellan

    IPC: H04L29/08

    CPC classification number: H04L67/26

    Abstract: The present invention relates to transmitting a digital resource in a client-server communication system. A disclosed method comprises at a main server device: receiving a request for a main resource from a client device; determining at least one missing secondary resource, wherein the at least one missing secondary resource is at least one resource associated with said requested main resource and missing at the main server device; and requesting a secondary server device to push the at least one missing secondary resource to the client device. Thanks to the push initiated by the main server device, the secondary resources required by the main resource become available at the client device before the latter discovers that they are required to exploit or display the main resource.

    Method for processing requests and server device processing requests
    9.
    发明授权
    Method for processing requests and server device processing requests 有权

    公开(公告)号：US10084882B2

    公开(公告)日：2018-09-25

    申请号：US14630468

    申请日：2015-02-24

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Romain Bellessort ,  Hervé Ruellan ,  Youenn Fablet

    IPC: G06F9/50 ,  H04L29/08 ,  H04L12/911

    CPC classification number: H04L67/322 ,  G06F9/50 ,  G06F9/5005 ,  G06F9/5027 ,  G06F9/5038 ,  H04L47/70

    Abstract: The invention relates to a server and a method for processing requests when several requests compete within the same connection having fixed resources. Conventionally, a priority scheme provides priority values for a priority parameter that express priorities relatively to the priorities of other requests, meaning that a relative allocation of resources is obtained for each request. To achieve a better control on the server by the client, the invention provides specific possible values for the priority parameter that correspond to respective processing profiles. Each processing profile represents specific server behavior for resources allocation, by defining a predefined amount of resources. Thus, the client may choose between using the specific possible values to control the exact amount of resources that will be allocated by the server to process some specific requests, and using the other possible values that correspond to a relative allocation of resources as already done in known techniques.

    Methods and network devices for communicating data packets
    10.
    发明授权
    Methods and network devices for communicating data packets 有权

    公开(公告)号：US09338258B2

    公开(公告)日：2016-05-10

    申请号：US13665773

    申请日：2012-10-31

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Romain Bellessort ,  Youenn Fablet ,  Hervé Ruellan

    IPC: H04L29/06 ,  H03M7/30

    CPC classification number: H04L69/04 ,  H03M7/3088 ,  H03M7/6052 ,  H03M7/6058

    Abstract: Methods and network devices for communicating data packets in a set of transmissions between a transmitter and a receiver of a communications network are described. The method includes prior exchanging transmitter-provided packet information and receiver-provided packet information between the transmitter and the receiver, generating an initial compression dictionary before the first transmission, based on the exchanged transmitter-provided packet information and the exchanged receiver-provided packet information. At the transmitter, the method further includes compressing the data packets of the first and subsequent transmissions of the set using the initial compression dictionary, and sending the compressed data packets over the communications network to the receiver. At the receiver, the method further includes receiving compressed data packets from the transmitter via the communications network, and decompressing the compressed data packets received in the first and subsequent transmissions of the set, using the initial compression dictionary. Improved compression of the first transmission is thus obtained.

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