Abstract:
The access method comprises the following steps: selecting a first data item in a digital document designated by a predetermined identifier, said digital document comprising at least first and second data items linked to each other in a chosen hierarchical relationship; verifying the presence of at least one address of a location containing said second data item of the digital document in storage means of the client device; in the absence of said address in said storage means, seeking said address in the network; in the event of a positive search, storing said address in the storage means of the client device; and subsequently accessing said second data item of the document from the address thus stored by anticipation and thus immediately available locally.
Abstract:
Disclosed is a method of resource reservation in the context of the transmission of a data content on a transmission path between a source device and a sink device belonging to a communications network. Said network comprises plurality of subnets interconnected by at least one interconnection device possessing at least two communications interfaces connected to said subnets.
Abstract:
A method is proposed for transmitting data of a stream to be stimulated, coming from a sender device to a receiver device through a network segment and according to a protocol for packet transportation with acknowledgement. An input device of the network segment performs the following steps for the stream to be stimulated: determining a starting packet associated with a sequence number higher than the sequence numbers of packets in transit via the network segment (packets transmitted but not yet acknowledged positively by the receiver device); selecting, as a function of a consumption of a target bandwidth for the transmission of said stream, of packets of the stream following the starting packet, and for each of which an anticipated positive acknowledgement message must be transmitted; upon reception of a positive message of acknowledgement of the starting packet, launching a temporary phase comprising a step of transmitting to the sender device an anticipated positive acknowledgement message for the starting packet and for each selected packet; discarding the positive acknowledgements received from the receiver device which correspond to the selected packets and for which an anticipated positive acknowledgement message has been transmitted.
Abstract:
The access method comprises the following steps: i) receiving a notification indicating the presence of at least one digital document available on the network, said notification comprising at least one executable command adapted to detect whether the recipient client device comprises a local application capable of processing the digital document, ii) executing the command or commands in order to detect the local application, and iii) in case of positive detection, accessing the digital document from a local server whereas in case of negative detection, accessing the document from the address of a remote server.
Abstract:
This method of distributing a document comprises: a step of receiving a request for obtaining the document; a step of controlling the access rights to the document; the distribution of the document if it is available locally and access thereto is authorized; and the sending of the address of a second system likely to contain this document in the contrary case.
Abstract:
The invention is directed to the optimization of an access to a medium in wireless networks which can be accessed by a plurality of nodes, each node of the plurality of nodes using a medium access mechanism of the Carrier Sense Multiple Access with Collision Avoidance type based on a computation of a backoff value. A specific value is associated with each node of a set of nodes of the plurality of nodes, the specific value of a node being known by the other nodes of the set of nodes. According to the invention, a backoff value is determined for each node of the set of nodes, in each node of the set of nodes, the backoff value associated with a node being determined as a function of the specific value associated with that node.
Abstract:
In a method of controlling a document sharing support apparatus, there is received information representing the fact that a first computer is storing at least a low-resolution version of a document, and the low-resolution version of the document is acquired and stored. There is received a request for obtaining the document from a second computer, and the low-resolution version of the document in memory is made available to the second computer.
Abstract:
The method of asynchronous delivery of digital data according to the invention is implemented in at least one server system and at least one client system connected via a network. According to the method, at the time of a request for data coming from a client system, an item of context information (CINF) representing a first state of the client system on sending out the request is associated with the latter. On delivering to the client system a response, the response incorporates the context information (CINF). The client system is adapted to put itself in a second state analogous to the first state mentioned above, in accordance with the context information (CINF, CUID). The method according to the invention provides context management enabling the user to associate the responses received with requests sometimes made well beforehand.
Abstract:
A data stream is transmitted from a transmitting device to a receiving device via a communication network. Data of the data stream is transmitted to the receiving device by using a transport protocol without data acknowledgement. In a transmission method, parity-encoding parameters for parity encoding a data set of the data stream is determined via the transmitting device. The transmitting device also generates parity data from the data set by using the determined parity-encoding parameters. The transmitting device further transmits the generated parity data to the receiving device via the communication network by using a transport protocol with data acknowledgement.
Abstract:
The invention is directed to the optimization of an access to a medium in wireless networks which can be accessed by a plurality of nodes, each node of the plurality of nodes using a medium access mechanism of the Carrier Sense Multiple Access with Collision Avoidance type based on a computation of a backoff value. A specific value is associated with each node of a set of nodes of the plurality of nodes, the specific value of a node being known by the other nodes of the set of nodes. According to the invention, a backoff value is determined (505, 510) for each node of the set of nodes, in each node of the set of nodes, the backoff value associated with a node being determined as a function of the specific value associated with that node.