Abstract: A method intended to aid in the reservation of resources within a packet-switched communication network (CR) comprising a number N of relaying nodes (S1-S4). This method consists i), in determining for some at least of the N nodes (S1-S4) at least one resource reservation plan Pik defined by a plan identifier associated with a stream identifier and at least two ports, and ii) in memorizing for each of the N nodes (S1-S4) the various plans Pik relating to them.

Abstract: A method is intended for scheduling reservations of resources in a packet-switched communication network comprising end-nodes (H1-H3) and core network switches (S1-S2). This method comprises the steps of: including a time information to each request, issued by an end-node (H1) and forwarded by at least one core network switch (S1), and requesting a resource reservation for receiving a stream defined by specifications at a time which is represented by this time information, and storing the time information, which is included into each forwarded end-node request in correspondence with the associated stream specifications, into at least one related database managed by a core network switch (S1) which participates to the request forwarding.

Abstract: A method for restoring a service reservation booking system in a network after a failure, that comprises a first step of invalidating at least a portion of the bookings which cannot be seen anymore by the service booking system due to the failure, a second step of recalculating the bookings which cannot be seen anymore by the service booking system by validating the bookings which are valid in the network topology after the failure and by cancelling the bookings which are invalid in the network topology after the failure. Advantageously, the method of the present invention further includes a third step during which the nodes of the network disappear from the service booking system. The present invention also includes to a service booking system in a network.

Abstract: A method intended to aid in the reservation of resources within a packet-switched communication network (CR) comprising a number N of relaying nodes (S1-S4). This method consists i), in determining for some at least of the N nodes (S1-S4) at least one resource reservation plan Pik defined by a plan identifier associated with a stream identifier and at least two ports, and ii) in memorizing for each of the N nodes (S1-S4) the various plans Pik relating to them.

Abstract: A method intended to aid in the reservation of resources within a packet-switched communication network (CR) comprising a number N of relaying nodes (S1-S4). This method consists i), in determining for some at least of the N nodes (S1-S4) at least one resource reservation plan Pik defined by a plan identifier associated with a stream identifier and at least two ports, and ii) in memorizing for each of the N nodes (S1-S4) the various plans Pik relating to them.

Abstract: The described technology relates to cryptographic equipment which includes an input interface, a red module, a cryptographic module, a black module, and an output interface. The cryptographic module includes a cryptographic unit, which interacts with the red module and with the black module, and a management device, which interacts with the input interface and with either the red module or the black module, but not with both simultaneously. The cryptographic unit and the management device are physically and logically separate from one another and independent, and have an identical protection mechanism capable of protecting the integrity of the management device so as to detect any attempt at tampering.

Abstract: A method is intended for scheduling reservations of resources in a packet-switched communication network comprising end-nodes (H1-H3) and core network switches (S1-S2). This method comprises the steps of: including a time information to each request, issued by an end-node (H1) and forwarded by at least one core network switch (S1), and requesting a resource reservation for receiving a stream defined by specifications at a time which is represented by this time information, and storing the time information, which is included into each forwarded end-node request in correspondence with the associated stream specifications, into at least one related database managed by a core network switch (S1) which participates to the request forwarding.

Abstract: A method and apparatus for scheduling reservations of resources in a packet-switched communication network including end-nodes and core network switches are described including a time information to each request, issued by an end-node and forwarded by at least one core network switch, and requesting a resource reservation for receiving a stream defined by specifications at a time which is represented by the time information, the reservation scheduling being handled at a data link layer of an Open Systems Interconnection (OSI) model and storing the time information, included into each forwarded end-node request in correspondence with associated stream specifications, into at least one related database managed by a core network switch participating in the request forwarding.

Abstract: Storage device for stream data such as digital video and for non-stream data such as computer files, comprising a single file system which features a first type of storage unit for storing audio and/or video streams and a second type of storage unit for storing non-stream data, wherein the size of the first storage unit is a multiple of the size of the second storage unit, said device further comprising means for allocating a unit of the first type either for stream storage or to split a unit of the first type into a plurality of units of the second type, for storage of non-stream data. The invention also concerns a method for storing stream data or non-stream data. Applicable in digital television systems.

Abstract: A method intended to aid in the reservation of resources within a packet-switched communication network (CR) comprising a number N of relaying nodes (S1-S4). This method consists i), in determining for some at least of the N nodes (S1-S4) at least one resource reservation plan Pik defined by a plan identifier associated with a stream identifier and at least two ports, and ii) in memorizing for each of the N nodes (S1-S4) the various plans Pik relating to them.

Abstract: A method intended to aid in the reservation of resources within a packet-switched communication network comprising a number N of relaying nodes. This method consists i), in determining for some at least of the N nodes at least one resource reservation plan Pik defined by a plan identifier associated with a stream identifier and at least two ports, and ii) in memorizing for each of the N nodes the various plans Pik relating to them.

Abstract: The present invention relates to a communication device comprising switching means in a packet switched networks, preferably in professional video production and broadcast environments. The present invention more particularly concerns a communication device in a packet-switched communication network, comprising means for: receiving streams provided by various sources; transmitting one or several streams selected from the set of incoming ones; comprising means for switching from a given set of incoming streams to a different set of outgoing streams, said switching being based on time based information and information concerning the structure of the manipulated streams. The present invention also concerns a method of switching in a packet-switched communication network comprising a plurality of sources of data, a communication device and at least one destination device.

Abstract: The invention relates to cryptographic equipment which comprises an input interface, a red module, a cryptographic module, a black module, and an output interface. The cryptographic module includes a cryptographic unit, which interacts with the red module and with the black module, and a management device, which interacts with the input interface and with either the red module or the black module, but not with both simultaneously. The cryptographic unit and the management device are physically and logically separate from one another and independent, and have identical protection means capable of protecting the integrity of the management device so as to detect any attempt at tampering.

Abstract: The inventions concerns a network data storage system comprising a storage unit, at least one network client and an intermediate network switch. The storage unit contains at least two data storage servers each comprises a local storage component containing digital file segments of at least one digital file and is adapted to execute a local digital file management method organizing the physical location of the digital file segments. Each data storage server is adapted to communicate with the other data storage servers and to execute a distributed digital file management method. The distributed digital file management method maintains a record of operations and communicates internally with the other data storage servers to obtain information concerning the digital file segments contained on the other data storage servers and an overview of all information concerning all digital files stored on the storage unit.

Abstract: The present invention relates to the domain of video equipment. More specifically, it concerns a reception device that comprises the means for: receiving packets containing samples, that come from data sampled every Tech period, where Tech is from a time base synchronized on all the stations of said network, regenerating a counting ramp having a count increment and a range value PCR_Modulus, using a phase-locked loop PLL1 that receives the samples and that delivers local samples every Tech period and a reconstituted clock, initializing, at every zero-crossing of the counting ramp, an image counter that is determined by the reconstituted clock. According to the invention, it comprises, further, means for determining the values of count increments.

Abstract: An apparatus for transmitting and receiving packets in a packet switching network that includes at least two stations. The apparatus includes a phase-locked loop, as well as means for receiving packets containing samples of the network, the samples being derived from data sampled every Tech period, where Tech is derived from a time base synchronized on all the stations of the network and the samples being associated with incremental values predicting at least one sample, calculating, in case of interruption of packet reception, a prediction of a sample that should have been received, by adding an increment value to a received sample value.

Abstract: A device to secure a JTAG type bus in its “scan chain” component chaining mode functionality, when several components are connected in series on the JTAG bus, includes a first interface for receiving JTAG signals and a second interface for the JTAG signals originating from a chain of components. The device includes the following modules: a JTAG frame generator module for verifying the continuity of operation of said Bus and components; a module for monitoring the electrical activity of said Bus and components; an alarm module for sending back an alarm detected by the above modules; an alarm module for managing the operating mode of the device; and a security functions activation module AFS.

Abstract: The present invention relates to a communication device comprising switching means in a packet switched networks, preferably in professional video production and broadcast environments. The present invention more particularly concerns a communication device in a packet-switched communication network, comprising means for: receiving streams provided by various sources; transmitting one or several streams selected from the set of incoming ones; comprising means for switching from a given set of incoming streams to a different set of outgoing streams, said switching being based on time based information and information concerning the structure of the manipulated streams. The present invention also concerns a method of switching in a packet-switched communication network comprising a plurality of sources of data, a communication device and at least one destination device.

Abstract: A method is intended for scheduling reservations of resources in a packet-switched communication network comprising end-nodes and core network switches. This method comprises the steps of: including a time information to each request, issued by an end-node and forwarded by at least one core network switch, and requesting a resource reservation for receiving a stream defined by specifications at a time which is represented by this time information, and storing the time information, which is included into each forwarded end-node request in correspondence with the associated stream specifications, into at least one related database managed by a core network switch which participates to the request forwarding.

Abstract: A method intended to aid in the reservation of resources within a packet-switched communication network comprising a number N of relaying nodes. This method consists i), in determining for some at least of the N nodes at least one resource reservation plan Pik defined by a plan identifier associated with a stream identifier and at least two ports, and ii) in memorizing for each of the N nodes the various plans Pik relating to them.