Abstract: One embodiment relates to a method for communicating multimedia data between two devices over a network. The method comprises the devices repeatedly generating and exchanging the multimedia data and quality data representative of the quality of the communication between the two devices. At least the first device applies at least one current error correction strategy selected from a group of error correction strategies in order to increase the quality of the communication between the devices. The method also comprises an evaluation of an effectiveness of each current error correction strategy on the quality of the communication between the two devices is carried out as a function of newly received quality data.

Abstract: One embodiment relates to a method for communicating multimedia data between two devices over a network. The method comprises the devices repeatedly generating and exchanging the multimedia data and quality data representative of the quality of the communication between the two devices. At least the first device applies at least one current error correction strategy selected from a group of error correction strategies in order to increase the quality of the communication between the devices. The method also comprises an evaluation of an effectiveness of each current error correction strategy on the quality of the communication between the two devices is carried out as a function of newly received quality data.

Abstract: An antenna apparatus for determining the position of a radio-frequency transponder is provided, comprising a phased array of antennas enabled to transmit and receive power at a given frequency for communicating with a radio frequency (RF) transponder, the phased array being movable; and a phase shifter for providing a phase shift to at least one antenna of the phased array to provide a minima in a main radiated lobe of the phased array, such that when the phased array is moved from a first position, for detecting the RF transponder via the main radiated lobe, to a second position, where a signal from the RF transponder is minimized, a position of the RF transponder determined to be along an axis of the minima in the second position.

Abstract: An RFID system for determining the location of a vehicle or mobile object that passes thereover is presented. The system comprises a tag arrangement having at least one tag where the arrangement having a width of between approximately 0.5 m and 2 m.

Abstract: An antenna apparatus for determining the position of a radio-frequency transponder is provided, comprising a phased array of antennas enabled to transmit and receive power at a given frequency for communicating with a radio frequency (RF) transponder, the phased array being movable; and a phase shifter for providing a phase shift to at least one antenna of the phased array to provide a minima in a main radiated lobe of the phased array, such that when the phased array is moved from a first position, for detecting the RF transponder via the main radiated lobe, to a second position, where a signal from the RF transponder is minimized, a position of the RF transponder determined to be along an axis of the minima in the second position.

Abstract: An RFID based monitoring system and method is provided. A tag module is allocated to an item to be traced, which is operable by an RFID reader. In the system, the tag module is accessed through conductive coupling with an entry point that is operable in an RF field of the RFID reader.

Abstract: The invention relates to a method of creating at least one complex multimedia object intended to be reproduced in a multimedia environment. According to the invention such a method includes a step (21) of dynamically encapsulating at least one second multimedia object (12) in a first multimedia object (11) to form a complex multimedia object (110) having behavioral characteristics in said multimedia environment defined in a list (150) of behavioral characteristics associated with it obtained by transferring into a list (13) of behavioral characteristics associated with said first multimedia object (11) a set of characteristics contained in a list (14) of behavioral characteristics associated with said second multimedia object (12).

Abstract: An RFID system for determining the location of a vehicle or mobile object that passes thereover is presented. The system comprises a tag arrangement having at least one tag where the arrangement having a width of between approximately 0.5 m and 2 m.

Abstract: An RFID system for determining the location of a vehicle or mobile object that passes thereover is presented. The system comprises a tag arrangement having at least one tag where the arrangement having a width of between approximately 0.5 m and 2 m.

Abstract: An RFID based monitoring system and method is provided. A tag module is allocated to an item to be traced, which is operable by an RFID reader.

Abstract: An RFID system for determining the location of a vehicle or mobile object that passes thereover is presented. The system comprises a tag arrangement having at least one tag where the arrangement having a width of between approximately 0.5 m and 2 m.

Abstract: A method of measuring an angle in three dimensions relative to a reference direction. In the method:a transducer array emitter is placed in a known position relative to the reference direction;the transducers of the array are excited so as to emit ultrasound waves in air mainly in a firing direction;by applying phase offsets between the excitation signals for the transducers of the array, the firing direction is varied, thereby causing it to scan a given observation zone, while simultaneously the echo received in the vicinity of the emitter is measured; andthe looked-for angle is determined from the known position of the emitter relative to the reference position, and from the firing direction at the moment when the echo amplitude is at a maximum.

Abstract: The invention is related to a method for controlling a device for the ultrasound detection of objects in air, said device comprising a plurality of transducers, used as transmitters and adapted to operate in a phased grid, and at least one transducer, used as a receiver, which are mounted on a support, wherein, prior to at least one detection operation, a calibration step is carried out in order to ascertain a structural phase shift of the transmitter with respect to the reference transmitter, which is then memorized so as to later be able to correct the theoretical phase shifts of the transmitters from the structural phase shift value when shots are ordered later.

Abstract: The invention relates to a voltage generator including a fuel cell, a d.c. converter and a storage battery, the input terminals of the d.c. converter being connected to the fuel cell terminals and the output terminals of the d.c. converter being connected on the voltage generator terminals in parallel with those of the battery. A microprocessor regulates the maximum intensity value of the current going through the d.c. converter responsive to the voltage measured at the terminals of the fuel cell in order to maintain the voltage near a preset reference value.

Abstract: A ultrasonic sensor for detecting the location of objects disposed in a substantially gaseous environment includes a plurality of nodes arranged into a uniform network. A plurality of circular transducers are provided such that each transducer is disposed at a node. The center of adjacent transducers are spaced at a distance no greater than the wavelength of acoustic waves emitted by the transducers. A method of detecting the location of objects disposed in a substantially gaseous environment is also disclosed.