TERMIUM Plus^®

Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 DEF

A technology that uses light propagating in free space to transmit data between two points.  7, fiche 1, Anglais, - free%2Dspace%20optics

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Free-Space Optics (also known as FSO, Wireless Optics or Optical Wireless) is an optical data, voice and video transmission system. Like fiber optic cable, wireless optics communication systems use laser light to transmit a digital signal between two transceivers. However, unlike fiber, the laser like is transtmited through the air (free-space) instead of through a glass strand. In order for the digital signal to be transmitted and received, there must be clear line of site between each wireless optics unit. In other words, there should be no obstructions such as trees or buildings between the transceiver units.  1, fiche 1, Anglais, - free%2Dspace%20optics

Record number: 1, Textual support number: 2 CONT

The technology is useful where the physical connection of the transmit and receive locations is difficult, for example in cities where the laying of fibre optic cables is expensive. Free Space Optics is also used to communicate between space-craft, since outside of the atmosphere there is little to distort the signal. The optical links usually use infrared laser light, although low-data-rate communication over short distances is possible using LEDs [Light Emitting Diode]. IrDA [Infrared Data Association] is a very simple form of free-space optical communications. Distances up to the order of 10 km are possible, but the distance and data rate of connection is highly dependent on atmospheric conditions.  7, fiche 1, Anglais, - free%2Dspace%20optics

Record number: 1, Textual support number: 1 OBS

In Information Technology and Communications, IrDA refers to Infrared Data Association, a standard for communication between devices (such as computers, PDAs and mobile phones) over short distances using infrared signals.  8, fiche 1, Anglais, - free%2Dspace%20optics

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 CONT

L'optique sans fil et la radio sont deux technologies foncièrement différentes qui ont longtemps été considérées comme concurrentes. [...] Avec l'optique sans fil, on obtient de très hauts débits garantis jusqu'à 10 Gb [gigabits] se propageant sur de courtes ou de moyennes distances(entre 100 m et 2 km), en «full duplex».  1, fiche 1, Français, - optique%20sans%20fil

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

Record number: 2, Textual support number: 1 CONT

Phillips has released an AFDX (Avionics Full Duplex Switched Ethernet) PCI Mezzanine (PMC) card for avionics simulation and test. AFDX is an advanced protocol standard to interconnect avionics subsystems. Its first major use will be in the Airbus A3XX. The PMC694/AFDX module is among the first products on the market, supporting this new avionics bus. It is designed for applications like end system simulation, test systems and prototyping of avionics components. The greatest benefit from this implementation can be gained when used in the Phillips ADS-3000 V2 environment. The standard is based on widely approved and adopted standards like ethernet (IEEE 802.3) and IP/UDP (Internet Protocols). Modifications to these standards have been made to cope with the need for deterministic response times and limited jitter.  4, fiche 2, Anglais, - Avionics%20Full%20Duplex%20Switched%20Ethernet

Fiche 2,  Justifications,  Français

Record number: 2, Textual support number: 1 CONT

L'Américain [Rockwell Collins] annonce avoir été sélectionné par Airbus pour fournir le bus Ethernet redondant à haut débit AFDX(avionics full duplex Ethernet) qui constituera la seule source reliant les différents ensembles d’avionique modulaire du gros-porteur A380.  1, fiche 2, Français, - bus%20Ethernet%20redondant%20%C3%A0%20haut%20d%C3%A9bit

Fiche 2,  Justifications,  Espagnol

Fiche 3,  Justifications,  Anglais

Record number: 3, Textual support number: 1 CONT

two-way simultaneous communication: communication in which information is transferred in both directions at the same time.  3, fiche 3, Anglais, - two%2Dway%20simultaneous

Fiche 3,  Justifications,  Français

Record number: 3, Textual support number: 1 OBS

Si les données peuvent être véhiculées en même temps dans les 2 sens(utilisant 2 voies de transmission distinctes ou des caractéristiques de modulation différenciables), la liaison est dite Full duplex.  2, fiche 3, Français, - bidirectionnel%20simultan%C3%A9

Fiche 3,  Justifications,  Espagnol