System for transferring data and use thereof

G - Physics – 03 – F

Patent

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Details

G03F 7/20 (2006.01) G03F 7/24 (2006.01)

Patent

CA 2744826

The invention relates to a system (21) for transferring data to disk-like data storage media (23, 23'), which system comprises a pick-up (22, 22') which is at least partially in the form of an inner cylinder and is intended to arrange the data storage media - the side of which that is intended to receive data faces the cylinder axis (29) of the pick-up - and a transfer head (30) which can be rotated about this cylinder axis and has at least two transfer means (24, 24') for transferring the data to the data storage medium (23), wherein the pick-up (22, 22') and the transfer head (30) can also be moved relative to one another in the direction of the cylinder axis (29), and the at least two transfer means (24, 24') comprise a respective array of light sources in order to transfer the data using multi-beam technology. The system (21) is characterized in that the wavelength of the array of light sources of a transfer means (24) differs from the wavelength of the array of light sources of other transfer means (24'), and a control unit (40) is provided in order to alternately switch the transfer means (24, 24') on and off for the purpose of generating light at different wavelengths.

L'invention concerne un système (21) de transfert de données sur des supports de données (23, 23') en forme de disques, lequel comprend un réceptacle (22, 22') formé au moins en partie comme un cylindre intérieur pour recevoir les supports de données - la face prévue pour l'enregistrement des données étant orientée vers l'axe de cylindre (29) du réceptacle - et une tête de transfert (30) pouvant tourner autour de cet axe de cylindre et équipée d'au moins deux moyens de transfert (24, 24') - pour transférer les données sur le support de données (23). Le réceptacle (22, 22') et la tête de transfert (30) sont également mobiles l'un par rapport à l'autre dans la direction de l'axe de cylindre (29) et les deux moyens de transfert (24, 24') comprennent respectivement un ensemble de sources lumineuses pour transférer les données selon la technique à faisceaux multiples. Le système (21) est caractérisé en ce que la longueur d'onde de l'ensemble de sources lumineuses d'un moyen de transfert (24) se différencie de la longueur d'onde de l'ensemble de sources lumineuses de l'autre moyen de transfert (24') et une unité de commande (40) est prévue pour mettre en marche et arrêter en alternance les moyens de transfert (24, 24') pour produire de la lumière de longueurs d'onde différentes.

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