Removable media ejection system

G - Physics – 11 – B

Patent

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Details

G11B 15/675 (2006.01) G06F 13/10 (2006.01) G06K 7/00 (2006.01) H02N 10/00 (2006.01)

Patent

CA 2196275

A media ejection system includes a peripheral unit having a housing (12), an ejection mechanism (14), and a memory wire (16) coupled to the ejection mechanism. The system further includes a digital processor (42) for issuing ejection commands, and a controller (50) responsive to the ejection command for controlling a current flow through the memory wire. When sufficient current flows through the memory wire, it contracts to activate the ejection mechanism, thereby ejecting a removalbe medium (such as a PMCMCIA card) from the housing of the peripheral unit. A method of the invention includes the steps of receiving an injection request, issuing an ejection command in response to the ejection request, where the ejection command includes parameters for controlling current flow through the metal alloy, and electrically energizing the memory ally in accordance with the parameters such that the memory alloy undergoes a dimensional change to activate a removable medium ejection mechanism.

L'invention concerne un système d'éjection de supports. Ce système comprend une unité périphérique comportant un boîtier (12), un mécanisme d'éjection (14) et un fil à mémoire (16) couplé au mécanisme d'éjection. Le système comprend, en outre, un processeur numérique (42) pour émettre des commandes d'éjection, et un contrôleur (50) agissant en réponse à la commande d'éjection pour commander le passage d'un courant dans le fil à mémoire. Lorsqu'un courant suffisant passe dans le fil à mémoire, il se contracte pour activer le mécanisme d'éjection, éjectant ainsi un support amovible (tel qu'une carte PMCMCIA) du boîtier de l'unité périphérique. Un procédé selon l'invention comprend les étapes consistant à recevoir une demande d'éjection, émettre une commande d'éjection en réponse à cette demande, la commande d'éjection comprenant les paramètres pour commander le passage du courant dans l'alliage à métal, et mettre électriquement sous tension l'alliage à mémoire en fonction des paramètres de telle sorte que l'alliage à mémoire subisse un changement dimensionnel pour activer un mécanisme d'éjection de support amovible.

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