Computer input device for use in conjunction with a mouse...

G - Physics – 06 – F

Patent

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Details

G06F 3/033 (2006.01) H03K 17/94 (2006.01)

Patent

CA 2240345

A computer input device (20) is used in conjunction with a mouse input device. The computer input device (20) of the invention comprises a body (22) having a resilient layer (24) covered by a surface layer (26) textured throughout the entirety of the surface for operation of the mouse. A printed circuit card (50) is incorporated in the body between the resilient layer and the upper surface layer and includes a plurality of capacitive touch sensor pads (58, 60, 62, 64, 66, 68, 70 and 72). The card further includes electronic circuitry for operating the touch sensor pads to detect when a capacitive object, such as a fingertip, is in the proximity of a sensor pad. A touch need not apply force to register. The printed circuit card includes a guard ring pad (74) surrounding the touch pads, which detects the presence of the mouse over the sensor pads and indicates that any detected outputs from the sensor pads are not valid, but instead are due to the presence of the mouse. The mouse can operate over the entirety of the surface of the device without interruption, including over the capacitive sensor pads.

Unité périphérique d'entrée d'ordinateur(20) utilisé en conjonction avec une unité d'entrée périphérique à souris. Cette unité d'entrée pour ordinateur se compose un élément (22) comportant une couche résiliante(24) recouverte d'un couche de surface(26) structurée sur toute son étendue de manière adaptée à l'utilisation d'une souris. Une carte de circuit imprimé(50) est incorporée dans l'élément entre la couche résiliante et la couche de surface, et comporte une pluralité de touches capacitives tactiles (58, 60, 62, 64, 66, 68, 70 et 72). Cette carte comporte en outre des circuits permettant aux touches tactiles de détecter un objet capacitif comme le bout d'un doigt, se trouvant à proximité d'une touche. Il n'est pas nécessaire d'appliquer de la force pour actionner les touches. La carte de circuit imprimé comporte un plaquette anneau de garde (74) entourant les touches tactiles(74), qui détecte la présence de la souris sur les touches et indique que les sorties provenant d'une touche tactile ne sont pas valables mais dues à la présence de la souris. La souris peut opérer sur toute la surface de l'unité sans interruption, y compris sur les touches capacitives tactiles.

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